• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    Method and apparatus for automatically controlling the pouring of molten metal into a series of closed casting molds is disclosed. Molten metal flows in a stream from a lip-pour or bottom-pour casting ladle into a pouring gate at the top of a mold and partially fills the gate. Visible light or infrared radiation is emitted from the metal surface in the gate and is detected by a sensing device. The sensing device generates a signal which is a function of the radiation received, and therefore the apparent area of the surface of metal in the gate. The signal operates a ladle control mechanism to control the flow rate of the stream to keep the gate level substantially constant during pouring.
    公开号:SU1097186A3
    申请号:SU772455465
    申请日:1977-02-25
    公开日:1984-06-07
    发明作者:Андре Лаванший Жерар；Россье Марк-Генри
    申请人:Машиненфабрик Унд Айзенгиссерай Эд.Мецгер Аг (Фирма)；
    IPC主号:
    专利说明:

    eleven
    The invention relates to foundry.
    A device is known in which each form contains a funnel with an extension in the form of a drain at the inlet. This drain is filled to the brim when the form is complete and the presence of a liquid metal in the drain is established by an electro-optical sensor sensitive to the radiation of the metal. The sensor sends a signal that is converted into a Cl 3 stop casting command. However, the operation to fill the mold depends on indeterminate and unforeseen causes of different properties. In devices with rutting control, this process is controlled by the caster. On the one hand, it may be necessary to quickly stop pouring metal in case of malfunctions to prevent metal damage or accidents, on the other hand, it is also necessary to control the consumption of metal strings so that the form fills evenly and that There were no shrink holes, pores, or other internal defects.
    The closest in technical essence to the invention is a device comprising a pouring ladle mounted on a cross-beam, a motor turning drive connected to a cross-head cable, an optical sensor aimed at the molten metal, which constantly controls the filling of molds with a probe inserted into foundry funnel. The flow rate of the molten metal is controlled so that the level of the liquid metal in the funnel remains constant until full filling 2. However, experience has shown that installing a mechanical probe and its technical content cause difficulties in some cases. .
    The aim of the invention is to increase productivity.
    This goal is achieved by the fact that a device for automatically adjusting the filling of a mold, containing a casting bucket mounted on a cross-arm, a motor turning turn actuator connected to the cross-arm cable, an optical sensor directed to the molten metal, further comprises a second optical sensor directed 62
    a molten metal additionally contains a second optical sensor directed to the molten metal in the ladle, a third optical sensor directed to the metal stream flowing from the ladle, a fourth optical sensor directed to the form funnel, a bucket position sensor, converters by number sensors, level adjuster, comparison unit, level regulator, amplifier and interrupter, each sensor connected to a converter, the first output of a converter connected to the fourth optical sensor connected to one input of the comparator unit, the level adjuster is connected to another input of the comparator unit, the output of the converter connected to the third optical sensor, and the output of the comparator unit connected to two inputs of the level regulator, the output of the level regulator connected to the amplifier input, the output of which is connected to the input of the chopper, to which the outputs of the transducers connected to the second optical sensor and to the position sensor are connected, the output of the chopper is connected to the drive unit, the output of the transducer is connected from the first optical sensor connected to a converter connected to the fourth optical sensor, the second output of this converter connected to a converter connected to the third optical sensor.
    FIG. 1 shows schematically a filling device equipped with a regulating device, a general view; in fig. 2 and .3. - .. schematic views of two versions of the funnel of the mold in the section; in fig. 4 - block diagram of the regulating device.
    The main elements of the casting device are (Fig. 1) casting bucket 1, equipped with a drain 2 and mounted on a movable device 3, which can rotate around axis 4. The position of the bucket 1 is determined by the motor 5, which drives the gate 6, on which is wound the cable 7, on which the movable device 3 is suspended. The angle sensor 8 is also controlled by the motor 5 and provides the circuit 9 with information about the position of the pouring ladle.
    When bucket 1 is filled with liquid metal, it is fed to a certain 31 position above the path along which the molds move. The latter are moved on rails or located on a carousel and are fed to the casting position sequentially one after the other. Form 10 has a hole 11 of the funnel (Fig. 1). In order to ensure the progress of the casting operation, the installation contains a control unit consisting of a regulating circuit 9 and an angle sensor 8, as well as a number of optical sensors A, B, C and G. These optical sensors are located in certain places around the mold 10 and the casting bucket 1 at a distance from the monitored positions which is approximately 0.5-2.0 m. Each sensor monitors the specific installation position. Sensor A is oriented towards the free surface of the liquid metal contained in the pouring ladle near the drain. It serves as a control and corrective element, which is triggered, in particular, depending on the temperature of the metal. Sensor B is oriented at the discharge tip 2, it is designed to monitor the presence of liquid metal in this place in order to automatically activate the regulating and tracking device at the beginning of casting. Sensor B is focused on a jet of liquid metal, which flows from the bucket 1 to the funnel 11. Its role is to measure the width of the jet and, consequently, its flow. As for the sensor D, its role is to give information about the height, watching the free surface of the metal in the funnel 11. Sensors C and D play the main role during the casting operation. In order for this operation to proceed normally, it is necessary to keep the surface of the liquid metal in the funnel 11 at a level approximately constant. In order to achieve this, sensor G can be located as, as shown in FIG. 2 and 3. In FIG. Figure 2 shows a mold with a funnel for casting with a cylindrical inlet and a sensor oriented obliquely toward this funnel. When the free level of the molten metal is relatively low (Fig. 2), the radiation in the direction of sensor G appears only from part of surface a, since the remaining surface 64 is covered by the upper edge of funnel 11. If the level of liquid metal reaches height b, then radiation in the direction of sensor Г comes from the entire surface, so the collected light and / or infrared beam will be much wider. Thus, the sensor can send an electrical signal that corresponds to the size of the part of the surface that is visible and, therefore, to the level of the free surface of the metal. FIG. 3 shows how sensor G can be located in the case of a funnel 11, the entrance of which has a conical shape. When the free surface of a metal reaches a level a, the size of this surface is a, if the free surface reaches a level b, then its size is equal to the value of b. Whatever the level, the entire free surface is in the field of view of sensor G. The direction of observation in this case may be vertical. Sensor B can measure the flow rate of the casting jets (Figures 2 and 3) .. Circle C, shown with a dotted line, schematically depicts the field of view of the sensor B. This field of view covers a certain length of the jet and the collected radiation will depend on the width of the jet, and therefore, from its expense. In fact, in order to direct sensor B to the cylindrical part of the pouring jet, the sensor's field of observation is limited to a rectangular mass. The sensors described provide an analog type signal. In the case of a photosensitive resistance, the current passing through the cable conductors represents the measurement of the length of the metal surface in the sensor's field of view. But sensors can also be provided with an optical system with high magnification and with an on-screen array of elements providing digital measurement of the radiating surface or determination of the position of the free surface of the molten metal at the funnel wall by logical analysis schemes of the combination type or type after ovatelnoy scan image. The same effect can be obtained by placing a group of individual sensors, each of which determines a specific level or a specific jet width. Both recent decisions provide only a relatively rough estimate of the parameters to be determined. The main part of the regulatory scheme 1 9 has two feedback loops, sequentially placed in one another (Fig. 4). The first loop consists of the yka sensor of the control circuit 12, the level and the shutter of the 13 level, whereas the second loop contains the sensor B and the flow control circuit 14. This circuit is affected by the correction signal that circuit 12 sends, and its signal is amplified in amplifier 15, which leads to. the action of the engine 5, which regulates the position of the bucket 1. Before entering the regulating circuits 12 and 14, the signals sent by sensors C and D are corrected in the compensating circuits 16 and 17 by means of information from the control circuit 18, which is influenced by sensor A. The signals, transmitted to circuits 12 and 14 are thus subjected to a corresponding correction depending on the temperature of the liquid metal. Sensor A, the entire field of view of which is permanently occupied by part of the free surface of the liquid metal, sends a signal whose intensity depends on temperature, and information can be stored. a storage device, if necessary, taking into account the shape of the filling opening and the violations to which it may be subjected. Sensor B provides the control circuit 9 with the position of the bucket 1 when casting begins. In fact, when the mold 10 is fed under the bucket 1 or vice versa, the contact is made automatically, as a result of which the engine 5 is turned on giving the bucket tipping command 1. This command is interrupted at the moment when sensor B detects the presence of liquid metal at the end of the drain nozzle so that from now on engine 5 is included in the control circuit, which reacts directly to orders from circuit 14. Sensor 8 sends gate position information 6 i.e. bucket 1. This G information is compared with that stored in the storage device corresponding to the end of the previous casting. Taking into account the signal strewn with sensor B, random anomalies can be detected, such as dangerous slag buildup covering the spout, in which case the casting operation should be stopped without delay by withdrawing the casting bucket to the idle position and activating the alarm. The described example of the regulating circuit has a design that ensures efficiency and maximum stability. The first feedback loop responds to the size of the part of the free surface of the liquid metal, as detected by sensor G in the funnel of the mold. The signal that this sensor sends is a function of the size of this surface and, therefore, its level. It is compared with a control signal that determines the control level of this surface and the result of this comparison is the control signal for the flow rate that is transmitted to the second feedback loop. The control circuit 14 compares the flow rate control signal with the signal from sensor B or with the actual flow rate of the pouring jet. As a result of the comparison between the Actual flow rate and the control flow rate value, a command is sent, sent by the amplifier 15, which drives the motor 5. Thus, a device is obtained which reacts very quickly and ensures the stability of the regulation. . In addition, when the level in the funnel sharply exceeds a certain value of the control level, due to the complete filling of the form, sensor G signal can also be used to quickly divert the bucket to its inoperative position. Depending on the specific application, other control circuits can be used. So, for example, it is sufficient to determine the intensity of the casting jet and to provide control of the engine, which regulates the position of the bucket depending on this information only, while in other cases where maintaining a constant level in the pot is a basic requirement, but where uneven casting does not pose a danger, it suffices to use only one sensor G, and sensor B may not be used at all. On the other hand, the regulating circuit can be used not only for the instantaneous value of the signals strewn by the sensors, but also the value of their variation dp and their sum stored in the memory device for controlling the FID type (proportional integral differential). This principle of operation is facilitated by the use of sensors with the size of the output of the analog triplex. The proposed device can also be made when a pouring ladle with a stopper is used. In this case, the engine 5 controls just the proportional opening of the stopper.
    FIG. 2
    Fig.z
    权利要求:
    Claims (1)
    [1]
    DEVICE FOR AUTOMATIC REGULATION OF FILLING OF A CASTING FORM, containing a casting ladle mounted on a traverse, a ladle rotation drive with an engine connected to a traverse by a cable, an optical sensor directed to molten metal, characterized in that, in order to increase productivity, the device further comprises a second an optical sensor directed at the molten metal located in the bucket, a third optical sensor directed at a stream of metal flowing from the bucket, the fourth optical sensor to, directed to the mold funnel, a bucket position sensor, sensors according to the number of sensors, a level gauge, a comparison unit, a level regulator, an amplifier and a chopper, each sensor being connected to a converter, the first output of the converter connected to the fourth optical sensor connected to one input of the comparison unit, the level switch is connected to another input of the comparison unit, the output of the converter connected to the third optical sensor, and the output of the comparison unit are connected to two inputs of the level controller, the output is ulyatora level is connected to the amplifier input, the output of which is connected with. the input of the chopper, to which the outputs of the transducers connected to the second optical sensor and the position sensor are connected, the output of the chopper is connected to the drive unit 1 , the output of the converter connected to the first optical sensor is connected to the converter connected to the fourth opt. With a probe, the second output of this · 'converter is connected to the converter connected to the third optical sensor.
    ABOUT)
    类似技术:
    公开号 | 公开日 | 专利标题
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    同族专利:
    公开号 | 公开日
    DE2639793C3|1980-11-13|
    FR2345254B1|1983-08-19|
    GB1572112A|1980-07-23|
    DE2639793A1|1977-09-29|
    JPS6146232B2|1986-10-13|
    FR2345254A1|1977-10-21|
    JPS52114533A|1977-09-26|
    IT1074820B|1985-04-20|
    US4210192A|1980-07-01|
    CH615609A5|1980-02-15|
    DE2639793B2|1980-03-20|
    DD130315A5|1978-03-22|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    US3122800A|1961-05-01|1964-03-03|Gen Motors Corp|Automatic metal pouring machine|
    DE1235520B|1962-11-14|1967-03-02|Bbc Brown Boveri & Cie|Device for automatic filling of molten metals from a tiltable crucible|
    DE1458181B2|1964-12-11|1974-01-17|Pierre Lyon Poncet |Arrangement for the automatic adjustment of the bath level of a metal melt in a continuous casting mold|
    US3842894A|1973-01-17|1974-10-22|American Metal Climax Inc|Automatic means for remote sweep-scanning of a liquid level and for controlling flow to maintain such level|
    US3838727A|1973-07-16|1974-10-01|I Levi|Normalized optical input level control in continuous casting process and apparatus|
    JPS5165029A|1974-11-29|1976-06-05|Unto Aizengiiserai Ee Dee Mets|CH624032A5|1977-09-05|1981-07-15|Mezger Ag Maschf Giesserei|
    CH629130A5|1979-06-07|1982-04-15|Mezger Ed Maschinenfabrik & Ei|AUTOMATICALLY CONTROLLED CASTING INSTALLATION.|
    US4470445A|1980-02-28|1984-09-11|Bethlehem Steel Corp.|Apparatus for pouring hot top ingots by weight|
    US4620353A|1981-06-15|1986-11-04|Pryor Timothy R|Electro-optical and robotic casting quality assurance|
    US4774751A|1981-06-15|1988-10-04|Diffracto, Ltd.|Electro-optical and robotic casting quality assurance|
    EP0095620B1|1982-05-27|1986-09-24|INTERATOM Gesellschaft mit beschränkter Haftung|Method and device for regulating the delivery capacity of an inductive delivery pump for liquid metals|
    DE3245832C1|1982-12-10|1983-11-03|Interatom Internationale Atomreaktorbau Gmbh, 5060 Bergisch Gladbach|Method and device for monitoring the final level when filling molds with liquid metal|
    US4558421A|1983-06-09|1985-12-10|Yellowstone, Ltd.|Control system for an automatic ladling apparatus|
    JPS6142473A|1984-08-06|1986-02-28|Moruganaito Carbon Kk|Automatic pouring device|
    US4683825A|1985-09-09|1987-08-04|Bethlehem Steel Corporation|Analog cam profile sensor system|
    JPS62171328U|1986-04-23|1987-10-30|
    US4744407A|1986-10-20|1988-05-17|Inductotherm Corp.|Apparatus and method for controlling the pour of molten metal into molds|
    US4724894A|1986-11-25|1988-02-16|Selective Electronic, Inc.|Molten metal pour control system|
    JPH0191960A|1987-09-30|1989-04-11|Mitsubishi Electric Corp|Industrial robot device|
    DE4103243A1|1990-02-21|1991-08-29|Inductotherm Corp|METHOD FOR CONTROLLING THE POURING OF A LIQUID FROM A VESSEL IN INDIVIDUAL CASTING MOLDS AND DEVICE FOR IMPLEMENTING THE METHOD|
    EP0747152B1|1995-06-07|1999-07-28|Inductotherm Corp.|Video positioning system for a pouring vessel|
    EP1097765A4|1999-04-28|2005-02-09|Sumitomo Metal Ind|Molten metal surface level control in mold in continuous casting|
    US6896032B1|2002-09-26|2005-05-24|Hayes Lemmerz International, Inc.|Stopper-poured molten metal casting vessel with constant head height|
    US6892791B1|2002-12-20|2005-05-17|Hayes Lemmerz International|Trajectory compensation for tiltable stopper-poured molten metal casting vessel|
    CN103506592B|2012-06-29|2015-08-26|宝山钢铁股份有限公司|A kind of continuous-casting steel pouring control method and device|
    CN102962437B|2012-10-22|2015-05-06|山东双港活塞股份有限公司|Automatic pouring device and method for piston|
    WO2016104666A1|2014-12-26|2016-06-30|テルモ株式会社|Liquid transport method|
    DE102015107951B4|2015-05-20|2018-09-13|INDUGA Industrieöfen u. Giesserei-Anlagen GmbH & Co. KG|Method and device of a control of the casting process during casting of a casting mold by means of a gravitationally empty rotatable ladle|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    CH354076A|CH615609A5|1976-03-22|1976-03-22|
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