Automobile panel stamping die

Abstract

This invention discloses an automotive panel stamping die, relating to the field of stamping die technology. It includes a base, a stamping mechanism mounted on the base, a forming mechanism located below the stamping mechanism, and a flipping mechanism connected to the forming mechanism for driving the forming mechanism to flip, enabling alternating operation at two workstations, waste material discharge, and workpiece demolding preparation. This invention achieves alternating operation at two workstations through the flipping mechanism, simultaneously completing waste material discharge and workpiece demolding preparation during the flipping process. This effectively avoids waste accumulation, ensures the stability of continuous processing, and eliminates cumulative errors caused by multi-process transfer and repeated positioning. Simultaneously, it reduces the need for multiple machines, tooling, and manpower, shrinks the production footprint, improves automation and continuous production levels, and makes the pedal structure stronger and more reliable in terms of assembly adaptability, fully meeting the requirements for high-precision, high-efficiency, large-scale, low-cost production and safe use of automotive braking components.

Description

Technical Field

[0001] This invention relates to the field of stamping die technology, specifically to a stamping die for an automotive panel. Background Technology

[0002] As a core functional component of the vehicle braking system, the car brake pedal is a key operational medium for the driver to transmit braking commands and achieve vehicle deceleration or stopping. Its structural strength, dimensional accuracy, molding consistency, and assembly adaptability are directly related to the stability of vehicle braking performance and driving safety, and have extremely high requirements for the rigor and reliability of the processing technology.

[0003] Specifically, the existing brake pedal manufacturing process mainly consists of three core steps, each performed independently and requiring different processing equipment and tooling fixtures:

[0004] The first step is the blank cutting process. Using equipment such as CNC cutting machine or abrasive wheel cutting machine, the blank is cut according to the preset shape of the pedal, and excess scrap is removed to obtain a pre-formed flat pedal blank.

[0005] The second step is the punching process. The cut and polished flat pedal blank is transferred to the punching machine. Through the preset punching mold, the preset position on the pedal surface is punched. This includes stress holes for releasing the internal stress generated during pedal processing and improving structural stability, as well as mounting holes for connecting and fixing the pedal to the brake linkage and pedal bracket.

[0006] The third step is the stamping process, where the flat blank with punched holes is transferred to the stamping machine again. With the help of a special arc-shaped stamping die, the high pressure applied by the stamping machine causes the flat blank to undergo plastic deformation, and finally form an arc-shaped structure that is adapted to the vehicle's cockpit space and conforms to the ergonomic stepping angle.

[0007] The existing processing flow has significant shortcomings: Firstly, the process connections are cumbersome, with the two core processes of punching and stamping being independent of each other. The blank needs to be transferred and positioned multiple times between different processing equipment, which not only prolongs the overall production cycle and reduces production efficiency, but also easily leads to cumulative errors due to multiple positioning and clamping. This makes it difficult to guarantee the dimensional accuracy, hole accuracy, and arc forming accuracy of the pedal, affecting product consistency. Some unqualified products also need to be reworked, further increasing production costs. Secondly, multiple processes require corresponding processing equipment, tooling fixtures, and operators, which not only occupies a large production space, but also increases the costs of equipment investment, manual management, and process coordination, making it difficult to meet the current high-efficiency, high-precision, and large-scale production needs of the automotive parts industry. Summary of the Invention

[0008] Therefore, the purpose of this invention is to provide a solution to the technical problems mentioned in the background art.

[0009] To achieve the above objectives, the present invention provides the following technical solution: an automotive panel stamping die, comprising a base, a stamping mechanism, a forming mechanism, a flipping mechanism, and an ejection mechanism, wherein the stamping mechanism is mounted on the base and is used to simultaneously realize the arc forming and hole punching of the workpiece;

[0010] The stamping mechanism includes a support frame, a stamping frame, a first hydraulic cylinder, a punching frame, a first punch, a second hydraulic cylinder, and a second punch;

[0011] The stamping mechanism is fixed to the top of the base by two sets of support frames. The two sets of first hydraulic cylinders are installed on the two sets of support frames to drive the stamping frame to press down to achieve arc forming. The two sets of second hydraulic cylinders are installed at both ends of the top of the stamping frame to drive the punching frame to extend, thereby driving the first punch and the second punch to complete the punching.

[0012] The bottom of the stamping frame is an arc-shaped surface that matches the arc-shaped cavity of the forming plate. It is used to hold the blank under pressure and form it. The first punch is set with stress holes, and the second punch is set with mounting holes. They are used to punch out stress holes and mounting holes respectively.

[0013] The forming mechanism is located below the stamping mechanism and is used to carry the blank and provide an arc-shaped cavity. The forming mechanism is provided with stress holes, mounting holes and waste discharge holes to cooperate with punching and discharge waste.

[0014] The forming mechanism includes a connecting frame, a forming plate, a connecting shaft, and a fixed bracket;

[0015] The two sets of molded plates are attached to each other and fixedly connected by two sets of connecting frames. Each set of connecting frames has a connecting shaft fixed on one side, and both sets of connecting shafts are movably connected to the base through fixed brackets.

[0016] The forming plate has an arc-shaped cavity inside, which is used to stamp the flat blank into an arc-shaped brake pedal;

[0017] The waste discharge holes are located in the middle of both sides between the two forming plates, and are used to automatically discharge punching waste when the plate is rotated 90°.

[0018] The two sets of forming plates are provided with ejection holes that cooperate with the ejector pins, and the ejector pins and ejection holes slide against each other for ejection and demolding.

[0019] The flipping mechanism is connected to the forming mechanism and is used to drive the forming mechanism to flip, realize the alternating operation of the two stations, waste discharge and workpiece demolding preparation. The flipping mechanism includes a drive motor, an output gear and a gear ring.

[0020] The drive motor is mounted on one of the fixed brackets and meshes with a gear ring fixed on the outside of one of the connecting shafts through an output gear, driving the forming mechanism to rotate 180° to achieve dual-station alternation.

[0021] The ejection mechanism is located inside the forming mechanism and is used to automatically eject and demold the workpiece under the linkage of the punching action. The ejection mechanism includes a movable crossbar, a fixed guide plate, a force-bearing rod, an ejector rod, and a spring.

[0022] The movable crossbar is slidably connected to the two sets of fixed guide plates fixed between the two sets of molding plates, and the force-bearing rods are symmetrically fixed at the top and bottom of the movable crossbar. The two sets of top rods are symmetrically fixed at the top and bottom of both ends of the movable crossbar, and springs are fixed between both ends of the movable crossbar and the inner surfaces of the two sets of molding plates.

[0023] The force-bearing rod is pushed down by the stamping mechanism to drive the ejector rod to extend and achieve demolding; the spring is used to reset the ejector mechanism.

[0024] The stamping mechanism, forming mechanism, flipping mechanism and ejection mechanism work together to enable the brake pedal to complete arc forming, punching, waste discharge and demolding in one go in the same mold. The ejection mechanism and the stamping mechanism work together to complete the ejection and demolding of the previous workpiece while punching the next workpiece.

[0025] In summary, the present invention has the following main beneficial effects:

[0026] This invention integrates stamping arc forming, stress hole and mounting hole punching, automatic waste discharge, linked demolding, and station flipping into a single mold, enabling brake pedals to complete forming and punching in a single clamping operation. This significantly simplifies the processing flow and improves production efficiency. The flipping mechanism enables alternating operation between two stations, simultaneously completing waste discharge and workpiece demolding preparation during the flipping process. This effectively avoids waste accumulation, ensures the stability of continuous processing, eliminates cumulative errors caused by multi-process transfers and repeated positioning, and significantly improves pedal dimensional accuracy, hole position accuracy, and forming consistency, reducing scrap rate and rework costs. Simultaneously, it reduces the need for multiple machines, tooling, and manpower, shrinks the production footprint, and improves automation and continuous production levels. This makes the pedal structural strength and assembly adaptability more reliable, fully meeting the requirements for high-precision, high-efficiency, large-scale, low-cost production and safe use of automotive brake components. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0028] Figure 2 This is a cross-sectional view of the entire invention;

[0029] Figure 3 For the present invention Figure 2 Enlarged view of point A;

[0030] Figure 4 This is an exploded view of the molding mechanism of the present invention;

[0031] Figure 5 This is a cross-sectional view of the center of the push rod of the present invention;

[0032] Figure 6 This is an enlarged view of the ejection mechanism of the present invention;

[0033] Figure 7 This is a schematic diagram of the stamping mechanism of the present invention;

[0034] Figure 8 This is a schematic diagram of the punching frame of the present invention;

[0035] Figure 9 This is a schematic diagram of the stamping frame of the present invention.

[0036] In the diagram: 1. Base; 2. Stamping mechanism; 201. Support frame; 202. Stamping frame; 203. First hydraulic cylinder; 204. Punching frame; 205. First punch; 206. Second hydraulic cylinder; 207. Second punch; 3. Forming mechanism; 301. Connecting frame; 302. Forming plate; 303. Stress hole; 304. Mounting hole; 305. Ejection hole; 306. Connecting shaft; 307. Fixed bracket; 308. Scrap discharge hole; 4. Tilting mechanism; 401. Drive motor; 402. Output gear; 403. Gear ring; 5. Ejection mechanism; 501. Movable crossbar; 502. Fixed guide plate; 503. Force rod; 504. Push rod; 505. Spring. Detailed Implementation

[0037] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0038] The embodiments of the present invention will now be described.

[0039] Example 1

[0040] A type of automotive panel stamping die, such as Figures 1 to 9 As shown, it includes a base 1, a stamping mechanism 2, a forming mechanism 3, a flipping mechanism 4, and an ejection mechanism 5.

[0041] The stamping mechanism 2 is fixedly installed on the top of the base 1. The forming mechanism 3 is installed on the top of the base 1 via a fixed bracket 307 and is located directly below the stamping mechanism 2. The flipping mechanism 4 is installed on the fixed bracket 307 and is connected to the forming mechanism 3 in a transmission manner. The ejection mechanism 5 is installed inside the forming mechanism 3.

[0042] The stamping mechanism 2 includes a support frame 201, a stamping frame 202, a first hydraulic cylinder 203, a punching frame 204, a first punch rod 205, a second hydraulic cylinder 206, and a second punch rod 207. The support frame 201 is fixedly installed on the top of the base 1. The first hydraulic cylinder 203 is fixedly installed on the top of the support frame 201, and the output end of the first hydraulic cylinder 203 is fixedly connected to the stamping frame 202. The second hydraulic cylinder 206 is fixedly installed on the top of the stamping frame 202, and the output end of the second hydraulic cylinder 206 is fixedly connected to the punching frame 204. The first punch rod 205 and the second punch rod 207 are both fixedly installed on the bottom of the punching frame 204.

[0043] The molding mechanism 3 includes a connecting frame 301, a molding plate 302, a connecting shaft 306, and a fixed bracket 307. The molding plate 302 is configured as two sets, which are fitted together and fixedly connected by the connecting frame 301. The connecting shaft 306 is fixedly installed on the outside of the connecting frame 301 and rotatably connected to the fixed bracket 307. The fixed bracket 307 is fixedly installed on the top of the base 1. The molding plate 302 has an arc-shaped cavity inside and stress holes 303, mounting holes 304, ejection holes 305, and waste discharge holes 308 on its surface.

[0044] The flipping mechanism 4 includes a drive motor 401, an output gear 402, and a gear ring 403; the drive motor 401 is fixedly mounted on the fixed bracket 307, the output gear 402 is fixedly mounted on the output end of the drive motor 401, and the gear ring 403 is fixedly mounted on the outside of the connecting shaft 306, and the output gear 402 and the gear ring 403 mesh with each other.

[0045] The ejection mechanism 5 includes a movable crossbar 501, a fixed guide plate 502, a force-bearing rod 503, a push rod 504, and a spring 505. The fixed guide plate 502 is fixedly installed between two forming plates 302. The movable crossbar 501 is slidably connected to the fixed guide plate 502. The force-bearing rod 503 is fixedly installed on the movable crossbar 501. The push rod 504 is fixedly installed on the movable crossbar 501 and slidably engages with the ejection hole 305. One end of the spring 505 is fixedly connected to the forming plate 302, and the other end of the spring 505 is fixedly connected to the movable crossbar 501.

[0046] Example 2

[0047] The difference between this embodiment and Embodiment 1 is that the working process of the present invention is described in further detail.

[0048] When in use, the staff first place the cut and shaped pedal blank into the forming plate 302 with the opening facing upward. The forming plate 302 has an arc-shaped cavity inside, which can press the flat pedal blank into an arc-shaped pedal.

[0049] At this time, the first set of two sets of first hydraulic cylinders 203 are activated. The output ends of the two sets of first hydraulic cylinders 203 drive the stamping frame 202 to descend a certain distance. At this time, the first punch 205 and the second punch 207 at the bottom of the punching frame 204 inside the stamping frame 202 will not extend out of the bottom surface of the stamping frame 202. The bottom of the stamping frame 202 is an arc-shaped surface. After descending, it can cooperate with the arc-shaped cavity inside the forming plate 302 to stamp the flat pedal blank into an arc-shaped structure.

[0050] At this time, the first hydraulic cylinder 203 maintains pressure and performs pressure holding operation on the arc-shaped pedal. Then, the two sets of second hydraulic cylinders 206 drive the punching frame 204 to extend relative to the punching frame 202. At this time, multiple sets of first punch rods 205 and second punch rods 207 fixed at the bottom of the punching frame 204 perform punching operation on the arc-shaped pedal.

[0051] Specifically, the first punch 205 and the second punch 207 punch stress holes 303 and mounting holes 304 into the pedal blank, respectively. The waste material formed by punching will be pushed from the stress holes 303 and mounting holes 304 into the space between the two molding plates 302.

[0052] After the first set of pedals is punched, the punching mechanism 2 rises and resets as a whole. At this time, the drive motor 401 of the flipping mechanism 4 starts and drives the gear ring 403 to rotate through the output gear 402. This drives the two sets of forming plates 302 to rotate 180 degrees as a whole through the connecting shaft 306 and the connecting frame 301. When the whole is rotated 90 degrees, the waste material formed by the punching of the first set of pedals will be discharged through the waste discharge hole 308 between the two sets of forming plates 302. When it is rotated to 180 degrees, the first set of pedal blanks has not yet been separated from the forming plate 302.

[0053] At this time, the staff will place the second set of pedal blanks on the flipped second set of molding plate 302, and then use the stamping mechanism 2 to stamp and punch the second set of pedal blanks again.

[0054] When punching holes in the second set of pedal blanks, the first set of punches 205 located at the center will pass through the corresponding stress hole 303 and press down on the force rod 503 of the ejection mechanism 5. At this time, the force rod 503 presses down and drives the two sets of ejector rods 504 to move downward against the elastic force of the spring 505 through the movable crossbar 501. At this time, as the ejector rods 504 extend downward, they will eject and demold the first set of pedal blanks.

[0055] When the molding mechanism 3 rotates 180 degrees again, the ejection mechanism 5 will be reset to its initial state under the action of the spring 505, which facilitates the ejection and demolding operation of the pedal blank that has been rotated to the bottom surface next time.

[0056] The above operations can be deduced in the same way. In general, the present invention enables the stamping arc forming and the punching of the pedal hole to be completed at the same station and in the same mold at one time, eliminating the need for multiple transfers and clampings of the two independent processes of punching and stamping in the traditional process, saving the blanks from the flow of materials between multiple machines, significantly shortening the production cycle and improving the overall processing efficiency.

[0057] The blank only needs to be positioned once to complete the forming and punching, eliminating the cumulative dimensional error caused by multiple clamping, which greatly improves the shape, hole accuracy and arc surface forming accuracy of the brake pedal, effectively avoiding defects such as wrinkles, cracks and hole misalignment of the pedal, significantly improving product consistency and reducing rework rate and scrap rate;

[0058] Simultaneously equipped with a flipping mechanism 4 and a waste discharge hole 308, it can automatically clean up punching waste during processing, eliminating the need for manual waste cleaning and preventing waste accumulation from affecting processing accuracy. Combined with continuous forming and demolding logic, it can achieve semi-automated continuous production, adapting to the needs of large-scale and efficient production of automotive parts.

[0059] The built-in linkage ejection mechanism 5 can automatically eject and demold the previous workpiece in the subsequent processing action, without the need for manual removal or additional demolding device, reducing manual intervention and improving production cycle and operation safety.

[0060] The forming and punching processes are completed simultaneously under pressure, which can effectively control the internal stress during the plastic deformation of the pedal, improve the structural strength and stability of the pedal, and enable the finished pedal to meet the load-bearing requirements of the braking system and the ergonomic needs, thereby improving the vehicle's braking safety and handling reliability.

[0061] Although embodiments of the present invention have been shown and described, these specific embodiments are merely explanations of the invention and are not intended to limit it. The specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. After reading this specification, those skilled in the art may make modifications, substitutions, and variations to the embodiments as needed without departing from the principles and spirit of the invention, but such modifications, substitutions, and variations are protected by patent law as long as they are within the scope of the claims of the present invention.

Claims

1. A stamping die for an automotive panel, comprising a base (1), a stamping mechanism (2), a forming mechanism (3), a flipping mechanism (4), and an ejection mechanism (5), characterized in that: The stamping mechanism (2) is mounted on the base (1) and is used to simultaneously realize the arc forming of the workpiece and the punching of the hole position; The forming mechanism (3) is located below the stamping mechanism (2) and is used to carry the blank and provide an arc-shaped cavity. The forming mechanism (3) is provided with stress holes (303), mounting holes (304) and waste discharge holes (308) for punching and discharging waste. The flipping mechanism (4) is connected to the forming mechanism (3) and is used to drive the forming mechanism (3) to flip, so as to realize the alternating operation of the two stations, the discharge of waste materials and the preparation of workpiece demolding. The ejection mechanism (5) is located inside the forming mechanism (3) and is used to automatically eject and demold the workpiece under the linkage of the punching action. The stamping mechanism (2), forming mechanism (3), flipping mechanism (4) and ejection mechanism (5) cooperate with each other to realize that the brake pedal completes arc forming, punching, waste discharge and demolding in the same mold in one go.

2. The automotive panel stamping die according to claim 1, characterized in that: The stamping mechanism (2) includes a support frame (201), a stamping frame (202), a first hydraulic cylinder (203), a punching frame (204), a first punch (205), a second hydraulic cylinder (206), and a second punch (207). The stamping mechanism (2) is fixed to the top of the base (1) by two sets of support frames (201). Two sets of first hydraulic cylinders (203) are installed on the two sets of support frames (201) to drive the stamping frame (202) to press down to achieve arc forming. Two sets of second hydraulic cylinders (206) are installed at both ends of the top of the stamping frame (202) to drive the punching frame (204) to extend, thereby driving the first punch (205) and the second punch (207) to complete the punching.

3. The automotive panel stamping die according to claim 1, characterized in that: The forming mechanism (3) includes a connecting frame (301), a forming plate (302), a connecting shaft (306), and a fixed bracket (307). The two sets of molding plates (302) are attached to each other and fixedly connected to each other by two sets of connecting frames (301). Each set of connecting frames (301) has a connecting shaft (306) fixed on one side, and both sets of connecting shafts (306) are movably connected to the base (1) by a fixed bracket (307). The forming plate (302) has an arc-shaped cavity inside, which is used to stamp the flat blank into an arc-shaped brake pedal.

4. The automotive panel stamping die according to claim 3, characterized in that: The flipping mechanism (4) includes a drive motor (401), an output gear (402), and a gear ring (403). The drive motor (401) is mounted on one of the fixed brackets (307) and meshes with the gear ring (403) fixed on the outside of one of the connecting shafts (306) through the output gear (402), driving the forming mechanism (3) to rotate 180° and realize the alternation of the two workstations.

5. The automotive panel stamping die according to claim 3, characterized in that: The ejection mechanism (5) includes a movable crossbar (501), a fixed guide plate (502), a force-bearing rod (503), an ejector rod (504), and a spring (505); The movable crossbar (501) is slidably connected to the two sets of fixed guide plates (502) fixed between the two sets of molding plates (302), and the force-bearing rods (503) are symmetrically fixed at the top and bottom of the movable crossbar (501). The two sets of top rods (504) are symmetrically fixed at the top and bottom of both ends of the movable crossbar (501), and springs (505) are fixed between both ends of the movable crossbar (501) and the inner surfaces of the two sets of molding plates (302). The force rod (503) is pressed down by the stamping mechanism (2) to drive the ejector rod (504) to extend and achieve demolding, and the spring (505) is used to reset the ejector mechanism (5).

6. The automotive panel stamping die according to claim 1, characterized in that: The bottom of the stamping frame (202) is an arc-shaped surface, which matches the arc-shaped cavity of the forming plate (302) and is used to hold the blank under pressure for forming.

7. The automotive panel stamping die according to claim 2, characterized in that: The first punch (205) is provided with a stress hole (303), and the second punch (207) is provided with a mounting hole (304) to punch out stress holes and mounting holes respectively.

8. The automotive panel stamping die according to claim 3, characterized in that: The waste discharge hole (308) is located in the middle of both sides between the two forming plates (302) and is used to automatically discharge the punching waste when it is rotated 90°.

9. The automotive panel stamping die according to claim 1, characterized in that: The two sets of forming plates (302) are provided with ejection holes (305) that cooperate with the ejector pins (504), and the ejector pins (504) and the ejection holes (305) slide against each other for ejection and demolding.

10. The automotive panel stamping die according to claim 1, characterized in that: The ejection mechanism (5) is linked with the stamping mechanism (2) to eject and demold the previous workpiece while punching the next workpiece.

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