Die change control system, method, apparatus, and storage medium

Abstract

This application discloses a mold-changing control system, method, device, and storage medium, belonging to the field of automation technology. Before automated mold changing, the system first resets the first and second safety light curtains using a first reset button. With the first and second safety light curtains reset, the second reset button is activated. With the first and second safety light curtains reset and the second reset button activated, the third safety light curtain is reset using a third reset button, and then automated mold changing can begin. During automated mold changing, if the light curtain signals emitted by the first, second, and third safety light curtains are interrupted, the control device stops the mold-changing equipment. Therefore, when on-site personnel enter the mold-changing area during automated mold changing, the control device can automatically stop the mold-changing equipment, thereby ensuring the safety of on-site personnel.

Description

Technical Field

[0001] This application relates to the field of automation technology, and in particular to a mold changing control system, method, device and storage medium. Background Technology

[0002] In recent years, with the development of the automotive industry, automobile manufacturers have increasingly focused on the automation level of their production lines. Among them, stamping production lines have reached a level of fully enclosed, highly automated, and continuous operation. When molds need to be changed during production, automatic mold changing is mainly used to improve production efficiency. During automatic mold changing, multiple mold-changing devices, such as the press worktable and the mold-changing trolley, work together, turning the originally fully enclosed production line into an open state. Therefore, ensuring the safety of on-site personnel during automated mold changing has become a pressing issue. Summary of the Invention

[0003] This application provides a mold-changing control system, method, device, and storage medium, which can ensure the safety of on-site personnel during automated mold-changing processes. The technical solution is as follows:

[0004] On the one hand, a mold-changing control system is provided, the system comprising: a control device, a first safety light curtain, a second safety light curtain, a third safety light curtain, a first reset button, a second reset button, and a third reset button;

[0005] The first safety light curtain, the second safety light curtain, and the third safety light curtain are all electrically connected to the control device, and the first reset button, the second reset button, and the third reset button are all electrically connected to the first safety light curtain and the second safety light curtain, and the third reset button is also electrically connected to the third safety light curtain;

[0006] The first safety light curtain, the second safety light curtain, and the third safety light curtain are respectively disposed on both sides of the stamping production line to enclose the mold changing area on both sides of the stamping production line into a closed area;

[0007] The first reset button is located within the enclosed area and is used to reset the first safety light curtain and the second safety light curtain before automated mold changing;

[0008] The second reset button is located within the enclosed area and is used to adjust to a triggerable state when the first safety light curtain and the second safety light curtain are reset;

[0009] The third reset button is located outside the enclosed area and is used to reset the third safety light curtain when the first safety light curtain and the second safety light curtain are reset and the second reset button is triggered.

[0010] The first safety light curtain, the second safety light curtain, and the third safety light curtain are used to emit light curtain signals during automated mold changing; when the light curtain signal is interrupted, an interrupt signal is sent to the control device.

[0011] The control device is used to control the mold changing device in the mold changing area to stop mold changing based on the interrupt signal.

[0012] In one possible implementation, the system further includes: a display device electrically connected to the control device; the interrupt signal carries a raster identifier;

[0013] The control device is further configured to determine a target safety grating based on the grating identifier in the interrupt signal, wherein the target safety grating is the safety grating that sent the interrupt signal; and to send a notification message to the display device based on the target safety grating.

[0014] The display device is used to display the target safety light curtain based on the notification message.

[0015] In another possible implementation, the first safety light curtain and the second safety light curtain are also used to send a status adjustment signal to the second reset button when the light curtain signal is interrupted during the automated mold changing process;

[0016] The second reset button is also used to adjust to an untriggerable state based on the state adjustment signal.

[0017] In another possible implementation, the system further includes: a first prompting device, which is electrically connected to the control device;

[0018] The control device is further configured to send a first prompt message to the first prompting device when the first safety light curtain, the second safety light curtain, and the third safety light curtain are reset, and the first reset button, the second reset button, and the third reset button are triggered;

[0019] The first prompting device is used to provide a mold change prompt based on the first prompting message.

[0020] In another possible implementation, the grating signal includes a first grating signal, and the interrupt signal includes a first interrupt signal;

[0021] The first safety light curtain includes a first transmitter and a first receiver;

[0022] The first transmitting end is used to emit the first grating signal;

[0023] The first receiving end is used to receive the first grating signal, and when the first grating signal is not received within a preset time during the automated mode changing process, it sends the first interrupt signal to the control device.

[0024] The control device is used to control the mold changing device to stop changing molds based on the first interrupt signal.

[0025] In another possible implementation, the system further includes a second prompting device electrically connected to the control device;

[0026] The control device is further configured to send a notification message to the second notification device based on the interrupt signal;

[0027] The second notification device is used to issue an alarm based on the notification message.

[0028] On the other hand, a mold-changing control method is provided, the method comprising:

[0029] Before automated mold changing, the first safety light curtain and the second safety light curtain are reset by using the first reset button;

[0030] When the first safety light curtain and the second safety light curtain are reset, the second reset button is adjusted to a triggerable state;

[0031] When the first safety light curtain and the second safety light curtain are reset and the second reset button is triggered, the third safety light curtain is reset by the third reset button;

[0032] The first safety light curtain, the second safety light curtain, and the third safety light curtain emit light curtain signals during the automated mode-changing process; when the light curtain signal is interrupted, an interrupt signal is sent to the control device.

[0033] Based on the interrupt signal, the control device controls the mold changing equipment in the mold changing area to stop changing molds.

[0034] In one possible implementation, the interrupt signal carries a grating identifier;

[0035] The method further includes:

[0036] The control device determines the target safety grating based on the grating identifier in the interrupt signal, wherein the target safety grating is the safety grating that sent the interrupt signal; and sends a notification message to the display device based on the target safety grating.

[0037] The display device displays the target safety light curtain based on the notification message.

[0038] In another possible implementation, when the grating signal is interrupted during the automated mold changing process, the first safety grating and the second safety grating send a status adjustment signal to the second reset button;

[0039] The second reset button is adjusted to an untriggerable state based on the state adjustment signal.

[0040] In another possible implementation, the method further includes:

[0041] When the first safety light curtain, the second safety light curtain, and the third safety light curtain are reset, and the first reset button, the second reset button, and the third reset button are triggered, the control device sends a first prompt message to the first prompt device.

[0042] The first prompting device provides a mold change prompt based on the first prompting message.

[0043] In another possible implementation, the grating signal includes a first grating signal, and the interrupt signal includes a first interrupt signal; the first safety grating includes a first transmitting end and a first receiving end;

[0044] When the grating signal is interrupted, the first safety grating sends an interrupt signal to the control device, including:

[0045] The first transmitting end emits the first grating signal;

[0046] The first receiving end receives the first grating signal, and when it fails to receive the first grating signal within a preset time during the automated mode changing process, it sends the first interrupt signal to the control device.

[0047] Based on the interrupt signal, the control device controls the mold-changing equipment in the mold-changing area to stop mold changing, including:

[0048] Based on the first interrupt signal, the control device controls the mold changing device to stop changing molds.

[0049] In another possible implementation, the method further includes:

[0050] The control device sends a notification message to the second notification device based on the interrupt signal;

[0051] The second notification device issues an alarm based on the notification message.

[0052] On the other hand, a control device is provided, the control device including a processor and a memory, the memory storing at least one piece of program code, the at least one piece of program code being loaded and executed by the processor to implement the mold-changing control method of any of the above control devices.

[0053] On the other hand, a computer-readable storage medium is provided, wherein at least one piece of program code is stored in the computer-readable storage medium, the at least one piece of program code being loaded and executed by a processor to implement the mode-changing control method described in any of the above control devices.

[0054] On the other hand, a computer program product is provided, wherein at least one piece of program code is stored in the computer program product, and the at least one piece of program code is loaded and executed by a processor to implement the mold-changing control method described in any of the above control devices.

[0055] This application provides a die-changing control system. The system encloses the die-changing areas on both sides of the stamping production line into a closed area using a first safety light curtain, a second safety light curtain, and a third safety light curtain. Before automated die changing, the first and second safety light curtains are reset using a first reset button. With the first and second safety light curtains reset, the second reset button is activated. With the first and second safety light curtains reset and the second reset button activated, the third safety light curtain is reset using a third reset button. Then, automated die changing can be performed using the die-changing equipment. During automated die changing, the first, second, and third safety light curtains emit light curtain signals. When the light curtain signals are interrupted, an interrupt signal is sent to the control equipment. Based on the interrupt signal, the control equipment stops the die-changing equipment. Therefore, when on-site personnel enter the die-changing area during automated die changing, the control equipment can automatically stop the die-changing equipment, thus ensuring the safety of on-site personnel.

[0056] It should be understood that the above general description and the following detailed description are merely exemplary and do not limit this disclosure. Attached Figure Description

[0057] Figure 1 This is a schematic diagram of a mold-changing control system provided in an embodiment of this application;

[0058] Figure 2 This is a timing diagram of a safety light curtain reset provided in an embodiment of this application;

[0059] Figure 3 This is a flowchart of a mold-changing control method provided in an embodiment of this application;

[0060] Figure 4This is a structural block diagram of a control device provided in an embodiment of this application.

[0061] The reference numerals in the attached figures represent:

[0062] 1-Control device, 2-First safety light curtain, 3-Second safety light curtain, 4-Third safety light curtain

[0063] 5 - First reset button, 6 - Second reset button, 7 - Third reset button, 8 - Display device

[0064] 9 - First prompting device, 10 - Second prompting device. Detailed Implementation

[0065] To make the technical solution and advantages of this application clearer, the embodiments of this application will be described in further detail below.

[0066] The terms "first," "second," "third," and "fourth," etc., used in the specification, claims, and accompanying drawings of this application are used to distinguish different objects, not to describe a specific order. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion. For example, a process, method, system, product, or apparatus that includes a series of steps or units is not limited to the listed steps or units, but may optionally include steps or units not listed, or may optionally include other steps or units inherent to these processes, methods, products, or apparatuses.

[0067] It should be noted that all information (including but not limited to user device information, user personal information, etc.), data (including but not limited to data used for analysis, stored data, displayed data, etc.), and signals involved in this application have been authorized by the user or fully authorized by all parties, and the collection, use, and processing of related data must comply with the relevant laws, regulations, and standards of the relevant countries and regions. For example, the grating signals, interrupt signals, and prompt messages involved in this application were all obtained with full authorization.

[0068] Figure 1 This is a schematic diagram of a mold-changing control system provided in an embodiment of this application. See also... Figure 1 The system includes: control device 1, first safety light curtain 2, second safety light curtain 3, third safety light curtain 4, first reset button 5, second reset button 6 and third reset button 7;

[0069] The first safety light curtain 2, the second safety light curtain 3, and the third safety light curtain 4 are all electrically connected to the control device 1, and the first reset button 5, the second reset button 6, and the third reset button 7 are all electrically connected to the first safety light curtain 2 and the second safety light curtain 3, and the third reset button 7 is also electrically connected to the third safety light curtain 4.

[0070] The first safety light curtain 2, the second safety light curtain 3 and the third safety light curtain 4 are respectively installed on both sides of the stamping production line to enclose the mold changing area on both sides of the stamping production line into a closed area.

[0071] The first reset button 5 is located within the enclosed area and is used to reset the first safety light curtain 2 and the second safety light curtain 3 before automated mold changing.

[0072] The second reset button 6 is located within the enclosed area and is used to adjust to a triggerable state when the first safety light curtain 2 and the second safety light curtain 3 are reset.

[0073] The third reset button 7 is located outside the enclosed area and is used to reset the third safety light curtain 4 when the first safety light curtain 2 and the second safety light curtain 3 are reset and the second reset button 6 is triggered.

[0074] The first safety light curtain 2, the second safety light curtain 3, and the third safety light curtain 4 are used to emit light curtain signals during the automated mold changing process; when the light curtain signal is interrupted, an interrupt signal is sent to the control device 1.

[0075] Control device 1 is used to control the mold changing equipment in the mold changing area to stop mold changing based on an interrupt signal.

[0076] The electrical connection includes at least one of a circuit connection and a wireless connection. If the electrical connection is a circuit connection, the connection method can be a cable connection. If the electrical connection is a wireless connection, the connection method can be an Ethernet connection, an infrared connection, or a WiFi (Wireless Fidelity) network connection. In the embodiments of this application, no specific limitation is made.

[0077] See Figure 1 The stamping production line has die-changing areas on both sides, which are the areas where die-changing equipment, such as the press workbench and die-changing trolley, can operate. For any side of the stamping production line, the die-changing area on that side is enclosed by a first safety light curtain 2, a second safety light curtain 3, and a third safety light curtain 4. The first reset button 5 and the second reset button 6 are both located within the enclosed area, and the third reset button 7 is located outside the enclosed area. Specifically, the first reset button 5 can be located at the end of the enclosed area, the second reset button 6 can be located in the middle of the enclosed area, and the third reset button 7 can be located outside the enclosed area, with a distance greater than a preset distance between it and the third safety light curtain 4. The preset distance can be set and changed as needed, for example, 1m or 2m, without specific limitation.

[0078] In this embodiment, the first safety light curtain 2 and the second safety light curtain 3 are reset by the same reset button, namely the first reset button 5. For one side of the mold-changing area, before automated mold changing, the operator checks for personnel in the mold-changing area starting from the tail of the stamping production line. When no personnel are present, the operator presses the first reset button 5, which resets the first safety light curtain 2 and the second safety light curtain 3. The operator can observe whether any personnel are remaining in the mold-changing area before pressing the first reset button 5.

[0079] After triggering the first reset button 5, the operator continues to walk along the production line to the location of the second reset button 6. At the location of the second reset button 6, the operator checks again whether there are personnel in the mold changing area. If there are no personnel in the mold changing area and the first safety light curtain 2 and the second safety light curtain 3 have been reset, the operator presses the second reset button 6.

[0080] After triggering the second reset button 6, the operator continues to walk along the production line to the location of the third reset button 7. At the location of the third reset button 7, the operator checks again whether there are personnel in the mold changing area. If there are no personnel in the mold changing area, and the first safety light curtain 2 and the second safety light curtain 3 are reset and the second reset button 6 is triggered, the operator presses the third reset button 7.

[0081] The other side of the mold changing area is also done in the same way. Only when the first safety light curtain 2, the second safety light curtain 3 and the third safety light curtain 4 on both sides are reset can the mold changing equipment perform automated mold changing.

[0082] In this embodiment, the second reset button 6 is to ensure that the operator has come from the location of the first reset button 5, making it easier for the operator to confirm whether there are any personnel in the mold changing area. Furthermore, the third reset button 7 is located outside the enclosed area to prevent the operator from resetting themselves into the enclosed area when resetting the safety light curtain.

[0083] When starting automated mold changing, control device 1 can provide a prompt via a prompting device. Accordingly, the system also includes a first prompting device 9 (not shown in the figure), which is electrically connected to control device 1.

[0084] The control device 1 is also used to send a first prompt message to the first prompt device 9 when the first safety light curtain 2, the second safety light curtain 3, and the third safety light curtain 4 are reset and the first reset button 5, the second reset button 6, and the third reset button 7 are triggered.

[0085] The first prompting device 9 is used to provide a mold change prompt based on the first prompting message.

[0086] In this implementation, when the three reset buttons are triggered in sequence and the three safety light curtains are reset, the control device 1 can control the first prompting device 9 to provide a mold change prompt, thereby reminding the on-site staff that a mold change is in progress in the mold change area, so as to prevent the on-site staff from entering the mold change area.

[0087] The first warning device 9 can be a strobe light or other device capable of providing light or voice prompts; there are no specific limitations on this. For example, if the first warning device 9 is a strobe light, it can flash to warn on-site personnel not to enter the mold-changing area.

[0088] During automated mold changing, the first safety light curtain 2, the second safety light curtain 3, and the third safety light curtain 4 on any side emit light curtain signals. When a light curtain signal is interrupted, an interrupt signal is sent to the control device 1. Based on the interrupt signal, the control device 1 controls the mold changing equipment within the mold changing area to stop the mold changing process. To restart the mold changing process, the safety light curtains must be reset and the reset button triggered as described above.

[0089] For any safety light curtain, the safety light curtain includes a transmitter and a receiver. The transmitter transmits the light curtain signal and the receiver receives the light curtain signal. When the receiver does not receive the light curtain signal, it indicates that personnel have entered the mold changing area. In this case, the receiver sends an interrupt signal to the control device 1, thereby the control device 1 controls the mold changing equipment to stop the mold changing, so as to ensure the safety of the on-site personnel.

[0090] The first safety light curtain 2, the second safety light curtain 3, and the third safety light curtain 4 have the same structure, and the principles of transmitting light curtain signals and interrupting signals are the same. The following explanation will only take the first safety light curtain 2 as an example.

[0091] In one possible implementation, the grating signal includes a first grating signal, and the interrupt signal includes a first interrupt signal;

[0092] The first safety light curtain 2 includes a first transmitting end and a first receiving end;

[0093] The first transmitting end is used to emit the first grating signal;

[0094] The first receiving end is used to receive the first grating signal. When the first grating signal is not received within a preset time during the automatic mode changing process, the first interrupt signal is sent to the control device 1.

[0095] Control device 1 is used to control the mold changing device to stop mold changing based on a first interrupt signal.

[0096] In this implementation, the first transmitting end can periodically or in real time emit a first grating signal. If the first receiving end receives the first grating signal, it indicates that the first grating signal has not been interrupted, meaning no personnel have entered the mode-changing area. If the first receiving end does not receive the first grating signal within a preset time period, it indicates that the first grating signal has been interrupted, meaning personnel have entered the mode-changing area. In this case, the first receiving end sends a first interrupt signal to the control device 1.

[0097] Control device 1 includes a digital input module, a digital output module, and a processor. Both the digital input module and the digital output module are connected to the processor. A first receiving end sends a first interrupt signal to the digital input module, which then transmits the first interrupt signal to the processor. Based on the first interrupt signal, the processor sends a stop command to the digital output module. The digital input module, digital output module, and processor can transmit signals or commands via a communication protocol, which can be set and changed as needed; for example, the communication protocol could be the Profisafe communication protocol. The digital output module is electrically connected to the mold-changing device. The digital output module sends a stop command to the mold-changing device, which then stops the mold-changing process based on the stop command.

[0098] During automated mold changing, when personnel enter the mold changing area, control device 1 can issue an alarm via a prompting device to alert the operator. Correspondingly, the system also includes a second prompting device 10 (not shown in the figure), which is electrically connected to control device 1.

[0099] The control device 1 is also used to send a prompt message to the second prompting device 10 based on an interrupt signal;

[0100] The second notification device 10 is used to issue an alarm based on the notification message.

[0101] In this implementation, when the control device 1 receives an interrupt signal from any safety light curtain, it sends a prompt message to the second prompt device 10, and the second prompt device 10 triggers an alarm based on the prompt message.

[0102] The second alert device 10 can be a buzzer or other audible and visual alarm device, without specific limitations. For example, the second alert device 10 can be a buzzer, which will provide an audible and visual alarm when it receives an alert message, thereby promptly reminding the operator that someone has entered the mold changing area.

[0103] In this embodiment of the application, the interrupt signal may carry a grating identifier, which is used to identify the safety grating. After receiving the interrupt signal, the control device 1 can determine the target safety grating, that is, the safety grating that sent the interrupt signal, based on the grating identifier.

[0104] For example, the first interrupt signal carries the first grating identifier. Based on the first grating identifier, the control device 1 determines that the target safety grating is the first safety grating 2, that is, personnel enter the mode-changing area from the area where the first safety grating 2 is located.

[0105] Since the first safety light curtain 2, the second safety light curtain 3 and the third safety light curtain 4 are respectively set on both sides of the stamping production line, in order to further determine which side the target safety light curtain is, the interrupt signal can also carry a position identifier. The position identifier is used to identify the position of the safety light curtain. After receiving the interrupt signal, the control device 1 can determine which side the target safety light curtain is based on the position identifier.

[0106] For example, the first interrupt signal carries a first position identifier. Based on the first position identifier, control device 1 determines that the target safety light curtain is the first safety light curtain 2 on the stamping production line, meaning that personnel have entered the mold changing area from the area where the first safety light curtain 2 is located. See [link / reference]. Figure 1 For example, if the first interrupt signal carries a second position identifier, then control device 1 determines, based on the second position identifier, that the target safety light curtain is the first safety light curtain 2 below the stamping production line, meaning that personnel have entered the mold changing area from the area where the first safety light curtain 2 is located. See [link to relevant documentation]. Figure 1 .

[0107] In this embodiment, after the control device 1 determines the target safety light curtain, it can display the target safety light curtain through the display device 8. Accordingly, the system further includes: a display device 8 (not shown in the figure), which is electrically connected to the control device 1;

[0108] After the target safety light curtain is determined, the control device 1 is also used to send a notification message to the display device 8 based on the target safety light curtain;

[0109] Display device 8 is used to display the target safety light curtain based on a notification message.

[0110] In this implementation, the display device 8 includes a display screen, which can display the target safety light curtain. This allows operators to quickly determine from which position the on-site staff entered the mold changing area.

[0111] In this embodiment of the application, the first safety light curtain 2 and the second safety light curtain 3 are also used to send a status adjustment signal to the second reset button 6 when the light curtain signal is interrupted during the automated mold changing process;

[0112] The second reset button 6 is also used to adjust to an untriggerable state based on a status adjustment signal.

[0113] In this implementation, after the first safety light curtain 2 and the second safety light curtain 3 are reset by the first reset button 5, if the light curtain signal emitted by the first safety light curtain 2 or the second safety light curtain 3 is interrupted before the second reset button 6 is triggered, the first safety light curtain 2 or the second safety light curtain 3 sends a state adjustment signal to the second reset button 6. Based on the state adjustment signal, the second reset button 6 is adjusted to an untriggerable state. In the untriggerable state, the operator cannot press the second reset button 6.

[0114] In this situation, the operator needs to press the first reset button 5 again to reset the first safety light curtain 2 and the second safety light curtain 3. Then, the first safety light curtain 2 and the second safety light curtain 3 send a status adjustment signal to the second reset button 6 again. Based on this status adjustment signal, the second reset button 6 is adjusted to the triggerable state. At this time, if the operator confirms that there is no one in the mold changing area, he / she can press the second reset button 6 and then continue to walk along the production line to the location of the third reset button 7. At the location of the third reset button 7, the operator confirms again whether there are any personnel in the mold changing area. If there are no personnel in the mold changing area, and the first safety light curtain 2 and the second safety light curtain 3 are reset and the second reset button 6 is triggered, the operator presses the third reset button 7.

[0115] See Figure 2 , Figure 2 This is a timing diagram for resetting the safety light curtain. Figure 2 As can be seen from the diagram: First, the first safety light curtain 2 and the second safety light curtain 3 are reset by the first reset button 5. After the first safety light curtain 2 and the second safety light curtain 3 are reset, the second reset button 6 is triggered. After the first safety light curtain 2 and the second safety light curtain 3 are reset and the second reset button 6 is triggered, the third reset button 7 is triggered, and the third safety light curtain 4 is reset by the third reset button 7.

[0116] The mold changing control system provided in this application can automatically trigger the mold changing equipment to stop during the automated mold changing process by using safety light curtains and adopting reasonable safety control logic, thereby ensuring the safety of on-site personnel. This eliminates concerns about safety accidents during automatic mold changing and increases the safety confidence of on-site personnel.

[0117] Furthermore, traditional methods of using physical fencing to isolate on-site workers are costly. The system provided in this application, however, significantly reduces these costs by using safety light curtains for control. Moreover, a three-segment safety light curtain can securely isolate one side of the mold-changing area, resulting in a neat and aesthetically pleasing overall production line.

[0118] Furthermore, traditional methods of using physical fencing for isolation restrict on-site personnel to access the work area only through fixed entrances, impacting overall work efficiency. However, the system provided in this application ensures that the die-changing area is in a safe state when the stamping production line is not undergoing automated die-changing. In this case, on-site personnel can enter the die-changing area from any location to perform their work, thus improving overall work efficiency.

[0119] It should be noted that the above explanation only illustrates the scenario where an operator manually triggers the reset button to reset the safety light curtain. In practical applications, the safety light curtain can also be reset automatically by triggering the reset button. Accordingly, the system also includes at least one camera, which is electrically connected to the control device 1.

[0120] In this implementation, the first reset button 5, the second reset button 6, and the third reset button 7 are all electrically connected to the control device 1, and their positions remain unchanged. The first reset button 5 and the second reset button 6 are located within the enclosed area, while the third reset button 7 is located outside the enclosed area.

[0121] When there is one camera, it can be positioned at the top center of the stamping production workshop, capturing the entire mold-changing area. Before automated mold changing, control device 1 sends a first shooting command to the camera. Based on the first shooting command, the camera captures a first image and sends it back to control device 1. Control device 1 identifies the first image to determine if any personnel are present. If no personnel are present, control device 1 triggers a first reset button 5, resetting the first safety light curtain 2 and the second safety light curtain 3. If personnel are present in the first image, a speaker alerts them to leave the mold-changing area. The system also includes a speaker, with control device 1 electrically connected to the speaker.

[0122] After resetting the first safety light curtain 2 and the second safety light curtain 3 via the first reset button 5, the control device 1 sends a second shooting command to the camera. Based on the second shooting command, the camera captures a second image and sends the second image to the control device 1. The control device 1 identifies the second image to determine whether there are any personnel in it. If there are no personnel in the second image, the control device 1 triggers the second reset button 6. If there are personnel in the second image, the control device 1 alerts the personnel to leave the mold-changing area via a speaker and sets the second reset button 6 to an inactive state. In this case, the control device 1 needs to re-trigger the first reset button 5 to reset the first safety light curtain 2 and the second safety light curtain 3.

[0123] After triggering the second reset button 6, the control device 1 sends a third shooting command to the camera. Based on the third shooting command, the camera captures a third image and sends it back to the control device 1. The control device 1 identifies the third image to determine if there are any people in it. If there are no people in the third image, the control device 1 triggers the third reset button 7. If there are people in the third image, the control device 1 alerts them to leave the mold-changing area via a speaker and sets the third reset button 7 to an inactive state. In this case, the control device 1 needs to re-trigger the first reset button 5.

[0124] When there are multiple cameras, such as three, these three cameras can be respectively positioned at the tail, middle, and head of the stamping production line to capture images of the tail, middle, and head of the mold-changing area. For easy distinction, these three cameras are designated as the first camera, the second camera, and the third camera.

[0125] Before automated mold changing, control device 1 sends a fourth shooting command to the first camera. Based on the fourth shooting command, the first camera captures a fourth image and sends it to control device 1. Control device 1 identifies the fourth image to determine if any personnel are present. If no personnel are present in the fourth image, control device 1 triggers the first reset button 5, resetting the first safety light curtain 2 and the second safety light curtain 3. If personnel are present in the fourth image, a speaker alerts them to leave the mold changing area.

[0126] After resetting the first safety light curtain 2 and the second safety light curtain 3 via the first reset button 5, the control device 1 sends a fifth shooting command to the second camera. Based on the fifth shooting command, the second camera captures a fifth image and sends the fifth image to the control device 1. The control device 1 identifies the fifth image to determine whether there are any personnel in it. If there are no personnel in the fifth image, the control device 1 triggers the second reset button 6. If there are personnel in the fifth image, the control device 1 alerts the personnel to leave the mold-changing area via a speaker and sets the second reset button 6 to an inactive state. In this case, the control device 1 needs to re-trigger the first reset button 5 to reset the first safety light curtain 2 and the second safety light curtain 3.

[0127] After triggering the second reset button 6, the control device 1 sends a sixth shooting command to the third camera. Based on the sixth shooting command, the third camera captures a sixth image and sends it back to the control device 1. The control device 1 identifies the sixth image to determine if any personnel are present. If no personnel are present in the sixth image, the control device 1 triggers the third reset button 7. If personnel are present in the sixth image, a speaker alerts the personnel to leave the mold-changing area, and the third reset button 7 is set to an inactive state. In this case, the control device 1 needs to re-trigger the first reset button 5.

[0128] It should be noted that all the contents of the embodiment where the operator resets the safety light curtain by manually triggering the reset button can also be implemented in the embodiment where the control device 1 automatically triggers the reset button to reset the safety light curtain. For example, the control device 1 can also provide prompts through the display device 8, prompting devices, etc., control the mold changing device to stop the mold changing, control the reset button to be in a triggerable or non-triggerable state, etc. The implementation process is the same and will not be described in detail here.

[0129] This application provides a mold-changing control system. The system encloses the mold-changing areas on both sides of the stamping production line into a closed area using a first safety light curtain 2, a second safety light curtain 3, and a third safety light curtain 4. Before automated mold changing, the first safety light curtain 2 and the second safety light curtain 3 are reset using a first reset button 5. With the first and second safety light curtains 2 and 3 reset, the second reset button 6 is activated. With the first and second safety light curtains 2 and 3 reset and the second reset button 6 activated, the third safety light curtain 4 is reset using a third reset button 7. Then, automated mold changing can be performed using the mold-changing equipment. During automated mold changing, the first safety light curtain 2, the second safety light curtain 3, and the third safety light curtain 4 emit light curtain signals. When the light curtain signals are interrupted, an interrupt signal is sent to the control device 1. Based on the interrupt signal, the control device 1 controls the mold-changing equipment to stop mold changing. Therefore, when on-site personnel enter the mold-changing area during automated mold changing, the control device 1 can automatically control the mold-changing equipment to stop mold changing, thereby ensuring the safety of on-site personnel.

[0130] Figure 3 This is a flowchart of a mold-changing control method provided in an embodiment of this application. See also... Figure 3 The method includes:

[0131] Step 301: Before the automated mold change, reset the first safety light curtain and the second safety light curtain by pressing the first reset button.

[0132] Step 302: With the first and second safety light curtains reset, the second reset button is adjusted to the triggerable state.

[0133] Step 303: When the first and second safety light curtains are reset and the second reset button is triggered, reset the third safety light curtain by using the third reset button.

[0134] Step 304: The first safety light curtain, the second safety light curtain, and the third safety light curtain emit light curtain signals during the automated mode change process; when the light curtain signal is interrupted, an interrupt signal is sent to the control device.

[0135] Step 305: Based on the interrupt signal, the control device controls the mold changing equipment in the mold changing area to stop mold changing.

[0136] In one possible implementation, the interrupt signal carries a grating identifier;

[0137] The method also includes:

[0138] The control device identifies the target safety grating based on the grating identifier in the interrupt signal. The target safety grating is the safety grating that sent the interrupt signal. Based on the target safety grating, a notification message is sent to the display device.

[0139] The display device shows the target safety light curtain based on the notification message.

[0140] In another possible implementation, when the grating signal is interrupted during the automated mold changing process, the first safety grating and the second safety grating send a status adjustment signal to the second reset button.

[0141] The second reset button is adjusted to an untriggerable state based on the status adjustment signal.

[0142] In another possible implementation, the method also includes:

[0143] When the first safety light curtain, the second safety light curtain, and the third safety light curtain are reset, and the first reset button, the second reset button, and the third reset button are triggered, the control device sends a first prompt message to the first prompt device.

[0144] The first prompting device provides a mold change prompt based on the first prompting message.

[0145] In another possible implementation, the grating signal includes a first grating signal, the interrupt signal includes a first interrupt signal, and the first safety grating includes a first transmitter and a first receiver.

[0146] When the grating signal is interrupted, the first safety grating sends an interrupt signal to the control device, including:

[0147] The first transmitter sends out the first grating signal;

[0148] The first receiving end receives the first grating signal. If the first grating signal is not received within a preset time during the automatic mode changing process, the first interrupt signal is sent to the control device.

[0149] The control device, based on an interrupt signal, controls the mold-changing equipment within the mold-changing area to stop mold changing, including:

[0150] Based on the first interrupt signal, the control device controls the mold changing device to stop changing molds.

[0151] In another possible implementation, the method also includes:

[0152] The control device sends a notification message to the second notification device based on the interrupt signal;

[0153] The second notification device will trigger an alarm based on the notification message.

[0154] This application provides a mold-changing control method. Before automated mold changing, the method first resets the first and second safety light curtains using a first reset button. With the first and second safety light curtains reset, the second reset button is activated. Then, with the first and second safety light curtains reset and the second reset button activated, the third safety light curtain is reset using a third reset button. Automated mold changing can then be performed using the mold-changing equipment. During automated mold changing, the first, second, and third safety light curtains emit light curtain signals. When these signals are interrupted, an interrupt signal is sent to the control equipment. Based on the interrupt signal, the control equipment stops the mold-changing equipment. Therefore, when on-site personnel enter the mold-changing area during automated mold changing, the control equipment can automatically stop the mold-changing equipment, thus ensuring the safety of the on-site personnel.

[0155] It should be noted that the mold-changing control method provided in this application embodiment is based on the above-mentioned mold-changing control system. For details of the specific process, please refer to the embodiment of the mold-changing control system, which will not be repeated here.

[0156] The structural block diagram of the control equipment can be found in [reference]. Figure 4 The control device 400 can vary significantly due to differences in configuration or performance. It may include a processor (CPU) 401 and a memory 402. The memory 402 stores at least one line of program code, which is loaded and executed by the processor 401 to implement the mode-switching control method described in the above embodiments. Of course, the control device 400 may also have wired or wireless network interfaces, a keyboard, and input / output interfaces for input and output. The control device 400 may also include other components for implementing device functions, which will not be elaborated upon here.

[0157] In an exemplary embodiment, a computer-readable storage medium is also provided, which stores at least one piece of program code that is loaded and executed by a processor to implement the mold-changing control method described in the control device in the above embodiments.

[0158] In an exemplary embodiment, a computer program product is also provided, which stores at least one piece of program code, which is loaded and executed by a processor to implement the mold-changing control method described in the control device in the above embodiments.

[0159] Those skilled in the art will understand that all or part of the steps of the above embodiments can be implemented by hardware or by a program instructing related hardware. The program can be stored in a computer-readable storage medium, such as a read-only memory, a disk, or an optical disk.

[0160] The above description is only for the purpose of enabling those skilled in the art to understand the technical solution of this application and is not intended to limit this application. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A mold-changing control system, characterized in that, The system includes: a control device (1), a first safety light curtain (2), a second safety light curtain (3), a third safety light curtain (4), a first reset button (5), a second reset button (6), and a third reset button (7); The first safety light curtain (2), the second safety light curtain (3) and the third safety light curtain (4) are all electrically connected to the control device (1), and the first reset button (5), the second reset button (6) and the third reset button (7) are all electrically connected to the first safety light curtain (2) and the second safety light curtain (3), and the third reset button (7) is also electrically connected to the third safety light curtain (4); The first safety light curtain (2), the second safety light curtain (3) and the third safety light curtain (4) are all installed on both sides of the stamping production line to enclose the mold changing area on both sides of the stamping production line into a closed area; The first reset button (5) is located within the enclosed area and is used to reset the first safety light curtain (2) and the second safety light curtain (3) before automatic mold changing. The second reset button (6) is located within the enclosed area and is used to adjust to a triggerable state when the first safety light curtain (2) and the second safety light curtain (3) are reset; The third reset button (7) is located outside the enclosed area and is used to reset the third safety light curtain (4) when the first safety light curtain (2) and the second safety light curtain (3) are reset and the second reset button (6) is triggered. The first safety light curtain (2), the second safety light curtain (3) and the third safety light curtain (4) are used to emit light curtain signals during the automated mold changing process; when the light curtain signal is interrupted, an interrupt signal is sent to the control device (1); The control device (1) is used to control the mold changing device in the mold changing area to stop mold changing based on the interrupt signal.

2. The system according to claim 1, characterized in that, The system further includes: a display device (8), which is electrically connected to the control device (1); the interrupt signal carries a grating identifier; The control device (1) is further configured to determine a target safety grating based on the grating identifier in the interrupt signal, wherein the target safety grating is the safety grating that sent the interrupt signal; and to send a notification message to the display device (8) based on the target safety grating. The display device (8) is used to display the target safety light curtain based on the notification message.

3. The system according to claim 1, characterized in that, The first safety light curtain (2) and the second safety light curtain (3) are also used to send a status adjustment signal to the second reset button (6) when the light curtain signal is interrupted during the automated mold changing process; The second reset button (6) is also used to adjust to an untriggerable state based on the state adjustment signal.

4. The system according to claim 1, characterized in that, The system further includes: a first prompting device (9), which is electrically connected to the control device (1); The control device (1) is also used to send a first prompt message to the first prompt device (9) when the first safety light curtain (2), the second safety light curtain (3), and the third safety light curtain (4) are reset, and the first reset button (5), the second reset button (6), and the third reset button (7) are triggered; The first prompting device (9) is used to provide a mold change prompt based on the first prompting message.

5. The system according to claim 1, characterized in that, The grating signal includes a first grating signal, and the interrupt signal includes a first interrupt signal; the first safety grating (2) includes a first transmitting end and a first receiving end; The first transmitting end is used to emit the first grating signal; The first receiving end is used to receive the first grating signal. When the first grating signal is not received within a preset time during the automatic mode changing process, the first interrupt signal is sent to the control device (1). The control device (1) is used to control the mold changing device to stop changing molds based on the first interrupt signal.

6. The system according to claim 1, characterized in that, The system further includes: a second prompting device (10), which is electrically connected to the control device (1); The control device (1) is also used to send a prompt message to the second prompt device (10) based on the interrupt signal; The second prompting device (10) is used to issue an alarm based on the prompting message.

7. A mold-changing control method, characterized in that, The method is applied to the mold changing control system according to any one of claims 1 to 6, and the method includes: Before automated mold changing, the first safety light curtain and the second safety light curtain are reset by using the first reset button; When the first safety light curtain and the second safety light curtain are reset, the second reset button is adjusted to a triggerable state; When the first safety light curtain and the second safety light curtain are reset and the second reset button is triggered, the third safety light curtain is reset by the third reset button; The first safety light curtain, the second safety light curtain, and the third safety light curtain emit light curtain signals during the automated mode-changing process; when the light curtain signal is interrupted, an interrupt signal is sent to the control device. Based on the interrupt signal, the control device controls the mold changing equipment in the mold changing area to stop changing molds.

8. A control device, characterized in that, The control device includes a processor and a memory, the memory storing at least one piece of program code, which is loaded and executed by the processor to implement the mold-changing control method as described in claim 7.

9. A computer-readable storage medium, characterized in that, The computer-readable storage medium stores at least one piece of program code, which is loaded and executed by a processor to implement the mold-changing control method as described in claim 7.

10. A computer program product, characterized in that, The computer program product stores at least one piece of program code, which is loaded and executed by a processor to implement the mold-changing control method as described in claim 7.

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