Automatic part forging method
Through the combination of PLC control system and optical fiber temperature sensor, real-time monitoring and control of the forging process is achieved, which solves the problems of imprecise part forming and high production costs, improves production efficiency and part quality, and reduces environmental pollution.
Patent Information
- Application Number
- CN202510514158.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-23
- Publication Date
- 2025-06-13
AI Technical Summary
The prior art lacks effective temperature monitoring and precision control in the forging of ultra-slim parts, resulting in imprecise forming, inappropriate material hardness or softening, and prone to problems such as increased internal stress, poor surface quality, oxidation and decarbonization. At the same time, the press molding height limits the length of the parts, resulting in increased production costs and cannot adapt to the changes in the length of the parts in the later stage.
The PLC control system is adopted, and the touch screen is communicated through the RS422 interface, and the heating temperature, the lower mold shift distance and the cooling water temperature range are set to realize real-time monitoring and control of the forging process. Use fiber optic temperature sensor to detect the temperature of the part to ensure forming accuracy. Water atomization cooling is used instead of inkjet mechanisms to improve production efficiency and reduce environmental pollution. High-precision positioning and good repeatability of parts are achieved through servo motors and lower-mode shift sensors.
Effective supervision of the forging process is achieved, ensuring the consistency of end forming and high-precision positioning of each part, reducing workload and production costs, improving production efficiency, and reducing environmental pollution.
Smart Images
Figure CN120133418A_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to a method for precision forging of parts in the technical field of press part processing. Background Art
[0002] Ultra-slender parts are heated using an intermediate frequency heating furnace device without monitoring the temperature of the parts, resulting in imprecise forging of the parts. If the heating temperature of the parts is too low, it will cause high material hardness (difficult to shape and form), increased internal stress (prone to deformation or cracking), and poor surface quality (rough); if the heating temperature of the parts is too high, it will cause excessive softening of the material (excessive softening after high temperature, difficult to maintain shape, affecting precision), coarse grains (grain growth), oxidation and decarburization (formation of oxide scale and decarburized layer on the surface, affecting surface quality and dimensional accuracy); Slender parts are automatically placed into the lower die by a loading robotic arm, formed by stamping with a press, and then the processed parts are taken out by an unloading robotic arm to complete one process. When the length dimension of the part exceeds the die-set height dimension of the press, the part cannot be processed continuously, and a new press needs to be customized, resulting in increased production costs for the user. Moreover, when the part length needs to be increased again later, the press cannot achieve it.
[0003] After stamping by the press, there is occasionally a phenomenon that the part gets stuck with the lower die, resulting in the robotic arm being unable to take out the part. Forced extraction will cause damage to the robotic arm and affect the production speed; During stamping, an inkjet mechanism is used to cool the parts. Working under high temperature for a long time, the inkjet nozzles are prone to blockage, requiring customization and maintenance, increasing the workload and reducing production efficiency, and causing certain pollution to the working environment; The loading robotic arm and unloading robotic arm used are suitable for grasping parts at fixed positions. When processing parts of different sizes, re-calibration and positioning are required, reducing production efficiency. Summary of the Invention
[0004] The purpose of the present invention is to provide an automatic forging method for parts, which can effectively supervise the forging process, improve production efficiency, and ensure stamping accuracy.
[0005] To achieve the above purpose, the present invention provides an automatic forging method for parts, Step 1, parameter setting; Step 2, status detection; Step 3, loading; Step 4, forming stamping; Step 5, unloading.
[0006] Compared with the prior art, the beneficial effect of the present invention is that after the parameters are set, the status of the relevant equipment is checked. If there is no problem, the work is started, the raw materials are sent to the press for stamping processing, and after processing and forming, the product is taken out of the press. The whole process is effectively supervised, ensuring the consistency of the forming of each part end, high-precision positioning and good repeatability, reducing workload and improving production efficiency, ensuring stamping accuracy.
[0007] As a further improvement of the present invention, the specific contents of step 1 are as follows: The PLC uses the RS422 interface to communicate with the touch screen, and the lower mold shift distance parameter is set to Xmm on the touch screen, the cooling water temperature range is set to T1℃-T2℃, and the temperature of the heated parts is set to T3℃.
[0008] In this way, various parameters can be conveniently set through the touch screen, and the heating temperature, lower mold moving distance and cooling water temperature can be accurately monitored to improve processing accuracy.
[0009] As a further improvement of the present invention, the specific contents of step 2 are as follows: Step 2.1, power on and detect each signal, PLC input terminal X0 detects whether the state of the medium frequency heating furnace is normal, PLC input terminal X1 detects whether the state of the loading robot is normal, PLC input terminal X2 detects whether the state of the unloading robot is normal, PLC input terminal X3 detects whether the state of the press is normal, PLC input terminal X4 detects whether the top dead point position of the press is accurate, PLC detects whether the part heating temperature is normal through the part forming temperature sensor, PLC detects whether the cooling water temperature is normal through the cooling water temperature sensor, PLC detects whether the lower die position origin position is accurate through the lower die displacement sensor, PLC input terminal X11 detects whether the lower die servo controller is normal; Step 2.2, when the above loop detections are normal, the PLC control output terminal Y10 is connected, the PF1 yellow indicator light is on, and the PLC is in standby state; if one of the loop detections is abnormal, the PLC control output terminal Y12 is connected, the PF3 red indicator light is on, and the PLC is in fault state.
[0010] After effective detection of each monitoring point, the PLC will enter normal standby state and can be started at any time to control the forging process. If a fault occurs, an alarm will be prompted.
[0011] As a further improvement of the present invention, the specific contents of step 3 are as follows: Step 3.1, press the master control start button SB1, the PLC input terminal X14 has a signal, the PLC control output terminal Y11 is connected, the PF2 green indicator light is on, the PLC is in working state, the output terminal Y10 is disconnected, and the PF1 yellow indicator light is off; Step 3.2, the PLC controls the output terminal Y1 to be turned on to control the feeding robot to pick up and transfer parts; at the same time, the PLC controls the servo controller TA1 to rotate forward through the Ethernet RJ, driving the lower die to shift X mm outward to the front outside of the workbench, and the lower die displacement sensor BE1 is used to check the displacement distance. If there is a fault during the checking process, the feeding process of the feeding robot is immediately stopped; Step 3.3, when the feeding robot places the part in the lower die, the PLC input terminal X12 detects a signal, indicating that the feeding robot has completed placing the part; when the part has been correctly placed in the lower die, the PLC input terminal X7 detects a signal; the PLC controls the servo controller TA1 to rotate in reverse through the Ethernet RJ, driving the lower die to shift X mm back to the center of the workbench at the origin position and return to its original position, and the lower die displacement sensor BE1 is used to check the displacement distance.
[0012] In this way, the built-in encoder in the servo motor and the lower die displacement sensor BE1 are used to form a double-loop position detection and closed-loop control, ensuring the position consistency of the parts to be placed and grabbed, so as to realize the precise grasping of the feeding robot.
[0013] As a further improvement of the present invention, the specific content of step 4 is as follows. Step 4.1, the PLC controls the output terminal Y5 to be turned on to control the press to perform a one-time forming stamping; the slider of the press runs one week within 0-360 degrees; Step 4.2, the PLC controls the input terminal X6 to be turned on, and the PLC controls the output terminal Y3 to be turned on to control the intermediate relay KA4 to be energized, and its auxiliary contact controls the cooling water pump motor M2 to work to perform water atomization cooling on the formed part; Step 4.3, the PLC controls the output terminal X6 to be disconnected, and the PLC controls the output terminal Y3 to be disconnected to control the intermediate relay KA4 to be de-energized, and its auxiliary contact controls the cooling water pump motor M2 to stop, ensuring that the cooling device is only turned on during the forming stamping, saving water and avoiding waste of resources; Step 4.4, the PLC controls the input terminal X10 to be turned on, and the PLC controls the output terminal Y6 to be turned on to control the intermediate relay KA7 to be energized, and its auxiliary contact controls the ejector valve YV1 to work, and the ejector valve controls the cylinder to eject the part from the bottom of the lower die to ensure that the part is not stuck with the lower die; Step 4.5, when the PLC controls the input terminal X5 to be turned on and the ejecting is in place, the PLC controls the output terminal Y6 to be disconnected to control the intermediate relay KA7 to be de-energized, and its auxiliary contact controls the ejector valve YV1 to stop working, and the cylinder returns to its original position.
[0014] The temperature detection using the fiber optic temperature sensor precisely monitors the heating temperature, ensuring the accuracy of the end forming; the use of a robot to grasp and a forging die guarantees the consistency of the end forming of each part, with high-precision positioning and good repeatability; the use of water cooling instead of an inkjet mechanism reduces the workload and improves production efficiency; the working environment is improved: the inkjet mechanism is cancelled, reducing the emission of toner and the environmental pollution.
[0015] As a further improvement of the present invention, the specific content of step 5 is as follows Step 5.1, after the press forming and stamping are completed, the PLC control output terminal Y2 is turned on to control the blanking robot to pick up and transfer the parts; Step 5.2, when the blanking robot 2 takes out the part from the lower die, the PLC input terminal X13 detects a signal and the PLC input terminal X7 detects no signal, indicating that the blanking robot has completed picking up the part.
[0016] This can achieve precise grasping by the blanking robot, ensure high-precision stamping forming, and protect the use of the die.
[0017] As a further improvement of the present invention, in steps 3 - 5, when an abnormal situation is detected, the emergency stop is carried out by pressing the emergency stop device SB2. The PLC input terminal X15 has a signal, controlling the PLC to stop all outputs to avoid accidents.
[0018] This forms an effective safety protection, improves the safety level, and avoids accidents. BRIEF DESCRIPTION OF THE DRAWINGS
[0019] Figure 1 It is the electrical principle of the present invention Figure 1 .
[0020] Figure 2 It is the electrical principle of the present invention Figure 2 . SPECIFIC EMBODIMENTS
[0021] The present invention will be further described below with reference to the drawings: As Figure 1-2 shown in a method for automatic forging of parts, which includes the following content, Step 1, parameter setting; The PLC uses an RS422 interface to communicate with the touch screen, and in the touch screen interface, the lower die shift distance parameter is set to X mm, the temperature range of the cooling water is set to T1℃ - T2℃, and the temperature of the heated part is set to T3℃.
[0022] Step 2, status detection; Step 2.1, power on to detect all signals. The PLC input terminal X0 detects whether the intermediate frequency heating furnace is in normal state, the PLC input terminal X1 detects whether the loading robot is in normal state, the PLC input terminal X2 detects whether the unloading robot is in normal state, the PLC input terminal X3 detects whether the press is in normal state, the PLC input terminal X4 detects whether the top dead center position of the press is accurate, the PLC detects the normal heating temperature of the part through the part forming temperature sensor, the PLC detects the normal cooling water temperature through the cooling water temperature sensor, the PLC detects whether the origin position of the lower die is accurate through the lower die displacement sensor, and the PLC input terminal X11 detects whether the lower die servo controller is normal; Step 2.2, when all the above circuit detections are normal, the PLC controls the output terminal Y10 to be turned on, and the PF1 yellow indicator light is on, and the PLC is in the standby state; if one of the circuit detections is abnormal, the PLC controls the output terminal Y12 to be turned on, and the PF3 red indicator light is on, and the PLC is in the fault state.
[0023] Step 3, loading; Step 3.1, press the total control start button SB1, the PLC input terminal X14 has a signal, the PLC controls the output terminal Y11 to be turned on, the PF2 green indicator light is on, the PLC is in the working state, the output terminal Y10 is turned off, and the PF1 yellow indicator light is off; Step 3.2, the PLC controls the output terminal Y1 to be turned on to control the loading robot to pick up and transfer the part; at the same time, the PLC controls the servo controller TA1 to rotate forward through the Ethernet RJ, drives the lower die to shift X mm to the front outer side of the workbench board, and uses the lower die displacement sensor BE1 to check the displacement distance. If there is a fault during the verification process, immediately stop the loading process of the loading robot; Step 3.3, when the loading robot places the part in the lower die, the PLC input terminal X12 detects a signal, and the loading robot has completed placing the part; when the part has been correctly placed in the lower die, the PLC input terminal X7 detects a signal; the PLC controls the servo controller TA1 to rotate reversely through the Ethernet RJ, drives the lower die to shift X mm back to the center of the workbench board at the origin position, and uses the lower die displacement sensor BE1 to check the displacement distance.
[0024] Step 4, forming stamping; Step 4.1, the PLC controls the output terminal Y5 to be turned on to control the press to perform a forming stamping; the slider of the press runs one week within 0 - 360 degrees; Step 4.2, the PLC controls the input terminal X6 to be turned on, the PLC controls the output terminal Y3 to be turned on to control the intermediate relay KA4 to be energized, and its auxiliary contact controls the cooling water pump motor M2 to work to perform water atomization cooling on the formed part; Step 4.3, the PLC controls the output terminal X6 to disconnect, and the PLC controls the output terminal Y3 to disconnect, controlling the intermediate relay KA4 to lose power. Its auxiliary contact controls the cooling water pump motor M2 to stop, ensuring that the cooling device is only turned on during forming stamping, saving water and avoiding waste of resources; Step 4.4, the PLC controls the input terminal X10 to connect, and the PLC controls the output terminal Y6 to connect, controlling the intermediate relay KA7 to be energized. Its auxiliary contact controls the ejector valve YV1 to work, and the ejector valve controls the cylinder to eject the part from the bottom of the lower die, ensuring that the part is not stuck with the lower die; Step 4.5, when the PLC controls the input terminal X5 to connect and the ejecting is in place, the PLC controls the output terminal Y6 to disconnect, controlling the intermediate relay KA7 to lose power. Its auxiliary contact controls the ejector valve YV1 to stop working, and the cylinder retracts to its original position.
[0025] Step 5, blanking.
[0026] Step 5.1, after the press forming stamping is completed, the PLC controls the output terminal Y2 to connect, controlling the blanking robot to pick up and transfer the part; Step 5.2, when the blanking robot 2 takes out the part from the lower die, the PLC input terminal X13 detects a signal, and the PLC input terminal X7 detects no signal, indicating that the blanking robot has completed picking up the part.
[0027] In Steps 3 - 5, when an abnormal situation is detected, the emergency stop is carried out by pressing the emergency stop device SB2. The PLC input terminal X15 has a signal, controlling the PLC to stop all outputs to avoid accidents.
[0028] In the present invention, slender parts are heated and raised in temperature by an intermediate frequency furnace device. When the parts are sent out of the intermediate frequency furnace, a fiber optic temperature sensor BT1 is used for temperature detection (measuring the temperature of the part end by using the optical characteristics of the optical fiber, with the advantages of strong anti - electromagnetic interference ability and being suitable for harsh environments). The detected temperature value is transmitted to the master control PLC through the RS485 communication interface. The PLC processes the data and displays the detected value in real time on the touch screen. When the set temperature range is exceeded, a fault signal Y0 is sent to remind the user to handle it, and the heating furnace is checked, forming an effective supervision mechanism to ensure the accuracy of the parts after forming; when the temperature is qualified, the next action is carried out.
[0029] The die for the end of the forging part is divided into an upper die and a lower die. The upper die is fixed to the bottom surface of the slider, and the lower die is fixed on the upper surface of the workbench plate. There is a sliding guide between the lower die and the workbench plate. There is a part sensor BG1 at the bottom center of the lower die, and a displacement sensor BE1 is used for the moving stroke of the guide; a servo motor M1 is connected to the rear side of the lower die. A knockout cylinder is installed under the center of the workbench plate and is controlled by the solenoid valve YV1.
[0030] Three groups of water cooling control methods are used to replace the inkjet mechanism, and atomization is performed at the water outlet. The optical fiber temperature sensor BT2 is used in the water tank to detect the temperature of the cooling water. The detected temperature value is transmitted to the master control PLC through the RS485 communication interface. The PLC processes the data and displays the detected value in real time on the touch screen. When it is lower than 20°C, the master control PLC controls Y4 to turn on, the intermediate relay KA5 is energized and turned on, and the KA5 contact is connected to control the electric heating rod in the cooling water tank to be energized (AC220V) for heating. When the cooling water in the water tank is heated to 40°C, the master control PLC controls Y4 to disconnect, the intermediate relay KA5 is powered off, and the KA5 contact is connected to control the electric heating rod in the cooling water tank to power off and stop heating; 20°C-40°C cooling water mist is used to cool the surface of the parts, with good uniformity, and the parts will not crack or deform due to the cooling water temperature or too fast cooling speed. And because of the characteristics of water, it is ensured that long-term work at high temperature will not cause outlet blockage (not limited to water mist or gas mist).
[0031] A loading robot is used to grab and shift the heated parts to the upper die, and a unloading robot is used to grab and shift the formed parts to the next process. Through high-precision sensors and control systems, millimeter-level positioning can be achieved. It can also quickly adapt to the grabbing of different parts through programming, and can store, access and call parts according to their specifications, reducing mold change time and improving mold change efficiency.
[0032] The built-in encoder in the servo motor M1 and the lower die displacement sensor BE1 are used to form a dual-circuit position detection and closed-loop control, which ensures the position consistency of the parts to be placed and grasped, thereby achieving precise grasping of the loading and unloading robots, and also ensuring high-precision stamping and protecting the use of the mold.
[0033] The present invention can be applied to ultra-slender parts with a length-to-diameter ratio greater than 20:1. The specific parameter data setting can be performed as follows. The PLC uses an RS422 interface to communicate with the touch screen, and the lower mold displacement distance parameter is set to 500mm on the touch screen, the cooling water temperature range is set to 20℃-40℃, and the temperature of the heated parts is set to 1000℃. The above parameters can be set according to actual conditions.
[0034] Power on and detect each signal. When the medium frequency heating furnace is detected to be in normal condition, the loading robot ( Figure 1 The robot 1) is in normal condition, the unloading robot ( Figure 1The robot 2) is in normal state, the press is in normal state, the top dead center position of the press is normal, the part heating temperature is normal, the cooling water temperature is normal, the lower die position is at the origin position, the lower die servo controller is normal, the PLC controls Y10 to be turned on, the PF1 yellow indicator light is on, and it is in the standby state. If any one of the loop detections is abnormal, the master PLC controls Y12 to be turned on, the PF3 red indicator light is on, and the PLC is in the fault state.
[0035] After the above detections are all normal, press the master start button SB1, the PLC input terminal X14 has a signal, the master PLC controls Y11 to be turned on, the PF2 green indicator light is on, the PLC is in the working state, Y10 is turned off, and the PF1 yellow indicator light is off.
[0036] The PLC controls the output terminal Y1 to be turned on to control the feeding robot to pick up and transfer parts; at the same time, the PLC controls the servo controller TA1 to rotate forward through the Ethernet RJ, driving the lower die to shift 500 mm outward to the front side of the workbench plate, and uses the lower die displacement sensor BE1 to verify the displacement distance (if there is a fault during the verification process, immediately stop the feeding process of the feeding robot); because the lower die is moved out of the workbench plate, the length dimension of the part to be processed is no longer limited by the die setting height parameter of the press.
[0037] When the feeding robot places the part into the lower die, the PLC input terminal X12 detects a signal, and the feeding robot has completed placing the part; the part has been correctly placed in the lower die, and the PLC input terminal X7 detects a signal; the PLC controls the servo controller TA1 to rotate backward through the Ethernet RJ, driving the lower die to shift 500 mm to the center of the workbench plate at the origin position, and uses the lower die displacement sensor BE1 to verify the displacement distance and return to the original position.
[0038] The PLC controls the output terminal Y5 to be turned on to control the press to perform a forming stamping; the slider of the press runs one week within 0 - 360 degrees; when it is detected that the PLC control input terminal X6 (working range 160 - 250, which can be set according to the site) is turned on, the PLC controls the output terminal Y3 to be turned on to control the intermediate relay KA4 to be energized, and its auxiliary contact controls the cooling water pump motor M2 to work to perform water atomization cooling on the formed part; when it is detected that the PLC control output terminal X6 is turned off, the PLC controls the output terminal Y3 to be turned off to control the intermediate relay KA4 to be de-energized, and its auxiliary contact controls the cooling water pump motor M2 to stop, ensuring that the cooling device is only turned on during forming stamping, saving water and avoiding waste of resources.
[0039] When it is detected that the PLC control input terminal X10 (working range 200 - 300, which can be set according to the site) is turned on, the PLC control output terminal Y6 is turned on, controlling the intermediate relay KA7 to be energized. Its auxiliary contact controls the top feeding valve YV1 to work, and the top feeding valve controls the cylinder to eject the part from the bottom of the lower die to ensure that the part is not stuck with the lower die. When the PLC control input terminal X5 is turned on, the top feeding is in place, the PLC control output terminal Y6 is turned off, controlling the intermediate relay KA7 to be de-energized. Its auxiliary contact controls the top feeding valve YV1 to stop working, and the cylinder returns to its original position.
[0040] After the press forming and stamping are completed, the master control PLC control output terminal Y2 is turned on to control the blanking robot to pick up and transfer the part; when the blanking robot 2 takes out the part from the lower die, the PLC input X13 terminal detects a signal and the PLC input X7 terminal detects no signal, indicating that the blanking robot has completed picking up the part; the part has been processed once.
[0041] During the above operation process, when an abnormal situation is detected, it is also possible to perform an emergency stop by pressing the emergency stop device SB2. The PLC input X15 terminal has a signal, controlling the PLC to stop all outputs to avoid accidents.
[0042] The present invention is not limited to the above embodiments. Based on the disclosed technical solutions, those skilled in the art can make some substitutions and deformations to some of the technical features without creative labor according to the disclosed technical content, and these substitutions and deformations are all within the protection scope of the present invention.
Claims
1. A method for automated forging of parts, characterized in that: Include the following: Step 1, parameter setting; Step 2, status detection; Step 3, loading; Step 4, forming and stamping; Step 5, cutting.
2. The automatic forging method for parts according to claim 1, characterized in that: The specific contents of step 1 are as follows: The PLC uses the RS422 interface to communicate with the touch screen, and the lower mold shift distance parameter is set to Xmm on the touch screen, the cooling water temperature range is set to T1℃-T2℃, and the temperature of the heated parts is set to T3℃.
3. The automatic forging method for parts according to claim 2, characterized in that: The specific contents of step 2 are as follows: Step 2.1, power on and detect each signal, PLC input terminal X0 detects whether the state of the medium frequency heating furnace is normal, PLC input terminal X1 detects whether the state of the loading robot is normal, PLC input terminal X2 detects whether the state of the unloading robot is normal, PLC input terminal X3 detects whether the state of the press is normal, PLC input terminal X4 detects whether the top dead point position of the press is accurate, PLC detects whether the part heating temperature is normal through the part forming temperature sensor, PLC detects whether the cooling water temperature is normal through the cooling water temperature sensor, PLC detects whether the lower die position origin position is accurate through the lower die displacement sensor, PLC input terminal X11 detects whether the lower die servo controller is normal; Step 2.2, when the above loop detections are normal, the PLC control output terminal Y10 is connected, the PF1 yellow indicator light is on, and the PLC is in standby state; if one of the loop detections is abnormal, the PLC control output terminal Y12 is connected, the PF3 red indicator light is on, and the PLC is in fault state.
4. A method for automatic forging of parts according to claim 3, characterized in that: The specific contents of step 3 are as follows: Step 3.1, press the master control start button SB1, the PLC input terminal X14 has a signal, the PLC control output terminal Y11 is connected, the PF2 green indicator light is on, the PLC is in working state, the output terminal Y10 is disconnected, and the PF1 yellow indicator light is off; Step 3.2, the PLC controls the output terminal Y1 to be turned on, and controls the loading robot to pick up and transfer the parts; at the same time, the PLC controls the servo controller TA1 to run forward through Ethernet RJ, driving the lower die to shift Xmm to the front outer side of the worktable, and uses the lower die shift sensor BE1 to verify the shift distance. If there is a fault during the verification process, the loading process of the loading robot is stopped immediately; Step 3.3, when the loading robot places the part in the lower mold, the PLC input terminal X12 detects a signal and the loading robot completes the part placement; when the part is correctly placed in the lower mold, the PLC input terminal X7 detects a signal; the PLC controls the servo controller TA1 to run in the reverse direction through Ethernet RJ, driving the lower mold to shift Xmm to the center of the worktable at the origin position and return to its original position, and uses the lower mold shift sensor BE1 to verify the shift distance.
5. A method for automatic forging of parts according to claim 4, characterized in that: The specific contents of step 4 are as follows: Step 4.1, the PLC control output terminal Y5 is turned on, and the press is controlled to perform a forming stamping; the slide of the press runs one circle within 0-360 degrees; Step 4.2, the PLC control input terminal X6 is turned on, the PLC control output terminal Y3 is turned on, the control intermediate relay KA4 is energized, and its auxiliary contacts control the cooling water pump motor M2 to work, and the formed parts are cooled by water atomization; Step 4.3, PLC control output terminal X6 is disconnected, PLC control output terminal Y3 is disconnected, control intermediate relay KA4 to be powered off, and its auxiliary contact controls cooling water pump motor M2 to stop, ensuring that the cooling device is turned on only during forming and stamping, saving water and avoiding waste of resources; Step 4.4, PLC control input terminal X10 is turned on, PLC control output terminal Y6 is turned on, control intermediate relay KA7 to be energized, and its auxiliary contact controls the ejection valve YV1 to work. The ejection valve controls the cylinder to eject the part from the bottom of the lower die to ensure that the part and the lower die are not stuck; Step 4.5, when the PLC control input terminal X5 is connected, the material is pushed into place, the PLC control output terminal Y6 is disconnected, the intermediate relay KA7 is controlled to be de-energized, and its auxiliary contact controls the push valve YV1 to stop working, and the cylinder returns to its original position.
6. A method for automatic forging of parts according to claim 5, characterized in that: Step 5: Step 5.1, after the forming and stamping of the press is completed, the PLC control output terminal Y2 is turned on to control the unloading robot to pick up and transport the parts; Step 5.2: When the unloading robot 2 takes the part out of the lower mold, the PLC input terminal X13 detects a signal, and the PLC input terminal X7 detects no signal, and the unloading robot completes the part removal.
7. A method for automatic forging of parts according to claim 6, characterized in that: In step 3-5, when an abnormal situation is found, an emergency stop is performed by pressing the emergency stop device SB2. There is a signal at the PLC input terminal X15, which controls the PLC to stop all outputs to avoid accidents.