JPH09253832A - Pouring device for casting - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve a pouring efficiency by pressing the rear end of a train of truck loading mold with a pressure cylinder, receiving the front end of a train with a cushion cylinder, enabling a ladle to move parallel with the train and pouring molten metal from a ladle to mold. SOLUTION: The rear end of a train 15 of a truck 12 loading a mold 14 is pressed with a pressure cylinder 18. The front of train 15 is received with a cushion cylinder 22. Control motors 16, 20 of servo motor drive a rod extending/retracting through a ball screw to drive cylinders 18, 22. The train 15 is held between the cylinders 18, 22, having good moving precision and is capable of moving the mold 14 in high speed and reduced impact. A ladle moving device 34 moves a ladle 32 parallel with the train 15. A position of pouring port of the mold 14 is calculated with a signal from the control motors 16, 20, the ladle 32 is aligned to the pouring port of each mold 14 regardless of that the mold 14 is in moving or not moving.

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD The present invention relates to a casting pouring device.

[0002]

2. Description of the Related Art Conventionally, as a casting pouring device, a casting device has been provided, which has a plurality of casting molds placed in series on a conveyer via a carriage and is intermittently conveyed, and has been conveyed to a predetermined position. Some molds are provided so that the molten metal is poured into the mold pouring port by a ladle. In this device, the operation of the transport device,
Labor saving is achieved by automating the operation of tilting the ladle and pouring the molten metal of a predetermined weight.

[0003]

However, in the casting pouring apparatus as described above, pouring is performed when the mold is stopped, and the time during which the mold is moving is a waiting time. However, there was a problem that the operating efficiency was poor. In addition, it is difficult to increase the mold transfer speed because the mold (sand mold, etc.) is a heavy object and is fragile and requires careful handling.

On the other hand, it is possible to consider moving the ladle in synchronism with the movement of each of the successively conveyed molds so that the molten metal can be poured during the movement of the molds. However, if you simply synchronize the movement of the mold and ladle (moving at a constant speed),
Efficient mold transfer time and efficient ladle pouring time do not always match, and are not versatile.
Here, the transport time includes the stop time, and means the entire required time for one mold to move one mold portion, and the pouring time includes the waiting time and one It means the total time required for pouring the mold. And the average pouring time of pouring into one mold is
Even under the condition that it can be set shorter than the average transfer time for transferring one mold, if you simply synchronize the movement of the mold and the ladle, you will be bound by the condition of the transfer time Operation efficiency cannot be improved.

Further, since the molten metal is liquid, when the ladle is moved, it is affected by the inertial force generated at that time, and the parabolic pour curve of the molten metal is delayed or advanced too much. If the movements of the mold and the ladle are simply synchronized as described above, there is a problem that the above-mentioned inertial force is affected and the pouring is not performed properly. Therefore, it is difficult to provide a suitable casting pouring device that is highly unattended by automation with high operating efficiency.

Therefore, an object of the present invention is to drive the carriage row and the ladle separately and separately while suitably adjusting the mutual positional relationship, regardless of whether the carriage row is moving or stopped. An object of the present invention is to provide a suitable casting pouring device capable of pouring molten metal into a mold whose ladle is accurately controlled with minimal waiting time and improving the operating rate.

[0007]

The present invention is provided with the following constitution to achieve the above object. That is, the present invention provides the first
A moving path and a plurality of trolleys on which the molds are loaded, a trolley row provided so that adjacent trolleys or the molds are in contact with each other, so that the trolleys can move on the first moving path with a squeeze.
A first control motor and a pusher cylinder that is provided on the rear end side of the first moving path and that includes a rod that expands and contracts by the driving of the first control motor, and that pushes the carriage row along the first moving path. A second control motor, and a rod provided on the tip end side of the first moving path and extending and contracting by the drive of the second control motor. The carriage row is sandwiched between the pusher cylinder and the carriage row, A cushion cylinder that receives the movement of the carriage, a discharging device that discharges one carriage at the tip of the carriage row together with the mold when the carriage row is moved by one carriage along the first moving path, and the carriage. After the row has been moved by one trolley along the first moving path, a feeder for feeding one trolley with the mold to the rear end of the trolley row, and a device arranged in parallel to the first moving path The second moving path and the second A ladle provided so as to be movable along a moving path and automatically tilted so that molten metal can be poured into a mold pouring port, a third control motor, and a drive of the third control motor. The signals from the ladle moving device for moving the ladle along the second moving path and the first control motor and / or the second control motor are inputted by the calculation of the position of the gate of each mold. And a drive control device for controlling the third control motor so as to move the ladle so that the molten metal is sequentially poured into each mold regardless of whether the carriage train is moving or stopped.

Further, since the first to third control motors are servomotors and the pusher cylinder and the cushion cylinder are provided with rods that expand and contract via ball screws, the carriage train can be moved accurately.

Further, the ladle moving device includes a rack arranged along the second moving path and a pinion gear meshing with the rack and rotationally driven by the third control motor. Can be moved accurately.

[0010]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments according to the present invention will be described below in detail with reference to the accompanying drawings. 1 is a plan view showing a main part of an embodiment of a casting pouring device according to the present invention, and FIG. 2 is a block diagram showing a casting line to which the casting pouring device of the embodiment of FIG. 1 is applied. is there. 10 is a first moving path. 12 is a dolly. A mold 14 is loaded on each carriage 12. The plurality of carriages 12 are adjacent carriages 12, 12 ...
.. are brought into contact with each other so that they can be moved on the first moving path 10 with a white space, and a carriage line 15 is provided.

Reference numeral 16 is a first control motor. As the first control motor 16, a servo motor capable of numerical control is adopted in this embodiment. A pusher cylinder 18 is provided on the rear end side 10a of the first moving path 10,
The rod 18 that expands and contracts by the drive of the first control motor 16
a, and is arranged so that the carriage train 15 can be pressed along the first moving path 10. This pusher cylinder 1
Reference numeral 8 denotes a rod 18a which can be driven by a first control motor 16 which is a servo motor, and which rotates a ball screw (not shown) in which the power of the first control motor 16 is transmitted by a timing belt (not shown). It is provided in a mechanism that expands and contracts.

Reference numeral 20 is a second control motor. In this embodiment, as the second control motor 20, a servo motor is used as an electric motor capable of numerical control. The servo motor has a built-in encoder for controlling rotation. This encoder detects the rotation status of the second control motor 20, but is also used as a speed detector for detecting the movement status of the carriage 12. Of course, an encoder built in the first control motor 16 can be used as a speed detector for detecting the movement state of the carriage 12. Reference numeral 22 denotes a cushion cylinder, which is provided on the tip side 10b of the first moving path 10 and which is expanded and contracted by the drive of the second control motor 20.
And a carriage line 1 between the pusher cylinder 18 and
It is arranged so as to sandwich 5 and receive the movement of the carriage train 15. The cushion cylinder 22 can be driven by a second control motor 20 which is a servo motor, and the rod is rotatably driven by a ball screw (not shown) in which power of the second control motor 20 is transmitted by a timing belt (not shown). It is provided in a mechanism for extending and contracting 22a.

Reference numeral 24 is an ejector, and the carriage line 15 is the first.
It is provided so that one carriage 12b at the tip of the carriage row 15 is discharged together with the mold 14 when the carriage is moved by one carriage along the moving path 10. As a specific configuration example of the discharging device 24, a discharging movement path 24a, a pressing cylinder device (not shown) for pressing the carriage 12b located at the tip of the carriage train 15 toward the cooling line, and the pressing cylinder device The trolley 12c located beside the first moving path 10 is box-fed on the discharging moving path 24a (by combining an elevating device and a horizontal moving device) to cool the cooling line 2.
A box transfer device (not shown) for moving the end positions 12d of 5a and 25b to the cooling lines 25a and 25b.
Pressing cylinder device 26 that sequentially feeds carts 12d, ...
a and 26b are provided.

Further, as shown in FIG. 2, reference numeral 28 denotes a supply device, which moves one carriage 12 along the first moving path 10 for one carriage 12 and then moves one carriage to the rear end of the carriage row 15. It is provided to supply the dolly 12 with the mold 14. It is needless to say that the supply device 24 can also have the same configuration as the configuration example of the discharge device 24.

Reference numeral 30 is a second moving path, and the first moving path 10
Are arranged in parallel with. The second moving path 30 is composed of two rails 31, 31 arranged in parallel. Reference numeral 32 denotes a ladle, which is movably arranged along the second moving path 30 and is provided to be capable of pouring the molten metal into the pouring port of the mold 14 by automatically tilting through the tilting drive device. There is. As the tilt drive device, for example, a ladle 32
What manages the pouring amount of the molten metal by detecting the weight of is used. A ladle moving device 34 is provided so that the ladle 32 can be moved along the second moving path 30 by driving a third control motor (not shown) mounted on the ladle moving device 34. Has been. Ladle moving device 34 of this embodiment
The motion mechanism includes a rack 35 arranged along the second moving path 30 and engages with the rack 35 to form a third rack.
A pinion gear (not shown) rotationally driven by the control motor is provided on the side of the moving body that supports the ladle 32. The tilting drive device is mounted on a moving body that supports the ladle 32.

A drive controller 36 receives signals from the first control motor 16 and / or the second control motor 20 to calculate the position of the sprue of each mold 14, and the carriage train 12 is moving and Regardless of the stop, the third control motor is controlled to move the ladle 32 so that the molten metal is sequentially poured into each mold 14. The drive control device 36 is, of course, a computer that controls other components of the casting line, and controls, for example, the cooling line, the tilt drive device, and the molding line. It should be noted that the line that has arrows at both ends and that connects the drive control device 36 and each component is a signal line for exchanging signals in order to control each component.

Reference numeral 38 denotes a melting furnace device section for producing molten metal to be supplied to the ladle 32. An electric furnace, a high-frequency furnace, a cupola furnace, and a molten metal transport path for moving the ladle 32 are provided. Reference numeral 39a denotes a moving body, which conveys the ladle 32 for attachment to and detachment from the ladle moving device 34. Reference numeral 39b is a molten metal transfer point at which the ladle 32 is exchanged between the moving body 39a and the ladle moving device 34. 40
Is a sand processing unit, which processes the sand forming the mold 14.
Reference numeral 41 denotes an upper mold shaping machine line, which molds the upper mold and conveys the upper mold in the arrow direction. Reference numeral 42 denotes a lower mold shaping machine line that molds the lower mold and conveys the lower mold in the arrow direction. Reference numeral 44 denotes a frame alignment device, which forms the mold 14 by combining the upper mold and the lower mold formed by the upper mold making machine line 41 and the lower mold making machine line 42.

Next, the operating state of this embodiment will be described with reference to the drawings. FIG. 3 shows movement A of the mold 14 of this embodiment,
It is a time chart which shows the situation of movement B of the ladle 32 and tilt C of the ladle 32, and four typical pattern examples (I
~ IV) listed. The time is plotted along the horizontal axis, and the movement A of the mold 14 is used as a reference in the uppermost stage. Regarding the movement A of the mold 14, movement B of the ladle 32 and tilt C of the ladle 32 are shown.
Examples of patterns are shown in (I) to (IV). A1 indicates when the mold 14 is moving in the transport direction (see the arrow in FIG. 2) on the pouring line (first moving path 10), and A0
Indicates that the mold 14 is stopped. B0 indicates the time when the ladle 32 is stopped, and B1 indicates the time when the ladle 32 is moving together with the mold 14 in the conveying direction of the mold 14. Further, B2 indicates the time when the ladle is moving in the direction opposite to the conveying direction of the mold 14. C1 shows a state in which the ladle is tilted, and C0 shows a state in which the ladle 32 is returned without tilting.

In the first pattern (I), when the ladle 32 is stopped and the mold 14 is stopped at a predetermined position,
The operation of tilting the ladle 32 and pouring the molten metal is repeated.

In the second pattern (II), the ladle 32 moves along with the movement of the mold 14, and the ladle 32 moves during the movement.
Repeats the operation of pouring molten metal into the mold 14 and continuously pouring it even when the movement of the mold 14 is stopped. When the moving time of the mold 14 is long in relation to the stop time and the pouring time is long, pouring can be performed while the mold 14 is moving,
Because you can pour the water without being caught by the length of downtime,
The operation rate of pouring work can be improved.

The third pattern (III) is a pattern that is performed when the pouring time is relatively short in relation to the feed time per mold 14, and the pouring work can be performed very efficiently. You can Regardless of whether the mold 14 is moved or stopped, the ladle 32 can be sequentially poured into the mold 14. Therefore, when the pouring time is short, the ladle 32 moves in the direction opposite to the conveying direction of the mold when pouring into one mold 14 is finished and is synchronized with the next mold 14 to be stopped or moved. Can be poured. For this reason, the total time required for pouring is shorter than the total time required for the mold 14 to be fed, and the ladle 32 can be driven in the upstream direction of the carriage train 15 (the direction opposite to the transport direction). If the ladle 32 is replaced using the time generated by this, the setup time can be shortened and the operation efficiency of the pouring work can be greatly improved.

The fourth pattern (IV) is a pattern which is carried out when the pouring time is relatively long in relation to the feed time of each mold 14, and the feed time of the mold 14 is specially extended. Without it, pouring work can be performed. Therefore, as long as it is not necessary to extend the feeding time of the mold 14,
The operation efficiency of pouring work can be improved. According to this pattern, the ladle 32 gradually moves in the conveying direction with the movement of the mold 14, that is, it is delayed, so that finally the feeding of the mold 14 is stopped, and the ladle 32 moves from the downstream side to the upstream side. The mold is to be intermittently moved in the direction (opposite to the feeding direction of the mold 14) and sequentially poured into each mold 14, but the work can be efficiently performed until such a state is reached.

As described above, by suitably combining the mold conveying device and the ladle moving device, automation can be favorably achieved and the operation efficiency of the pouring work can be improved. In particular, the mold conveying device of the present invention uses the pusher cylinder 18 and the cushion cylinder 22 to
Since the movement error can be reduced by sandwiching the carriage row 15, the movement accuracy can be improved and the mold 14 can be moved at high speed and with less impact. Further, it can be easily and suitably applied to various pouring conditions. Therefore, it is also effective for realizing a suitable unmanned line.

Further, since the molten metal is a liquid, it is affected by the inertial force generated when the ladle is moved, and the parabolic pouring curve of the molten metal is delayed or advanced too much. According to the invention, by the speed detector provided on the cushion cylinder and / or the pusher cylinder,
Regarding the expected pouring curve of the molten metal, the ladle is moved slightly ahead when the mold starts moving, or it moves along with the mold when stopping the mold and pouring is done. It is possible to easily and accurately perform an operation such that the ladle is slightly advanced and stopped. As described above, the present invention has been described variously with reference to preferred embodiments. However, the present invention is not limited to the embodiments, and it is needless to say that many modifications can be made without departing from the spirit of the invention. That is.

[0025]

According to the present invention, the carriage row is sandwiched between the pusher cylinder and the cushion cylinder driven by the control motor, the mold is moved through the carriage, and the position of the mold is changed by the signal from the control motor. It can accurately detect and control the ladle moving device to move the ladle. Therefore, the movement of the carriage row and the movement of the ladle can be driven separately and while appropriately adjusting the mutual positional relationship, and the ladle can always accurately calculate the molten metal regardless of whether the carriage row is moving or stopped. It has a remarkable effect that the operation rate can be improved by pouring the molten metal into the mold whose position is controlled with minimal waiting time.

[Brief description of drawings]

FIG. 1 is a plan view showing an embodiment of a casting pouring device according to the present invention.

FIG. 2 is a block diagram illustrating a casting line to which the casting pouring device of the embodiment of FIG. 1 is applied.

FIG. 3 is a time chart explaining an example of the operation state of the mold and ladle of the present invention.

[Explanation of symbols]

 10 1st movement path 12 trolley 14 Mold 15 trolley row 16 1st control motor 18 Pusher cylinder 20 2nd control motor 22 Cushion cylinder 24 Discharge device 28 Supply device 30 2nd movement path 32 Ladle moving device 36 Drive control apparatus

Claims (3)

[Claims] 1. The first moving path and a plurality of trolleys on which the molds are loaded are brought into contact with each other by adjoining trolleys or the molds, thereby pushing the first
The carriage row provided so as to be movable on the moving path, the first control motor, and the rod provided on the rear end side of the first moving path and extending and contracting by the drive of the first control motor, A pusher cylinder that pushes along the first moving path; a second control motor; and a rod that is provided on the tip end side of the first moving path and that expands and contracts by the drive of the second control motor. And a cushion cylinder that sandwiches the carriage row between them and that receives the movement of the carriage row, and one end of the carriage row when the carriage row is moved by one carriage along the first moving path. An ejecting device for ejecting one carriage together with the mold, and a supply device for supplying one carriage together with the mold to the rear end of the carriage row after the carriage row has been moved by one carriage along the first moving path. , The first A second moving path arranged in parallel with the moving path, and a second moving path arranged so as to be movable along the second moving path and automatically tilted so that the molten metal can be poured into a pouring port of a mold. A ladle, a third control motor, and driving the third control motor to move the ladle to the second control motor.
And a signal from the first control motor and / or the second control motor are input to calculate the position of the gate of each mold, and the carriage train is moving. A casting pouring device comprising: a drive control device that controls a third control motor to move the ladle so that the molten metal is sequentially poured into each mold regardless of the stop. 2. The casting pouring machine according to claim 1, wherein the first to third control motors are servomotors, and the pusher cylinder and the cushion cylinder are provided with rods that expand and contract via ball screws. . 3. The ladle moving device includes a rack arranged along the second moving path, and a pinion gear meshed with the rack and rotationally driven by the third control motor. The casting pouring device according to claim 1 or 2.