JP2024035915A - Monitoring apparatus for molding apparatus, monitoring method for molding apparatus and molding apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a monitoring apparatus which can easily grasp the conditions of each part of a molding apparatus.

SOLUTION: A monitoring apparatus (50) of the present invention comprises a storage unit (53) and a display unit (57). The storage unit (53) stores shot data regarding molding of a molding apparatus, status data in plural monitoring objects (13, 36) in the molding apparatus associated with the shot data and image data obtained by acquiring the status data. The display unit (57) displays historical data including continuous plural shot data, plural status data corresponding to the respective plural shot data and the image data corresponding to any status data in the plural status data together in the same scope.

SELECTED DRAWING: Figure 10

COPYRIGHT: (C)2024,JPO&INPIT

Description

The present invention relates to a device for monitoring the operating state of a molding device such as a die-casting device or an injection molding device.

BACKGROUND ART Conventionally, in molding apparatuses such as die-casting apparatuses and injection molding apparatuses, molding conditions have been monitored for the occurrence of abnormalities in order to control and maintain the quality of obtained molded products. For example, Patent Document 1 discloses a storage unit that stores shot data related to molding conditions and abnormality data indicating that an abnormality has occurred in a die-casting machine, a history graph that includes a plurality of consecutive shot data, and a history graph that The data manipulation device includes an abnormal data mark indicating that abnormal data has occurred at a corresponding time, and a display section that displays an abnormal data mark. Molding conditions such as injection speed and casting pressure are monitored.

Japanese Patent Application Publication No. 2021-137865

However, by monitoring only molding conditions such as injection speed and casting pressure, it is difficult to grasp the status of each part of molding equipment such as a mold. The condition of each part of the molding equipment affects the quality of the molded product, but the reality is that it depends on the skill and sensitivity of the operator at production sites such as casting. This poses an issue when aiming to save labor at production sites and further strengthen traceability.

SUMMARY OF THE INVENTION Therefore, an object of the present invention is to provide a monitoring device that can easily grasp the state of each part of a molding device.

The monitoring device of the present invention includes a storage section and a display section.
The storage unit stores image data obtained by photographing each of a plurality of monitoring targets of the molding apparatus, and state data obtained from each of the image data.
The display unit displays one or more of the status data and image data corresponding to the one or more of the status data together on the same screen.

In the monitoring device of the present invention, preferably, the storage section stores image data in association with shot data related to molding performed in the molding device, and the display section stores history data including a plurality of continuous shot data and a plurality of continuous shot data. displaying together on the same screen a plurality of consecutive state data associated with each of the shot data and image data corresponding to one or more of the plurality of state data;
In the monitoring device of the present invention, preferably, the historical data and the continuous plurality of status data are each displayed in a graph format on the display unit.

The monitoring device of the present invention preferably includes a processing unit that acquires status data by performing image processing on image data.

In the monitoring device of the present invention, preferably, the storage section stores reference value data to be compared with the state data, and the processing section compares the corresponding state data and the reference value data, and stores the compared state data. Determine the degree of

In the monitoring device of the present invention, preferably, the display section displays the result of determining the state of the state data.

The monitoring device of the present invention preferably includes a plurality of cameras for acquiring image data, which are provided corresponding to each of the plurality of monitoring targets, and the monitoring device preferably includes a plurality of cameras for acquiring image data, which are provided corresponding to each of the plurality of monitoring targets, and the plurality of cameras Each camera photographs the corresponding monitoring target.

In the monitoring device of the present invention, preferably, the postures of the plurality of cameras are set so as to photograph specific photographing areas of the plurality of monitoring targets.

In the monitoring device of the present invention, preferably, the camera photographs the monitoring target in each of the plurality of molded shots, and the processing unit acquires state data for each image data of the molded shots obtained by photographing, And make a judgment.

The method for monitoring a molding device includes a first step of reading out image data obtained by photographing each of a plurality of monitoring targets of the molding device and state data acquired from each of the image data from a storage unit that stores them in association with each other;
A second step of displaying one or more of the state data and image data corresponding to the one or more of the state data together on the same screen.

The molding apparatus of the present invention includes a mold clamping section, an injection section, and a monitoring section.
The mold clamping section clamps the fixed mold and the movable mold.
The injection part injects the material to be molded into a cavity formed between the fixed mold and the movable mold.
The monitoring section monitors objects to be monitored in the mold clamping section and the injection section. The monitoring unit includes any one of the monitoring devices of the present invention.

According to the monitoring device of the present invention, status data and image data corresponding to the status data can be displayed together on the same screen. Therefore, by referring to this screen, even a person who is not an operator can easily grasp the status of each part of the molding apparatus.

1 is a side view showing a schematic configuration example of a die-casting apparatus according to an embodiment of the present invention. FIG. 2 is a diagram illustrating a configuration example of a control section in FIG. 1. FIG. FIG. 3 is a diagram showing the occurrence of casting burrs in a movable mold in chronological order. FIG. 6 is a diagram showing the occurrence of metal adhesion on the sleeve in chronological order. FIG. 2 is a flow diagram showing a procedure for setting photographing conditions. FIG. 3 is a flow diagram showing a state determination procedure. FIG. 7 is a diagram showing an input screen in a photographing condition setting procedure. It is a figure which shows the determination result in a state determination procedure. FIG. 3 is a diagram showing history data and status data in a table format. FIG. 6 is a diagram illustrating an example in which history data and status data displayed in a graph format and image data are displayed on the same screen.

Embodiments of the present invention will be described below with reference to the accompanying drawings.
〔overall structure〕
The die-casting apparatus 1 shown in FIG. It includes an injection section 30 that injects (material), and an imaging section 40 that photographs the mold clamping section 10 and the injection section 30. The die-casting apparatus 1 includes a control unit 50 that controls the operations of the mold clamping unit 10 and the injection unit 30 and determines the states of the mold clamping unit 10 and the injection unit 30 using image data obtained from the imaging unit 40. ing. The mold clamping section 10, the injection section 30, the imaging section 40, and the control section 50 will be explained below in this order.

[Mold clamping part 10: See Figure 1]
The mold clamping section 10 includes a fixed platen 12 that supports a fixed mold 11 on a support surface 15 and a movable platen 14 that supports a movable mold 13 on a support surface 16. The fixed platen 12 is fixed in position, whereas the movable platen 14 is configured to move forward and backward relative to the fixed platen 12. By moving the movable platen 14 forward and backward in the mold clamping direction x along a rail or the like (not shown), the fixed mold 11 and the movable mold 13 are opened and closed, and the fixed mold 11 and the movable mold 13 are Clamp the mold. Note that the movement of the fixed mold 11 approaching the movable mold 13 is called forward movement, and conversely, the movement of the fixed mold 11 away from the movable mold 13 is called retreat.
The mold clamping section 10 includes a toggle link mechanism 20 that generates the force necessary to clamp the fixed mold 11 and the movable mold 13. This toggle link mechanism 20 includes a toggle link 23 installed between a link housing 22 and a movable platen 14, and a plurality of tie bars 21, typically four, arranged in parallel to the mold clamping direction x. , a crosshead 24 connected to a toggle link 23, and a clamping cylinder 25 for driving the crosshead 24 provided in the link housing 22. Toggle link 23 includes a mid link 231 and a crosshead link 232. There are four tie bars 21 in this embodiment, and they pass through the four corners of the link housing 22, the movable platen 14, and the fixed platen 12 in the width direction y and height direction z, respectively.

When the crosshead 24 is pushed out toward the movable platen 14 by the clamping cylinder 25 driven by a hydraulic circuit (not shown), the movable platen 14 moves forward toward the fixed platen 12 while being guided by the tie bars 21 . At this time, the toggle link 23 (mid link 231, crosshead link 232) gradually changes from the bent state to the extended state. When the movable mold 13 comes into contact with the fixed mold 11, the tie bars 21 begin to extend, and a strain proportional to the tensile stress is generated in the tie bars 21.
The tension of the tie bars 21 is applied to the fixed mold 11 and the movable mold 13 as mold clamping force. When the toggle link 23 extends to the maximum, the tie bar 21 also extends to the maximum, and when the movable mold 13 reaches the mold clamping completion position, a specified mold clamping force is applied to the fixed mold 11 and the movable mold 13. . With the specified mold clamping force, the fixed mold 11 and the movable mold 13 can be sufficiently clamped against the pressure of the molten metal in the cavity. By repeating mold clamping and mold opening, the strain of the tie bars 21 increases and decreases within the elastic range.

[Injection part 30: see FIG. 1]
The injection unit 30 injects, for example, molten aluminum alloy into a cavity (not shown) formed between the fixed mold 11 and the movable mold 13. The injection unit 30 includes an injection cylinder 31 and a sleeve 35 that holds the molten metal supplied to the cavity.
The injection cylinder 31 includes a cylinder body 31A, a piston rod 31B partially disposed inside the cylinder body 31A, a plunger tip 31C provided at one end of the piston rod 31B, and a plunger tip 31C provided at the other end of the piston rod 31B. and a piston 31D.

Further, the sleeve 35 is a cylindrical member formed so that a pouring port 36 into which molten metal is injected by a ladle (not shown) penetrates inside and outside. The sleeve 35 is arranged such that one end passes through the fixed platen 12 and reaches the fixed mold 11, while the other end faces the injection cylinder 31. The plunger tip 31C of the injection cylinder 31 and a portion of the piston rod 31B are inserted into the sleeve 35.
When molten metal is poured into the sleeve 35 from the pouring port 36, a plunger tip 31C connected to a cylinder body 31A constituting a hydraulic circuit (not shown) is advanced. The molten metal is then injected into the cavity.

The outline of the molding cycle for obtaining a molded product using the mold clamping section 10 and the injection section 30 is as follows. The following steps are executed by operating the mold clamping section 10 and the injection section 30 according to instructions from the control section 50. The die-casting apparatus 1 normally continuously obtains molded products by repeating molding cycles.

Mold clamping process: The toggle link mechanism 20 is operated to move the movable platen 14 toward the fixed platen 12. The fixed mold 11 and the movable mold 13 are clamped by moving forward until the movable mold 13 is pressed against the fixed mold 11 with a predetermined pressure. By clamping the molds, a cavity, which is a gap similar to a molded product, is formed between the fixed mold 11 and the movable mold 13.
Injection process: After the mold clamping is completed, the plunger tip 31C of the injection cylinder 31 is advanced to inject and fill the cavity with the molten metal stored inside the sleeve 35.

Pressure holding step: When the cavity is filled with molten metal, the pressure of the molten metal in the cavity is increased to a specified pressure by introducing pressure to the head side 31E of the injection cylinder 31, and the molten metal pressure in the cavity is maintained.
Mold opening/discharging step: Once the molten metal has solidified and a molded product has been obtained, the toggle link mechanism 20 is operated to move the movable platen 14 and movable mold 13 back to a predetermined position and open the mold. After the mold is opened, the molded product is discharged from between the fixed mold 11 and the movable mold 13 by a molded product discharge mechanism (not shown).

[Imaging unit 40: see FIG. 1]
The imaging section 40 includes a plurality of cameras that photograph elements constituting the mold clamping section 10 and the injection section 30. Here, as an example, FIG. 1 shows a first camera 41 that photographs the movable mold 13 and a second camera 43 that photographs the inside of the sleeve 35 through the pouring port 36. The number of units and the installation position are arbitrary. The first camera 41 is provided at a position where it can photograph the entire movable mold 13, but its posture can be changed by a movable mechanism so that it can focus on a specific area of the movable mold 13. It is preferable to be there. The operation of the movable mechanism is performed according to instructions from a processing section 55 of the control section 50, which will be described later. The same applies to the second camera 43 and other cameras.

As the first camera 41 and the second camera 43, a camera to which a CCD (Charge Coupled Device) image sensor or a CMOS (Complementary Metal Oxide Semiconductor) image sensor is applied, particularly a network camera, is preferably used. This network camera is connected to the control unit 50 via a network device such as a router, for example, by a LAN (Local Area Network) cable. The first camera 41 and the second camera 43 photograph a predetermined area based on an instruction from the control unit 50 when the respective timings for photographing come. The photographed image data is transferred from the first camera 41 and the second camera 43 to the control unit 50.

[Control unit 50: see FIG. 2]
As described above, the control section 50 controls the casting process of the mold clamping section 10 and the injection section 30, and also determines the state of the mold clamping section 10 and the injection section 30. The control unit 50 is configured by a computer device including a CPU (Central Processing Unit), a semiconductor memory, a display, and the like.

The control section 50 includes a transmitting/receiving section 51, a storage section 53, a processing section 55, and an input/display section 57. This functional division is just an example, and the functions may be further subdivided or integrated. As an example, the input/display section 57 can be divided into a section specialized for input and a section specialized for display.
In addition to transmitting molding condition data to the mold clamping section 10 and injection section 30, the transmitting/receiving section 51 transmits photographing condition data to the imaging section 40. In addition to receiving the shot data from the mold clamping section 10 and the injection section 30, the transmitting/receiving section 51 receives image data obtained by the imaging section 40. The shot data will be described later.

The storage unit 53 stores not only molding condition data to be sent to the mold clamping unit 10 and injection unit 30 but also shooting condition data to be sent to the imaging unit 40 . Further, the storage unit 53 stores not only the shot data received by the transmitting/receiving unit 51 from the mold clamping unit 10 and the injection unit 30 but also the image data received by the transmitting/receiving unit 51 from the imaging unit 40 . Furthermore, the storage unit 53 stores state data obtained through arithmetic processing based on the image data. Although specifically described later, image data and state data are stored in association with shot data. This association is performed based on shot numbers, which will be described later. Furthermore, the storage unit 53 stores reference value data to be compared with the state data.

The processing section 55 processes the molding condition data and photographing condition data stored in the storage section 53 so that the transmitting/receiving section 51 transmits them. Furthermore, the processing unit 55 causes the storage unit 53 to store the shot data and image data received by the transmitting/receiving unit 51 in association with each other. Further, the processing unit 55 uses the image data stored in the storage unit 53 to calculate state data of a region corresponding to the image data, and stores the state data in the storage unit 53 in association with the shot data. Furthermore, the processing unit 55 objectively determines the state by comparing the state data and the reference value data, and causes the storage unit 53 to store the determination data, which is the result of the state determination, in association with the shot data. Furthermore, the processing section 55 can cause the input/display section 57 to display the shot data, image data, and state data stored in the storage section 53.
The casting process control and state determination control mainly performed by the processing section 55 will be mentioned after the input/display section 57 is explained.

The input/display unit 57 includes, for example, a liquid crystal display, and receives input of molding conditions and photographing conditions by an operator operating the die-casting apparatus 1. The molding conditions and photographing conditions input here constitute molding condition data and photographing condition data, respectively. Further, the input/display unit 57 accepts display of shot data stored in the storage unit 53. Display of shot data can be accompanied by image data, status data, and determination data associated with the shot data.

[Casting process overview]
According to the transmitted molding condition data, the power sources in the mold clamping section 10 and the injection section 30, the clamping cylinder 25, and the operation of the injection cylinder 31 are controlled. To this end, the processing section 55 obtains detection values obtained from various sensors provided in the mold clamping section 10 and the injection section 30, and compares the obtained detection values with the threshold values of the molding conditions. The operation of the power source is controlled to match. At this time, the detected value is called shot data, and includes the shot number (Shot No.), which is an identification symbol assigned to each casting shot, and the number of casting shots related to the shot number. Accompanied by Shot Time. The shot data includes various detected values corresponding to molding conditions such as biscuit thickness, metal pressure, injection speed, and mold temperature. Shot data can include not only time but also information about year, month, and day.

[Status determination overview: Figure 3, Figure 4]
The state determination is performed by the processing unit 55 based on image data transmitted from the imaging unit 40.
Image data is illustrated in FIGS. 3 and 4. FIG. 3 relates to cast burrs on the movable mold 13 as an object to be determined, and FIG. 4 relates to metal adhesion on the sleeve 35 as an object to be determined. The deposited metal is, for example, an aluminum alloy. In FIGS. 3 and 4, the rectangular areas surrounded by broken lines are the imaging areas SA1 and SA2 where image data is taken, and the set of points in the imaging area SA1 in FIG. 3 represents casting burrs. A collection of points in the imaging area SA2 in FIG. 4 represents metal adhesion. In FIGS. 3 and 4, the number of casting shots increases from the top to the bottom. In other words, no flash or metal adhesion occurs in the upper stage, but as the number of casting shots increases in the middle and lower stages, the area of flash and metal adhesion increases.

Image data SD1 and SD2 photographed by the first camera 41 and the second camera 43 for the photographing areas SA1 and SA2 are converted into grayscale tones and then binarized to generate state data. For example, the brightness of the gray scale tone is expressed in 256 levels from 0 to 255. Binarization performs colorization in which a predetermined range of tones is colored in a specific color from image data expressed in grayscale tones. Next, the area of the colored range is determined and used as state data. For example, the area for casting burrs is 21.5, and the area for metal adhesion is 8.3.

The state data, here as an example, the cast burr area A1 (=21.5) and the metal adhesion area A2 (=8.3) are compared with reference value data stored in the storage unit 53, respectively. The reference value data is, for example, SV1 (=20) for cast flash and SV2 (=10) for metal adhesion. Moreover, if the state data is within the range of reference value data or less, it is determined to be pass (G), and if the state data exceeds the reference value data, it is determined to be fail (NG). Therefore, regarding cast burrs, it is determined to be rejected (NG), and regarding metal adhesion, it is determined to be acceptable (G). The image data, state data, and determination data are stored in the storage unit 53 in association with the shot data, as described above.

[Procedure for setting shooting conditions: See Figures 5 and 7]
As a premise for determining the condition, it is necessary to input and set imaging conditions prior to casting. The operator inputs the imaging conditions into the input/display unit 57, and the processing unit 55 stores the input imaging condition data in the storage unit 53, thereby making the settings. As shown in FIG. 5, the shooting conditions are set by setting the shooting position (S101 in FIG. 5) and setting the shooting timing (S103 in FIG. 5).

The photographing range setting is performed by inputting the photographing target and the area to be photographed within the photographing target. As an example, as shown in FIG. 7, "movable mold #1" of the movable mold 13 in which there are multiple types of photographic objects is input, and especially "area SA1” is specified. For example, when there are multiple types of movable molds such as #1, #2, #3, etc., the shooting area is specified because casting burrs are likely to occur in each of the movable molds #1, #2, #3, etc. This is to identify the area.

Next, input the shooting timing. In the example of FIG. 7, "timing T1" is input, but if the object to be photographed is the movable mold 13, for example, when the mold is opened, the movable mold 13 is moved to the retract limit where it is the most retracted. This means that the photo will be taken one second later. For many monitoring targets, appropriate photographing timing will be set depending on the operations of the mold clamping section 10 and the injection section 30.

The input conditions described above are transmitted to the control section 50 and then stored in the storage section 53 according to instructions from the processing section 55. The processing unit 55 transmits an operation command to the drive mechanism of the first camera 41, for example, so that the first camera 41 can photograph the area SA1 before casting is started.

[Status determination procedure: see Figures 6 and 8]
When the imaging conditions are set and casting is started, the condition is determined according to the procedure shown in FIG.
In the state determination, first, photography is performed in each photography area at the set photography timing (S201 in FIG. 6). For example, for the movable mold 13 (#1), the photographing area SA1 is photographed by the first camera 41 at the set timing (T1), and for the sleeve 35, the photographing area SA1 is photographed by the second camera 43 at the set timing (T2). Area SA2 is photographed.
Image data obtained by photographing, for example, image data SD1 and image data SD2, are transmitted to the control unit 50 and stored in the storage unit 53 by the processing unit 55 (S203 in FIG. 6).

The processing unit 55 sequentially performs binarization and colorization using the image data stored in the storage unit 53, and then obtains state data by determining the area of the colored range (S205 in FIG. 6). The state data is, for example, the cast burr area A1 and metal adhesion area A2 described above. The status data is stored in the storage unit 53.

When the status data is acquired, the processing unit 55 performs status determination by comparing the status data and reference value data (S207 in FIG. 6). The processing unit 55 determines pass (G) when the state data is within the reference value data, and determines fail (NG) when the state data exceeds the reference value data.

The result of the state determination is displayed on the input/display unit 57 (S209 in FIG. 6).
FIG. 8 shows an example of the display. FIG. 8 is a display example of the determination results for the movable mold 13 (#1), with the upper row showing an example of passing (G) and the lower row showing an example of failing (NG). In this display example, comments are displayed in addition to the judgment result itself. The operator of the die-casting apparatus 1 can refer to this comment and perform maintenance on the relevant part. Note that although a visual display is shown here, an auditory display, that is, a sound display may also be performed.

[History display: Figure 9, Figure 10, Figure 11]
The image data and state data are stored in the storage unit 53 in association with the shot data. FIG. 9 shows an example of historical data that is a collection of shot data. As shown in FIG. 9, historical data includes shot number, shot time, injection speed (V) as detection value, and biscuit length (B). ) are associated. Further, the history data is associated with the area of cast burrs and metal adhesion as state data (State Date). Further, the history data is associated with judgment results regarding cast burrs and metal adhesion as judgment data. Historical data is
As an example, they are displayed in ascending order of Shot No. Although FIG. 9 shows only the injection speed (V) and biscuit length (B) as casting conditions, other casting conditions may be displayed. Also, other status data may be displayed as the status data and determination data.
Each piece of data shown in the same row in FIG. 9 constitutes shot data, but a set of a plurality of shot data arranged in chronological order constitutes history data.

As for the history data, for example, as shown in FIG. 10, a history graph in which various kinds of history data are displayed in chronological order is displayed on the input/display section 57. As an example, in FIG. 10, the injection speed V is displayed in a graph format (history graph) in the upper part, and the cast burr area A1 as status data is displayed in a graph format (status graph) below. In the history graph, the horizontal axis indicates time, and the vertical axis indicates injection speed and flash area, respectively. Image data SD1 about the movable mold 13 is shown on the same screen together with the injection speed V and flash area A1 in graph form. When displayed in a graph format, it is easy to recognize the tendency of fluctuations in the condition data, here the flash area A1.

The operator can display the history graph and the status graph at any time during the operation of the die-casting apparatus 1 or after completing a predetermined operation. Further, the history graph and the status graph can be displayed at a predetermined specific time without depending on an operator's instruction.
The operator can also arbitrarily select objects to be displayed on the history graph and status graph. Further, it is also possible to display a predetermined specific target on the history graph and status graph without depending on the operator's instructions.

The history bluff and state graph may also be accompanied by a display of image data, as shown in FIG. In this case, any of the shot data displayed on the history graph is specified. Image data associated with the specified shot data is displayed on the input/display unit 57 together with the history data.

[Effects produced by die-casting device 1]
According to the monitoring unit 50 of the die-casting apparatus 1, history data, status data, and image data corresponding to the status data can be displayed together on the same screen. Therefore, by referring to this screen, even a non-operator can easily grasp the state of each part of the mold clamping section 10 and the injection section 30.
Furthermore, according to the control unit 50, by making a state determination based on image data, it is possible to make a state determination equivalent to that made by an operator.
Moreover, according to the die-casting apparatus 1, the state data is obtained by photographing with a camera provided at each part and performing image processing on the obtained image data, and is stored in association with the shot data. This enables the quality control system (operation stoppage) by automatically determining management items that are directly linked to maintaining casting quality and productivity, such as mold condition, cast product appearance, and visual evaluation of casting machines, which were previously handled by operators. , alarm issuing, automatic adjustment of casting conditions, etc.) will be greatly enhanced. Traceability can also be expanded by storing and displaying image data along with detection values for each shot data.

In addition to the above preferred embodiments of the present invention, it is possible to select the configurations mentioned in the above embodiments or to change them to other configurations as appropriate, without departing from the gist of the present invention.

[About shooting condition settings]
It is not necessary to set the imaging conditions every time casting is performed. For example, when casting using the fixed mold 11 and the movable mold 13 for which photographing conditions have been set in the past, the state can be determined based on the photographing conditions stored in the storage unit 53. .
Furthermore, regarding the photographing area SA1 in the movable mold 13, an example has been shown in which the first camera 41 is operated so as to photograph a specific part of the movable mold 13, but such an operation is not necessarily necessary. do not have. When photographing the inside of the sleeve 35 through the spout 36, the photographing area SA2 can be considered to be fixed. In this way, if the photographing area is uniquely determined depending on the object to be photographed, setting of the photographing area can be omitted. Even in such a case, the camera needs to be installed at a position where it can photograph a uniquely defined photographing area.

Furthermore, an embodiment has been described in which a photographing timing is set as a photographing condition and photographing is automatically performed. However, in the present invention, for example, imaging may be performed intermittently at predetermined time intervals. If the time intervals are set according to the speed of operation of each part of the die-casting apparatus 1, it is possible to take pictures at the necessary timing without omission. It is also possible to take pictures based on instructions from the operator. In this case as well, since the operator is familiar with the operation of the die-casting apparatus 1, it is possible to take pictures at the necessary timing without omission. For example, it is also possible to perform photographing by combining automatic photographing in which photographing timing is set, photographing based on time interval settings, and photographing based on operator instructions.

[About status determination]
An embodiment has been described in which photography and determination are performed every time a casting shot is taken. However, in the present invention, the frequency of imaging and determination can be lowered compared to the embodiment. For example, if the fluctuations in the state, that is, the fluctuations in the state data, are small, the state can be appropriately grasped even if the shooting and determination are performed every few shots. It is also possible to distinguish between objects that are photographed and judged every time a casting shot is taken and objects that are photographed and judged every few shots.

An embodiment has been described in which binarization is performed as image processing to obtain state data for making a determination. However, in the present invention, image processing techniques other than binarization can be applied. For example, status data can also be obtained by comparing photographed image data and a master image.

In FIG. 10, a history bluff and a status graph are displayed as a particularly preferred form, but in the present invention, the display of the history graph can be omitted and only the status graph and image data can be displayed. This is because the state of each part of the mold clamping section 10 and the injection section 30 can be sufficiently understood just from the state graph and image data.
Although history data and status data are displayed in a graph format in FIG. 10, the display according to the present invention is not in a graph format, and the numerical values themselves on which the graph is based can also be displayed. In this case, for example, multiple historical data and multiple status data may be displayed in a table format, or only one of the multiple historical data and any one of the multiple status data may be displayed. You may display only the As an example of this, one piece of state data regarding a shot that has just been completed and image data corresponding to the state data may be displayed in association with each other.
In FIG. 10, only one image data (SD1) is shown. However, in the present invention, for example, a plurality of image data regarding cast burrs of the movable mold 13 can also be displayed in chronological order. Further, when displaying a plurality of image data, only the plurality of image data can be displayed without necessarily accompanying the display of the history bluff and the status graph.

The present invention can also compare state data using multiple levels of reference value data. For example, when a first reference value and a second reference value are provided, the state data is smaller than the first reference value, the state data is between the first reference value and the second reference value, or the state data is greater than the second reference value. Judgments are made on three levels: large.

The movable mold 13 and the sleeve 35 have been described in the embodiment as objects of state determination, that is, objects to be monitored. However, in the present invention, the state of each part of the die-casting apparatus 1 shown below can be determined. Note that the following parts include those not shown in FIG. 1, but all of them are well known to those skilled in the art.
Presence or absence of casting pins, water leakage: validity of mold maintenance, quality of castings Mold residue of castings: quality of castings, validity of mold maintenance Hot water spills from pouring spout: validity of casting conditions, casting Product quality and safety Chip lubricant discharge and adhesion: Validity of casting conditions, quality of cast products Mold seizure: Appropriateness of mold maintenance, quality of cast products Aluminum adhesion on the hot water level detection rod: Machine maintenance Adequacy, quality of castings Aluminum adhesion on ladle: Adequacy of machine maintenance, quality of castings Chill vent filling status: Adequacy of casting conditions, quality of castings

Although the above embodiment has been described using a die-casting apparatus as an example of an object to which the present invention is applied, the object to which the present invention is applicable is not limited to this. Other casting machines, such as low-pressure casting machines, are also applicable to the present invention. Furthermore, the present invention is applicable not only to casting machines but also to other molding machines such as injection molding machines and extrusion molding machines.

1 Die casting device 10 Mold clamping section 11 Fixed mold 12 Fixed platen 13 Movable mold 14 Movable platen 20 Toggle link mechanism 21 Tie bar 22 Link housing 23 Toggle link 24 Cross head 25 Mold clamping cylinder 30 Injection section 31 Injection cylinder 31A Cylinder body 31B Piston rod 31C Plunger tip 31D Piston 31E Head side 35 Sleeve 36 Pouring port 40 Imaging section 41 First camera 43 Second camera 50 Control section 51 Transmission/reception section 53 Storage section 55 Processing section 57 Input/display section 231 Mid link 232 Cross head Link A1 Cast burr area A2 Metal adhesion area SA1, SA2 Photography area SD1, SD2 Image data

Claims (11)

a storage unit that associates and stores image data obtained by photographing each of a plurality of monitoring targets of the molding device and state data acquired from each of the image data;
A monitoring device for a molding apparatus, comprising: a display unit that displays any one or more of the state data and the image data corresponding to any one or more of the state data on the same screen.
The storage unit includes:
storing the image data in association with shot data regarding molding performed in the molding device;
The display section is
History data including a plurality of continuous shot data, a plurality of continuous state data associated with each of the plurality of shot data, and one or more of the plurality of state data. The monitoring device according to claim 1, wherein the image data corresponding to the data are displayed together on the same screen.
The plurality of status data that are continuous with the historical data are each displayed in a graph format on the display unit,
The monitoring device according to claim 2.
comprising a processing unit that acquires the state data by performing image processing on the image data;
The monitoring device according to claim 2.
The storage unit stores reference value data to be compared with the state data,
The processing unit determines the degree of the state data by comparing the associated state data and the reference value data.
The monitoring device according to claim 4.
the display unit displays the result of the determination of the state of the state data;
The monitoring device according to claim 5.
comprising a plurality of cameras for acquiring the image data, which are provided corresponding to each of the plurality of monitoring targets,
each of the plurality of cameras photographs the corresponding monitoring target according to a photographing timing set according to the operation of the molding device;
The monitoring device according to claim 6.
postures of the plurality of cameras are set so as to photograph specific photographing areas in the plurality of monitoring targets;
The monitoring device according to claim 7.
The camera is
photographing the monitoring target in each of a plurality of consecutive molded shots;
The processing unit includes:
acquiring the state data for each of the image data of the molded shot obtained by photographing, and performing the determination;
The monitoring device according to claim 7.
a first step of reading image data obtained by photographing each of a plurality of monitoring targets of the molding device and state data obtained from each of the image data from a storage unit that stores the images in association with each other;
a second step of displaying any one or more of the state data and the image data corresponding to any one or more of the state data on the same screen;
A method for monitoring a molding device comprising:
a mold clamping section that clamps the fixed mold and the movable mold;
an injection part that injects a molded material toward a cavity formed between the fixed mold and the movable mold;
a monitoring unit that monitors monitoring targets in the mold clamping unit and the injection unit,
The monitoring unit is
A molding device comprising the monitoring device according to any one of claims 1 to 9.

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