High speed pneumatic punch and control method thereof

Abstract

This invention discloses a high-speed pneumatic punch press and its control method, specifically relating to the field of metal stamping equipment. The press includes a frame, on which are fixedly connected an air tank, a first air valve, a pneumatic motor, a temporary storage tank, and another air valve. The pneumatic motor has an air inlet and an air outlet. An air supply pipe is fixedly connected between the air tank and the first air valve, and another air supply pipe is fixedly connected between the first air valve and the first air inlet. A return air pipe is fixedly connected between the temporary storage tank and the first air valve, and another return air pipe is fixedly connected between the first air valve and the first air outlet. A proportional pressure regulating valve is fixedly connected to the first air supply pipe. An output shaft is fixedly connected to the output end of the pneumatic motor. This invention achieves dual recovery of electrical energy and exhaust pressure by setting up a flywheel energy storage unit composed of a flywheel rotor and a flywheel stator, along with a temporary storage tank. This effectively reduces the unit stamping energy consumption and air source load of the equipment, enabling the device to achieve the same effect with less energy when applied to aerospace aluminum alloy forgings.

Description

Technical Field

[0001] This invention relates to the field of equipment for stamping metal, and more specifically, to a high-speed pneumatic punch press and its control method. Background Technology

[0002] A pneumatic punch press is a mechanical device that uses compressed air as the power medium and drives the punching mechanism through a pneumatic motor or cylinder to achieve high-speed reciprocating motion. It is used to punch, form, stretch and other processes on metal sheets. Compared with traditional mechanical punch presses and hydraulic punch presses, especially when used for aerospace aluminum alloy forgings, pneumatic punch presses have advantages such as compact structure, no oil pollution, fast response speed, high punching frequency and easy automation control.

[0003] In the prior art, Chinese Patent No. CN118595261B discloses a high-speed precision pneumatic punch press. This pneumatic punch press includes a mold assembly, a pneumatic mechanism that provides power to the punch press, and a stamping mechanism that can drive the upper mold to move linearly up and down. The stamping mechanism is connected to the pneumatic mechanism through a transmission component. The stamping mechanism includes a piston plate that can move linearly up and down with the crankshaft, at least two sliders that can move linearly in opposite directions or back to back with the linear movement of the piston plate, and a stamping block that can move linearly up and down with the linear movement of the at least two sliders in opposite directions or back to back. This pneumatic punch press has a high stamping speed and high precision. However, its pneumatic motor needs to operate at high power throughout the entire stamping cycle and cannot dynamically adjust the output power according to the load changes. Moreover, the gravitational potential energy during the slider's downward movement and the motion resistance during the return movement are directly dissipated as heat and noise, and cannot be effectively recovered and reused. This results in high unit stamping energy consumption, large air source load, and high long-term operating costs.

[0004] In summary, in order to reduce the unit stamping energy consumption of high-speed pneumatic punch presses and improve energy utilization efficiency, it is necessary to solve the problems in the existing technology that pneumatic motors cannot dynamically adjust power according to the load, and that the gravitational potential energy of the slide block during downward movement and the return resistance are directly dissipated and cannot be recovered, so that pneumatic punch presses can achieve efficient energy recovery and reuse, and better adapt to aerospace aluminum alloy forgings. Summary of the Invention

[0005] The present invention provides a high-speed pneumatic punch press and its control method, which aims to solve the following problems: in the prior art, the pneumatic motor cannot dynamically adjust its power according to the load, and the gravitational potential energy and return resistance of the slide block are directly dissipated and cannot be recovered.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a high-speed pneumatic punch press, comprising a frame, on which an air tank, an air valve, a pneumatic motor, a temporary storage tank, and an air valve are fixedly connected. The pneumatic motor has an air inlet and an air outlet. An air supply pipe is fixedly connected between the air tank and the air valve. An air supply pipe is fixedly connected between the air valve and the air inlet. A return air pipe is fixedly connected between the temporary storage tank and the air valve. A return air pipe is fixedly connected between the air valve and the air outlet. A proportional pressure regulating valve is fixedly connected to the air supply pipe. An output shaft is fixedly connected to the output end of the pneumatic motor. A transmission assembly is mounted on the output shaft. The power output end of the transmission assembly is connected to a transmission roller. The transmission assembly is used to drive the transmission roller to rotate. A speed sensor is fixedly connected to the transmission roller. The speed sensor is used to detect the speed of the transmission roller. A mounting frame and a flywheel are fixedly connected inside the transmission roller. An inertia adjustment assembly is mounted on the mounting frame. Several counterweights arranged in a circular array are slidably connected to the flywheel. The output end of the inertia adjustment assembly is connected to any one of the counterweights. The inertia adjustment assembly is used to drive the counterweight to move along a preset direction. A fixed sleeve is fixedly connected to the frame, and several braking components are installed on the fixed sleeve. The output end of the braking components is connected to a braking module, and the braking components reduce speed by driving the flywheel through the braking module.

[0007] In a preferred embodiment, the transmission assembly includes a first synchronous pulley fixedly connected to the output shaft, a synchronous belt with one end sleeved on the first synchronous pulley, and a second synchronous pulley sleeved on the other end of the synchronous belt. The second synchronous pulley and the transmission roller are fixedly connected. A sealing cover is fixedly connected to the frame. A crankshaft is fixedly connected to the end side of the transmission roller. The outer side of the transmission roller and the sealing cover are rotatably connected.

[0008] In a preferred embodiment, the inertia adjustment assembly includes a servo motor fixedly connected to the mounting bracket, a linkage one fixedly connected to the output end of the servo motor at one end, and a shift fork rotatably connected to the other end of the linkage one. The shift fork is fixedly connected to any counterweight, and the servo motor is used to drive the linkage one to rotate.

[0009] In a preferred embodiment, a shield is fixedly connected to the end of the flywheel disk away from the mounting frame, a flywheel rotor is fixedly connected to the outside of the shield, and a flywheel stator is fixedly connected to the inside of the sealing cover. The fixed sleeve is provided with an air pressure distribution chamber and a motion guide chamber from the inside to the outside. The braking assembly includes a slide rod that is slidably connected in the motion guide chamber, a pressure column that is fixedly connected to the slide rod at one end, and a compression spring that is fixedly connected between the air inlet and the slide rod. The braking module includes a brake sleeve fixedly connected to the other end of the pressure post and a brake disc fixedly connected to the side of the flywheel rotor away from the shield.

[0010] In a preferred embodiment, the fixed sleeve is provided with an air inlet and an exhaust port, and an air supply branch pipe is fixedly connected between the air inlet and the return air pipe.

[0011] In a preferred embodiment, the counterweight is provided with limiting posts at both ends, and the flywheel is provided with a number of radially distributed limiting grooves. A synchronizing disk is rotatably connected to the inner side of the flywheel, and the synchronizing disk is provided with a number of curved limiting grooves. The limiting grooves are arranged in a one-to-one correspondence with the limiting grooves. The limiting posts pass through the corresponding limiting grooves and the limiting grooves and slide with both.

[0012] In a preferred embodiment, a mounting ring is fixedly connected to the synchronization disk, a tapered tensioning sleeve is installed inside the mounting ring, and a locking component is installed inside the shielding cover; The locking assembly includes an electromagnetic coil fixedly connected inside the shielding cover, an armature slidably connected inside the shielding cover, a pressure head fixedly connected to the armature, and a compression spring fixedly connected between the pressure head and the shielding cover. Under the elastic force of the compression spring, the armature presses against the conical tension sleeve. When the electromagnetic coil is energized, the electromagnetic force generated can overcome the elastic force of the compression spring and cause the armature to disengage from the conical tension sleeve.

[0013] In a preferred embodiment, a stamping assembly is mounted on the crankshaft, and a stamping block is connected to the power output end of the stamping assembly. The stamping assembly is used to drive the stamping block to perform rapid reciprocating motion in the vertical direction. Several pressing rollers are fixedly connected to the stamping block, an upper mold loading plate is fixedly connected to the bottom of the stamping block, an upper mold is fixedly connected to the bottom of the upper mold loading plate, and a lower mold is fixedly connected to the frame.

[0014] The stamping assembly includes a connecting rod 2 rotatably connected to the crankshaft at one end, a connecting plate rotatably connected to the other end of the connecting rod 2, two connecting rods 3 rotatably connected to the connecting plate at one end, a slider rotatably connected to the other end of the connecting rod 3, and a connecting slide rail fixedly connected to the bottom of the slider. Two guide rods are fixedly connected to the frame. The guide rods and the slider are slidably connected. The connecting slide rail and the pressure roller are slidably connected.

[0015] When using the control method of a high-speed pneumatic punch press according to this technical solution, a high-speed pneumatic punch press as described above is used, and the steps are as follows: S1: Open air valve one, and the compressed gas in the air tank enters the air inlet one of the pneumatic motor through air delivery pipe one, proportional pressure regulating valve and air delivery pipe two, driving the pneumatic motor to start. The pneumatic motor drives the transmission roller and crankshaft to rotate through the output shaft and transmission components. S2: The crankshaft drives the stamping block to reciprocate rapidly in the vertical direction through the stamping assembly, so that the upper and lower dies cooperate to stamp the workpiece; S3: The transmission roller drives the flywheel rotor to rotate. The relative motion between the flywheel rotor and the flywheel stator generates and stores electrical energy. The gas discharged from the pneumatic motor enters the temporary storage tank for recovery through exhaust port 1, return gas pipe 2, gas valve and return gas pipe 1. S4: The speed sensor detects the speed of the transmission roller in real time. According to the workpiece thickness and load, the intake pressure is adjusted by the proportional pressure regulating valve. At the same time, the inertia adjustment component drives the counterweight to move radially, adjusts the rotational inertia of the flywheel, and dynamically adjusts the amount of energy recovered. S5: After the inertia adjustment is completed, the locking component will activate to lock the synchronization disk and prevent the counterweight from loosening. S6: After stamping is completed, the gas recovered in the temporary storage tank enters the pneumatic motor or braking assembly through the air valve and return air pipe 2 to assist the stamping block to return. At the same time, when an emergency stop is required, the braking assembly can be used to drive the brake sleeve to decelerate and brake the brake disc.

[0016] The beneficial effects of this invention are as follows: 1. This invention achieves dual recovery of electrical energy and exhaust pressure by setting up a flywheel energy storage unit composed of a flywheel rotor and a flywheel stator, as well as a temporary storage tank. This effectively reduces the unit stamping energy consumption and air source load of the equipment, enabling the device to achieve the same effect with less energy consumption when applied to aerospace aluminum alloy forgings.

[0017] 2. This invention achieves dynamic adjustment of the flywheel's rotational inertia through a servo motor, connecting rod one, shift fork, counterweight, limit groove one on the flywheel disk, and limit groove two on the synchronous disk. This eliminates the need for the pneumatic motor to operate at high power throughout the entire process, adapting to different load conditions of various high-strength aluminum alloy forgings for aerospace applications and improving the accuracy of aluminum alloy forgings.

[0018] 3. The present invention sets up a pressure distribution chamber, a motion guide chamber, a slide rod, a pressure column, a compression spring, and a brake sleeve in the fixed sleeve, and connects the return air pipe and the air inlet to the air inlet in conjunction with the air supply branch pipe, so as to realize conical braking by using the recovered gas, without the need for an additional brake air source.

[0019] 4. This invention achieves a self-locking function after inertia adjustment by setting up an electromagnetic coil, armature, pressure head, compression spring, and conical tensioning sleeve, thus preventing the counterweight from loosening at high speeds.

[0020] 5. By setting up a speed sensor and a proportional pressure regulating valve, this invention realizes real-time monitoring of the transmission roller speed and dynamic adjustment of the intake pressure, further optimizing energy recovery efficiency and stamping stability. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall structure of the present invention.

[0022] Figure 2This is a schematic diagram of the frame structure of the present invention.

[0023] Figure 3 This is a schematic diagram of the location and structure of the gas storage tank according to the present invention.

[0024] Figure 4 This is a schematic diagram of the transmission component structure of the present invention.

[0025] Figure 5 This is a schematic cross-sectional view of the sealing cover structure of the present invention.

[0026] Figure 6 This is a schematic diagram of the flywheel disk structure of the present invention.

[0027] Figure 7 This is a schematic diagram of the synchronization disk structure of the present invention.

[0028] Figure 8 This is a schematic diagram of the tapered tensioning sleeve structure of the present invention.

[0029] Figure 9 This is a schematic diagram of the brake disc structure of the present invention.

[0030] Figure 10 This is a schematic diagram of the stamping component structure of the present invention.

[0031] Figure 11 This is a schematic diagram of the internal structure of the pneumatic motor of the present invention.

[0032] Figure 12 This is a schematic diagram of the upper mold structure of the present invention.

[0033] The attached diagram is labeled as follows: 1. Frame; 2. Air tank; 3. Air supply pipe one; 4. Air valve one; 5. Air supply pipe two; 6. Pneumatic motor; 601. Air inlet one; 602. Exhaust port one; 7. Temporary storage tank; 8. Return air pipe one; 9. Air valve; 10. Return air pipe two; 1001. Air supply branch pipe; 11. Proportional pressure regulating valve; 12. Output shaft; 1301. Synchronous pulley one; 1302. Synchronous belt; 1303. Synchronous pulley two; 14. Drive roller; 15. Sealing cover; 16. Mounting bracket; 1701. Servo motor; 1702. Connecting rod one; 1703. Shift fork; 18. Counterweight; 1801. Limiting post; 19. Flywheel; 1901. Limiting groove one; 20. Synchronous disc; 2001. Limiting groove two; 21. Mounting ring; 22. Conical expansion pin. 23. Tightening sleeve; 2401. Shielding cover; 2402. Electromagnetic coil; 2403. Armature; 2404. Compression spring one; 2405. Pressure head; 26. Flywheel rotor; 27. Flywheel stator; 28. Speed ​​sensor; 29. ​​Brake disc; 2001. Fixed sleeve; 2902. Air inlet two; 2903. Air pressure distribution chamber; 2904. Motion guide chamber; 3001. Slide rod; 3002. Pressing column; 3003. Compression spring two; 31. Brake sleeve; 32. Crankshaft; 3301. Connecting rod two; 3302. Connecting plate; 3303. Connecting rod three; 3304. Slider; 3305. Connecting slide rail; 34. Stamping block; 35. Pressing roller; 36. Guide rod; 37. Upper mold loading plate; 38. Upper mold; 39. Lower mold. Detailed Implementation

[0034] The present application will now be described in further detail with reference to the accompanying drawings. It should be noted that the following specific embodiments are only used to further illustrate the present application and should not be construed as limiting the scope of protection of the present application. Those skilled in the art can make some non-essential improvements and adjustments to the present application based on the above application content.

[0035] Refer to the instruction manual appendix Figures 1 to 12 A high-speed pneumatic punch press includes a frame 1. An air tank 2, an air valve 4, a pneumatic motor 6, a temporary storage tank 7, and an air valve 9 are fixedly connected to the frame 1. The pneumatic motor 6 has an air inlet 601 and an exhaust 602. An air supply pipe 3 is fixedly connected between the air tank 2 and the air valve 4. An air supply pipe 5 is fixedly connected between the air valve 4 and the air inlet 601. An air return pipe 8 is fixedly connected between the temporary storage tank 7 and the air valve 9. An air return pipe 10 is fixedly connected between the air valve 9 and the exhaust 602. A proportional pressure regulating valve 11 is fixedly connected to the air supply pipe 3. An output shaft 12 is fixedly connected to the output end of the pneumatic motor 6. A transmission assembly is mounted on the output shaft 12. The power output end of the transmission assembly is connected to a transmission roller 14. The transmission assembly is used to drive the transmission roller 14 to rotate. A speed sensor 27 is fixedly connected to the transmission roller 14. The speed sensor 27 is used to detect the speed of the transmission roller 14. A mounting frame 16 and a flywheel disk 19 are fixedly connected inside the transmission roller 14. An inertia adjustment assembly is mounted on the mounting frame 16. Several counterweights 18 arranged in a circular array are slidably connected to the flywheel disk 19. The output end of the inertia adjustment assembly is connected to any one of the counterweights 18. The inertia adjustment assembly is used to drive the counterweight 18 to move along a preset direction. A fixed sleeve 29 is fixedly connected to the frame 1. Several braking components are installed on the fixed sleeve 29. The output end of the braking components is connected to a braking module. The braking components reduce speed by driving the flywheel 19 through the braking module.

[0036] It should be noted that frame 1 serves as the overall support foundation for mounting various components within the device. Air tank 2 stores compressed gas, providing a power source for pneumatic motor 6. Pneumatic motor 6, as the power output element, receives compressed gas through inlet 601 to drive its rotor and discharges the gas after work through outlet 602. Temporary storage tank 7 recovers and temporarily stores the gas discharged by pneumatic motor 6 to achieve energy recovery and utilization. Air valves 4 and 9 are used to control the opening and closing of air passages and the air pressure. Specifically, air delivery pipe 3 is used to transport compressed gas, and air delivery pipe 5 is used for… The gas controlled by the first gas valve 4 is sent into the pneumatic motor 6. The first gas return pipe 8 is used to guide the recovered gas into the temporary storage tank 7. The second gas return pipe 10 is used to guide the gas discharged from the pneumatic motor 6 to the gas valve 9. The proportional pressure regulating valve 11 is used to adjust the gas pressure entering the pneumatic motor 6 in real time according to the load, thereby controlling the output power and speed of the pneumatic motor 6. The output shaft 12 transmits the rotational power generated by the pneumatic motor 6 to the transmission assembly, and then to the transmission roller 14 through the transmission assembly. The transmission roller 14 serves as the mounting carrier for the flywheel disk 19 and the mounting bracket 16, driving the components on it to rotate together.

[0037] It is worth noting that the mounting bracket 16 is used to install the inertia adjustment component. The inertia adjustment component adjusts the rotational inertia of the flywheel system by changing the center distance of the counterweight 18 on the flywheel disk 19, thereby adapting to the energy storage requirements under different working conditions. The counterweight 18 consists of several counterweights that are slidably connected to the flywheel disk 19 in a circumferential array. At the same time, a speed sensor 27 is installed on the transmission roller 14 to detect the rotational speed of the transmission roller 14 in real time and feed the speed signal back to the control system, providing an adjustment basis for the inertia adjustment component and the proportional pressure regulating valve 11. The fixed sleeve 29 is used to install the braking components and provide motion guidance and air pressure distribution space for the braking components. There are several braking components installed in the fixed sleeve 29. The output end of the components is connected to a braking module, which is used to decelerate the flywheel 19 according to the control signal.

[0038] Refer to the instruction manual appendix Figure 4 The transmission assembly includes a first synchronous pulley 1301 fixedly connected to the output shaft 12, a synchronous belt 1302 sleeved on one end of the first synchronous pulley 1301, and a second synchronous pulley 1303 sleeved on the other end of the synchronous belt 1302. The second synchronous pulley 1303 is fixedly connected to the transmission roller 14. A sealing cover 15 is fixedly connected to the frame 1. A crankshaft 32 is fixedly connected to the end side of the transmission roller 14. The outer side of the transmission roller 14 is rotatably connected to the sealing cover 15.

[0039] It should be noted that the first synchronous pulley 1301 is used to rotate together with the output shaft 12, transmitting the rotational power output by the pneumatic motor 6 to the synchronous belt 1302. The synchronous belt 1302 realizes the synchronous transmission between the first synchronous pulley 1301 and the second synchronous pulley 1303, ensuring that the two have a constant transmission ratio. At the same time, the second synchronous pulley 1303 drives the transmission roller 14 to rotate synchronously, thereby driving the crankshaft 32 to rotate, realizing precise control of the stamping action, and making the stamped aerospace aluminum alloy forging structure more precise.

[0040] Refer to the instruction manual appendix Figure 6 The inertia adjustment component includes a servo motor 1701 fixedly connected to the mounting bracket 16, a connecting rod 1702 fixedly connected to the output end of the servo motor 1701 at one end, and a shift fork 1703 rotatably connected to the other end of the connecting rod 1702. The shift fork 1703 is fixedly connected to any counterweight 18. The servo motor 1701 is used to drive the connecting rod 1702 to rotate.

[0041] It should be noted that the servo motor 1701, as the power source for inertia adjustment, is used to receive control commands and output precise angular displacement. The connecting rod 1702 rotates synchronously with the output shaft of the servo motor 1701, transmitting the rotational motion of the servo motor 1701 to the shift fork 1703, which drives the shift fork 1703 and the counterweight 18 to move along the radial direction of the flywheel disk 19, thereby changing the moment of inertia of the flywheel disk 19 (the flywheel disk 19 is made of high-strength, high-toughness, and good wear-resistant alloy structural steel). When facing the demand for aviation aluminum alloy forgings of different thicknesses, sizes, and dimensions, different moments of inertia can be used for production adaptation, improving the practicality of the device.

[0042] Refer to the instruction manual appendix Figure 9 A shield 23 is fixedly connected to the end of the flywheel disk 19 away from the mounting bracket 16. A flywheel rotor 25 is fixedly connected to the outside of the shield 23, and a flywheel stator 26 is fixedly connected to the inside of the sealing cover 15. The fixed sleeve 29 is provided with an air pressure distribution chamber 2903 and a motion guide chamber 2904 from the inside to the outside. The braking assembly includes a slide rod 3001 slidably connected in the motion guide chamber 2904, a pressure post 3002 fixedly connected at one end to the slide rod 3001, and a compression spring 3003 fixedly connected between the air inlet 2901 and the slide rod 3001. The braking module includes a brake sleeve 31 fixedly connected to the other end of the pressure post 3002 and a brake disc 28 fixedly connected to the side of the flywheel rotor 25 away from the shield 23.

[0043] It should be noted that the shielding cover 23 is used to install the flywheel rotor 25 and form electromagnetic shielding for it. The flywheel rotor 25 is fixedly connected to the outside of the shielding cover 23 and is positioned opposite to the flywheel stator 26 fixedly connected to the inside of the sealing cover 15. Together, they constitute the flywheel energy storage unit. When the flywheel rotor 25 rotates with the transmission roller 14, it generates relative motion with the flywheel stator 26, converting mechanical energy into electrical energy for storage. The air pressure distribution chamber 2903 is connected to the second air inlet 2901 and the second exhaust 2902, and evenly distributes the compressed gas introduced by the second air inlet 2901 to each motion guide chamber 2904. Each motion guide chamber 2904 has a sliding rod 3001 slidably connected in it. One end of the sliding rod 3001 is fixedly connected to the pressure column 3002, and the other end... The compression spring 3003 is fixedly connected to the other end of the compression spring 3003, which is fixed to the inner wall of the fixed sleeve 29. The pressure column 3002 passes through the fixed sleeve 29 and is fixedly connected to the brake sleeve 31. When the compressed gas enters the air pressure distribution chamber 2903 through the air inlet 2901, the air pressure overcomes the elastic force of the compression spring 3003 and pushes each slide rod 3001 to slide synchronously along the motion guide chamber 2904 toward the brake disc 28. The slide rod 3001 drives the brake sleeve 31 to press against the conical surface of the brake disc 28 through the pressure column 3002 to achieve braking. When the air pressure is released through the exhaust port 2902, the elastic force of the compression spring 3003 pushes the slide rod 3001 and the pressure column 3002 to move in the opposite direction, so that the brake sleeve 31 disengages from the brake disc 28 and releases the brake.

[0044] Refer to the instruction manual appendix Figure 9 The fixed sleeve 29 has an air inlet 2901 and an exhaust 2902. An air supply branch pipe 1001 is fixedly connected between the air inlet 2901 and the return air pipe 10.

[0045] It should be noted that the gas supply branch pipe 1001 is used to divert part of the recovered gas discharged from the exhaust port 602 of the pneumatic motor 6 from the return gas pipe 10 into the air pressure distribution chamber 2903 of the fixed sleeve 29. The pressurized gas discharged from the pneumatic motor 6 is used as the power source of the braking assembly to drive the brake sleeve 31 to press against the brake disc 28 to achieve braking. No additional air source or hydraulic source is required. The exhaust port 2902 is used to discharge the gas in the air pressure distribution chamber 2903 when the brake is released.

[0046] Refer to the instruction manual appendix Figure 6 and Figure 7 The counterweight 18 has limit posts 1801 at both ends. The flywheel 19 has several radially distributed limit grooves 1901. The flywheel 19 is rotatably connected to a synchronous disk 20. The synchronous disk 20 has several curved limit grooves 2001. The limit grooves 2001 and the limit grooves 1901 are arranged in a one-to-one cross configuration. The limit posts 1801 pass through the corresponding limit grooves 1901 and 2001 and are slidably connected to both.

[0047] It should be noted that multiple counterweights 18 are evenly distributed along the circumference of the flywheel 19. Each counterweight 18 has limit posts 1801 fixed at both ends. The flywheel 19 has the same number of limit grooves 1901 as the counterweights 18. Each limit groove 1901 extends radially outward from the center of the flywheel 19. A synchronous disc 20 is concentrically connected to the inner side of the flywheel 19. The synchronous disc 20 has the same number of limit grooves 2001 as the limit grooves 1901, each corresponding to one of them. Each limit groove 2001 extends in an arc shape, ensuring that each limit groove 1901 and its corresponding limit groove 2001 are aligned within the flywheel 19. The counterweights are arranged in a crisscross pattern in the radial direction. Each limit post 1801 passes through its corresponding limit groove 1901 and limit groove 2001 and maintains a sliding fit. When the inertia adjustment component drives one of the counterweights 18 to move radially along the flywheel disk 19, the limit post 1801 on the counterweight 18 drives the synchronous disk 20 to rotate relative to the flywheel disk 19 through the limit groove 2001. The rotating synchronous disk 20 then pushes the other limit posts 1801 to slide synchronously radially along their respective limit grooves 1901 through the remaining limit grooves 2001, thereby achieving equal synchronous radial movement of all counterweights 18 to adjust the overall rotational inertia of the flywheel disk 19.

[0048] Refer to the instruction manual appendix Figure 8 A mounting ring 21 is fixedly connected to the synchronous disk 20, a tapered tensioning sleeve 22 is installed inside the mounting ring 21, and a locking component is installed inside the shielding cover 23; The locking assembly includes an electromagnetic coil 2401 fixedly connected inside the shielding cover 23, an armature 2402 slidably connected inside the shielding cover 23, a pressure head 2404 fixedly connected to the armature 2402, and a compression spring 2403 fixedly connected between the pressure head 2404 and the shielding cover 23. The armature 2402 presses against the conical tension sleeve 22 under the elastic force of the compression spring 2403. When the electromagnetic coil 2401 is energized, the electromagnetic force generated can overcome the elastic force of the compression spring 2403 and cause the armature 2402 to disengage from the conical tension sleeve 22.

[0049] It should be noted that the mounting ring 21 rotates together with the synchronous disc 20. The conical tension sleeve 22 is installed inside the mounting ring 21, and its inner hole has a conical surface structure, which is used to cooperate with the pressure head 2404 of the locking assembly to achieve locking. The electromagnetic coil 2401 is installed in the inner wall of the shielding cover 23. The armature 2402 is slidably installed in the shielding cover 23 and located inside the electromagnetic coil 2401. The pressure head 2404 is fixedly connected to one end of the armature 2402 near the conical tension sleeve 22, and its front end is conical, matching the inner conical surface of the conical tension sleeve 22. The compression spring 2403 is sleeved on the pressure head 2404 and pressed between the stepped surface of the pressure head 2404 and the inner wall of the shielding cover 23. When the electromagnetic coil 2401 breaks... When energized, the spring force of the compression spring 2403 pushes the pressure head 2404 and armature 2402 toward the conical tension sleeve 22, so that the conical surface of the pressure head 2404 presses against the inner conical surface of the conical tension sleeve 22. Through the friction of the conical surface, the synchronous disc 20 is locked relative to the flywheel disc 19, preventing the counterweight 18 from loosening due to centrifugal force or vibration during operation. When the electromagnetic coil 2401 is energized, the electromagnetic force generated by the electromagnetic coil 2401 attracts the armature 2402 to overcome the spring force of the compression spring 2403 and move away from the conical tension sleeve 22, so that the pressure head 2404 disengages from the conical tension sleeve 22 and releases the lock on the synchronous disc 20. At this time, the inertia adjustment component can freely adjust the position of the counterweight 18.

[0050] Refer to the instruction manual appendix Figure 10 and Figure 11 A stamping assembly is mounted on the crankshaft 32. The power output end of the stamping assembly is connected to a stamping block 34. The stamping assembly is used to drive the stamping block 34 to perform rapid reciprocating motion in the vertical direction. Several pressing rollers 35 are fixedly connected to the stamping block 34. An upper mold loading plate 37 is fixedly connected to the bottom of the stamping block 34. An upper mold 38 is fixedly connected to the bottom of the upper mold loading plate 37. A lower mold 39 is fixedly connected to the frame 1.

[0051] It should be noted that the crankshaft 32 rotates together with the transmission roller 14. The stamping assembly is connected between the crankshaft 32 and the stamping block 34, which is used to convert the continuous rotational motion of the crankshaft 32 into the rapid reciprocating motion of the stamping block 34 in the vertical direction. The stamping block 34 has a trapezoidal plate structure, and its slope surface is connected to the power output end of the stamping assembly. Its bottom is fixedly connected to the upper mold loading plate 37. There are several pressing rollers 35 on the slope of the stamping block 34, which are used to guide and limit the reciprocating motion of the stamping block 34, ensuring the precise alignment of the upper mold 38 and the lower mold 39. Plate 37 is fixedly connected to the bottom of stamping block 34 for mounting and fixing upper mold 38. Upper mold 38 is fixedly connected to the bottom of upper mold loading plate 37 and moves up and down with stamping block 34. Lower mold 39 is fixedly connected to frame 1 and located directly below upper mold 38. Upper mold 38 and lower mold 39 cooperate with each other. When crankshaft 32 drives stamping assembly to drive stamping block 34 down rapidly, upper mold 38 and lower mold 39 close to complete stamping of stamped workpiece. When stamping block 34 moves up, upper mold 38 and lower mold 39 separate to remove stamped workpiece.

[0052] Refer to the instruction manual appendix Figure 10 The stamping assembly includes a second connecting rod 3301 rotatably connected to a crankshaft 32 at one end, a connecting plate 3302 rotatably connected to the other end of the second connecting rod 3301, two third connecting rods 3303 rotatably connected to the connecting plate 3302 at one end, a slider 3304 rotatably connected to the other end of the third connecting rod 3303, and a connecting slide rail 3305 fixedly connected to the bottom of the slider 3304. Two guide rods 36 are fixedly connected to the frame 1. The guide rods 36 and the slider 3304 are slidably connected. The connecting slide rail 3305 and the pressing roller 35 are slidably connected.

[0053] It should be noted that connecting rod 3301 swings with the rotation of crankshaft 32, causing connecting plate 3302 to slide up and down (connecting plate 3302 is slidably connected to the top of frame 1). The two sides of connecting plate 3302 are rotatably connected to two connecting rods 3303, which in turn are rotatably connected to two sliders 3304. Each slider 3304 is slidably mounted on a corresponding guide rod 36. The guide rod 36 is fixedly connected to frame 1 and extends horizontally. Connecting slide rail 3305 is fixedly connected to the bottom of the two sliders 3304 and moves left and right with the sliders 3304. The bottom of connecting slide rail 3305 has an opening... The stamping block 34 has a sliding groove that slides in cooperation with the pressing roller 35 on the stamping block 34. When the crankshaft 32 rotates, the connecting rod 3301 drives the connecting plate 3302 to move. The connecting plate 3302 drives the two sliders 3304 to move synchronously in the horizontal direction along the guide rod 36 through the two connecting rods 3303. The sliders 3304 drive the connecting slide rail 3305 to move left and right. The connecting slide rail 3305 drives the stamping block 34 to move up and down through the pressing roller 35, thereby realizing the synchronous drive of the two sliders, improving the smoothness of the movement of the stamping block 34 and its resistance to eccentric load, resulting in higher quality aerospace aluminum alloy forgings and better working performance.

[0054] Refer to the instruction manual appendix Figures 1 to 12 In this embodiment, the present invention provides a control method for a high-speed pneumatic punch press, which employs a high-speed pneumatic punch press as described above, and includes the following steps: S1: Open the air valve 4, and the compressed gas in the air tank 2 enters the air inlet 601 of the pneumatic motor 6 through the air delivery pipe 3, the proportional pressure regulating valve 11 and the air delivery pipe 5, driving the pneumatic motor 6 to start. The pneumatic motor 6 drives the transmission roller 14 and the crankshaft 32 to rotate through the output shaft 12 and the transmission assembly. S2: The crankshaft 32 drives the stamping block 34 to reciprocate rapidly in the vertical direction through the stamping assembly, so that the upper die 38 and the lower die 39 cooperate to stamp the workpiece; S3: The transmission roller 14 drives the flywheel rotor 25 to rotate. The relative motion between the flywheel rotor 25 and the flywheel stator 26 generates and stores electrical energy. The gas discharged from the pneumatic motor 6 enters the temporary storage tank 7 for recovery through the exhaust port 602, the return gas pipe 10, the gas valve 9 and the return gas pipe 8. S4: The speed sensor 27 detects the speed of the transmission roller 14 in real time. According to the workpiece thickness and load, the intake pressure is adjusted by the proportional pressure regulating valve 11. At the same time, the inertia adjustment component drives the counterweight 18 to move radially, adjusts the rotational inertia of the flywheel 19, and dynamically adjusts the amount of recovered energy. S5: After the inertia adjustment is completed, the locking component is activated to lock the synchronization disk 20 to prevent the counterweight 18 from loosening. S6: After stamping is completed, the gas recovered in the temporary storage tank 7 is used to enter the pneumatic motor 6 or the braking assembly through the air valve 9 and the return air pipeline 10 to assist the stamping block 34 to return. At the same time, when an emergency stop is required, the braking assembly can be used to drive the brake sleeve 31 to decelerate and brake the brake disc 28.

[0055] It should be noted that in the S1 inflation and start-up phase, the proportional pressure regulating valve 11 adjusts the intake pressure according to the preset initial parameters, so that the pneumatic motor 6 can start smoothly to adapt to the speed of the current stamping task and avoid starting shock. In the S2 stamping phase, for each revolution of the crankshaft 32, the stamping block 34 completes one up-and-down reciprocating motion, and the upper die 38 and lower die 39 complete one stamping action. The clamping roller 35 rolls along the connecting slide rail 3305 to ensure the vertical accuracy of the stamping block 34. In the S3 energy recovery phase, the flywheel rotor 25 and the flywheel stator 26 form a flywheel energy storage system. The unit converts the mechanical energy of the rotating drive roller 14 into electrical energy for storage. Simultaneously, the temporary storage tank 7 recovers the pressurized gas discharged from the pneumatic motor 6, achieving dual recovery of electrical and pneumatic energy. During the S4 inertial adjustment phase, the speed sensor 27 monitors the speed change of the drive roller 14 in real time. When the speed drop exceeds a set threshold (corresponding to heavy-load conditions), the control system increases the intake pressure through the proportional pressure regulating valve 11 to compensate for the power loss. Simultaneously, it controls the servo motor 1701 of the inertial adjustment component to rotate, driving the counterweight 18 radially inward through the connecting rod 1702 and the shift fork 1703. The movement reduces the moment of inertia of the flywheel disk 19 to improve response speed. When the detected speed increase exceeds the set threshold (corresponding to light load conditions), the counterweight block 18 is controlled to move radially outward, increasing the moment of inertia to store more energy for subsequent stamping release. In the S5 locking stage, after the inertia adjustment is completed, the electromagnetic coil 2401 is de-energized, and the compression spring 2403 pushes the armature 2402 and the pressure head 2404 to press against the conical tension sleeve 22, locking the synchronous disk 20 and the flywheel disk 19 to ensure that the counterweight block 18 will not shift its position under the action of high-speed centrifugal force. During the return and braking phase, the compressed gas recovered in the temporary storage tank 7 enters the pneumatic motor 6 through the gas valve 9 and the return gas pipeline 2 10, which assists in driving the output shaft 12 to reverse or provide return power, thus realizing energy reuse. When an emergency stop is required, the gas supply branch pipe 1001 introduces the gas in the return gas pipeline 2 10 into the air pressure distribution chamber 2903 of the fixed sleeve 29, which pushes the slide rod 3001 and the pressure column 3002 to drive the brake sleeve 31 to press against the conical surface of the brake disc 28 to generate braking torque, so that the transmission roller 14 and the crankshaft 32 stop rotating quickly, ensuring the safety of the equipment and operators.

[0056] The above embodiments merely illustrate several implementation methods of the present invention, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the present invention. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these all fall within the protection scope of the present invention.

Claims

1. A high-speed pneumatic punch press, characterized in that: The equipment includes a frame (1), on which a gas storage tank (2), a first gas valve (4), a pneumatic motor (6), a temporary storage tank (7), and a gas valve (9) are fixedly connected. The pneumatic motor (6) has an air inlet (601) and an exhaust port (602). A first gas supply pipe (3) is fixedly connected between the gas storage tank (2) and the first gas valve (4). A second gas supply pipe (5) is fixedly connected between the first gas valve (4) and the first air inlet (601). A first return gas pipe (8) is fixedly connected between the temporary storage tank (7) and the first gas valve (9). A second return gas pipe (10) is fixedly connected between the first gas valve (9) and the first exhaust port (602). A proportional pressure regulating valve (11) is fixedly connected to the first gas supply pipe (3). An output shaft (12) is fixedly connected to the output end of a pneumatic motor (6). A transmission assembly is installed on the output shaft (12). A transmission roller (14) is connected to the power output end of the transmission assembly. The transmission assembly is used to drive the transmission roller (14) to rotate. A speed sensor (27) is fixedly connected to the transmission roller (14). The speed sensor (27) is used to detect the speed of the transmission roller (14). A mounting frame (16) and a flywheel disk (19) are fixedly connected inside the transmission roller (14). An inertia adjustment assembly is installed on the mounting frame (16). Several counterweights (18) arranged in a circular array are slidably connected on the flywheel disk (19). The output end of the inertia adjustment assembly is connected to any counterweight (18). The inertia adjustment assembly is used to drive the counterweight (18) to move along a preset direction. A fixed sleeve (29) is fixedly connected to the frame (1). Several braking components are installed on the fixed sleeve (29). The output end of the braking component is connected to a braking module. The braking component drives the flywheel (19) to decelerate through the braking module.

2. A high-speed pneumatic punch press according to claim 1, characterized in that: The transmission assembly includes a first synchronous pulley (1301) fixedly connected to the output shaft (12), a synchronous belt (1302) with one end sleeved on the first synchronous pulley (1301), and a second synchronous pulley (1303) sleeved on the other end of the synchronous belt (1302). The second synchronous pulley (1303) and the transmission roller (14) are fixedly connected. A sealing cover (15) is fixedly connected to the frame (1). A crankshaft (32) is fixedly connected to the end side of the transmission roller (14). The outer side of the transmission roller (14) and the sealing cover (15) are rotatably connected.

3. A high-speed pneumatic punch press according to claim 2, characterized in that: The inertia adjustment assembly includes a servo motor (1701) fixedly connected to the mounting bracket (16), a connecting rod (1702) fixedly connected at one end to the output end of the servo motor (1701), and a shift fork (1703) rotatably connected to the other end of the connecting rod (1702). The shift fork (1703) is fixedly connected to any counterweight (18), and the servo motor (1701) is used to drive the connecting rod (1702) to rotate.

4. A high-speed pneumatic punch press according to claim 3, characterized in that: A shield (23) is fixedly connected to the end of the flywheel disc (19) away from the mounting bracket (16). A flywheel rotor (25) is fixedly connected to the outside of the shield (23), and a flywheel stator (26) is fixedly connected to the inside of the sealing cover (15). The fixed sleeve (29) is provided with an air pressure distribution chamber (2903) and a motion guide chamber (2904) from the inside to the outside. The braking assembly includes a slide rod (3001) slidably connected in the motion guide chamber (2904), a pressure column (3002) fixedly connected at one end to the slide rod (3001), and a compression spring (3003) fixedly connected between the air inlet (2901) and the slide rod (3001). The braking module includes a brake sleeve (31) fixedly connected to the other end of the pressure post (3002) and a brake disc (28) fixedly connected to the side of the flywheel rotor (25) away from the shield (23).

5. A high-speed pneumatic punch press according to claim 4, characterized in that: The fixed sleeve (29) is provided with an air inlet hole 2 (2901) and an exhaust hole 2 (2902). An air supply branch pipe (1001) is fixedly connected between the air inlet hole 2 (2901) and the return air pipe 2 (10).

6. A high-speed pneumatic punch press according to claim 5, characterized in that: The counterweight (18) has limit posts (1801) at both ends. The flywheel (19) has several radially distributed limit grooves (1901). The flywheel (19) is rotatably connected to a synchronous disk (20). The synchronous disk (20) has several curved limit grooves (2001). Limit grooves (2001) and limit grooves (1901) are arranged in a one-to-one cross configuration. The limit posts (1801) pass through the corresponding limit grooves (1901) and limit grooves (2001) and are slidably connected to both.

7. A high-speed pneumatic punch press according to claim 6, characterized in that: A mounting ring (21) is fixedly connected to the synchronization disk (20), a tapered tensioning sleeve (22) is installed inside the mounting ring (21), and a locking component is installed inside the shielding cover (23); The locking assembly includes an electromagnetic coil (2401) fixedly connected inside the shield (23), an armature (2402) slidably connected inside the shield (23), a pressure head (2404) fixedly connected to the armature (2402), and a compression spring (2403) fixedly connected between the pressure head (2404) and the shield (23). The armature (2402) presses against the conical tension sleeve (22) under the elastic force of the compression spring (2403). When the electromagnetic coil (2401) is energized, the electromagnetic force generated can overcome the elastic force of the compression spring (2403) and cause the armature (2402) to disengage from the conical tension sleeve (22).

8. A high-speed pneumatic punch press according to claim 7, characterized in that: A stamping assembly is installed on the crankshaft (32). The power output end of the stamping assembly is connected to a stamping block (34). The stamping assembly is used to drive the stamping block (34) to perform rapid reciprocating motion in the vertical direction. Several pressing rollers (35) are fixedly connected on the stamping block (34). An upper mold loading plate (37) is fixedly connected to the bottom of the stamping block (34). An upper mold (38) is fixedly connected to the bottom of the upper mold loading plate (37). A lower mold (39) is fixedly connected to the frame (1).

9. A high-speed pneumatic punch press according to claim 8, characterized in that: The stamping assembly includes a second connecting rod (3301) rotatably connected to a crankshaft (32) at one end, a connecting plate (3302) rotatably connected to the other end of the second connecting rod (3301), two third connecting rods (3303) rotatably connected to the connecting plate (3302) at one end, a slider (3304) rotatably connected to the other end of the third connecting rod (3303), and a connecting slide rail (3305) fixedly connected to the bottom of the slider (3304). Two guide rods (36) are fixedly connected to the frame (1). The guide rods (36) and the slider (3304) are slidably connected. The connecting slide rail (3305) and the pressing roller (35) are slidably connected.

10. A control method for a high-speed pneumatic punch press, characterized in that: The high-speed pneumatic punch press according to claim 9 comprises the following steps: S1: Open the air valve (4), and the compressed gas in the air tank (2) enters the air inlet (601) of the pneumatic motor (6) through the air delivery pipe (3), the proportional pressure regulating valve (11) and the air delivery pipe (5), driving the pneumatic motor (6) to start. The pneumatic motor (6) drives the transmission roller (14) and the crankshaft (32) to rotate through the output shaft (12) and the transmission assembly. S2: The crankshaft (32) drives the stamping block (34) to move rapidly back and forth in the vertical direction through the stamping assembly, so that the upper mold (38) and the lower mold (39) cooperate to stamp the workpiece; S3: The transmission roller (14) drives the flywheel rotor (25) to rotate. The relative motion between the flywheel rotor (25) and the flywheel stator (26) generates and stores electrical energy. The gas discharged by the pneumatic motor (6) enters the temporary storage tank (7) for recovery through the exhaust port one (602), the return gas pipe two (10), the gas valve (9) and the return gas pipe one (8). S4: The speed sensor (27) detects the speed of the transmission roller (14) in real time. According to the workpiece thickness and load, the intake pressure is adjusted by the proportional pressure regulating valve (11). At the same time, the inertia adjustment component drives the counterweight (18) to move radially, adjusts the rotational inertia of the flywheel (19), and dynamically adjusts the amount of recovered energy. S5: After the inertia adjustment is completed, the locking component is activated to lock the synchronization disk (20) to prevent the counterweight (18) from loosening; S6: After the stamping is completed, the gas recovered in the temporary storage tank (7) is used to enter the pneumatic motor (6) or the brake assembly through the gas valve (9) and the return gas pipeline (10) to assist the stamping block (34) to return. At the same time, when an emergency stop is required, the brake assembly can be used to drive the brake sleeve (31) to decelerate and brake the brake disc (28).

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