TW201914711A - Method and device for detecting operational failure in casting line - Google Patents

Abstract

The objective of the present invention is to provide a detecting method and device with which it is possible to detect the location of an operational failure in a casting line using a minimal impact sensor, in a casting line for castings. An impact sensor (42) is attached to at least one molding flask (14) or surface plate truck (16), an impact value is measured while the casting line is operating, the measured impact value and the measuring position thereof are stored in association with one another and are compared with past impact values at the same measuring position, and a position at which a unique impact value is detected is identified as an operational failure location. Alternatively, impact sensors (41), (49) are attached respectively to a roller conveyor and to a surface plate truck transporting frame (27), the measured impact values are stored in association with the molding flask or the surface plate truck passing by the attachment position of the impact sensor, and are compared with past impact values to detect an operational failure.

Description

Method and device for detecting failure in foundry production line

The present invention relates to a method and apparatus for detecting a fault in a casting line of a casting. More specifically, it relates to a method and apparatus for detecting a faulty portion of a foundry line using a minimal impact sensor.

In the casting line of foundry castings, the steps of mold making, core packing, mold clamping of upper and lower molds, casting of molten metal, cooling of cast metal, removal of sand box and demoulding are carried out in sequence. . The solidified metal separated from the sand box and after the mold is removed is turned into a casting product by a riser, a cleaning, or the like. Further, the cast sand separated after the mold is removed is subjected to sand treatment and supplied again to the mold. Nowadays, in such a casting production line, there is still a case of casting defects regardless of the efforts of the relevant personnel. There are many forms of casting defects, and they are also produced according to the operating state of the equipment of the casting line. For example, "poor demoulding" or "falling sand" caused by the impact at the time of mold making or mold transfer; by the impact exerted on the mold before solidification of the cast metal, the mold wall is pressed to move the molten metal and moved. "Expansion mode" or "mismodeling". Here, as a technique for detecting an abnormal operation state of a foundry line, as a device for detecting an abnormal operation state of a foundry line, as shown in Patent Document 1, a detection acceleration and a level are mounted on a flask or a flat plate. Techniques for degree sensors are well known in the art.

However, in the prior art, it is specifically used to detect equipment defects after installation, but there is no normal inspection to produce the casting step. In addition, by installing a sensor for detecting acceleration and level on the flask or the plate, it is possible to check the state of the conveyor that transports the flask or the plate, but it is impossible to check the state of all the flasks or plates.

The present invention has been made in view of the above problems, and an object thereof is to provide a method and apparatus for detecting a faulty portion of a foundry line using a minimum impact sensor in a casting line of a casting. [Prior Art Document] [Patent Literature]

[Patent Document 1] Japanese Patent Publication No. 5-030837

In order to achieve the above object, the following constitutions (1) to (9) are employed in the present invention.

(1) A method for detecting a failure in a foundry line, wherein an impact sensor is mounted on at least one of a plurality of sand boxes or flat trolleys moving in a casting line, and the measurement is transmitted to the action of the casting line to The impact value of the sand box or the flat trolley, the measured impact value is associated with the measured position and stored, and the newly stored impact value is compared with the past impact value of the same measurement position, and the specific impact value is detected. The location is specific to the fault location.

(2) A method for detecting a failure in a foundry production line, which is provided with at least one impact sensor on a roller conveyor for transporting a sand box in a casting line, and a transport platform for a flat trolley, which will be casted in a production line In the action, the impact value measured by the impact sensor is associated with a sandbox or a flatbed trolley through its installation position, and the impact value of the new storage is compared with the impact value of the same sandbox or tablet trolley in the past. Specifically, it is a fault when a specific impact value is detected.

(3) A method of detecting a failure of a foundry line as in (1) or (2), wherein the impact sensor measures an impact of three directions of X, Y, and Z.

(4) A device for detecting a failure in a foundry line, comprising: an impact sensor mounted on at least one of a plurality of flasks or a flatbed in a foundry line; and a control device that is to be cast The impact value measured by the impact sensor in the operation of the production line is stored in association with the measurement position of the impact value; wherein the control device compares the newly stored impact value with the past impact value of the same measurement position, The position at which the specific impact value is detected is specified as the fault location.

(5) A device for detecting a failure in a foundry line, comprising: an impact sensor each mounted on a roller conveyor of a plurality of sand boxes in a transfer casting line, and a flat trolley transfer frame; a control device that correlates and stores the impact value measured by the impact sensor in the action of the casting line with a sandbox or a tablet trolley through its installation position; wherein the control device compares the newly stored impact value with the past The impact values of the same sand box or flat trolley are compared, and the point at which the specific impact value is detected is specified as a fault. (6) A device for detecting a failure in a foundry line as in (4), wherein the impact sensor has both a battery and a storage machine. (7) A device for detecting a failure in a foundry line as in (4), wherein the impact sensor has both a battery and a wireless transmitter.

(8) A device for detecting a failure in a foundry line as in (6) or (7), wherein the battery is charged via the electromagnetic induction transceiver. (9) A device for detecting a failure in a foundry line as in (6) or (7), wherein the battery is charged by a thermoelectric generator.

According to the method and device for detecting a fault in a casting line of the present invention, if a sand box or a flat table trolley equipped with an impact sensor is cycled on the production line, the faulty part of the entire production line can be inspected. In addition, the moving state can be checked from the impact value generated by the sand box or the flatbed trolley through the roller conveyor and the flat trolley transporting frame on which the impact sensor is mounted, when the sandbox or the flatbed trolley is on the production line. The failure of all sand boxes or flatbed trolleys can be checked in one cycle.

In addition, if the impact sensor can measure the impact of the X, Y, and Z directions in the three-axis direction, the direction of the fault condition can be specified.

In addition, if the impact sensor mounted on the flask or the flatbed has both a battery and a storage device, the impact value can be measured at any position. If the impact sensor mounted on the flask or the flatbed has both a battery and a wireless transmitter, the measured value can be received immediately without storing the measurement data in the sensor.

In addition, if the battery of the impact sensor mounted on the flask or the flatbed trolley is charged through the electromagnetic induction transceiver, it can be inline charged without additional charging. In addition, if the battery of the impact sensor mounted on the flask or the flatbed trolley is charged by a thermoelectric generator such as a thermoelectric element of a molten metal, the battery can be embedded and charged without additional charging. .

The present application is based on Japanese Patent Application No. 2017-190509, filed on Sep. 29,,,,,,,,,,, Further, the present invention can be further understood by the following detailed description. However, the detailed description and the specific embodiments of the present invention are intended to The Applicant does not intend to contribute any of the embodiments described to the public. In the disclosed changes and alternatives, the parts that may not be included in the scope of the patent application are also considered as part of the invention. In the description of the specification or the scope of the patent application, the use of the noun and the same terms are to be construed as both the singular and the plural unless they are not specifically defined. The use of any exemplification or exemplification of the present invention (such as "the") is intended to be illustrative only, and is not intended to limit the scope of the invention. Limit it.

Hereinafter, embodiments of the present invention will be described with reference to the drawings. Fig. 1 is a schematic configuration diagram of a casting system shown as an embodiment of the present invention. The casting system 1 of the mold with a sand box shown in Fig. 1 is alternately molded into the upper and lower molds in the main mold making machine, and is removed by the sand core receiving, boxing, casting, and cooling steps.・The lower sand box is separated and sent to the mold making step again. An impact sensor is mounted at the position shown in Figures 2 and 3 of the casting system 1 to detect the fault location of the production line. The details are further described below.

The casting system 1 includes a first production line 2, a second production line 3, a third production line 4, and a fourth production line 5. In the first line 2, the upper flask 14 and the lower flask 15 are moved on the roller conveyor in the right direction of FIG. 1 by the first pusher 6 and the first cushion 7 disposed at both ends thereof. In the second production line 3, the flat carriage 16 moves in the right direction on the rail by the second pusher 8 and the second cushion 9. In the third line 4, the sheet carriage 16 is moved to the left in the track by the third pusher 10 and the third cushion 11. In the fourth production line 5, the flat carriage 16 moves in the left direction on the rail by the fourth pusher 12 and the fourth cushion 13.

In the first line, the upper and lower flasks 14, 15 are alternately loaded in the main mold forming device 17 by the operation of the first pusher 6 and the first cushion 7, and are transported by a transfer device (not shown). The cast mold sand is filled in a sand box to mold. In the main mold forming apparatus 17, the upper mold 18 and the lower mold 19 are alternately molded with respect to the loaded upper and lower flasks 14, 15 by the rotation of the turntable to which the upper and lower patterns are attached. The mold for molding is pushed out from the main mold forming device 17 by the action of the first pusher 6 and the first cushion 7.

The upper and lower molds are pushed out from the main mold forming device 17 because the molding surfaces of the upper and lower molds 18 and 19 (the surfaces on which the castings are formed) are the same as the lower surface, and thus the first reversing machine 20 is reversed. The molding surface is the upper surface. After the reverse rotation, the upper and lower molds 18 and 19 are inspected by the operator or the like in the core center accommodation range 22, and the core mold is placed in the lower mold 19 when the core is applied.

Then, the upper and lower molds 18 and 19 are sent to the second reversing machine 21. The second reversing machine 21 reverses the upper mold 18 without performing the reverse rotation of the lower mold 19, and the molding surface of the upper mold 18 becomes the lower surface. Then, the upper and lower molds 18 and 19 are sent to the boxing device 23. In the stacking device 23, the lower mold 19 and the upper mold 18 are superposed on each other on the flatbed carriage 16. The overlapping molds are referred to as a box mold 24. The flatbed carriage 16 and the combined mold 24 are moved by the fitting device 23 to move the second line 3 of the pallet truck 16 by the action of the second pusher 8 and the second cushion 9. Further, in the present embodiment, the hook of the upper and lower flasks is used without using the weight to prevent the upper mold from floating due to the pressure of the soup at the time of casting.

Then, the box mold 24 that is stacked on the flatbed trolley 16 is placed at the position 25 by the conveyance rail impact sensor of the second line 3. The state of the pallet truck 16, the box mold 24, the conveyance rail 26, and the like which convey the rail impact sensor installation position 25 is shown in the front view of FIG. 2 and FIG. 3 of the left side view. In addition, a partial cross section and an enlarged view of the portion are shown in FIGS. 2 and 3. In addition, in FIG. 2, the form of the flask impact sensor unit mentioned later is also shown together. The flatbed carriage 16 on which the cassette mold 24 is loaded is driven on the conveyance rail 26 as shown in Figs. 2 and 3 . This conveyance rail 26 is attached to the conveyance frame 27. The transport frame 27 is provided in a plurality of transport rails 26 so that the pallet truck 16 on which the mold box mold 24 is loaded can travel stably.

In the conveyance rail impact sensor installation position 25, the conveyance frame 27 is provided with the conveyance frame impact sensor 41 as an impact sensor. The transport frame impact sensor 41 measures the impact of X (traveling direction), Y (horizontal direction orthogonal to the traveling direction), and Z (vertical direction) when the pallet truck 16 carrying the combined mold 24 passes. The value is sent to the line monitoring disk 62, which will be described later.

2 and 3, a flask impact sensor 42 as an impact sensor is mounted on an upper flask 14. Although the configuration of the flask impact sensor unit is A to D4, it will be described here with the form A shown in the enlarged view A of FIG. The form of B to D other than this will be described later. The flask impact sensor 42 is connected to the storage device 43 and the battery 44, and measures the impact of X (traveling direction), Y (horizontal direction orthogonal to the traveling direction), and Z (vertical direction) applied to the flask, and saves This impact value is in the storage device 43. The impact measurement value stored in the storage device 43 is read into the line monitoring disk 52 when the flask 14 is stopped at a predetermined position on which the flask impact sensor 42 is mounted. In addition, the flask impact sensor unit is preferably shown in an enlarged view of FIG. 3, and is disposed in a backlight or a non-obtrusive portion of the flask in a manner corresponding to overflow of the soup during pouring.

The pallet truck 16 carrying the cassette mold 24 is transported to the casting range 28 by transporting the track impact sensor setting position 25. In the pouring range 28, molten metal is poured into the mold box 24 by means of the pouring device 30 running on the casting device travel track 29. The cast box mold 24 to be poured is referred to as a casting mold 31. Further, the molten metal of the pouring device 30 is supplied from a melting furnace (not shown) using a ladder (not shown).

Then, the casting mold 31 is sent to the first transfer table 32. The first transfer platform 32 transfers the flatbed carriage 16 fed from the second production line 3 and the casting mold 31 to the third production line 4 or the fourth production line 5 by means of a traveling trolley. The flatbed carriage 16 that is transferred to the third production line 4 by the first transfer platform 32 and the casting mold 31 are conveyed by the operation of the third pusher 10 and the third cushioning pad 11. The flatbed trolley 16 and the casting mold 31 transferred from the first transfer platform 32 to the fourth production line 5 are the same as those of the third production line 4, and are driven by the fourth pusher 12 and the fourth cushion 13 Move by action. In the flatbed carriage 16 and the casting mold 31 which are transferred to the third production line 4 or the fourth production line 5, the molten metal to be poured is solidified and cooled during the conveyance.

The flatbed carriage 16 transported to the end of the third production line 4 or the fourth production line 5 and the casting mold 31 are fed to the second transfer platform 33. The second transfer platform 33 transfers the flatbed carriage 16 fed from the third production line 4 or the fourth production line 5 and the casting mold 31 to the second production line 3 by means of the traveling carriage. The flatbed carriage 16 that has been transferred to the second production line 3 and the casting mold 31 are conveyed by the operation of the second pusher 8 and the second cushioning pad 9.

The casting mold 31 conveyed from the second production line 3 to the punching device 34 is lifted from the flatbed carriage 16 by the punching device 34. The casting mold 31 is moved to the mold removing device 35, and the casting mold and the cast metal solidified casting are taken out from the upper and lower flasks 14, 15. The extracted mold and casting are separated into casting sand and casting by the mold removing device 35, and transferred to a processing step not shown. The mold and the casting have been extracted. The lower and lower flasks 14, 15 are returned to the pallet truck 16 of the second line 3 by the perforating device 34.

Then, the upper and lower flasks 14 and 15 which are returned to the second production line 3 are transported to the flask separation device 36 to separate the upper and lower flasks 14, 15. The flask separation device 36 moves the lower flask 15 and the upper flask 14 which are superposed on the lower deck 16 to the first production line 2. The flask separation device 36 grabs the uppermost upper mold 14 and places it on the roller conveyor of the first line 2. The upper flask 14 is pushed out by the action of the first pusher 6 and the first cushion 7. Then, the flask separation device 36 grabs the lower flask 15 and places it on the roller conveyor of the first line 2. The lower flask 15 is pushed out by the action of the first pusher 6 and the first cushion 7. When the operations are completed, the flask separation device 36 returns the pallet truck 16 from which the upper and lower flasks 14 and 15 are removed to the second line 3. The flatbed carriage 16 returned to the second production line 3 is conveyed on the second production line 3, and the upper and lower molds 18 and 19 are placed again on the container unit 23.

The upper and lower flasks 14, 15 are transported by the first pusher 6 and the first cushion 7 on the roller conveyor of the first line 2, and are set by the roller conveyor impact sensor. Location 37. At the roller conveyor impact sensor installation position 37, as shown in Figs. 5 and 6, a roller conveyor impact sensor 49 is provided on the roller frame 38. The roller conveyor impact sensor 49 measures the impact of the X (traveling direction), Y (horizontal direction orthogonal to the traveling direction), and Z (vertical direction) when the upper and lower flasks 14 and 15 pass, respectively. The measured impact value is sent to the line monitoring disk 52, which will be described later. Thereafter, the upper and lower flasks 14, 15 are conveyed to the master molding machine 17 each time the mold is formed, and when it reaches the master molding machine 17, the mold is molded in the flask. And repeat the above actions in the mold production line.

Hereinafter, an operation in the case of using these configurations will be described with reference to Fig. 7 . As shown in the block diagram of Fig. 7, the operation of the casting system 1 is controlled by a control panel and a production line control panel 51 attached to the main molding machine 17 and the pouring device 30, respectively. The production line control panel 51 controls the operation of transporting the flatbed cart 16 , and controls the first to fourth production lines of the upper and lower flasks 14 and 15 , the first and second reversing machines 20 and 21 , and the box assembly 23 . The first and second transfer tables 32 and 33, the punching device 34, the mold removing device 35, and the sand box separating device 36 operate. Further, the control panel attached to the main molding machine 17 and the pouring device 30, and the production line control panel 51 are electrically connected to the production line monitoring panel 52. In addition, the casting system 1 may not need to have the production line control panel 51, the production line monitoring tray 52, and the control panel respectively attached to the main molding machine 17 and the pouring device 30, or the production line control panel 51 may be produced. The line monitoring discs 52 are combined into one control panel, or may be used as a control panel including the control panel respectively attached to the main molding machine 17 and the pouring device 30, and may have any configuration. Control panel. In the present specification, these control panels are collectively referred to as "control devices."

(Transport Frame Impact Sensor) The line monitoring disk 52 is electrically connected to the transport frame impact sensor 41, and reads the impact measurement values in the X, Y, and Z directions detected by the transport frame impact sensor 41. The impact measurement value read in is associated with the number of the pallet truck 16 passing through the frame impact sensor installation position 25 and the flask number of the box mold 24, and is stored in the line monitoring disk 52. Each time the flatbed trolley 16 of the second production line 3 is transported, the above-described operations are repeated, and the traveling state of all the flatbed trolleys 16 can be grasped after one cycle of the flatbed trolleys 16. In the line monitoring tray 52, the association between the number of the flatbed trolley 16 and the flask number of the box mold 24 is established, and when the specific impact value different from the normal operation is detected from the stored impact measurement value, an alarm is issued. Wait for the production line manager to wait for the disposal of the production line. Further, the specific impact value different from that in the normal operation, for example, the impact value measured when the pallet truck 16 passes the transport frame impact sensor installation position 25 is determined even in comparison with the previous 20 flat trolleys 16. When the average value of the impact value is 30% or more, it may be determined by other appropriate methods. Here, the number of the flatbed carts 16 before it, or a ratio larger than the average value can be appropriately selected.

(Roller Conveyor Impact Sensor) In addition, the line monitoring disk 52 is electrically connected to the roller conveyor impact sensor 49 as an impact sensor, and is read into the roller conveyor impact sensor 49. The impact measurement values in the X, Y, and Z directions were detected. The impact measurement value read in is associated with the flask number of the flask 14 and the lower flask 15 above the roller conveyor impact sensor setting position 37 and stored in the line monitoring tray 52. Each time the sandbox is transported on the roller conveyor of the first line 2, the above operations are repeated, and when the upper and lower flasks 14, 15 are cycled, all of the upper flask 14 and the lower flask 15 can be grasped. The status of the transfer. In the line monitoring disk 52, when the specific impact value different from the normal operation is detected based on the impact measurement value associated with the number of the flask, an alarm is issued to notify the line manager, and the line is stopped. In addition, the specific impact value different from the normal operation, for example, the impact value measured when the certain flasks 14 and 15 pass the roller conveyor impact sensor setting position 37 is set to be 20 times earlier than the previous one. The impact value in the case where the average value of the impact values measured in the upper and lower flasks 14 and 15 is 30% or more is determined by other appropriate methods. Here, the number of the lower flasks 14 and 15 or the ratio larger than the average value may be appropriately selected.

(Configuration and Operation of the Sandbox Impact Sensor) Next, a state in which the impact sensor 42 is attached to the flask will be described. As described above, the configuration of the flask impact sensor unit has four types of A to D, and first, it will be described from the form (analog A) of the enlarged view A of Fig. 2 . The flask impact sensor 42 is connected to the storage device 43 and the battery 44, and measures the impact of X (traveling direction), Y (horizontal direction orthogonal to the traveling direction), and Z (vertical direction) applied to the flask. The impact value is stored in the storage device 43 together with the measurement time. The impact measurement value stored in the storage device 43 is at a predetermined position, and is read into the line monitoring disk 52 when the flask 14 is stopped when the flask impact sensor 42 is mounted. The data reading in the line monitoring disk 52 is performed by reading data by connecting a cable, or taking out a storage medium provided in the storage device 43, and the like.

The impact measurement value of the read sand box is recorded from the time and the operation record of the line control panel 51 connected to the line monitoring disk 52, and is stored and stored in association with the position of the line. Further, when the flask having the impact sensor is molded in the master molding device 17, the number of the flask is associated with the molding step and position and stored in accordance with the operation record of the master molding device control panel. In the production line monitoring tray 52, if the impact measurement value of the flask is read, the processing is immediately performed, and the newly read impact value is compared with the impact value read in the past, and when the recording is different from the normal operation. In the case of a specific impact value, the position of the line management is notified by means of an alarm or the like. In addition, when the line of production is stopped and the data of the impact value is read, the charging operation of the battery 44 may be performed together, or may be exchanged with the person who has completed the charging. In addition, the specific impact value different from the normal operation, for example, in a certain sand box 14, the impact value measured at a certain position of a certain step is even more than the 20 upper sand boxes 14 before it, When the average value of the step and the impact value measured at the position is 30% or more, or in the case where the sand box 14 is larger than the average value of the impact value measured in the past, it may be used. Other appropriate methods to decide. Here, the ratio of the number of the flasks 14 above or above the average value can be appropriately selected.

Next, the configuration B of the flask impact sensor unit will be described. The configuration B of the flask impact sensor unit is shown in enlarged view B of FIG. 2, and includes a flask impact sensor 42, a battery 44, and a wireless transmitter 45. The impact value measured by the flask impact sensor 42 during the operation of the transport system 1 is immediately transmitted to the line monitoring disk 52 by the wireless transmitter 45.

In the line monitoring disk 52, the impact value measured by the flask impact sensor 42 is compared with the main mold forming device control panel, the pouring device control panel, the production line control panel 51, and is associated with the step and position for measuring the impact. storage. The impact value of the measured (received) is compared with the stored impact value of the step and the position, and when the specific impact value different from the normal operation is recorded, the person in charge of the production line is issued by issuing an alarm or the like. Notify the steps, location, and take care of the production line stop. In addition, when the work of one day is stopped, or when the production line is stopped before the start of the work, the charging operation of the battery 44 may be performed, or may be exchanged with the person who has completed the charging.

Next, the configuration C of the flask impact sensor unit will be described. The configuration of the flask impact sensor unit C is shown in enlarged view C and FIG. 7 of FIG. 4, and includes a flask impact sensor 42, a storage device 43 or a wireless transmitter 45, a battery 44, and an electromagnetic induction charger. 46. The electromagnetic induction receiver 46 is mounted on the side of the upper flask 14 and is in proximity to the electromagnetic induction transmitter 47 as the tablet 16 travels. The battery 44 can also be charged when the electromagnetic induction receiver 46 is in proximity to the electromagnetic induction transmitter 47. The electromagnetic induction transmitter 47 is provided in one or a plurality of lines in the production line.

In the case of the configuration C of the flask impact sensor unit, when the storage device 43 is configured, the measured impact value is stored in the storage device 43 together with the measurement time. In this case, the processing of the impact data stored in the storage device 43 is the same as the configuration A. Further, in the case where the wireless transmitter 45 is constructed, the impact value measured by the flask impact sensor 42 during the operation of the casting system 1 is immediately transmitted from the wireless transmitter 45 to the line monitoring disk 52. In this case, the processing of the impact data is the same as that of the configuration B.

Next, the configuration D of the flask impact sensor unit will be described. The configuration D of the flask impact sensor unit is shown in enlarged view D and FIG. 7 of FIG. 2, and includes a flask impact sensor 42, a storage device 43 or a wireless transmitter 45, a battery 44, and a thermoelectric generator 48. . The thermoelectric generator 48 is mounted on the side of the upper flask 14 and generates electricity by the temperature difference from the heat transferred from the molten metal to the flask at the time of pouring to the temperature difference generator 48, and the generated electric power is charged into the battery 44.

In the case of the configuration D of the flask impact sensor unit, when the storage device 43 is configured, the measured impact value is stored in the storage device 43 together with the measurement time. In this case, the processing of the impact data stored in the storage device 43 is the same as the configuration A. Further, in the case where the wireless transmitter 45 is constructed, the impact value measured by the flask impact sensor 42 during the operation of the casting system 1 is immediately transmitted from the wireless transmitter 45 to the line monitoring disk 52. In this case, the processing of the impact data is the same as that of the configuration B. Further, the flask impact sensor unit of each of the configuration forms A to D may be attached to the flatbed carriage 16.

As can be clearly understood from the above description, according to the present invention, the transport state of the flask or the flatbed trolley passing through the transport frame on which the impact sensor is mounted can be checked, and the sandbox of the impact sensor or A flat trolley can check the status of a series of production lines after a cycle on the casting line. In addition, in the present invention, if the impact sensor is set to simultaneously measure the three axes of X, Y, and Z, the direction of the fault condition can be specified.

The invention prevents the occurrence of casting defects caused by the failure of the casting line by detecting the failure of the casting line. For example, in the case where an impact is generated in the main mold forming device 17 at the time of mold casting, there is a failure in which one part of the mold is disintegrated due to the impact and becomes "poor release". When the specific impact value different from the normal value is detected as described above, the person in charge of the production line management is notified by issuing an alarm or the like, and disposal such as stop of the production line is taken. Further, when a specific impact value is detected, in order to alleviate the impact at the time of molding, a command is issued from the line monitoring disk 52 to the main mold forming device 17, so that the operating speed of the main mold forming device 17 is lowered to an optimum state. Thereby, the impact at the time of molding which is generated in the main mold forming device 17 is alleviated.

In addition to the above-mentioned "poor demoulding", the casting defects caused by the malfunction of the production line include "falling sand", "missing mode", "expansion mode", etc., and the specificity is detected in the casting line. In the case of the impact value, the operation speed of the main mold forming device 17, the pouring device 30, or the casting line is controlled in accordance with an instruction from the line monitoring disk 52, thereby alleviating the occurrence of each part. Impact to prevent casting defects.

In the present invention, the impact sensor mounted on the flask or the flatbed trolley can measure the impact value at any position by both the battery and the storage device, and can check the state of the production line. Further, in the present invention, the impact sensor mounted on the flask or the flatbed trolley can be set to wirelessly transmit the measured impact value. Thereby, the data can be collected in the control device without being stored in the sensor. Further, in the present invention, the charging of the battery of the impact sensor mounted on the flask or the flatbed trolley can be set as a wireless charging type by electromagnetic induction. Thereby, embedded charging can be performed without additional charging operation. Further, in the present invention, the charging of the battery of the impact sensor mounted on the flask or the flatbed trolley may be a charging type by a thermoelectric generator such as a thermoelectric element using heat of molten metal. Thereby, embedded charging can be performed without additional charging operation.

Further, the method and apparatus for detecting a failure in the foundry line of the present invention are not limited to the above-described embodiments described with reference to the drawings, and various other modifications can be considered within the technical scope thereof. For example, in the embodiment, the tablet truck according to the present invention has a wheel on the flat plate and moves on the rail. However, the present invention is not limited thereto, and the same effect can be obtained even if the flat plate is moved on the roller.

Further, the casting line of the above-described embodiment is an example of a casting line using a sand box using an upper and a lower flask, but is not limited to a casting line with a flask, and the casting line without a sandbox is also used in the same manner. effect. In the case of no sandbox casting production line, since the sand box does not circulate on the production line, if the impact sensor is provided on the flat trolley that transports the upper and lower molds, the impact sensor of the transport frame can be implemented as described above. The shape is the same. When it is applied to the case of no sandbox casting production line, although it is impossible to grasp the state in the molding device, the steps of the casing which are not included in the casting line with the sand box are included, and can be carried. The overall status check of the production line of the flatbed trolley.

Further, in the above embodiment, the hook of the upper and lower flasks is used to prevent the upper mold from floating due to the pressure of the soup during casting, or the weight of the weight of the weight to prevent the upper mold from floating, or The floating mold box can also be prevented by the weight of the upper sand box.

Further, in the description of the above embodiment, the impact value is measured, but the impact value has the same meaning as the acceleration, and the same effect can be obtained even if the acceleration is measured by the acceleration sensor.

In addition, the configuration exemplified in the above embodiment can be appropriately selected as long as it does not deviate from the gist of the present invention, or can be appropriately changed to another configuration.

Hereinafter, the main symbols used in the present specification and drawings will be collectively shown.

1‧‧‧ casting system

14‧‧‧Upper sand box

15‧‧‧ lower sand box

16‧‧‧Table trolley

17‧‧‧Main mold making device

26‧‧‧Transfer track

27‧‧‧Transfer framework

30‧‧‧ pouring device

38‧‧‧Roller frame

41‧‧‧Transport frame impact sensor

42‧‧‧ sand box impact sensor

43‧‧‧Storage device

44‧‧‧Battery

45‧‧‧Wireless transmitter

46‧‧‧Electromagnetic induction receiver

47‧‧‧Electromagnetic induction transmitter

48‧‧‧Wide difference generator

49‧‧‧Roller conveyor impact sensor

51‧‧‧Product line control panel

52‧‧‧Product line monitoring disk

Fig. 1 is a plan view showing the construction of a casting line with a flask. Fig. 2 is a front elevational view showing a sand box, a flatbed trolley, and a transport rail on which an impact sensor is mounted. Fig. 3 is a left side view showing the flask and the flatbed trolley on which the impact sensor is mounted and the transport rail. Fig. 4 is a left side view showing the flask and the flatbed trolley on which the impact sensor is mounted and the transport rail. Figure 5 is a front elevational view showing a roller conveyor equipped with an impact sensor. Fig. 6 is a side view showing a roller conveyor to which an impact sensor is mounted. Figure 7 is a block diagram showing the control means of the casting line.

Claims (9)

A method for detecting a failure in a foundry line, wherein an impact sensor is mounted on at least one of a plurality of sand boxes or flat trolleys moving in a casting line, and the measurement is transmitted to the sand box during the action of the foundry line or The impact value of the flat trolley is associated with the measured impact value and stored, and the newly stored impact value is compared with the past impact value of the same measurement position, and the position where the specific impact value is detected is specified as the fault. Part. A method for detecting a failure in a foundry line, which is provided with at least one impact sensor on a roller conveyor for transporting a sand box in a casting line, and a transport platform for a flat trolley, which will be in the action of the casting line The impact value measured by the above impact sensor is associated with and stored by a sand box or a flatbed trolley through its installation position, and the impact value of the new storage is compared with the impact value of the same sand box or flat trolley in the past for detection. The point to the specific impact value is specified as a fault. A method of detecting a failure of a foundry line, as in claim 1 or 2, wherein the impact sensor measures the impact of the X-axis direction of X, Y, and Z. An apparatus for detecting a fault in a foundry line, comprising: an impact sensor mounted on at least one of a plurality of sand boxes or a flatbed in a foundry line; and a control device that will be in the foundry line The impact value measured by the impact sensor is associated with the measured position of the impact value and stored; wherein the control device compares the newly stored impact value with the past impact value of the same measurement position, and detects The location of the specific impact value is specified as the fault location. A device for detecting a failure in a foundry line, comprising: an impact sensor, each of which is mounted on a roller conveyor of a plurality of sand boxes in a casting production line, and a flat trolley conveying frame; and a control device, The impact value measured by the impact sensor in the action of the casting line is associated with and stored in a sand box or a flatbed trolley through the installation position thereof; wherein the control device compares the impact value of the new storage with the past The impact values of the same sand box or flat trolley are compared, and the point at which the specific impact value is detected is specified as a fault. The apparatus for detecting a failure in a foundry line according to the fourth aspect of the patent application, wherein the impact sensor has both a battery and a storage machine. The apparatus for detecting a fault in a foundry line according to item 4 of the patent application, wherein the shock sensor has both a battery and a wireless transmitter. A device for detecting a failure in a foundry line, as in claim 6 or 7, wherein the battery is charged via an electromagnetic induction transceiver. A device for detecting a failure in a foundry line, as in claim 6 or 7, wherein the battery is charged by a thermoelectric generator.