A stamping production line anomaly handling system, method, and device

Abstract

The present invention provides an abnormal handling system for a stamping production line, which includes a control module and production line machines. The production line machines include multiple industrial robots and multiple stamping devices. The industrial robots are used to place workpieces on the production line machines at the next station and remove workpieces from the production line machines at the previous station under the control of the control module; the stamping devices are used to stamp and process workpieces under the control of the control module; the control module is used to receive the working condition signals of the production line machines, control the faulty production line machines in a stopped operation state according to the working condition signals, control the normal production line machines in a normal operation state, and for the normal production line machines adjacent to the faulty production line machines, control the normal production line machines to maintain the state when they stop operating during interaction with the faulty production line machines. The present invention can ensure the processing efficiency when there are transient conventional faults in the production line machines, and at the same time improve the production efficiency.

Description

Technical Field

[0001] The present invention relates to the technical field of stamping production automation, and particularly to an abnormal processing system, method and device for a stamping production line. Background Art

[0002] In factories, more and more industrial robots replace humans to perform some repetitive labor. During the automation upgrade process of stamping production lines, enterprises pay more attention to cost performance, and use existing equipment and workshops in combination with industrial robots to form a fixed stamping production line, maximizing cost performance and improving equipment utilization rate.

[0003] During the production process of a stamping production line, it often occurs that a certain stamping equipment fails to process, resulting in the scrapping of processed workpieces. Generally, all processed workpieces on the stamping line need to be removed, or the entire line stops production, and production activities resume after the fault is eliminated. In response to this phenomenon, the main methods adopted in the prior art include setting up a temporary storage mechanism to temporarily store the workpieces at normal workstations before the fault node of the stamping line, or connecting the faulty node to other parallel production lines to ensure that the workstations before the fault node continue to operate normally, thus avoiding a full-line shutdown. However, both of the above two methods require additional expansion of other additional mechanisms when the stamping production line operates singly, and the utilization rate of the additional mechanisms (temporary storage mechanisms, parallel production lines, etc.) is not high, resulting in increased costs.

[0004] It can be seen that the abnormal processing methods of full-line suspension of operation or using an extended production line mechanism when a stamping production line in the prior art fails have problems of high cost and low efficiency. Summary of the Invention

[0005] In order to overcome the problems of high cost and low efficiency in the abnormal processing methods of full-line suspension of operation or using an extended production line mechanism when a stamping production line in the current prior art fails, the present invention provides an abnormal processing system, method and device for a stamping production line to make improvements.

[0006] The present invention provides a technical solution to solve the above technical problems as follows:

[0007] An abnormal processing system for a stamping production line includes a control module and production line machines. The production line machines include multiple industrial robots and multiple stamping devices. The multiple industrial robots and multiple stamping devices form the main body of the stamping production line. At least one industrial robot is arranged between two adjacent stamping devices. The control module is communicatively connected to the industrial robots and the stamping devices;

[0008] The industrial robot is used to place workpieces on the production line machines at the lower station and pick up workpieces from the production line machines at the upper station under the control of the control module;

[0009] The stamping equipment is used to stamp and process workpieces under the control of the control module;

[0010] The control module is used to receive the working condition signals of the production line machines. When any one or more of the production line machines fails, according to the working condition signals, the faulty production line machine is controlled to be in a stopped working state, the normal production line machines are controlled to be in a normal operating state, and for the normal production line machines adjacent to the faulty production line machine, the normal production line machines are controlled to maintain the state when they stop working during the interaction with the faulty production line machine.

[0011] Preferably, when the control module controls the industrial robot to place workpieces on the production line machines at the lower station, the control module is used for:

[0012] Receiving a first detection signal for determining whether there is a workpiece on the industrial robot. If there is no workpiece, the industrial robot is controlled to pick up a workpiece from the production line machine at the upper station according to the first detection signal;

[0013] Receiving a second detection signal for determining whether there is a workpiece on the industrial robot again. If there is a workpiece, the industrial robot is controlled to place the picked-up workpiece on the production line machine at the lower station according to the second detection signal.

[0014] Preferably, when the control module receives a first detection signal for determining whether there is a workpiece on the industrial robot and, if there is no workpiece, controls the industrial robot to pick up a workpiece from the production line machine at the upper station according to the first detection signal, it further includes:

[0015] Receiving a first detection signal for determining whether there is a workpiece on the industrial robot. If there is a workpiece, the industrial robot after picking up the workpiece is set to the running state, and the industrial robot is controlled to run to the workpiece placing position;

[0016] Receiving a third detection signal for determining whether there is a workpiece on the production line machine at the lower station, and judging whether there is a workpiece on the production line machine at the lower station according to the third detection signal;

[0017] If there is no workpiece, the industrial robot after picking up the workpiece is set to the workpiece placing allowed state, and the industrial robot is controlled to place the picked-up workpiece on the production line machine at the lower station;

[0018] If there is a workpiece, the industrial robot after picking up the workpiece is set to the waiting state. <>

[0019] Preferably, when the control module receives a first detection signal for determining whether there is a workpiece on the industrial robot, and if there is no workpiece, the control module controls the industrial robot to grasp a workpiece from the production line machine at the upper station according to the first detection signal, it further includes:

[0020] Receiving a fourth detection signal for determining whether there is a workpiece on the production line machine at the upper station and whether it is allowed to be grasped. If it is allowed to pick up the workpiece, the control module controls the industrial robot to grasp the workpiece from the production line machine at the upper station according to the fourth detection signal; if the grasping fails, the industrial robot and the production line machine at the upper station are set to an abnormal state.

[0021] Preferably, if the faulty production line machine is a faulty stamping device, the control module is used to receive the working condition signal of the production line machine. When any one or more of the production line machines fail, the faulty production line machine that has failed is controlled to be in a stop operation state according to the working condition signal, and it further includes:

[0022] Receiving a fifth detection signal for determining whether the workpiece on the faulty stamping device can continue to be used;

[0023] If the workpiece can continue to be used, the control module controls the faulty stamping device to restart according to the fifth detection signal, and resets the faulty stamping device to an allowed pick-up state;

[0024] If the workpiece cannot continue to be used, after cleaning the waste workpiece on the faulty stamping device, the control module controls the faulty stamping device to restart according to the fifth detection signal, and resets the faulty stamping device to an allowed placing state.

[0025] Preferably, if the workpiece can continue to be used, the control module further includes:

[0026] Setting the industrial robot at the lower station of the faulty stamping device to an allowed pick-up state, and controlling the industrial robot at the lower station to pick up the workpiece from the faulty stamping device.

[0027] Preferably, if the workpiece cannot continue to be used, after cleaning the waste workpiece on the faulty stamping device, the control module further includes:

[0028] Setting the industrial robot at the upper station of the faulty stamping device to an allowed placing state, and controlling the industrial robot at the upper station to place the grasped workpiece onto the faulty stamping device.

[0029] Preferably, the control module communicates with the industrial robot and the stamping device by means of PLC communication.

[0030] The present invention also provides a method for handling abnormalities in a stamping production line, including:

[0031] Receiving the working condition signals of the production line machines;

[0032] When any one or more of the production line machines break down, controlling the faulty production line machines that have broken down to a stop working state according to the working condition signals;

[0033] Controlling the normal production line machines to a normal operating state, and for the normal production line machines adjacent to the faulty production line machines, controlling the normal production line machines to maintain the state when they stopped working during the interaction with the faulty production line machines.

[0034] The present invention also provides a device for handling abnormalities in a stamping production line, including:

[0035] A signal receiving unit, configured to receive the working condition signals of the production line machines;

[0036] A first control unit, configured to, when any one or more of the production line machines break down, control the faulty production line machines that have broken down to a stop working state according to the working condition signals;

[0037] A second control unit, configured to control the normal production line machines to a normal operating state, and for the normal production line machines adjacent to the faulty production line machines, control the normal production line machines to maintain the state when they stopped working during the interaction with the faulty production line machines.

[0038] A system for handling abnormalities in a stamping production line provided by the present invention includes a control module and production line machines. The production line machines include multiple industrial robots and multiple stamping devices. The multiple industrial robots and multiple stamping devices form the main body of the stamping production line. At least one industrial robot is arranged between two adjacent stamping devices. The control module is communicatively connected to the industrial robots and the stamping devices; the industrial robots are configured to place workpieces on the production line machines at the next station and pick up workpieces from the production line machines at the previous station under the control of the control module; the stamping devices are configured to stamp and process workpieces under the control of the control module; the control module is configured to receive the working condition signals of the production line machines, when any one or more production line machines break down, control the faulty production line machines that have broken down to a stop working state according to the working condition signals, control the normal production line machines to a normal operating state, and for the normal production line machines adjacent to the faulty production line machines, control the normal production line machines to maintain the state when they stopped working during the interaction with the faulty production line machines, control the normal production line machines to continue working when abnormalities occur in the stamping production line, separate the normal devices from the faulty devices, ensure the processing efficiency when there are temporary conventional faults and abnormalities in the devices, and improve the production efficiency at the same time. Description of the Drawings

[0039] Figure 1 Schematic diagram of the component modules of the stamping production line abnormality handling system provided in the first embodiment of the present invention;

[0040] Figure 2 Flowchart of the operation of the stamping production line abnormality handling system provided in the first embodiment of the present invention;

[0041] Figure 3 Schematic diagram of the process of the stamping production line abnormality handling method provided in the second embodiment of the present invention;

[0042] Figure 4 Block diagram of the structure of the stamping production line abnormality handling device provided in the third embodiment of the present invention.

[0043] Explanation of the reference numerals:

[0044] 1. Control module; 2. Production line machines; 21. Industrial robots; 211. First industrial robot; 212. Second industrial robot; 213. Third industrial robot; 22. Stamping equipment; 221. First stamping equipment; 222. Second stamping equipment; 223. Third stamping equipment; 3. Loading unit; 4. Loading unit; 5. Loading belt; 6. Unloading belt; 401. Signal receiving unit; 402. First control unit; 403. Second control unit. Detailed implementation manners

[0045] In order to make the objectives, technical solutions and advantages of the present invention clearer and more understandable, the present invention will be further described in detail below with reference to the accompanying drawings and implementation examples. It should be understood that the specific implementation examples described herein are only used to explain the present invention and are not used to limit the present invention.

[0046] Embodiment 1

[0047] As Figure 1 shown in, it is a schematic diagram of the component modules of a stamping production line abnormality handling system provided in the embodiments of the present invention. The stamping production line abnormality handling system in this embodiment includes:

[0048] A control module 1 and production line machines 2. The production line machines 2 include multiple industrial robots 21 and multiple stamping equipments 22. The multiple industrial robots 21 and the multiple stamping equipments 22 form the main body of the stamping production line. At least one industrial robot 21 is arranged between two adjacent stamping equipments 22. The control module 1 is communicatively connected to the industrial robots 21 and the stamping equipments 22;

[0049] The industrial robot 21 is used to place the workpiece on the production line machine 2 at the lower station and pick up the workpiece from the production line machine 2 at the upper station under the control of the control module 1;

[0050] The stamping equipment 22 is used to stamp and process the workpiece under the control of the control module 1;

[0051] The control module 1 is used to receive the working condition signal of the production line machine 2. When any one or more of the production line machines 2 fails, according to the working condition signal, the faulty production line machine 2 with the fault is controlled to be in a stopped operation state, and the normal production line machines 2 are controlled to be in a normal operation state. And for the normal production line machines 2 adjacent to the faulty production line machine 2, the normal production line machines 2 are controlled to maintain the state when they stop operating during the interaction with the faulty production line machine 2.

[0052] It can be understood that as Figure 1 shown, in the system of this embodiment, other devices may also be included in addition to the industrial robot, stamping equipment and control module. The system provided in this embodiment includes, for example, a feeding unit 3, a stretching unit 4, a feeding belt 5, and a discharging belt 6 at the end of the production line, etc. Among them, the feeding unit 3 can use an industrial robot to place the material to be stamped and processed on the stretching unit 4. The stretching unit 4 can also use a general stamping equipment to stretch the material. The feeding belt 5 is responsible for transporting the stretched material to the main body of the stamping production line where stamping processing is about to be carried out. The feeding belt 5 can be an ordinary transport belt, which will not be further described here. Those skilled in the art can simply set the above-mentioned conventional devices such as the feeding unit 3, stretching unit 4, feeding belt 5, discharging belt 6 according to actual needs. These types of devices do not belong to the devices that must be set in the present invention and are only described as examples here. In addition, for the industrial robot 21 and the stamping equipment 22, mature devices in the prior art can be used, which will not be further described here.

[0053] Furthermore, in this embodiment, as Figure 1 shown, the embodiment given only takes the example that one industrial robot is arranged between two adjacent stamping equipments. In other embodiments, for workstations at a relatively long distance or situations where the workpiece needs to be flipped, etc., two or more industrial robots can be arranged between two adjacent stamping equipments according to actual needs. The industrial robot can directly grab the workpiece from the stamping equipment at the previous station or place the workpiece on the stamping equipment at the next station, or grab the workpiece from the industrial robot at the previous station or place the workpiece on the industrial robot at the next station. More simple situations will not be further described here.

[0054] In addition, the control module 1 in this embodiment can be a control center, which can be installed and set in the form of a control cabinet, a control box, etc. The way to achieve control can be common ways such as PLC communication control and single-chip microcomputer control. In this embodiment, PLC communication is preferably adopted, that is, the way of communication between the control module and the industrial robot and the stamping equipment is PLC communication. PLC (Programmable Logic Controller) is a digital operation controller with a microprocessor for automatic control. It can load control instructions into memory for storage and execution at any time. It stores and executes operation instructions such as logical operations, sequential control, timing, counting, and arithmetic operations inside. It controls various types of mechanical equipment or production processes through digital or analog inputs and outputs. Specific more conventional technical content will not be further elaborated here. Those skilled in the art can understand and implement it according to actual needs in combination with the existing technology.

[0055] Such as Figure 1As shown in [description], in this embodiment, the industrial robot 21 includes a first industrial robot 211, a second industrial robot 212, a third industrial robot 213... an Nth industrial robot, and the stamping equipment includes a first stamping equipment 221, a second stamping equipment 222, a third stamping equipment 223...The Nth stamping equipment, etc. During normal operation, the feeding unit 3 feeds the workpiece to the stretching unit 4 for stretching and forming. After the stretching unit 4 finishes stretching, the workpiece is conveyed by the feeding belt 5 of the feeding unit 3. After the workpiece is transported by the feeding belt 5 and arrives at the designated position, the control module sends a signal allowing the first industrial robot 211 to pick up the workpiece. At this time, the first industrial robot 211 is in the state of allowing workpiece picking. The first industrial robot 211 goes to the feeding belt 5 to pick up the workpiece. When the first industrial robot 211 successfully picks up the workpiece, it can use the sensor set on it to judge whether there is a workpiece and feedback to the control module 1. When it senses that there is a workpiece, its state changes to the running state. At this time, the first stamping equipment 221 is in the state of allowing workpiece placement. The state of the first industrial robot 211 changes from the running state to the state of allowing workpiece placement. After the first industrial robot 211 successfully places the workpiece, it judges that it has no workpiece by itself and feedbacks to the control module 1, and its state changes from allowing workpiece placement to the waiting state, waiting to pick up the next workpiece. After the first stamping equipment 221 judges that there is a workpiece by itself, its state changes from the allowing workpiece placement state to the running state to perform stamping operations. When the first stamping equipment 221 finishes processing, its state changes from the running state to the allowing workpiece picking state, and the state of the second industrial robot 212 changes to the allowing workpiece picking state to pick up the workpiece in the first stamping equipment 221. When the second industrial robot 212 successfully picks up the workpiece, it judges that it has a workpiece by itself and feedbacks to the control module 1. The first stamping equipment 221 judges that it has no workpiece by itself and feedbacks to the control module 1. The state of the second industrial robot 212 changes from the allowing workpiece picking state to the running state. The state of the first stamping equipment 221 changes from the allowing workpiece picking state to the allowing workpiece placement state. The first industrial robot 211 continues to execute the workpiece picking and placing process in a loop. When the state of the second stamping equipment 222 is allowing workpiece placement, the state of the second industrial robot 212 changes from the running state to the allowing workpiece placement state. After the second industrial robot 212 successfully places the workpiece, it judges that it has no workpiece by itself and feedbacks to the control module 1, and its state changes from allowing workpiece placement to the waiting state. The second stamping equipment 222 judges that there is a workpiece by itself and feedbacks to the control module 1, and its state changes from the allowing workpiece placement state to the running state to perform stamping operations. When the second stamping equipment 222 finishes processing, its state changes from the running state to the allowing workpiece picking state. Therefore, the state of the third industrial robot 213 changes to the allowing workpiece picking state to pick up the workpiece in the second stamping equipment 222. When the third industrial robot 213 successfully picks up the workpiece, it judges that it has a workpiece by itself and feedbacks to the control module 1. The second stamping equipment 222 judges that it has no workpiece by itself and feedbacks to the control module 1. The state of the third industrial robot 213 changes from the allowing workpiece picking state to the running state, and moves the workpiece to the next stamping equipment for processing. In this way, the whole process of feeding and discharging of the first stamping equipment 221 and the second stamping equipment 222 is completed. The feeding and discharging processes of the remaining other industrial robots and stamping equipment are the same in principle until the overall processing is completed.

[0056] When a failure occurs, the control module 1 controls the faulty production line machine in a stopped operation state according to the working condition signal, and controls the normal production line machine in a normal operation state. The working condition signal can be a conventional working condition signal such as a normal working signal or a fault abnormal signal, and is specifically combined with Figure 1 , for example, if the second stamping device 222 mentioned above has a material jamming abnormality and the third industrial robot 213 fails to pick up parts, then the control module 1 will control the faulty production line machines, namely the second stamping device 222 and the third industrial robot 213, in a stopped operation state. Specifically, it can be to convert the allowable part-picking state to an abnormal state, and the rest of the stamping production line works normally. For example, the first industrial robot 211, the second industrial robot 212, the first stamping device 221, and other production line machines behind the third industrial robot 213 can all operate normally.

[0057] Furthermore, for the normal production line machines adjacent to the faulty production line machines, control the normal production line machines to maintain the state when they stop operating during interaction with the faulty production line machines. Specifically combined with Figure 1 , that is, after the third stamping device 223 normally processes the workpiece, the state changes from running to the allowable part-picking state. After the subsequent industrial robot successfully picks up the part, the state of the third stamping device 223 changes from the allowable part-picking state to the allowable part-placement state. However, since the third industrial robot 213 is in an abnormal state, the third stamping device 223 is in a state where it needs to interact with the faulty production line machine at this time. At this time, it only needs to keep the third stamping device 223 in the allowable part-placement state.

[0058] In this embodiment, when the control module 1 controls the industrial robot 21 to place the workpiece on the production line machine 2 at the next station, the control module 1 includes for:

[0059] Receiving a first detection signal for determining whether there is material on the industrial robot 21. If there is no material, then control the industrial robot 21 to grab the workpiece from the production line machine 2 at the upper station according to the first detection signal;

[0060] Receiving a second detection signal for determining whether there is material on the industrial robot 21 again. If there is material, then control the industrial robot 21 to place the grabbed workpiece on the production line machine 2 at the next station according to the second detection signal.

[0061] Specifically, for example, based on Figure 1Before the first industrial robot 211 needs to grasp the workpiece on the loading belt 5, it is necessary to determine whether there is already a workpiece on the first industrial robot 211. If there is a workpiece, it is certainly not possible to grasp the material again. At this time, it is necessary to judge whether there is a workpiece. Generally, conventional components such as sensors can be set on the industrial robot to sense whether a workpiece is grasped. The sensing signal of the sensor is the corresponding first detection signal. When it is detected that there is no workpiece on the first industrial robot 211, the control module can control the first industrial robot 211 to grasp the workpiece.

[0062] Similarly, after the first industrial robot 211 grasps the workpiece, it is necessary to judge whether the grasping is in place. The control module needs to receive the second detection signal detected by the sensor on the first industrial robot 211 again. If the workpiece is sensed, it can be judged that the grasping is successful, and the control module 1 controls the first industrial robot 211 to place the workpiece according to the second detection signal.

[0063] In this embodiment, the control module 1 receives the first detection signal for determining whether there is material on the industrial robot 21. If there is no material, it controls the industrial robot 21 to grasp the workpiece from the production line machine 2 at the upper station according to the first detection signal, and further includes:

[0064] Receiving the first detection signal for determining whether there is material on the industrial robot 21. If there is material, the industrial robot 21 after grasping the workpiece is set to the running state, and the industrial robot 21 is controlled to run to the placing position;

[0065] Receiving the third detection signal for determining whether there is material on the production line machine 2 at the lower station, and judging whether there is material on the production line machine 2 at the lower station according to the third detection signal;

[0066] If there is no material, the industrial robot 21 after grasping the workpiece is set to the allowable placing state, and the industrial robot 21 is controlled to place the grasped workpiece on the production line machine 2 at the lower station;

[0067] If there is material, the industrial robot 21 after grasping the workpiece is set to the waiting state.

[0068] It can be understood that in this embodiment, the working states of the industrial robot include the running state, the allowing placing state, the allowing picking state, the waiting state, and the abnormal state. The above control process mainly controls the industrial robot in the corresponding state according to the real-time state of the stamping production line. The allowing placing state and the allowing picking state are the permission states for placing and picking. The running state is to keep operating, such as moving workpieces, rotating workpieces, etc., which are specifically set according to actual needs. The waiting state is the state when waiting for the equipment at the previous station or the next station to allow the execution of the next step. The abnormal state is the state when a failure occurs, and only a simple description is given here. For example, the aforementioned first industrial robot 211 needs to judge whether there is a workpiece on itself and feedback the first detection signal of the judgment to the control module 1. When there is a workpiece, the control module 1 controls the first industrial robot 211 to place the workpiece on the first stamping device 221. Before placing, it will receive the third detection signal indicating whether there is material (i.e., whether there is a workpiece) on the first stamping device 221 at the lower station. If there is material (there is a workpiece), it will control the first industrial robot 211 to pause the action of placing the workpiece on the first stamping device 221. After the workpiece on the first stamping device 221 is taken away and the sensor on the stamping device cannot sense the workpiece, it will send a third detection signal of no material to the control module 1. The control module 1 then controls the first industrial robot 211 to be in the allowing placing state and controls the first industrial robot 211 to place the workpiece on the first stamping device 221.

[0069] In this embodiment, the control module 1 receives the first detection signal for determining whether there is material on the industrial robot 21. If there is no material, when controlling the industrial robot 21 to grab a workpiece from the production line machine 2 at the upper station according to the first detection signal, it further includes:

[0070] Receiving the fourth detection signal for determining whether there is material and allowing grabbing on the production line machine 2 at the upper station. If picking is allowed, controlling the industrial robot 21 to grab a workpiece from the production line machine 2 at the upper station according to the fourth detection signal; if the grabbing fails, setting the industrial robot 21 and the production line machine 2 at the upper station to the abnormal state.

[0071] It can be understood that in order to ensure that the production line machines 2 corresponding to the upper and lower stations are all in a state where they can interact, it is also necessary to perform state identification and detection on the corresponding equipment at the upper station, so as to determine that the production line machine 2 at the upper station is in a state where it can interact and then perform the interaction. The principle is similar to the judgment of the presence or absence of materials on the aforementioned first stamping device 221, and no further description will be given here.

[0072] In this embodiment, if the faulty production line machine 2 is a faulty stamping device, the control module 1 is configured to receive the working condition signal of the production line machine 2, and when any one or more of the production line machines 2 fails, control the faulty production line machine 2 with a fault in a stopped operation state according to the working condition signal. It further includes:

[0073] Receiving a fifth detection signal for determining whether the workpiece on the faulty stamping device can continue to be used;

[0074] If the workpiece can continue to be used, restart the faulty stamping device according to the fifth detection signal, and reset the faulty stamping device to an allowable pick-up state;

[0075] If the workpiece cannot continue to be used, after cleaning the waste workpiece on the faulty stamping device, restart the faulty stamping device according to the fifth detection signal, and reset the faulty stamping device to an allowable placing state.

[0076] In this embodiment, if the workpiece can continue to be used, the control module 1 further includes:

[0077] Setting the industrial robot 21 at the lower station of the faulty stamping device to an allowable pick-up state, and controlling the industrial robot 21 at the lower station to pick up the workpiece from the faulty stamping device.

[0078] In this embodiment, if the workpiece cannot continue to be used, after cleaning the waste workpiece on the faulty stamping device, the control module 1 further includes:

[0079] Setting the industrial robot 21 at the upper station of the faulty stamping device to an allowable placing state, and controlling the industrial robot 21 at the upper station to place the grabbed workpiece onto the faulty stamping device.

[0080] It can be understood that in this embodiment, the fifth detection signal can be manually triggered. For example, by manually arriving at the faulty device to check whether the workpiece can continue to be used first, and then selecting to input the corresponding fifth detection signal at the control cabinet or the control center, so that the control module can make a judgment based on the fifth detection signal and execute the next step.

[0081] Specifically, corresponding to the above situation where the second stamping device 222 fails and the third industrial robot 213 is also in a failure state of failed workpiece picking. If the workpiece can still be used, click on the industrial control screen of the control module to change the status of the second stamping device 222 from abnormal to allowing workpiece picking, reset the third industrial robot 213, change the status of the third industrial robot 213 from abnormal to allowing workpiece picking, and let the third industrial robot 213 pick up the workpiece on the second stamping device 222 and continue operating. At this time, the workpiece will not be discarded, reducing the waste reimbursement rate of the workpiece. If the workpiece cannot be used anymore, after manually removing the workpiece, click on the industrial control screen of the control module to reset the second stamping device 222, change the status of the second stamping device 222 from abnormal to allowing workpiece placement, and at the same time set the second industrial robot 212 at the previous station to the allowing workpiece placement state. Control the second industrial robot 212 at the previous station to place the grabbed workpiece on the second stamping device 222. At the same time, reset the third industrial robot 213 and change its status to the waiting state, waiting to pick up the workpiece after the second stamping device 222 finishes processing the new workpiece. This can quickly resume the normal operation of the production line.

[0082] As Figure 2 shown, it is the working flowchart of the stamping production line abnormal handling system provided in this embodiment. It is mainly described by taking the example of the second stamping device 222 having a material jamming abnormal failure in the above embodiment. When the stamping production line abnormal handling system is applied, if a stamping device has a material jamming abnormality and the industrial robot at the corresponding lower station fails to pick up the material, the control module will put the corresponding stamping device and the industrial robot in a stopped operation state (abnormal state), and other normal production line machines will continue to operate normally. Then, manually judge whether the workpiece can still be used. If it can still be used, place the workpiece back on the stamping device, and click on the industrial control screen of the control module to change the status of the faulty stamping device from abnormal to allowing workpiece picking, reset the industrial robot that failed to pick up the material to change its status from abnormal to allowing workpiece picking, and then continue to start and operate normally. If the workpiece cannot be used anymore, after manually removing the workpiece, click on the industrial control screen of the control module to reset the faulty stamping device, change the status of the faulty stamping device from abnormal to allowing workpiece placement, and at the same time set the industrial robot at the previous station to the allowing workpiece placement state. Control the industrial robot at the previous station to place the grabbed workpiece on the faulty stamping device. At the same time, reset the industrial robot that failed to pick up the material and change its status to the waiting state, waiting to pick up the workpiece after the faulty stamping device finishes processing the new workpiece. This can quickly resume the normal operation of the production line.

[0083] An abnormal handling system for a stamping production line provided by the present invention includes a control module and production line machines. The production line machines include multiple industrial robots and multiple stamping devices. The multiple industrial robots and multiple stamping devices form the main body of the stamping production line. At least one industrial robot is arranged between two adjacent stamping devices. The control module is communicatively connected to the industrial robots and the stamping devices. The industrial robot is used to place the workpiece on the production line machine at the next station and pick up the workpiece from the production line machine at the previous station under the control of the control module. The stamping device is used to stamp and process the workpiece under the control of the control module. The control module is used to receive the working condition signals of the production line machines. When any one or more production line machines fail, according to the working condition signals, the faulty production line machines that have failed are controlled to stop operating, and the normal production line machines are controlled to operate normally. And for the normal production line machines adjacent to the faulty production line machines, the normal production line machines are controlled to maintain the state when they stop operating during the interaction with the faulty production line machines. When an abnormality occurs in the stamping production line, the normal production line machines are controlled to continue operating, separating the normal equipment and the faulty equipment, ensuring the processing efficiency during transient conventional faults and abnormalities of the equipment, and improving the production efficiency at the same time.

[0084] Embodiment 2

[0085] As Figure 3 shown, in one embodiment, an abnormal handling method for a stamping production line is proposed. This embodiment mainly takes the application of this method to the control module in the aforementioned Embodiment 1 as an example. An abnormal handling method for a stamping production line includes:

[0086] Step S301, receiving the working condition signals of the production line machines;

[0087] Step S302, when any one or more of the production line machines fail, according to the working condition signals, controlling the faulty production line machines that have failed to stop operating;

[0088] Step S303, controlling the normal production line machines to operate normally, and for the normal production line machines adjacent to the faulty production line machines, controlling the normal production line machines to maintain the state when they stop operating during the interaction with the faulty production line machines.

[0089] Further, if the faulty production line machine is a faulty stamping device, then step S302 further includes:

[0090] Receiving a fifth detection signal for determining whether the workpiece on the faulty stamping device can continue to be used;

[0091] If the workpiece can continue to be used, then according to the fifth detection signal, controlling the faulty stamping device to restart and resetting the faulty stamping device to the state allowing workpiece picking;

[0092] If the workpiece cannot be used continuously, after cleaning the waste workpiece on the faulty stamping equipment, the faulty stamping equipment is controlled to restart according to the fifth detection signal, and the faulty stamping equipment is reset to the state allowing workpiece placement.

[0093] Further, if the workpiece can be used continuously, the steps of controlling the faulty stamping equipment to restart according to the fifth detection signal and resetting the faulty stamping equipment to the state allowing workpiece picking also include:

[0094] The industrial robot at the lower station of the faulty stamping equipment is set to the state allowing workpiece picking, and the industrial robot at the lower station is controlled to pick up the workpiece from the faulty stamping equipment.

[0095] Further, if the workpiece cannot be used continuously, after cleaning the waste workpiece on the faulty stamping equipment, the steps of controlling the faulty stamping equipment to restart according to the fifth detection signal and resetting the faulty stamping equipment to the state allowing workpiece placement also include:

[0096] The industrial robot at the upper station of the faulty stamping equipment is set to the state allowing workpiece placement, and the industrial robot at the upper station is controlled to place the grabbed workpiece on the faulty stamping equipment.

[0097] It can be understood that the abnormal handling method of the stamping production line in this embodiment is applied to the control module in the foregoing Embodiment 1. For the same control content steps, the control process of the control module in Embodiment 1 can be referred to for understanding, and no further description will be given here.

[0098] Embodiment 3

[0099] As Figure 4 shown, in one embodiment, an abnormal handling device for a stamping production line is proposed. This embodiment mainly takes the device for executing the abnormal handling method of the stamping production line in the foregoing Embodiment 2 as an example. An abnormal handling device for a stamping production line includes:

[0100] A signal receiving unit 401, configured to receive the working condition signals of the production line machines;

[0101] A first control unit 402, configured to control the faulty production line machine in a stop operation state according to the working condition signals when any one or more of the production line machines break down;

[0102] A second control unit 403, configured to control the normal production line machines in a normal operation state, and for the normal production line machines adjacent to the faulty production line machine, control the normal production line machines to maintain the state when stopping operation during interaction with the faulty production line machine.

[0103] Further, in this embodiment, taking the faulty production line machine as the faulty stamping equipment as an example, the first control unit 402 further includes:

[0104] A first receiving subunit, configured to receive a fifth detection signal for determining whether the workpiece on the faulty stamping equipment can continue to be used;

[0105] A second control subunit, configured to, when the workpiece can continue to be used, control the faulty stamping equipment to restart according to the fifth detection signal, and reset the faulty stamping equipment to an allowable workpiece picking state; when the workpiece cannot continue to be used, after cleaning the discarded workpiece on the faulty stamping equipment, control the faulty stamping equipment to restart according to the fifth detection signal, and reset the faulty stamping equipment to an allowable workpiece placing state.

[0106] Further, the second control subunit is further configured to, when the workpiece can continue to be used, set the industrial robot at the next station of the faulty stamping equipment to an allowable workpiece picking state, and control the industrial robot at the next station to pick the workpiece from the faulty stamping equipment.

[0107] Further, the second control subunit is further configured to, when the workpiece cannot continue to be used, after cleaning the discarded workpiece on the faulty stamping equipment, set the industrial robot at the upper station of the faulty stamping equipment to an allowable workpiece placing state, and control the industrial robot at the upper station to place the grabbed workpiece on the faulty stamping equipment.

[0108] It can be understood that the stamping production line abnormality processing device provided in this embodiment is a software and hardware combined device specifically used to implement the stamping production line abnormality processing method in Embodiment 2. It actually belongs to the control module in the embodiment, and can be the core module of the control module or a device including the control module. For example, the above-mentioned modules can be embedded in or independent of the processor in the control device in the form of hardware, or stored in the memory in the control device in the form of software, so as to facilitate the processor to call and execute the operations corresponding to each of the above modules. In this embodiment, building the stamping production line abnormality processing device using a PLC is a preferred embodiment. The repeated technical concepts in this embodiment can be understood and implemented with reference to Embodiment 1 and Embodiment 2, and will not be further described herein.

[0109] Embodiment 4

[0110] In one embodiment, a computer-readable storage medium is provided, on which a computer program is stored. When the computer program is executed by a processor, the processor is caused to execute the following steps:

[0111] Receive the working condition signal of the production line machine;

[0112] When any one or more of the production line machines fails, the faulty production line machine that has failed is controlled to a stop state according to the working condition signal;

[0113] The normal production line machines are controlled to a normal operation state, and for the normal production line machines adjacent to the faulty production line machine, the normal production line machines are controlled to maintain the state when they stop operating during interaction with the faulty production line machine.

[0114] It should be understood that although the steps in the flowcharts of the embodiments of the present invention are shown in sequence according to the arrows, these steps are not necessarily executed in the order indicated by the arrows. Unless there is a clear indication in this article, there is no strict order restriction for the execution of these steps, and these steps can be executed in other orders. Moreover, at least a part of the steps in each embodiment may include multiple sub-steps or multiple stages. These sub-steps or stages are not necessarily executed at the same moment, but can be executed at different moments. The execution order of these sub-steps or stages is not necessarily sequential, but can be executed alternately or alternately with at least a part of other steps or sub-steps or stages of other steps.

[0115] Those of ordinary skill in the art can understand that all or part of the processes of implementing the methods in the above embodiments can be completed by instructing relevant hardware through a computer program. The program can be stored in a non-volatile computer-readable storage medium. When the program is executed, it can include the processes of the embodiments of the above methods. Among them, any reference to a memory, storage, database or other medium used in the embodiments provided in the present application can include non-volatile and / or volatile memories. Non-volatile memories can include read-only memory (ROM), programmable ROM (PROM), electrically programmable ROM (EPROM), electrically erasable programmable ROM (EEPROM) or flash memory. Volatile memories can include random access memory (RAM) or external cache memory. By way of illustration and not limitation, RAM is available in various forms, such as static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), enhanced SDRAM (ESDRAM), synchronous link (Synchlink) DRAM (SLDRAM), memory bus (Rambus) direct RAM (RDRAM), direct memory bus dynamic RAM (DRDRAM), and memory bus dynamic RAM (RDRAM), etc.

[0116] The technical features of the above embodiments can be combined arbitrarily. For the sake of brevity of description, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered as the scope described in this specification.

[0117] The above embodiments only express several implementation manners of the present invention, but should not be construed as limiting the scope of the patent for the present invention. For those of ordinary skill in the art, without departing from the concept of the present invention, several modifications and improvements can still be made, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the patent for the present invention shall be subject to the appended claims.

Claims

1. An abnormal handling system for a stamping production line, characterized in that, It includes a control module and production line machines. The production line machines include a feeding belt, multiple industrial robots, and multiple stamping devices. The industrial robots at least include a first industrial robot, a second industrial robot, a third industrial robot... an Nth industrial robot. The stamping devices at least include a first stamping device, a second stamping device, a third stamping device... an Nth stamping device. The multiple industrial robots and the multiple stamping devices form the main body of the stamping production line. One industrial robot is arranged between two adjacent stamping devices, and the first industrial robot is located between the feeding belt and the first stamping device. The control module is communicatively connected to the industrial robots and the stamping devices; The industrial robots are used to place workpieces on the production line machines at the next station and pick up workpieces from the production line machines at the previous station under the control of the control module; The stamping devices are used to stamp and process workpieces under the control of the control module; The control module is used to receive the working condition signals of the production line machines. When any one or more of the production line machines fails, according to the working condition signals, the faulty production line machine is controlled to be in a stopped working state, and the normal production line machines are controlled to be in a normal operating state. For the normal production line machines adjacent to the faulty production line machine, the control module controls the normal production line machines to maintain the state when they stopped working during the interaction with the faulty production line machine; if the third stamping device is in a normal working state after processing the workpiece and its state changes from running to the state of allowing workpiece picking, after the subsequent industrial robot successfully picks up the workpiece, the state of the third stamping device changes from the state of allowing workpiece picking to the state of allowing workpiece placing. When the third industrial robot is in an abnormal state, the third stamping device is in a state that needs to interact with the faulty production line machine at this time, that is, the third stamping device just needs to maintain the state of allowing workpiece placing.

2. The abnormal handling system for a stamping production line as described in claim 1, wherein When the control module controls the industrial robot to place the workpiece on the production line machine at the next station, the control module includes: Receiving a first detection signal for determining whether there is a workpiece on the industrial robot. If there is no workpiece, the industrial robot is controlled to grab the workpiece from the production line machine at the previous station according to the first detection signal; Receiving a second detection signal for determining whether there is a workpiece on the industrial robot again. If there is a workpiece, the industrial robot is controlled to place the grabbed workpiece on the production line machine at the next station according to the second detection signal.

3. The abnormal handling system for the stamping production line as described in claim 2, wherein The control module receives a first detection signal for determining whether there is a workpiece on the industrial robot. If there is no workpiece, the industrial robot is controlled to grab the workpiece from the production line machine at the previous station according to the first detection signal, and it also includes: Receiving a first detection signal for determining whether there is a workpiece on the industrial robot. If there is a workpiece, the industrial robot after grabbing the workpiece is set to the running state, and the industrial robot is controlled to run to the workpiece placing position; Receive a third detection signal for determining whether there is material in the production line machine at the next station, and determine whether there is material in the production line machine at the next station according to the third detection signal; If there is no material, set the industrial robot after grasping the workpiece to the allowable workpiece placement state, and control the industrial robot to place the grasped workpiece on the production line machine at the next station; If there is material, set the industrial robot after grasping the workpiece to the waiting state.

4. The abnormal handling system for a stamping production line as described in claim 2, wherein, The control module receives a first detection signal for determining whether there is material on the industrial robot. If there is no material, when controlling the industrial robot to grasp the workpiece from the production line machine at the previous station according to the first detection signal, it further includes: Receive a fourth detection signal for determining whether there is material and allowing grasping on the production line machine at the previous station. If workpiece picking is allowed, control the industrial robot to grasp the workpiece from the production line machine at the previous station according to the fourth detection signal; if the grasping fails, set the industrial robot and the production line machine at the previous station to the abnormal state.

5. The abnormal handling system for a stamping production line as described in claim 1, characterized in that, If the faulty production line machine is a faulty stamping device, the control module is used to receive the working condition signal of the production line machine. When any one or more of the production line machines fails, control the faulty production line machine with the fault to the stop operation state according to the working condition signal, and further includes: Receive a fifth detection signal for determining whether the workpiece on the faulty stamping device can be used continuously; If the workpiece can be used continuously, control the faulty stamping device to restart according to the fifth detection signal, and reset the faulty stamping device to the allowable workpiece picking state; If the workpiece cannot be used continuously, after cleaning the waste workpiece on the faulty stamping device, control the faulty stamping device to restart according to the fifth detection signal, and reset the faulty stamping device to the allowable workpiece placement state.

6. The abnormal handling system for a stamping production line as described in claim 5, characterized in that, If the workpiece can be used continuously, the control module further includes: Set the industrial robot at the next station of the faulty stamping device to the allowable workpiece picking state, and control the industrial robot at the next station to pick up the workpiece from the faulty stamping device.

7. The abnormal handling system for a stamping production line as described in claim 5, characterized in that, If the workpiece cannot be used continuously, after cleaning the waste workpiece on the faulty stamping device, the control module further includes: Set the industrial robot at the previous station of the faulty stamping device to the allowable workpiece placement state, and control the industrial robot at the previous station to place the grasped workpiece on the faulty stamping device.

8. The abnormal handling system for a stamping production line as described in claim 1, wherein, The way of communication between the control module and the industrial robot and the stamping device is PLC communication.

9. A method for handling abnormalities in a stamping production line, which is applied to the control module of the stamping production line abnormality handling system according to any one of claims 1-8, characterized in that, It includes: Receive the working condition signal of the production line machine; When any one or more of the production line machines fails, control the faulty production line machine with the fault to the stop operation state according to the working condition signal; Control the normal production line machines to the normal operation state, and for the normal production line machines adjacent to the faulty production line machine, control the normal production line machines to maintain the state when stopping operation during interaction with the faulty production line machine.

10. An abnormal handling device for a stamping production line, which is applied to the stamping production line abnormal handling system described in any one of claims 1-8, and executes the stamping production line abnormal handling method described in claim 9, characterized in that, It includes: A signal receiving unit for receiving the working condition signal of the production line machine; The first control unit is configured to, when any one or more of the production line machines fails, control the faulty production line machine in a stopped operation state according to the working condition signal; The second control unit is configured to control the normal production line machines in a normal operation state, and for the normal production line machines adjacent to the faulty production line machine, control the normal production line machines to maintain the state when they stopped operating during the interaction with the faulty production line machine.

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