Stamping equipment facilitating material taking in automobile hinge machining

Abstract

The invention belongs to the technical field of stamping, and particularly relates to automobile hinge machining stamping equipment facilitating material taking, which comprises a base, a rack is fixedly connected to the top of the base, a sliding block is slidably connected to the rack, a stamping head is fixedly connected to the sliding block, an upper die is fixedly connected to the bottom end of the stamping head, and a motor is fixedly connected to the top end of the rack. An output shaft of the motor is connected with a screw rod rotationally connected with the rack, the screw rod is in threaded connection with the sliding block, the rack is fixedly connected with a die table located below the upper die, and a lower die is arranged in a groove in the top of the die table. According to the invention, a pressure fluctuation coefficient, a current fluctuation coefficient and an evaluation coefficient are generated through a control module. The evaluation coefficient is compared with a preset reference threshold value, the control module can accurately judge the stamping state, the stamping head speed and the motor torque are dynamically adjusted according to different conditions, and it is guaranteed that the stamping process is in the optimal state all the time.

Description

Technical Field

[0001] The present invention relates to the field of stamping technology, and particularly to a stamping device for facilitating material taking in the processing of automobile hinges. Background Art

[0002] Stamping is a forming processing method that applies external forces to plates, strips, pipes, profiles, etc. by a press and a die, causing them to undergo plastic deformation or separation, thereby obtaining stamped parts with the required shapes and dimensions. Stamping and forging belong to plastic processing and are collectively called forging and pressing. The blanks for stamping are mainly hot-rolled and cold-rolled steel plates and steel strips.

[0003] The main stamping processes required in the manufacturing of hinges include bending forming, trimming and punching, curling, cutting, etc. Among them, bending forming is a stamping forming process that forms a blank of sheet metal, bar stock, pipe, or profile into a shape with a certain curvature, a certain angle, and a certain shape. The stamping process needs to use buffering (slow stamping) to perform stamping. Existing stamping devices generally use springs to achieve the buffering effect, but the accuracy of buffering achieved by springs is limited, and it is impossible to well control the buffering force at any stage. Therefore, corresponding improvements are made to solve 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 facilitating material taking in the processing of automobile hinges.

[0005] A stamping device for facilitating material taking in the processing of automobile hinges proposed by the present invention includes a base. A frame is fixedly connected to the top of the base. A slider is slidably connected to the frame. A stamping head is fixedly connected to the slider. A top die is fixedly connected to the bottom end of the stamping head. A motor is fixedly connected to the top end of the frame. The output shaft of the motor is connected to a screw rod that is rotatably connected to the frame. The screw rod is threadedly connected to the slider. A die table is fixedly connected to the frame and is located below the top die. A bottom die is arranged in a groove at the top of the die table. The device further includes: a pressure acquisition module for real-time monitoring of the dynamic pressure changes during the stamping process and generating a pressure fluctuation coefficient through a control module; a current acquisition module for real-time obtaining of the motor load current and generating a current fluctuation coefficient through the control module. Place the hinge raw material to be stamped on the bottom die in the groove, then drive the screw rod to rotate through the output shaft of the motor, and drive the slider, the stamping head, and the top die to move downward through the screw rod to stamp the raw material on the bottom die. During this period, the control module comprehensively analyzes the generated pressure fluctuation coefficient and current fluctuation coefficient to generate an evaluation coefficient, determines whether the current stamping state of the hinge by the device meets the normal stamping, compares the evaluation coefficient with a preset evaluation coefficient reference threshold, and controls the stamping state of the hinge according to the comparison result.

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

[0007] Preferably, a positioning frame for supporting the lower die is provided in the groove; after stamping, the lower die can be jacked upward along the groove from below the positioning frame, and the hinge on the lower die can be exposed above the groove. At this time, the stamped hinge can be conveniently taken away, which has the effect of convenient material taking.

[0008] Preferably, the bottom of the lower die is fixedly connected with a handle, the groove is fixedly connected with a cross plate located below the positioning frame, the handle passes through the cross plate, a limiting ring is fixedly sleeved on the handle and located below the cross plate, and a spring is sleeved on the handle. The two ends of the spring are respectively fixedly connected with the handle and the cross plate; by jacking up the lower die through the handle, due to the limitation of the limiting ring, the highest position of the jacked-up lower die can be limited, avoiding directly jacking the lower die out of the groove with too much force, thus making the material taking process more convenient.

[0009] Preferably, one side of the top of the die table is fixedly connected with a mounting seat, a gear is rotatably connected to the mounting seat, the gear is simultaneously meshed with a first rack and a second rack that are perpendicular to each other, the second rack is slidably connected to the mounting seat, one end of the second rack close to the lower die is fixedly connected with a pushing block, and the first rack is located inside the die table and its end is fixed on the handle; when the lower die is in the initial position, the pushing block is located on one side of the lower die, and when the lower die is jacked up through the handle, the handle will synchronously drive the first rack to move, and then the first rack meshes with the gear to drive the second rack and the pushing block to move to the right. When the lower die moves to the highest position, the pushing block just locates above the lower die, and the hinge on the lower die can be directly pushed to the other side through the pushing block, thus completing the material taking.

[0010] Preferably, the output end and input end of the pressure acquisition module, and the output end and input end of the current acquisition module are respectively electrically connected to the input end and output end of the control module, and the output end of the control module is electrically connected to the input end 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 change during the stamping process;

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

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

[0015] Preferably, the generation logic of the pressure fluctuation coefficient is:

[0016] S1. Obtain the actual pressure during the stamping process at different times within T time when the upper die punches the hinge through the pressure acquisition module, and calibrate the actual pressure obtained at the th moment within T time as , , is a positive integer;

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

[0018]

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

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

[0021] S1. Obtain the actual load current of the motor at different times within T time when the upper die punches the hinge through the current acquisition module, and calibrate the actual load current obtained at the th moment within T time as , , is a positive integer;

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

[0023]

[0024] In the formula, is the average current within T time, is the number of sampling times within T time.

[0025] Preferably, through the control module for formula analysis, according to the formula:

[0026]

[0027] In the formula, 、 are preset weight coefficients, .

[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 convenient for material removal, as proposed by the present invention.

[0036] In the figure: 1, base; 2, bench; 3, slider; 4, motor; 5, screw; 6, stamping 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, cross plate; 16, handle; 17, limiting ring; 18, spring; 19, mounting seat; 20, gear; 21, first rack; 22, second rack; 23, pushing block. Specific embodiments

[0037] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a 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 orientation or positional relationship indicated by the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is 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 orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention.

[0039] Referring to Figures 1 - 5 , a stamping device for facilitating material taking in the processing of automobile hinges, including a base 1, a bench 2 fixedly connected to the top of the base 1, a slider 3 slidably connected to the bench 2, a stamping head 6 fixedly connected to the slider 3, an upper die 7 fixedly connected to the bottom end of the stamping head 6, a motor 4 fixedly connected to the top end of the bench 2, a screw 5 connected to the output shaft of the motor 4 and rotatably connected to the bench 2, the screw 5 being threadedly connected to the slider 3, a die table 8 fixedly connected to the bench 2 and located below the upper die 7, a lower die 10 provided in a groove 9 at the top of the die table 8, and further including:

[0040] A pressure acquisition module 11 for real-time monitoring of the dynamic pressure change during stamping and generating a pressure fluctuation coefficient through the control module 13;

[0041] A current acquisition module 12 for real-time obtaining of the load current of the motor 4 and generating a 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 devices that can monitor the dynamic pressure changes during the stamping process in real time. The current acquisition module 12 can be a current sensor or other devices that can obtain the load current of the motor 4 in real time. The control module 13 is an embedded controller (such as a PLC or an industrial PC) (such as the STM32 series) integrated with a data fusion algorithm. Therefore, the pressure acquisition module 11, the current acquisition module 12, and the control module 13 are not specifically defined here and can be selected according to actual needs;

[0043] During use, place the hinge raw material to be stamped on the lower die 10 in the groove 9, and then drive the screw 5 to rotate through the output shaft of the motor 4. Drive the slider 3, the stamping head 6, and the upper die 7 to move downward through the screw 5 to stamp the raw material on the lower die 10. During this period, the control module 13 comprehensively analyzes the generated pressure fluctuation coefficient and current fluctuation coefficient to generate an evaluation coefficient, and determines whether the current stamping state of the hinge by the device meets the normal stamping. Compare the evaluation coefficient with the pre-set evaluation coefficient reference threshold, and control the stamping state of the hinge according to the comparison result.

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

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

[0046] During use, after stamping, just lift the lower die 10 upward along the groove 9 from below the positioning frame 14, and the hinge on the lower die 10 can be exposed above the groove 9. At this time, the stamped hinge can be conveniently taken away, which has the effect of convenient material taking.

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

[0048] During use, lift the lower die 10 upward through the handle 16. Due to the limitation of the limiting ring 17, the highest position that the lower die 10 can be lifted can be limited, avoiding directly ejecting the lower die 10 completely from the groove 9 with too much force, thereby making the material taking 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, obtain the actual pressure of the upper mold 7 during the stamping process of the hinge at different times within T time through the pressure acquisition module 11, and The actual pressure obtained at each moment is calibrated as , , is a positive integer;

[0058] S2. Calculate the pressure fluctuation coefficient. The calculation expression is:

[0059]

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

[0061] Calculate the current fluctuation coefficient:

[0062] Among them, the current fluctuation coefficient is used to characterize the dynamic change of the load of the motor 4 driving the punch head 6. The larger the current is, the more severe the load fluctuation of motor 4 is, which may be caused by a sudden change in material deformation resistance, increased friction of mechanical transmission components, or deviation of the motion trajectory of punch head 6. Current fluctuation is directly related to the energy consumption efficiency of motor 4. High A high value may mean energy waste or risk of equipment overload. The punching speed needs to be reduced to balance the load and avoid overheating of motor 4 or fatigue damage of the mechanical structure;

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

[0064] S1, obtain the actual load current of the motor 4 at different times during the T time when the upper mold 7 is punching the hinge through the current acquisition module 12, and The actual load current obtained at any moment is calibrated as , , is a positive integer;

[0065] S2. Calculate the current fluctuation coefficient. The calculation expression is:

[0066]

[0067] Where, is the average current during time T, is the number of samples within time T.

[0068] Calculate the evaluation coefficient:

[0069] Among them, the control module 13 performs a formula analysis according to the formula:

[0070]

[0071] In the formula, is the evaluation coefficient, , are preset weight coefficients (dynamically determined by combining 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 stamping head 6 and increase the torque of the motor 4, is the reference threshold value.

[0073] As mentioned above, the above are only the preferred specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution of the present invention and its inventive concept, making equivalent substitutions or changes, should be covered by the protection scope of the present invention.

Claims

1. A stamping device for facilitating material taking in the processing of an automobile hinge, including a base (1), characterized in that, A base (1) is fixedly connected to the top of a bench (2). A slider (3) is slidably connected to the bench (2). A punching head (6) is fixedly connected to the slider (3). A top die (7) is fixedly connected to the bottom end of the punching head (6). A motor (4) is fixedly connected to the top end of the bench (2). The output shaft of the motor (4) is connected to a screw rod (5) rotatably connected to the bench (2). The screw rod (5) is threadedly connected to the slider (3). A die table (8) is fixedly connected to the bench (2) and is located below the top die (7). A lower die (10) is arranged in a groove (9) at the top of the die table (8). Further included are: A pressure acquisition module (11) for monitoring the dynamic pressure change during the stamping process in real time and generating a pressure fluctuation coefficient through a control module (13); A current acquisition module (12) for acquiring the load current of the motor (4) in real time and generating a current fluctuation coefficient through the control module (13); The control module (13) comprehensively analyzes the generated pressure fluctuation coefficient and current fluctuation coefficient to generate an evaluation coefficient. The evaluation coefficient is compared with a preset evaluation coefficient reference threshold, and the stamping state of the hinge is controlled according to the comparison result.

2. The stamping equipment for facilitating material taking in the processing of an automotive hinge according to claim 1, wherein, The pressure acquisition module (11) is installed at the position where the punching head (6) is connected to the top die (7). The current acquisition module (12) is integrally installed on the motor (4). The control module (13) is installed on the base (1).

3. A stamping device for facilitating material taking in the processing of an automobile hinge according to claim 1, characterized in that, A positioning frame (14) for supporting the lower die (10) is arranged in the groove (9).

4. A stamping device for facilitating material taking in the processing of an automotive hinge according to claim 3, characterized in that, A handle (16) is fixedly connected to the bottom of the lower die (10). A cross plate (15) is fixedly connected to the groove (9) and is located below the positioning frame (14). The handle (16) passes through the cross plate (15). A limit ring (17) is fixedly sleeved on the handle (16) and is located below the cross plate (15). A spring (18) is sleeved on the handle (16). The two ends of the spring (18) are respectively fixedly connected to the handle (16) and the cross plate (15).

5. A stamping device for facilitating material taking in the processing of an automotive hinge according to claim 4, characterized in that, An installation seat (19) is fixedly connected to one side of the top of the die table (8). A gear (20) is rotatably connected to the installation seat (19). A first rack (21) and a second rack (22) that are perpendicular to each other are simultaneously meshed with the gear (20). The second rack (22) is slidably connected to the installation seat (19). A pushing block (23) is fixedly connected to one end of the second rack (22) close to the lower die (10). The first rack (21) is located inside the die table (8) and its end is fixed to the handle (16).

6. A stamping device for facilitating material taking in the processing of an automotive hinge 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 respectively electrically connected to the input end and output end of the control module (13). The output end of the control module (13) is electrically connected to the input end of the motor (4).

7. A stamping device for facilitating material taking in the processing of an automotive hinge according to claim 1, characterized in that, The steps for the control module (13) to control the stamping state of the hinge according to the comparison result are as follows: 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 change during the stamping process; Coefficient calculation: The control module (13) calculates the pressure fluctuation coefficient, the current fluctuation coefficient, and the evaluation coefficient ; Dynamic adjustment: If : Maintain the current speed or make fine adjustments according to process requirements; if : Reduce the speed of the stamping head (6) and increase the torque of the motor (4), is the reference threshold.

8. A stamping device for facilitating material taking in the processing of an automobile hinge according to claim 1, characterized in that, The generation logic of the pressure fluctuation coefficient is: S1. Obtain the actual pressure during the stamping process of the upper die (7) at different moments within time T when stamping the hinge through the pressure acquisition module (11), and calibrate the actual pressure obtained at the th moment within time T as , , where is a positive integer; S2. Calculate the pressure fluctuation coefficient, and the calculation expression is: In the formula, is the average pressure within time T, is the number of pressure samplings within time T.

9. A stamping device for facilitating material taking in the processing of an automotive hinge according to claim 8, characterized in that, The generation logic of the current fluctuation coefficient is as follows: S1. Obtain the actual load current of the motor (4) at different moments within time T when the upper die (7) punches the hinge through the current acquisition module (12), and calibrate the actual load current obtained at the th moment within time T as , , , where S2. Calculate the current fluctuation coefficient, and the calculation expression is: Wherein, is the average current within time T, is the number of sampling times within time T.

10. A stamping device for facilitating material taking in the processing of an automotive hinge according to claim 9, characterized in that, Perform formulaic analysis through the control module (13) according to the formula: Wherein, and are preset weight coefficients, .

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