JP6863449B2 - How to operate casting equipment and operating equipment - Google Patents

Description

The present invention relates to an operating method and an operating device of a casting facility for producing a casting by pouring molten metal into a mold molded on a molding line.

Conventionally, in a molding line as a casting facility, it has been known to collect various data from the molding line during casting production and to monitor the molding line (see, for example, Patent Document 1). ..

In casting production using casting equipment, defective castings are often produced for some reason. However, in Patent Document 1, how to use various data collected from the molding line to prevent the occurrence of defective castings has not been examined concretely and in detail. For this reason, there is a problem that it is not possible to immediately respond to the occurrence of defective castings and the production plan of castings is disturbed.

The present invention has been made in view of the above problems, and an operating method and an operating device for a casting facility capable of promptly responding to the occurrence of defective castings and suppressing disturbance of a casting production plan. The purpose is to provide.

Japanese Unexamined Patent Publication No. 2001-321927

In order to achieve the above object, the method of operating the casting equipment of the present invention includes a step of measuring at least one unique data in at least one device constituting the casting equipment and storing the data in a database, and the stored unique data. It is characterized by having a step of determining the occurrence of at least one defect based on data, and a step of encouraging measures related to the operation of the casting equipment in order to eliminate the occurrence of the defect.

Further, the method of operating the casting equipment of the present invention is characterized in that the step of determining the occurrence of the defect includes a step of determining whether or not the unique data is out of a preset threshold value or an allowable range. ..

Further, the method of operating the casting equipment of the present invention is characterized in that a plurality of the unique data in the plurality of the devices constituting the casting equipment are measured and collected for each lot and stored in the database.

Further, the method of operating the casting equipment of the present invention is characterized in that the defect is a misalignment of the upper and lower molds that are molded and matched by the mold molding line that constitutes a part of the casting equipment.

Further, the method of operating the casting equipment of the present invention is characterized by including a step of estimating the source of the defect during the operation of the casting equipment.

Further, the method of operating the casting equipment of the present invention is characterized in that the defect is a misalignment of the upper and lower molds which are molded and matched by a frame drawing machine which constitutes a part of the casting equipment.

Further, in the method of operating the casting equipment of the present invention, the step of estimating the source of the mold deviation during the operation of the casting equipment is in the extrusion direction of the upper and lower molds when the upper and lower molds are extruded from the frame drawing machine. It includes a step of measuring the first acceleration by the first acceleration sensor and a step of measuring the second acceleration in the extraction direction of the upper and lower molds when the frame is removed by the frame drawing machine by the second acceleration sensor. It is characterized by.

Further, in the method of operating the casting equipment of the present invention, a threshold value or an allowable range is set in advance for the first acceleration and the second acceleration, and the threshold value or the allowable range is changed during the operation of the casting equipment. It is characterized by.

Further, the method of operating the casting equipment of the present invention is characterized in that the acceleration in the vertical direction of the vertical mold is further measured by the first acceleration sensor.

Further, in order to achieve the above object, the operation device of the casting facility of the present invention stores the measuring means for measuring at least one unique data in at least one device constituting the casting facility and the measured unique data. The database is provided with a control means for determining the occurrence of at least one defect based on the stored unique data.

Further, the operating device of the casting equipment of the present invention is characterized in that the defect is a misalignment of the upper and lower molds which are molded and matched by the molding line forming a part of the casting equipment.

Further, in the operating device of the casting equipment of the present invention, the defect is the shape deviation of the upper and lower molds molded and matched by the frame-cutting machine forming a part of the casting equipment, and the mold deviation is detected. It is characterized by being equipped with a mold misalignment detection device.

Further, the operating device of the casting equipment of the present invention includes a first acceleration sensor mounted on a mold extrusion member in a mold extrusion device that extrudes the upper and lower molds to the outside of the frame extraction machine, and a frame extraction in the frame extraction machine. It is characterized by including a second acceleration sensor mounted on a mold receiving member that receives the upper and lower molds at the time of casting.

The present invention is a step of measuring at least one unique data in at least one apparatus constituting a casting facility and storing it in a database, and a step of determining the occurrence of at least one defect based on the stored unique data. And, in order to eliminate the occurrence of the defect, the process of urging the action related to the operation of the casting facility is provided, so that it is possible to promptly respond to the occurrence of the defective casting, and the production plan of the casting is disturbed. There are various effects such as being able to suppress.

This application is based on Japanese Patent Application No. 2017-047517 filed on March 13, 2017 in Japan, the contents of which form part of the content of this application.
Also, the present invention will be more fully understood by the following detailed description. However, detailed description and specific examples are preferred embodiments of the present invention and are provided only for purposes of explanation. This is because various changes and modifications are obvious to those skilled in the art from this detailed explanation.
The applicant has no intention of presenting any of the described embodiments to the public and is equivalent to any of the disclosed modifications or alternatives that may not be literally included in the claims. It is a part of the invention under the theory.
In the description of the specification or claims, the use of nouns and similar demonstratives should be construed as including both singular and plural unless otherwise indicated or expressly denied by the context. The use of any of the exemplary or exemplary terms provided herein (eg, "etc.") is merely intended to facilitate the description of the invention and is not specifically stated in the claims. As long as it does not limit the scope of the present invention.

It is a schematic block diagram which shows the embodiment of the casting equipment of this invention. It is a schematic configuration plan view which shows the mold deviation detection device. It is a front view which shows a part of the frame drawing mold molding line. It is a plan view which shows a part of the frame drawing mold molding line, and is the figure which shows the state which extruded the upper and lower molds. It is a flowchart for demonstrating the example of estimating the source of the shape deviation. It is a partial schematic diagram for demonstrating the frame removal operation.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. In the present invention, the casting equipment is equipment for producing castings by casting. The casting equipment referred to here includes a sand processing line for preparing casting sand to be molded, a mold molding line for molding a mold, a pouring line for pouring molten metal into a molded mold, and a molten metal for pouring. Even if only one of the molten metal transfer line to be prepared, the post-treatment line to perform a predetermined treatment (for example, dam folding) on the produced casting, and the inspection line to inspect the produced casting, this include. Further, even a combination of a plurality of lines selected from a sand treatment line, a molding line, a pouring line, a molten metal transfer line, a post-treatment line, and an inspection line is included in this. The molding line also includes a cooling line for cooling the casting (product) in the mold.

The outline configuration of the casting equipment of the present embodiment will be described with reference to FIG. The casting equipment of the present embodiment is an equipment for producing a casting by molding a mold using casting sand (raw sand in the present embodiment) and pouring molten metal into the molded mold. As shown in FIG. 1, the casting facility is provided with a sand processing line 100, and a molding line 200 is arranged downstream of the sand processing line 100.

A pouring line 300 is arranged at a position adjacent to the molding line 200, and a molten metal transfer line 400 is arranged upstream of the pouring line 300. Further, a post-treatment line 500 is arranged downstream of the molding line 200, and an inspection line 600 is arranged downstream of the post-treatment line 500.

The casting equipment configured in this way measures, collects, and stores a plurality of unique data of a plurality of devices constituting the casting equipment for each lot in a database. In the present invention, each lot means, for example, one mold or one product. Here, each mold means each upper and lower mold to be molded, and one product means one product. Further, in the present invention, the unique data means data that can be measured by an apparatus.

In this embodiment, a plurality of unique data in a plurality of devices are measured and collected for each template and stored in a database. Regarding this point, for example, in the frame drawing machine 201 forming a part of the mold molding line 200, for example, the squeeze pressure of the upper and lower molds is measured as unique data. The squeeze pressure is measured by a pressure sensor as a measuring means. In addition, the pressure of aeration air for filling the casting frame with casting sand is measured. The pressure of aeration air is measured by a pressure sensor as a measuring means, which is different from the pressure sensor as the squeeze pressure measuring means.

Further, in the molding machine upper belt feeder 202 that forms a part of the molding machine upper belt feeder 202, as specific data, for example, the compressive strength, tensile strength, shear strength, water content, and ventilation of the casting sand on the molding machine upper belt feeder 202. Measure the degree, compaction value, and sand temperature. The sand properties of these casting sands are measured by a sand property measuring device as a measuring means adjacent to the upper belt feeder 202 of the molding machine.

The plurality of unique data in the plurality of devices measured and collected in this way are stored in the database 701 in the control means 700 (control panel in the present embodiment) for each template. The sand processing line 100, the molding line 200, the pouring line 300, the molten metal transfer line 400, the post-processing line 500, the inspection line 600, and the control means 700 constituting the casting facility are electrically connected. (The connection status is not shown)

In this embodiment, not only the mold molding line 200 described above, but also the sand treatment line 100, the pouring line 300, the molten metal transfer line 400, the post-treatment line 500, and the inspection line 600 are used for each mold as needed. A plurality of unique data in a plurality of devices are measured and collected, and stored in the database 701. (Specific examples omitted)

As described above, in the present embodiment, in the sand treatment line 100, the mold molding line 200, the pouring line 300, the molten metal transfer line 400, the post-treatment line 500, and the inspection line 600 constituting the casting facility, a plurality of devices are used for each mold. A plurality of unique data in the above are measured and collected, and stored in the database 701. Therefore, a plurality of unique data in the plurality of devices constituting the casting facility are associated with each mold and stored in the database 701.

Next, an example of determining the occurrence of a defect based on the unique data stored in the database 701 will be described. In the present invention, the term "defective" refers to a factor that causes defective castings. As an example of the defect, there is, for example, "mold deviation" which is a mold defect due to the displacement of the upper and lower molds that have been matched. When the molten metal is poured into the upper and lower molds that are out of shape, the upper half and the lower half of the casting are misaligned, resulting in a defective casting.

Here, an example of determining the occurrence of out-of-shape based on the unique data stored in the database 701 will be described. FIG. 2 shows the upper and lower molds 1 and 2 intermittently transported by one pitch (one mold) by a transport means (pusher device and cushion device) (not shown) in the frame-cutting mold molding line in a plan view. The transport direction of the upper and lower molds 1 and 2 is the Y-axis direction, and the direction orthogonal to the transport direction of the upper and lower molds 1 and 2 is the X-axis direction. A mold misalignment detection device 3 that can be raised and lowered is arranged at a position adjacent to the upper and lower molds 1 and 2. Reference numeral 7 is a support frame of the first distance measuring means 4, the second distance measuring means 5, and the third distance measuring means 6, and these three distance measuring means use a laser displacement sensor in this embodiment.

First, in the upper mold 1, the distance S1 to the point 1a by the first distance measuring means 4, the distance S2 to the point 1b by the second distance measuring means 5, and the distance S3 to the point 1c by the third distance measuring means 6. To measure. The measured distances S1, S2, and S3 are stored in the database 701, and the calculation means 702 calculates the horizontal center position and rotation angle of the upper mold 1.

Next, the shape deviation detection device 3 is lowered by an elevating cylinder (not shown). After that, in the lower mold 2, the distance S4 to the point 2a by the first distance measuring means 4, the distance S5 to the point 2b by the second distance measuring means 5, and the distance S6 to the point 2c by the third distance measuring means 6. To measure. This measurement is performed intermittently while the upper and lower molds 1 and 2 are stopped. The measured distances S4, S5, and S6 are stored in the database 701, and the calculation means 702 calculates the horizontal center position and the rotation angle of the lower mold 2.

The calculation means 702 calculates the position coordinates of the four corners of the rectangle from the center positions and rotation angles of the upper mold 1 and the lower mold 2. Then, the distances between the horizontal coordinates of the four opposite corners of the upper mold 1 and the lower mold 2 are calculated. The shape deviation is determined based on the distance between the horizontal coordinates of the four opposite corners of the upper mold 1 and the lower mold 2 calculated by the calculation means 702. In the present embodiment, the permissible range of the distance between horizontal coordinates is 0.5 mm or less, and in this case, the permissible range is 0 to 0.5 mm. It is checked whether the deviation of the four corners is within this allowable range, and the shape deviation is determined.

This determination may be performed by the calculation means 702, or may be performed by a calculation means (not shown) dedicated to the shape deviation detection device 3. In the present embodiment, if any one of the four corners is out of the allowable range, it is determined to be out of shape.

When it is determined that the mold is out of shape as described above, measures related to the operation of the casting equipment are urged in order to eliminate the occurrence of the out of shape in the future. An example of this will be described. One of the causes of the mold misalignment is the initial speed at which the mold of the mold extrusion device 8 (see FIG. 3) for extruding the upper and lower molds 1 and 2 onto the surface plate trolley 10 outside the machine from the frame drawing machine 201. Is too fast. Therefore, the initial speed of the mold extrusion device 8 is urged to be slowed down. For example, the control means 700 may transmit a signal for causing the operation, display the operation so that the operation is performed, or emit an alarm sound for the operation. When prompted to slow down the initial velocity of the mold extrusion device 8, the initial velocity setting is corrected automatically or manually. Such measures are taken to eliminate the occurrence of shape deviation from the next cycle.

If it is determined that the mold is out of shape, the above-mentioned measures are taken to eliminate the occurrence of the out-of-shape from the next cycle, so that there is virtually no problem. However, in addition to this, it is more preferable to estimate the source of the out-of-shape during the operation of the casting equipment. Next, an example in which the source of mold misalignment is estimated during the operation of this casting facility will be described by taking a frame-cutting mold molding line as an example.

FIG. 3 is a front view showing a part of the frame-cutting mold molding line. In FIG. 3, reference numeral 8 is a mold extrusion device arranged on the base 9 of the frame drawing machine 201. Here, the configuration of the mold extrusion device 8 will be described with reference to FIG. FIG. 4 is a plan view showing a part of the frame-cutting mold molding line, and is a diagram showing a state in which the upper and lower molds 1 and 2 are extruded.

The mold extrusion device 8 includes two first cylinders 8a arranged at intervals. An intermediate member 8b is connected to the tip of the piston rod of the first cylinder 8a. A second cylinder 8c is mounted in the center of the intermediate member 8b, and a mold extrusion member 8d is connected to the tip of the piston rod of the second cylinder 8c. The mold extrusion device 8 is extended in the order of the first cylinder 8a and the second cylinder 8c to extrude the upper and lower molds 1 and 2 from the frame drawing machine 201 onto the surface plate trolley 10 outside the machine. There is.

The first acceleration sensor 11 is mounted on the back surface of the mold extrusion member 8d. The first acceleration sensor 11 is a sensor capable of measuring acceleration in three directions (see FIGS. 3 and 4) of X, Y, and Z. Further, a mold receiving member 12 for receiving the upper and lower molds 1 and 2 to be removed is arranged in the upper center of the base 9. The mold receiving member 12 can be raised and lowered by an elevating cylinder (not shown). FIG. 3 shows a state in which the upper and lower molds 1 and 2 are lowered after the frame drawing is completed.

A second acceleration sensor 13 is mounted on the back surface of the mold receiving member 12. The second acceleration sensor 13 is a sensor capable of measuring acceleration in three directions of X, Y, and Z. Reference numeral 14 is a transfer plate arranged on the base 9 for extruding the upper and lower molds 1 and 2 from the mold receiving member 12 to the surface plate carriage 10. The upper and lower molds 1 and 2 extruded to the surface plate trolley 10 are placed on the surface plate trolley 10 for one pitch (one mold) by a transport means (pusher device and cushion device) (not shown). It is transported intermittently one by one. The surface plate carriage 10 travels on the rail 15.

The operation of this example will be described with reference to the flowchart of FIG. By the first acceleration sensor 11 in this embodiment, measuring a first acceleration G ₁ in the extrusion direction (X direction) of the upper and lower molds 1 and 2 when pushing the upper and lower molds 1 and 2 from the mold stripping equipment molding machine 201. _{A threshold value G 01} is set in advance for this first acceleration, and in the present embodiment, the threshold value G ₀₁ is set to 2 G or less (G is gravitational acceleration).

The measured first acceleration G ₁ is stored in the database 701, and it is determined whether _{G 1} ≤ G _01. That is, it is determined whether the first acceleration G ₁ is 2 G or less. When the first acceleration G ₁ is 2 G or less, the result of the shape deviation determination by the mold deviation detection device 3 described above is confirmed. If the result is "not out of shape", the first acceleration G ₁ is within the threshold value and there is no out of shape, so it is judged that there is no abnormality, and the upper and lower molds 1 and 2 are poured into the upper and lower molds 1 and 2 as usual. To do.

If the result is "out of shape", the choice of pouring or not pouring is automatic or manual. If the selection is "pouring", the finished product will be inspected precisely on the inspection line 600. The inspection result of the finished product may be stored in the database 701. If the selection is "do not pour", the control means 700 is instructed to change the molding plan so as to mold one more upper and lower molds 1 and 2.

Further, in this example, the second acceleration sensor 13 measures _{the second acceleration G 2} in the extraction direction (Z direction) of the upper and lower molds 1 and 2 when the frame is removed by the frame drawing machine 201. _{A threshold value G 02} is set in advance for this second acceleration, and in the present embodiment, the threshold value G ₀₂ is set to 2 G or less.

The measured second acceleration G ₂ is stored in the database 701, and it is determined whether _{G 2} ≤ G _02. That is, it is determined whether the second acceleration G ₂ is 2 G or less. When the second acceleration G ₂ is 2G or less, the threshold value G _{01 of the first acceleration G 1 and} the threshold value G ₀₂ of the second acceleration G ₂ are reset. Specifically, a numerical value obtained by subtracting the threshold _{G 01} 0.1 the current and new threshold _{G 01.} Similarly, for the threshold value G _02, a numerical value obtained by subtracting 0.1 from the current threshold value G _{02 is set as a new threshold value G 02} .

The reason for this resetting will be explained. In this case, as can be seen from the above, the measured first acceleration G ₁ and second acceleration G ₂ are _{within the threshold values G 01} and the threshold value G ₀₂ , but are in a “misshaped” state. In such a state, it is conceivable that the setting itself of the numerical values of the _{threshold value G 01} and the threshold value G _{02 is not good.} Therefore, the current threshold value G ₀₁ and the threshold value G ₀₂ are each slightly narrowed to optimize the _{threshold value G 01} and the threshold value G _02.

Further, when the second acceleration G ₂ exceeds 2 G, there is a possibility that the upper and lower molds 1 and 2 are dropped on the mold receiving member 12 when the frame is removed by the frame drawing machine 201. Therefore, the following measures are urged. FIG. 6 is a partial schematic view for explaining the frame removal operation. In FIG. 6, a mold receiving member 12 that is raised and lowered by the first elevating cylinder 16 is arranged below the upper and lower molds 1 and 2, and a mold extrusion plate 18 that is raised and lowered by the second elevating cylinder 17 is arranged above. It is arranged. Reference numeral 19 is an upper casting frame, and reference numeral 20 is a lower casting frame.

The state in which the upper and lower molds 1 and 2 are dropped onto the mold receiving member 12 when the frame is removed means that, as shown in FIG. 6A, the upper surface of the mold receiving member 12 comes into contact with the lower surface of the lower mold 2. This is a state in which the lower surface of the extrusion plate 18 comes into contact with the upper surface of the upper mold 1 to extrude the upper and lower molds 1 and 2. If this is the case, the upper and lower molds 1 and 2 will fall by the gap between the upper surface of the mold receiving member 12 and the lower surface of the lower mold 2, and the upper and lower molds 1 and 2 will be impacted, causing a shape loss.

In order to eliminate this state, as shown in FIG. 6B, the upper surface of the mold receiving member 12 is surely in contact with the lower surface of the lower mold 2, and then the lower surface of the mold extrusion plate 18 is brought into contact with the upper surface of the upper mold 1. The operation timings of the second elevating cylinder 17 and the first elevating cylinder 16 are automatically or manually corrected so as to push out the upper and lower molds 1 and 2. That is, the frame removal operation is adjusted. Such measures are taken.

When prompting or giving treatment, the number of times is automatically or manually counted. If this procedure is repeated many times, the count number is incremented by 1 each time the procedure is performed.

In this example, the threshold value of the count number (number of times) of this treatment is set to 3. It should be noted that the set number of times of 3 is an example, and is not limited to this. The number of settings can be set to any number.

Up to 2 counts, the equipment continues to operate, i.e. continues the cycle. If the number of counts is 3 or more, review whether or not the threshold value G _{01 of the first acceleration G 1 is appropriate.} Specifically, a numerical value obtained by subtracting the threshold _{G 01} 0.1 the current and new threshold _{G 01.}

The reason will be explained. In this case, the operation timings of the second elevating cylinder 17 and the first elevating cylinder 16 have been corrected three times while the "out of shape" state continues. In such a state, it can be estimated that the cause of the shape deviation is not the side on which the second acceleration sensor 13 is mounted, but the side on which the first acceleration sensor 11 is mounted. In this case, it is possible that the setting of the threshold value G _{01 of the first acceleration G 1 is too wide in the first place.} Therefore, a measure is taken to slightly narrow the current threshold value G _01.

If the count number becomes 3 times or more, the count number is reset once here.

Then, when the first acceleration _{G 1} is to determine the threshold value _{G 01} will now be described a case where the first acceleration _{G 1} is exceeds the threshold _{G 01.} When the first acceleration G ₁ exceeds the threshold value G ₀₁ , the result of the shape deviation determination by the mold deviation detection device 3 described above is confirmed. If the result is "not out of shape", the threshold value G _{01 of the first acceleration G 1} is reset. Even if the first acceleration G ₁ exceeds the threshold value G ₀₁ , the shape is not out of shape. Therefore, the threshold value G ₀₁ is reset in the direction of slightly expanding. That is, the _{permissible range of the first acceleration G 1} is slightly expanded. Specifically, the value obtained by adding 0.1 to the current threshold value G _{01 is set as the new threshold value G 01} .

Then, the number of times the threshold value G ₀₁ is reset (corrected) is automatically or manually counted. If this resetting is repeated many times, the count number is incremented by 1 each time the resetting is performed. For example, if the threshold value G ₀₁ is sequentially expanded to 2.1 G and 2.2 G, and when it reaches 2.3 G, the shape is out of shape, the appropriate value of the _{threshold value G 01 is 2.2 G.} It can be said that it is as follows. In this case, the threshold value G ₀₁ is set to 2.2 G or less. In this way, the threshold value G ₀₁ can be optimized.

In this example, the threshold value of the number of counts (number of times) of this resetting is set to 3. It should be noted that the set number of times of 3 is an example, and is not limited to this. The number of settings can be set to any number.

Up to 2 counts, pour hot water into the upper and lower molds 1 and 2 as usual. If the number of counts is 3 or more, review whether or not the threshold value G _{02 of the second acceleration G 2 is appropriate.} Specifically, the value obtained by adding 0.1 to the current threshold value G _{02 is defined as the new threshold value G 02} .

The reason will be explained. In this case, the threshold value G ₀₁ is increased by 0.1 three times while the “not out of shape” state continues. In such a state, it is necessary to slightly widen the threshold value G _{02 of the second acceleration G 2} to balance with the _{threshold value G 01.} Therefore, a measure is taken to slightly widen the current threshold value G _02.

If the count number becomes 3 times or more, the count number is reset once here. Further, even when the count number reaches 3 times or more, hot water is poured into the upper and lower molds 1 and 2 as usual.

Further, when confirming the shape deviation determination result by the mold deviation detection device 3 described above, if the result is "shape deviation", as described above, the initial speed of the mold extrusion device 8 is slowed down. Prompt to correct the initial velocity setting. The initial velocity setting is corrected automatically or manually.

Then, whether or not to pour hot water is automatically or manually selected. If the selection is "pouring", the finished product will be inspected precisely on the inspection line 600. The inspection result of the finished product may be stored in the database 701. If the selection is "do not pour", the control means 700 is instructed to change the molding plan so as to mold one more upper and lower molds 1 and 2.

Considering based on the explanation of this example described above, for example, when the first acceleration G ₁ is within the threshold value G ₀₁ but the shape deviation determination result is "shape deviation", the shape deviation It can be estimated that the source is the side on which the second acceleration sensor 13 is mounted. That is, it can be estimated that there is a high possibility that the upper and lower molds 1 and 2 are dropped on the mold receiving member 12 when the frame is removed.

In this example, as described above, the first acceleration G in the pushing direction (X direction) of the upper and lower molds 1 and 2 when the upper and lower molds 1 and 2 are pushed out from the frame drawing machine 201 by the first acceleration sensor 11. ₁ is being measured. In addition to this, the first acceleration sensor 11 may be used to measure the acceleration of the upper and lower molds 1 and 2 in the vertical direction (Z direction).

The acceleration in the Z direction is measured in order to detect vibrations of the upper and lower molds 1 and 2 due to casting sand (adhered sand), foreign matter, etc. on the surface plate carriage 10. That is, the vibrations of the upper and lower molds 1 and 2 are detected as acceleration. A threshold value is set in advance for the acceleration in the Z direction, and the threshold value is set to 0.5 G or less in this embodiment.

The measured acceleration in the Z direction is stored in the database 701. When the measured acceleration in the Z direction exceeds the threshold value, that is, 0.5 G, it is conceivable that, for example, casting sand, foreign matter, or the like is attached to the surface plate carriage 10. In this case, for example, an inspection instruction screen for confirming and cleaning the surface plate trolley 10 is displayed on a display panel (not shown) to urge the operator to inspect. If the frame-cutting mold molding line is equipped with a surface plate trolley cleaning device, the contact condition (contact allowance) between the upper surface of the surface plate trolley 10 and the cleaning member (for example, scraper, brush, etc.) is automatically or manually corrected. ..

In this way, when the acceleration in the vertical direction of the upper and lower molds 1 and 2 is measured by the first acceleration sensor 11, it becomes possible to estimate that casting sand, foreign matter, etc. are attached to the surface plate trolley 10. There is an advantage that more advanced defect countermeasures can be realized.

In the present embodiment, various threshold values are shown, but the threshold value may be an allowable range having a predetermined range. Further, the numerical values of the various threshold values described above are only shown as an example, and are not limited to the numerical values described above. Numerical values of various threshold values can be set arbitrarily.

In the present embodiment, the step of determining the occurrence of defects includes a step of determining whether or not the unique data is outside the preset threshold value or the allowable range. More specifically, the step of determining the shape deviation of the upper and lower molds 1 and 2 includes a step of determining whether or not the distance between the horizontal coordinates of the four opposite corners of the upper mold 1 and the lower mold 2 is out of the allowable range. There is. According to this configuration, there is an advantage that the occurrence of defects can be reliably determined based on numerical data instead of abstract determination.

Further, in the present embodiment, a plurality of unique data in a plurality of devices constituting the casting facility are measured and collected for each lot and stored in the database 701. According to this configuration, there is an advantage that the traceability of the produced product can be ensured.

Further, the present embodiment includes a step of estimating the source of defects during the operation of the casting equipment. According to this configuration, not only is it possible to determine the occurrence of a defect and prompt measures related to the operation of the casting equipment in order to eliminate the occurrence of the defect, but also the defect without stopping the equipment during the operation of the casting equipment. Since it is possible to estimate the source of the above, there is an advantage that it is possible to reduce unnecessary measures against defects in the wrong place and improve productivity.

Further, in the present embodiment, the step of estimating the source of the shape deviation during the operation of the casting facility is the first step in the pushing direction of the upper and lower molds 1 and 2 when the upper and lower molds 1 and 2 are pushed out from the frame drawing machine 201. The process of measuring the acceleration G _{1 by the first acceleration sensor 11 and the second acceleration G 2} in the extraction direction of the upper and lower molds 1 and 2 when the frame is removed by the frame drawing machine 201 are measured by the second acceleration sensor 13. Includes steps and. According to this configuration, by measuring the acceleration of a place that is likely to be a source of shape loss, the state of the device or the upper and lower molds 1 and 2 at that place can be grasped, so that the true cause of the occurrence of a defect can be investigated. , There is an advantage that a closer response can be taken. The order of the step of measuring the first acceleration G ₁ by the first acceleration sensor 11 and the step of measuring the second acceleration G ₂ by the second acceleration sensor 13 is not limited to the above, and may be reversed. ..

Further, in the present embodiment _{, threshold values G 01} , G ₀₂ or an allowable range are set in advance for _{the first acceleration G 1} and the second acceleration G ₂ , and the threshold value or the allowable range is changed during the operation of the casting equipment. I am trying to (reset). According to this configuration, there is an advantage that the threshold value or the allowable range can be optimized during the operation of the casting equipment.

Further, in the present embodiment, the first acceleration sensor 11 mounted on the mold extrusion member 8d in the mold extrusion device 8 for extruding the upper and lower molds 1 and 2 to the outside of the frame removal molding machine 201, and the frame extraction in the frame removal molding machine 201. It is provided with a second acceleration sensor 13 mounted on a mold receiving member 12 that receives the upper and lower molds 1 and 2 when the mold is received. According to this configuration, it is possible to measure the acceleration of a place that is likely to be a source of shape loss, and it is possible to grasp the state of the device or the upper and lower molds 1 and 2 at that place, so that the true cause of the defect can be investigated. There is an advantage that a closer response can be taken.

In the embodiment of the present invention, a plurality of unique data in a plurality of devices constituting the casting facility are measured and collected, and stored in the database 701, but the present invention is not limited thereto. For example, at least one unique data in at least one device constituting the casting facility may be measured and stored in the database 701. Further, the occurrence of at least one defect may be determined based on the stored unique data.

Further, in the embodiment of the present invention, an example is shown in which the mold molding line 200 is a frame-cutting mold molding line, but the present invention is not limited to this. The present invention can also be applied when the molding line 200 is a molding line with a frame.

Further, in the embodiment of the present invention, in the mold misalignment detection by the mold misalignment detection device 3, the deviation between the horizontal coordinates of the four corners of the upper mold 1 and the lower mold 2 facing each other is the deviation of any one of the four corners. If it exceeds the permissible range, it is judged to be out of shape, but it is not limited to this. For example, when two, three, or all four deviations exceed the permissible range, it may be determined as a mold deviation. Alternatively, when the average value of the deviations at the four corners, the average value of the sum of squares, and the like exceed the permissible range, it may be determined that the deviation is out of shape. Alternatively, the shape deviation may be determined by using the deviation of the center position of the upper mold 1 and the lower mold 2 and the deviation of the rotation angle.

In the present invention, the operation of the casting equipment includes not only the automatic operation of the equipment in the casting equipment, but also the manual operation of the equipment by the operator, the maintenance work or the adjustment work of the equipment by the operator, and the like. .. Further, the operation method and the operation device of the casting equipment can be said to be, in other words, the management method and the management device of the casting equipment.

The main reference numerals used in the present specification and the drawings are listed below.
1 Upper mold 2 Lower mold 3 Mold deviation detection device 8 Mold extrusion device 8d Mold extrusion member 11 1st acceleration sensor 12 Mold receiving member 13 2nd acceleration sensor 200 Mold molding line 201 Unframed molding machine 700 Control means 701 Database

Claims (11)

A step of measuring at least one unique data in at least one apparatus constituting a casting facility and storing it in a database, a step of determining the occurrence of at least one defect based on the stored unique data, and a step of determining the occurrence of the defect. wherein it possesses a step of prompting the treatment according to the operation of the casting equipment, a in order to eliminate the occurrence,
A method of operating a casting facility , wherein the step of determining the occurrence of the defect includes a step of determining whether or not the unique data is out of a preset threshold value or an allowable range. The method for operating a casting facility according to claim 1 , wherein a plurality of the unique data in the plurality of devices constituting the casting facility are measured and collected for each lot and stored in the database. The method for operating a casting facility according to claim 1 , wherein the defect is a misalignment of the upper and lower molds molded and matched by a molding line forming a part of the casting facility. The method for operating a casting facility according to claim 1, further comprising a step of estimating the source of the defect during the operation of the casting facility. The method for operating a casting facility according to claim 4 , wherein the defect is a misalignment of the upper and lower molds that are molded and matched by a frame forming machine that constitutes a part of the casting facility. In the step of estimating the source of the mold misalignment during the operation of the casting facility, the first acceleration in the pushing direction of the upper and lower molds when the upper and lower molds are pushed out from the unframe molding machine is measured by the first acceleration sensor. The casting equipment according to claim 5 , further comprising a step and a step of measuring the second acceleration in the drawing direction of the upper and lower molds when the frame is pulled out by the frame drawing machine by the second acceleration sensor. How to operate. The casting equipment according to claim 6, wherein a threshold value or an allowable range is set in advance for the first acceleration and the second acceleration, and the threshold value or the allowable range is changed during the operation of the casting equipment. How to operate. The method for operating a casting facility according to claim 6, wherein the first acceleration sensor further measures the acceleration in the vertical direction of the upper and lower molds. A measuring means for measuring at least one unique data in at least one device constituting a casting facility, a database for storing the measured unique data, and at least one defect based on the stored unique data. It is provided with a control means for determining the occurrence , and
An operating device for a casting facility, wherein the defect is a misalignment of the upper and lower molds molded and matched by a molding line forming a part of the casting facility. A measuring means for measuring at least one unique data in at least one device constituting a casting facility, a database for storing the measured unique data, and at least one defect based on the stored unique data. It is provided with a control means for determining the occurrence , and
The defect is a shape deviation of the upper and lower molds molded and matched by a frame-cutting machine forming a part of the casting equipment, and is characterized by being provided with a mold deviation detection device for detecting the mold deviation. The operating device of the casting equipment. A first acceleration sensor mounted on a mold extrusion member in a mold extrusion device that extrudes the upper and lower molds to the outside of the frame drawing machine, and a mold receiver that receives the upper and lower molds when the upper and lower molds are removed in the frame drawing machine. The actuating device for a casting facility according to claim 10 , further comprising a second acceleration sensor mounted on the member.

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