Energy-saving precision mechanical stamping device

Abstract

The utility model belongs to the technical field of machining, disclose an energy -saving precision machinery punch press device, including punch press frame, be equipped with the punch press die that constitutes by upper die and lower die on the punch press frame, be installed on the punch press frame for driving the upper die execution punch press action's press main machine, be equipped with the lower die holder for installing lower die on the punch press frame, the inside of lower die holder is equipped with hydraulic - pneumatic composite energy - recovery buffer mechanism, hydraulic - pneumatic composite energy - recovery buffer mechanism includes the energy - recovery assembly for receiving and converting the energy of press main machine slider downlink in the punch press process and the energy storage assembly that communicates with energy - recovery assembly. The utility model discloses a hydraulic - pneumatic composite energy - recovery buffer mechanism can effectively recover and store the kinetic energy of slider downlink in the punch press process, release utilization when the punch press return, reduce energy consumption, improve the energy utilization ratio, reduce equipment operating cost simultaneously.

Description

Technical Field

[0001] This utility model relates to the field of machining technology, and in particular to an energy-saving precision mechanical stamping device. Background Technology

[0002] In the field of machining technology, stamping devices are widely used in sheet metal forming, punching, and cutting processes. In traditional mechanical stamping devices, a large amount of kinetic energy is generated during the downward movement of the press slide. This energy is typically dissipated as heat, vibration, or noise at the end of the stamping process, resulting in energy waste. Furthermore, the return stroke requires additional energy to drive the slide upward, further increasing energy consumption. While some existing stamping devices employ simple buffer mechanisms to mitigate impact, they lack effective energy recovery and reuse mechanisms, resulting in low energy efficiency. Summary of the Invention

[0003] To overcome the technical defects of the existing technology, this utility model provides an energy-saving precision mechanical stamping device.

[0004] The technical solution adopted by this utility model is: an energy-saving precision mechanical stamping device, including a stamping frame, on which a stamping die composed of an upper die and a lower die is provided, and a press host for driving the upper die to perform stamping action is installed on the stamping frame, and a lower die seat for installing the lower die is provided on the stamping frame, and a hydraulic-pneumatic composite energy recovery buffer mechanism is provided inside the lower die seat; the hydraulic-pneumatic composite energy recovery buffer mechanism includes an energy recovery component for receiving and converting the downward kinetic energy of the press host slide during the stamping process, an energy storage component connected to the energy recovery component, and an energy reuse component connected to the energy storage component. The energy storage component is used to store the converted energy, and the energy reuse component is used to release the stored energy during the stamping return stroke.

[0005] Preferably, the energy recovery component includes at least one main hydraulic cylinder disposed in the lower mold base. The piston rod of the main hydraulic cylinder is fixedly connected to a pressure ring disposed on the lower mold. When the upper mold moves downward to press the pressure ring, it forces the rodless chamber of the main hydraulic cylinder to discharge hydraulic oil.

[0006] Preferably, the energy storage component includes a hydraulic accumulator and a high-pressure nitrogen cylinder. The oil port of the hydraulic accumulator is connected to the rodless chamber of the main hydraulic cylinder through a first control valve, and the gas port of the high-pressure nitrogen cylinder is connected to the gas chamber of the hydraulic accumulator through a high-pressure gas pipeline. The high-pressure nitrogen cylinder is used to store the energy transferred by the hydraulic oil by compressing nitrogen.

[0007] Preferably, the energy reuse component includes at least one auxiliary hydraulic cylinder, the cylinder body of which is fixed inside the lower mold base, the piston rod of which is fixedly connected to the pressure ring, and the rodless chamber of which is connected to the oil port of the hydraulic accumulator through a second control valve, so that the stored high-pressure oil can drive the piston rod of the auxiliary hydraulic cylinder to push out.

[0008] Preferably, the device further includes a PLC controller, a pressure sensor for detecting pressure, and a displacement sensor for detecting the position of the pressure ring. The signal output terminals of the pressure sensor and the displacement sensor are connected to the signal input terminal of the PLC controller, and the control output terminal of the PLC controller is connected to the first control valve and the second control valve.

[0009] Preferably, the first control valve and the second control valve are electro-hydraulic proportional valves or servo valves.

[0010] The beneficial effects of this utility model are: By setting up a hydraulic-pneumatic composite energy recovery buffer mechanism, the kinetic energy of the slide block during the stamping process can be effectively recovered and stored, and released and utilized during the stamping return stroke, thereby reducing energy consumption, improving energy utilization, and reducing equipment operating costs. Attached Figure Description

[0011] One or more embodiments are illustrated by way of example with reference numerals in the accompanying drawings. These illustrations do not constitute a limitation on the embodiments. Elements with the same reference numerals in the drawings are denoted as similar elements. Unless otherwise stated, the figures in the drawings are not to be limited by scale.

[0012] Figure 1 This is a schematic diagram of the structure of an energy-saving precision mechanical stamping device according to the present invention; Figure 2 For the present utility model Figure 1 Enlarged schematic diagram of the hydraulic-pneumatic composite energy recovery buffer mechanism at point A.

[0013] Explanation of reference numerals in the attached figures: 1. Press frame; 2. Upper die; 3. Lower die; 4. Press machine main unit; 5. Lower die base; 6. Hydraulic-pneumatic composite energy recovery buffer mechanism; 7. Energy recovery component; 8. Energy storage component; 9. Energy reuse component; 10. Main hydraulic cylinder; 11. Pressure ring; 12. Hydraulic accumulator; 13. High-pressure nitrogen cylinder; 14. First control valve; 15. Auxiliary hydraulic cylinder; 16. Second control valve; 17. PLC controller; 18. Pressure sensor; 19. Displacement sensor. Detailed Implementation

[0014] To make the objectives, technical solutions, and advantages of this utility model clearer, the various embodiments of this utility model will be described in detail below with reference to the accompanying drawings. However, those skilled in the art will understand that many technical details have been provided in the various embodiments of this utility model to facilitate a better understanding of this application. However, the technical solutions claimed in the claims of this application can be implemented even without these technical details and with various variations and modifications based on the following embodiments.

[0015] like Figure 1 and Figure 2 As shown, this embodiment provides an energy-saving precision mechanical stamping device, including a stamping frame 1. The stamping frame 1 is equipped with a stamping die consisting of an upper die 2 and a lower die 3. A press host 4 for driving the upper die 2 to perform stamping actions is mounted on the stamping frame 1. A lower die base 5 for mounting the lower die 3 is provided on the stamping frame 1. A hydraulic-pneumatic composite energy recovery buffer mechanism 6 is provided inside the lower die base 5. The hydraulic-pneumatic composite energy recovery buffer mechanism 6 includes an energy recovery component 7 for receiving and converting the downward kinetic energy of the press host 4's slide during the stamping process, an energy storage component 8 connected to the energy recovery component 7, and an energy reuse component 9 connected to the energy storage component 8. The energy storage component 8 is used for... The energy recovery component 9 stores the converted energy and releases the stored energy during the stamping return stroke. During the stamping process, when the press host 4 drives the upper die 2 downward, the energy recovery component 7 receives and converts the downward kinetic energy of the press host 4 slide. The converted energy is sent to the energy storage component 8 for storage. When the stamping returns, the energy recovery component 9 releases the energy from the energy storage component 8 to assist in lifting the upper die 2 or performing other actions, thereby reducing the load on the press host 4. By setting the hydraulic-pneumatic composite energy recovery buffer mechanism 6, the kinetic energy of the slide downward during the stamping process can be effectively recovered and stored, and released and utilized during the stamping return stroke, reducing energy consumption, improving energy utilization efficiency, and reducing equipment operating costs.

[0016] The energy recovery component 7 includes at least one main hydraulic cylinder 10 disposed in the lower die base 5. The piston rod of the main hydraulic cylinder 10 is fixedly connected to a pressure ring 11 disposed on the lower die 3. When the upper die 2 moves downward to press against the pressure ring 11, it forces the rodless chamber of the main hydraulic cylinder 10 to discharge hydraulic oil. When the upper die 2 moves downward to press against the pressure ring 11, the pressure ring 11 moves downward, pushing the piston rod of the main hydraulic cylinder 10, reducing the volume of the rodless chamber of the main hydraulic cylinder 10, and discharging hydraulic oil. The discharged hydraulic oil flows through a pipeline to the energy storage component 8, completing the conversion of mechanical energy into hydraulic energy. The mechanical energy of the upper die 2 moving downward is directly converted into hydraulic energy, achieving efficient energy recovery. The structure is simple and reliable, and it is easy to integrate into existing stamping devices.

[0017] The energy storage component 8 includes a hydraulic accumulator 12 and a high-pressure nitrogen cylinder 13. The oil port of the hydraulic accumulator 12 is connected to the rodless chamber of the main hydraulic cylinder 10 through a first control valve 14. The gas port of the high-pressure nitrogen cylinder 13 is connected to the gas chamber of the hydraulic accumulator 12 through a high-pressure gas pipeline. The high-pressure nitrogen cylinder 13 is used to store the energy transferred by the hydraulic oil by compressing nitrogen. The hydraulic oil discharged from the main hydraulic cylinder 10 enters the hydraulic accumulator 12 through the first control valve 14, compressing the nitrogen gas chamber inside the hydraulic accumulator 12 and converting the hydraulic energy into gas internal energy for storage. The high-pressure nitrogen cylinder 13 provides initial high-pressure nitrogen to enhance the energy storage capacity and stability.

[0018] The energy reuse component 9 includes at least one auxiliary hydraulic cylinder 15. The cylinder body of the auxiliary hydraulic cylinder 15 is fixed inside the lower die base 5. The piston rod of the auxiliary hydraulic cylinder 15 is fixedly connected to the pressure ring 11. The rodless chamber of the auxiliary hydraulic cylinder 15 is connected to the oil port of the hydraulic accumulator 12 through the second control valve 16, so that the stored high-pressure oil can drive the piston rod of the auxiliary hydraulic cylinder 15 to push out. When the stamping return stroke begins, the second control valve 16 opens, and the high-pressure oil in the hydraulic accumulator 12 enters the rodless chamber of the auxiliary hydraulic cylinder 15 through the second control valve 16, pushing the piston rod out, thereby driving the pressure ring 11 to move upward and assisting the upper die 2 in the return stroke.

[0019] It also includes a PLC controller 17, a pressure sensor 18 for detecting pressure, and a displacement sensor 19 for detecting the position of the pressure ring 11. The signal output terminals of the pressure sensor 18 and the displacement sensor 19 are connected to the signal input terminal of the PLC controller 17. The control output terminal of the PLC controller 17 is connected to the first control valve 14 and the second control valve 16. The pressure sensor 18 detects the hydraulic system pressure in real time, and the displacement sensor 19 monitors the position of the pressure ring 11. The signal is transmitted to the PLC controller 17. The PLC controller 17 controls the opening and closing timing and opening degree of the first control valve 14 and the second control valve 16 according to a preset program, realizing precise automation of the energy recovery and reuse process, improving system stability and energy efficiency, and reducing manual intervention. When the pressure detected by the pressure sensor 18 reaches the preset value and the displacement sensor 19 detects that the pressure ring 11 is at the lower dead center, the first control valve 14 is controlled to close to stop energy recovery, and the second control valve 16 is controlled to open to release the stored energy at the beginning of the stamping return stroke.

[0020] The first control valve 14 and the second control valve 16 are electro-hydraulic proportional valves or servo valves, which can achieve precise regulation of flow and pressure, improve system response speed and control accuracy, and further optimize energy management.

[0021] Furthermore, any content not described in detail in this specification is existing technology known to those skilled in the art.

[0022] Those skilled in the art will understand that the above embodiments are specific examples of implementing the present invention, and in practical applications, various changes can be made to them in form and detail without departing from the spirit and scope of the present invention.

Claims

1. An energy-saving precision mechanical stamping device, comprising a stamping frame (1), wherein a stamping die composed of an upper die (2) and a lower die (3) is provided on the stamping frame (1), and a press host (4) for driving the upper die (2) to perform stamping action is installed on the stamping frame (1), characterized in that: The stamping frame (1) is provided with a lower die base (5) for installing the lower die (3), and the lower die base (5) is provided with a hydraulic-pneumatic composite energy recovery buffer mechanism (6). The hydraulic-pneumatic composite energy recovery buffer mechanism (6) includes an energy recovery component (7) for receiving and converting the downward motion energy of the press machine host (4) slide during the stamping process, an energy storage component (8) connected to the energy recovery component (7), and an energy reuse component (9) connected to the energy storage component (8). The energy storage component (8) is used to store the converted energy, and the energy reuse component (9) is used to release the stored energy during the stamping return stroke.

2. The energy-saving precision mechanical stamping device according to claim 1, characterized in that: The energy recovery component (7) includes at least one main hydraulic cylinder (10) disposed in the lower mold base (5). The piston rod of the main hydraulic cylinder (10) is fixedly connected to the pressure ring (11) disposed on the lower mold (3). When the upper mold (2) moves down to press the pressure ring (11), it forces the rodless chamber of the main hydraulic cylinder (10) to discharge hydraulic oil.

3. The energy-saving precision mechanical stamping device according to claim 1, characterized in that: The energy storage component (8) includes a hydraulic accumulator (12) and a high-pressure nitrogen cylinder (13). The oil port of the hydraulic accumulator (12) is connected to the rodless chamber of the main hydraulic cylinder (10) through a first control valve (14). The gas port of the high-pressure nitrogen cylinder (13) is connected to the gas chamber of the hydraulic accumulator (12) through a high-pressure gas pipeline. The high-pressure nitrogen cylinder (13) is used to store the energy transferred by the hydraulic oil by compressing nitrogen.

4. The energy-saving precision mechanical stamping device according to claim 3, characterized in that: The energy reuse assembly (9) includes at least one auxiliary hydraulic cylinder (15). The cylinder body of the auxiliary hydraulic cylinder (15) is fixed inside the lower mold base (5). The piston rod of the auxiliary hydraulic cylinder (15) is fixedly connected to the pressure ring (11). The rodless chamber of the auxiliary hydraulic cylinder (15) is connected to the oil port of the hydraulic accumulator (12) through the second control valve (16), so that the stored high-pressure oil can drive the piston rod of the auxiliary hydraulic cylinder (15) to push out.

5. The energy-saving precision mechanical stamping device according to claim 4, characterized in that: It also includes a PLC controller (17), a pressure sensor (18) for detecting pressure and a displacement sensor (19) for detecting the position of the pressure ring (11). The signal output terminals of the pressure sensor (18) and the displacement sensor (19) are connected to the signal input terminal of the PLC controller (17). The control output terminal of the PLC controller (17) is connected to the first control valve (14) and the second control valve (16).

6. The energy-saving precision mechanical stamping device according to claim 5, characterized in that: The first control valve (14) and the second control valve (16) are electro-hydraulic proportional valves or servo valves.

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