Stamping equipment facilitating material taking in automobile hinge machining

Abstract

The present application belongs to the technical field of stamping, especially to a stamping equipment with convenient material taking for automobile hinge processing, comprising a base, a rack fixedly connected to the top of the base, a sliding block slidingly connected to the rack, a stamping head fixedly connected to the sliding block, an upper die fixedly connected to the bottom end of the stamping head, a motor fixedly connected to the top end of the rack, a screw rod rotatably connected to the rack and connected to the output shaft of the motor, the screw rod being threadedly connected to the sliding block, a die table fixedly connected to the rack below the upper die, a lower die arranged in the groove at the top of the die table, and a pressure acquisition module and a current acquisition module. In the present application, the control module generates a pressure fluctuation coefficient, a current fluctuation coefficient and an evaluation coefficient. By comparing the evaluation coefficient with a preset reference threshold value, the control module can accurately judge the stamping state, dynamically adjust the speed of the stamping head and the torque of the motor according to different situations, and ensure that the stamping process is always in the best state.

Description

Technical Field

[0001] The present invention relates to the field of stamping technology, in particular to a stamping device for convenient material extraction in automobile hinge processing. Background Art

[0002] Stamping is a forming process that uses a press and a die to apply external force to plates, strips, pipes and profiles to cause them to undergo plastic deformation or separation, thereby obtaining stamped parts of the desired shape and size. Stamping and forging are both plastic processing, collectively known as forging. The blanks for stamping are mainly hot-rolled and cold-rolled steel plates and strips.

[0003] The stamping processes required in the chain manufacturing process mainly include bending, trimming and punching, curling, and cutting. Among them, bending is to complete the stamping process of sheet blanks, bars, pipes and profiles with a certain curvature, angle and shape. The stamping process needs to adopt a buffering (slow stamping) method. Existing stamping equipment generally uses springs to achieve the buffering effect, but the accuracy of the spring to achieve buffering is limited, and it is impossible to well control the buffering force at any stage. Therefore, corresponding improvements are made to address this problem. Summary of the Invention

[0004] Based on the technical problems existing in the prior art, the present invention proposes a stamping device for automobile hinge processing that is convenient for material removal.

[0005] The present invention proposes a stamping device for automobile hinge processing that is convenient for material removal, comprising a base, a table fixedly connected to the top of the base, a slider slidably connected to the table, a punching head fixedly connected to the slider, an upper mold fixedly connected to the bottom end of the punching head, a motor fixedly connected to the top of the table, a screw connected to the table for rotation via an output shaft of the motor, a screw threadedly connected to the slider, a die table located below the upper mold fixedly connected to the table, a lower mold arranged in a groove at the top of the die table, and further comprising: a pressure acquisition module for real-time monitoring of dynamic pressure changes during the stamping process and generating a pressure fluctuation coefficient through a control module; a current acquisition module Block, used to obtain the motor load current in real time, and generate the current fluctuation coefficient through the control module; the hinge raw material to be stamped is placed on the lower die in the groove, and then the screw is driven to rotate by the motor output shaft, and the slider, punch head and upper die are driven downward by the screw to stamp the raw material on the lower die. During this period, the control module conducts a comprehensive analysis of the generated pressure fluctuation coefficient and current fluctuation coefficient, generates an evaluation coefficient, and determines whether the current stamping state of the hinge meets the normal stamping requirements of the equipment. The evaluation coefficient is compared with the pre-set evaluation coefficient reference threshold, and the stamping state of the hinge is controlled according to the comparison result.

[0006] Preferably, the pressure acquisition module is installed at the position where the punch head and the upper die are connected, the current acquisition module is integrated and installed on the motor, and the control module is installed on the base.

[0007] Preferably, a positioning frame for supporting the lower mold is provided in the groove; after stamping is completed, the lower mold only needs to be pushed up along the groove from the bottom of the positioning frame, and the hinge on the lower mold can be exposed above the groove. At this time, the stamped hinge can be easily removed, which is convenient for material removal.

[0008] Preferably, a handle is fixedly connected to the bottom of the lower mold, and a horizontal plate located below the positioning frame is fixedly connected in the groove. The handle passes through the horizontal plate, and a limiting ring located below the horizontal plate is fixedly sleeved on the handle. A spring is sleeved on the handle, and the two ends of the spring are respectively fixedly connected to the handle and the horizontal plate; the lower mold is pushed upward by the handle, and due to the limitation of the limiting ring, the highest position of the lower mold can be limited, avoiding excessive force to directly push the lower mold out of the groove, thereby making the material removal process more convenient.

[0009] Preferably, a mounting base is fixedly connected to one side of the top of the die table, and a gear is rotatably connected to the mounting base. Rack one and rack two are simultaneously meshed and connected to the gear, which are perpendicular to each other. Rack two is slidably connected to the mounting base, and a push block is fixedly connected to the end of rack two close to the lower mold. Rack one is located inside the die table and its end is fixed on the handle; when the lower mold is in the initial position, the push block is located on one side of the lower mold, and when the lower mold is lifted up by the handle, the handle will synchronously drive rack one to move, and then rack one meshes with the gear to drive rack two and the push block to move to the right. When the lower mold moves to the highest position, the push block is just above the lower mold, and the hinge on the lower mold can be directly pushed to the other side by the push block, thereby completing the material removal.

[0010] Preferably, the output and input of the pressure acquisition module and the output and input of the current acquisition module are electrically connected to the input and output of the control module respectively, and the output of the control module is electrically connected to the input of the motor.

[0011] Preferably, the control module controls the execution steps of the stamping state of the hinge according to the comparison result as follows:

[0012] Real-time detection: The current acquisition module acquires the motor load current; the pressure acquisition module acquires the dynamic pressure changes during the stamping process;

[0013] Coefficient calculation: The control module calculates the pressure fluctuation coefficient, current fluctuation coefficient and evaluation coefficient ;

[0014] Dynamic adjustment: If : Maintain the current speed or fine-tune according to process requirements; if : Reduce the punch head speed and increase the motor torque, is the reference threshold.

[0015] Preferably, the logic for generating the pressure fluctuation coefficient is:

[0016] S1, obtain the actual pressure of the upper die during the stamping process of the hinge at different times within T time through the pressure acquisition module, and The actual pressure obtained at each moment is calibrated as , , is a positive integer;

[0017] S2. Calculate the pressure fluctuation coefficient. The calculation expression is:

[0018]

[0019] Where, is the average pressure during time T, is the number of pressure sampling times within time T.

[0020] Preferably, the generation logic of the current fluctuation coefficient is:

[0021] S1, obtain the actual load current of the motor at different times during the T time when the upper mold is stamping the hinge through the current acquisition module, and The actual load current obtained at any moment is calibrated as , , is a positive integer;

[0022] S2. Calculate the current fluctuation coefficient. The calculation expression is:

[0023]

[0024] Where, is the average current during time T, is the number of samples within time T.

[0025] Preferably, the control module performs a formula analysis according to the formula:

[0026]

[0027] Where, 、 is the preset weight coefficient, .

[0028] Compared with the prior art, the present invention provides a stamping device for automobile hinge processing that is convenient for material removal and has the following beneficial effects:

[0029] 1. A stamping machine for automotive hinge processing that facilitates material removal. The equipment is equipped with a pressure acquisition module and a current acquisition module, which respectively monitor dynamic pressure changes and motor load current in real time during the stamping process. The control module generates pressure fluctuation coefficients, current fluctuation coefficients, and evaluation coefficients. By comparing the evaluation coefficients with preset reference thresholds, the control module accurately determines the stamping status and dynamically adjusts the punch head speed and motor torque based on different situations, ensuring the stamping process is always optimal. This effectively improves product processing accuracy and pass rate, while reducing scrap rate and production costs.

[0030] 2. A stamping device for automobile hinge processing that facilitates material removal. This invention incorporates a positioning frame within the groove. After stamping, the operator can easily lift the lower mold upward along the groove from below the positioning frame, exposing the hinge above the groove and quickly and conveniently removing the material. Furthermore, the handle, retaining ring, and spring structures at the bottom of the lower mold not only limit the height at which the lower mold can be lifted, preventing it from completely dislodging from the groove, but also further enhance the safety and convenience of the material removal process. Furthermore, the gear, rack, and push block linkage structure at the top of the mold platform automatically pushes the hinge to one side during the lifting of the lower mold, enabling automated material removal and significantly improving material removal efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 This is a schematic diagram of the overall structure of a stamping device for automobile hinge processing that is convenient for material removal, as proposed by the present invention;

[0032] Figure 2 This is a schematic diagram of the internal structure of a die table of a stamping equipment for automobile hinge processing that is convenient for material removal, as proposed by the present invention;

[0033] Figure 3 This is a schematic diagram of the installation structure of a pressure collection module for a stamping device for convenient material collection in automobile hinge processing proposed by the present invention;

[0034] Figure 4 For the present invention Figure 2 A schematic diagram of the enlarged structure at point A;

[0035] Figure 5 This is a system block diagram of a stamping device for automobile hinge processing that is easy to take out materials, as proposed by the present invention.

[0036] In the figure: 1. Base; 2. Stand; 3. Slider; 4. Motor; 5. Screw; 6. Punch Head; 7. Upper Die; 8. Die Table; 9. Groove; 10. Lower Die; 11. Pressure Acquisition Module; 12. Current Acquisition Module; 13. Control Module; 14. Positioning Frame; 15. Horizontal Plate; 16. Handle; 17. Limiting Ring; 18. Spring; 19. Mounting Seat; 20. Gear; 21. Rack 1; 22. Rack 2; 23. Push Block. DETAILED DESCRIPTION

[0037] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0038] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as limiting the present invention.

[0039] Reference Figure 1-Figure 5 A stamping device for automobile hinge processing that facilitates material removal includes a base 1, a platform 2 is fixedly connected to the top of the base 1, a slider 3 is slidably connected to the platform 2, a punch head 6 is fixedly connected to the slider 3, and an upper mold 7 is fixedly connected to the bottom end of the punch head 6, a motor 4 is fixedly connected to the top of the platform 2, the output shaft of the motor 4 is connected to a screw 5 that is rotatably connected to the platform 2, and the screw 5 is threadedly connected to the slider 3, a die table 8 located below the upper mold 7 is fixedly connected to the platform 2, and a lower mold 10 is set in a groove 9 at the top of the die table 8, and also includes:

[0040] The pressure acquisition module 11 is used to monitor the dynamic pressure changes during the stamping process in real time and generate the pressure fluctuation coefficient through the control module 13;

[0041] The current acquisition module 12 is used to obtain the load current of the motor 4 in real time and generate the current fluctuation coefficient through the control module 13;

[0042] It should be noted that the pressure acquisition module 11 can be a pressure sensor or other device capable of monitoring dynamic pressure changes during the stamping process in real time, the current acquisition module 12 can be a current sensor or other device capable of obtaining the load current of the motor 4 in real time, and the control module 13 is an embedded controller (such as a PLC or industrial PC) (such as the STM32 series) with an integrated data fusion algorithm. Therefore, the pressure acquisition module 11, the current acquisition module 12, and the control module 13 are not specifically limited here and can be selected according to actual needs;

[0043] During use, the hinge raw material to be punched is placed on the lower mold 10 in the groove 9, and then the screw 5 is driven to rotate by the output shaft of the motor 4, and the slider 3, the punch head 6 and the upper mold 7 are driven downward by the screw 5 to punch the raw material on the lower mold 10. During this period, the control module 13 conducts a comprehensive analysis of the generated pressure fluctuation coefficient and the current fluctuation coefficient, generates an evaluation coefficient, and determines whether the current stamping state of the hinge of the equipment meets the normal stamping. The evaluation coefficient is compared with the pre-set evaluation coefficient reference threshold, and the stamping state of the hinge is controlled according to the comparison result.

[0044] The pressure acquisition module 11 is installed at the position where the punch head 6 and the upper die 7 are connected, the current acquisition module 12 is integrated and installed on the motor 4 , and the control module 13 is installed on the base 1 .

[0045] Furthermore, a positioning frame 14 is provided in the groove 9 for supporting the lower mold 10;

[0046] During use, after stamping is completed, it is only necessary to push the lower mold 10 upward along the groove 9 from the bottom of the positioning frame 14, and the hinge on the lower mold 10 can be exposed above the groove 9. At this time, the stamped hinge can be easily removed, which is convenient for material removal.

[0047] Furthermore, a handle 16 is fixedly connected to the bottom of the lower mold 10, and a horizontal plate 15 located below the positioning frame 14 is fixedly connected to the groove 9. The handle 16 passes through the horizontal plate 15. A limiting ring 17 located below the horizontal plate 15 is fixedly sleeved on the handle 16. A spring 18 is sleeved on the handle 16. The two ends of the spring 18 are fixedly connected to the handle 16 and the horizontal plate 15 respectively.

[0048] When in use, the lower mold 10 is pushed upward by the handle 16. Due to the limitation of the limit ring 17, the highest position of the lower mold 10 can be limited to avoid using excessive force to completely push the lower mold 10 out of the groove 9, thereby making the material removal process more convenient.

[0049] Furthermore, a mounting base 19 is fixedly connected to one side of the top of the die table 8. A gear 20 is rotatably connected to the mounting base 19. A rack 1 21 and a rack 2 22 are meshed and connected to the gear 20, which are perpendicular to each other. The rack 22 is slidably connected to the mounting base 19. A push block 23 is fixedly connected to the end of the rack 22 near the lower die 10. The rack 1 21 is located inside the die table 8 and its end is fixed to the handle 16.

[0050] During use, when the lower mold 10 is in the initial position, the push block 23 is located on one side of the lower mold 10, and when the lower mold 10 is pushed upward by the handle 16, the handle 16 will synchronously drive the rack 1 21 to move, and then the rack 1 21 engages the gear 20 to drive the rack 2 22 and the push block 23 to move to the right. When the lower mold 10 moves to the highest position, the push block 23 is just above the lower mold 10, and the hinge on the lower mold 10 can be directly pushed to the other side by the push block 23, thereby completing the material removal.

[0051] The output and input ends of the pressure acquisition module 11 and the output and input ends of the current acquisition module 12 are electrically connected to the input and output ends of the control module 13 respectively, and the output end of the control module 13 is electrically connected to the input end of the motor 4.

[0052] In another embodiment, through the cooperation of the pressure acquisition module 11, the current acquisition module 12 and the control module 13, the control module 13 comprehensively analyzes the generated pressure fluctuation coefficient and the current fluctuation coefficient to generate an evaluation coefficient, determines whether the current stamping state of the hinge by the device meets the normal stamping condition, compares the evaluation coefficient with a preset evaluation coefficient reference threshold, and controls the stamping state of the hinge according to the comparison result. The specific execution steps are as follows:

[0053] Real-time detection: the current acquisition module 12 acquires the load current of the motor 4; the pressure acquisition module 11 acquires the dynamic pressure changes during the stamping process;

[0054] Coefficient calculation: The control module 13 calculates the pressure fluctuation coefficient:

[0055] Among them, the pressure fluctuation coefficient is used to quantify the dynamic change of material deformation resistance during the stamping process. The larger the value, the more severe the resistance fluctuations encountered by the material during the stamping process, which may be caused by uneven material hardness, internal defects, or unstable contact between the stamping die and the material; if If the value increases significantly, it indicates abnormal interference (such as uneven material deformation or mold wear). The value requires to reduce the stamping speed to reduce the impact of the die and extend the life of the equipment;

[0056] The generation logic of the pressure fluctuation coefficient is:

[0057] S1, the actual pressure of the upper die 7 in the stamping process at different times within T time when stamping the hinge is obtained by the pressure acquisition module 11, and the actual pressure at the first time within T time is marked as , , , is a positive integer;

[0058] S2, the pressure fluctuation coefficient is calculated, and the expression for calculation is:

[0059]

[0060] In the formula, is the average pressure within T time, is the number of pressure sampling times within T time.

[0061] The current fluctuation coefficient is calculated:

[0062] Wherein, the current fluctuation coefficient is used to represent the dynamic change of the load of the motor 4 driving the stamping head 6, The greater the current fluctuation coefficient is, the more intense the load fluctuation of the motor 4 is, which may be caused by sudden change of material deformation resistance, increase of friction of mechanical transmission parts, or deviation of the movement track of the stamping head 6. The current fluctuation is directly related to the energy consumption efficiency of the motor 4. High value may mean energy waste or risk of equipment overload, and high value needs to reduce the stamping speed to balance the load and avoid overheating of the motor 4 or fatigue damage of the mechanical structure;

[0063] The generation logic of the current fluctuation coefficient is:

[0064] S1, the actual load current of the motor 4 within T time when stamping the hinge is obtained by the current acquisition module 12, and the actual load current at the first time within T time is marked as , , , is a positive integer;

[0065] S2, the current fluctuation coefficient is calculated, and the expression for calculation is:

[0066]

[0067] In the formula, is the average current within T time, is the number of sampling times within T time.

[0068] The evaluation coefficient is calculated:

[0069] Wherein, the formulaic analysis is carried out by the control module 13, according to the formula:

[0070]

[0071] Where, is the evaluation coefficient, 、 is the preset weight coefficient (determined dynamically based on experimental data and process requirements), .

[0072] Dynamic adjustment: If : Maintain the current speed or fine-tune according to process requirements; if : Reduce the speed of the punch head 6 and increase the torque of the motor 4, is the reference threshold.

[0073] The above description is only a preferred specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with the technical field, within the technical scope disclosed by the present invention, who makes equivalent replacements or changes based on the technical solution and inventive concept of the present invention, should be covered by the scope of protection of the present invention.

Claims

1. A stamping device for automobile hinge processing that is convenient for material removal, comprising a base (1), characterized in that: The top of the base (1) is fixedly connected to a stand (2), a slider (3) is slidably connected to the stand (2), a punch head (6) is fixedly connected to the slider (3), the bottom end of the punch head (6) is fixedly connected to an upper mold (7), the top of the stand (2) is fixedly connected to a motor (4), the output shaft of the motor (4) is connected to a screw (5) rotatably connected to the stand (2), the screw (5) is threadedly connected to the slider (3), a die table (8) located below the upper mold (7) is fixedly connected to the stand (2), a lower mold (10) is provided in a groove (9) at the top of the die table (8), and further comprises: A pressure acquisition module (11) is used to monitor the dynamic pressure changes during the stamping process in real time and generate a pressure fluctuation coefficient through a control module (13); A current acquisition module (12) is used to obtain the load current of the motor (4) in real time and generate a current fluctuation coefficient through a control module (13); The generated pressure fluctuation coefficient and current fluctuation coefficient are comprehensively analyzed by the control module (13) to generate an evaluation coefficient, which is compared with a preset evaluation coefficient reference threshold, and the stamping state of the hinge is controlled according to the comparison result. The execution steps are as follows: The current acquisition module (12) acquires the load current of the motor (4); the pressure acquisition module (11) acquires the dynamic pressure changes during the stamping process; the control module (13) calculates the pressure fluctuation coefficient, the current fluctuation coefficient and the evaluation coefficient ;like : Maintain the current speed or fine-tune according to process requirements; if : Reduce the speed of the punch head (6) and increase the torque of the motor (4), is the reference threshold; The generation logic of the pressure fluctuation coefficient is: S1. Obtain the actual pressure of the upper die (7) during the stamping process of the hinge at different times within T time through the pressure acquisition module (11). The actual pressure obtained at each moment is calibrated as , , is a positive integer; S2. Calculate the pressure fluctuation coefficient. The calculation expression is: ； Where, is the average pressure during time T, is the number of pressure sampling times within time T; The generation logic of the current fluctuation coefficient is: S1. Obtain the actual load current of the motor (4) at different times during the time T when the upper mold (7) is stamping the hinge through the current acquisition module (12). The actual load current obtained at any moment is calibrated as , , is a positive integer; S2. Calculate the current fluctuation coefficient. The calculation expression is: ； Where, is the average current during time T, is the number of sampling times within T time; Through the control module (13), the formula analysis is carried out according to the formula: ； Where, 、 is the preset weight coefficient, .

2. The stamping equipment for automobile hinge processing and convenient material removal according to claim 1, characterized in that: The pressure acquisition module (11) is installed at a position where the punch head (6) and the upper die (7) are connected, the current acquisition module (12) is integrated and installed on the motor (4), and the control module (13) is installed on the base (1).

3. The stamping equipment for automobile hinge processing and convenient material removal according to claim 1, characterized in that: A positioning frame (14) for supporting the lower mold (10) is provided in the groove (9).

4. The stamping equipment for automobile hinge processing and convenient material removal according to claim 3, characterized in that: A handle (16) is fixedly connected to the bottom of the lower mold (10), and a horizontal plate (15) located below the positioning frame (14) is fixedly connected in the groove (9). The handle (16) passes through the horizontal plate (15). A limiting ring (17) located below the horizontal plate (15) is fixedly sleeved on the handle (16). A spring (18) is sleeved on the handle (16), and both ends of the spring (18) are fixedly connected to the handle (16) and the horizontal plate (15), respectively.

5. The stamping equipment for automobile hinge processing and convenient material removal according to claim 4, characterized in that: A mounting seat (19) is fixedly connected to one side of the top of the mold table (8), and a gear (20) is rotatably connected to the mounting seat (19). A rack 1 (21) and a rack 2 (22) are simultaneously meshed and connected to the gear (20), which are perpendicular to each other. The rack 2 (22) is slidably connected to the mounting seat (19), and a push block (23) is fixedly connected to one end of the rack 2 (22) close to the lower mold (10). The rack 1 (21) is located inside the mold table (8) and its end is fixed to the handle (16).

6. The stamping equipment for automobile hinge processing and convenient material removal according to claim 1, characterized in that: The output end and input end of the pressure acquisition module (11) and the output end and input end of the current acquisition module (12) are electrically connected to the input end and output end of the control module (13), respectively. The output end of the control module (13) is electrically connected to the input end of the motor (4).

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