Novel special-shaped metal stamping device
By incorporating structural designs such as bidirectional threaded rods, wedges, and L-shaped toothed plates, the problems of poor automatic demolding and limiting adaptability in traditional molds have been solved, achieving automatic demolding and flexible limiting, thereby improving production efficiency and equipment applicability.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHENZHEN FU RONG PRECISION CASTING CO LTD
- Filing Date
- 2025-06-19
- Publication Date
- 2026-06-19
AI Technical Summary
Traditional negative angle bending dies make it difficult for workpieces to detach automatically after stamping, and the limiting structure has poor adaptability, resulting in low production efficiency and cumbersome die replacement.
The design incorporates a bidirectional threaded rod to drive the adjustment of the limit block, a wedge block inclined surface to push the mold to move, an L-shaped toothed plate for automatic demolding, and a guide tube for guidance, thus achieving automatic demolding and flexible positioning.
It enables automatic demolding of workpieces, improves production efficiency, adapts to the limiting of metal sheets of different sizes, simplifies the mold replacement process, and extends the equipment life.
Smart Images
Figure CN224372631U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of stamping technology, specifically a novel irregular metal stamping device. Background Technology
[0002] In the field of metal stamping, negative angle bending (bending angle exceeding 90°) is a key process in sheet metal forming and is widely used in the production of irregular structural parts in industries such as vehicle manufacturing and 3C electronics.
[0003] After the traditional negative angle bending die is completed, the workpiece is often tightly wrapped around the surface of the punch or slider due to the springback force and adsorption effect generated by the plastic deformation. It is difficult to detach automatically and often requires manual removal by the worker, which affects the production efficiency. Secondly, the limiting structure of the die usually adopts a fixed limiting groove or stop design. The width and depth of the limiting groove are only suitable for a single product specification. When changing the workpiece size, the entire template or module needs to be replaced, which is cumbersome. Utility Model Content
[0004] To address the shortcomings of existing technologies, this application provides a novel irregular metal stamping device, which has advantages such as easy demolding and easy adjustment, thus solving the problems mentioned in the background art.
[0005] To achieve the above objectives, this application provides the following technical solution: a novel irregular metal stamping device, comprising a lower die and an upper die, wherein a die base is fixedly connected to the upper surface of the lower die, and two reset plates are fixedly connected to the upper surface of the die base, wherein insert rods are slidably inserted into the interior of each of the two reset plates, and mating dies are fixedly connected to the ends of the two insert rods that are close to each other, wherein the two mating dies are symmetrically arranged and have cavities on their close sides, and wherein a sliding groove is provided on the upper surface of each of the two mating dies, and a limit mechanism is provided inside each sliding groove;
[0006] The bottom of the upper die is fixedly connected to two symmetrically arranged wedges. The bottom of the upper die is fixedly connected to a punch. The bottom end of the punch is embedded with a guide tube. The two ends of the guide tube extend out to the front and back of the punch, respectively. An L-shaped toothed plate is slidably connected inside the guide tube. The bottom end of the L-shaped toothed plate is located in front of the punch and is lower than the bottom end of the punch. An embedding groove is opened on the upper surface of the lower die.
[0007] Furthermore, each of the limiting mechanisms includes a bidirectional threaded rod, with both ends of each bidirectional threaded rod rotatably connected to the front and rear inner walls of the adjacent slide groove, and both ends of each bidirectional threaded rod are threadedly connected to a limiting block.
[0008] The above solution, through the setting of the bidirectional threaded rod, allows for adjustment of the distance between the two limiting blocks, thereby facilitating the limiting of metal sheets of different widths and preventing displacement during the extrusion process.
[0009] Furthermore, one side of each of the two mating molds is set as an inclined surface, and the bottom end of each of the two wedges is set as an inclined surface, with each wedge being above the mating mold that is close to it.
[0010] With the above solution, the inclination angle of the wedge's inclined surface is consistent with the angle of its corresponding mating mold's inclined surface, ensuring that the wedge can smoothly push the mating mold to move horizontally when pressed down, avoiding jamming or wear due to angle deviation.
[0011] Furthermore, a power rod is rotatably connected to one side of the inner wall of the punch, a motor is installed on the inner wall of the punch, the output end of the motor is fixedly connected to one end of the power rod, and a gear is fixedly connected to the outer surface of the power rod, the gear meshing with an L-shaped toothed plate.
[0012] The above scheme, through the setting of gears, enables the L-shaped toothed plate to move.
[0013] Furthermore, both of the aforementioned inserts are rectangular, and a spring is provided between one end of each insert and the reset plate adjacent to it.
[0014] With the above solution, after the punch is reset, the two mating dies can be reset under the action of the spring.
[0015] Furthermore, a set of guide pillars is provided between the upper mold and the lower mold.
[0016] The above solution, through the setting of guide pillars, achieves precise alignment between the upper and lower dies, reduces lateral offset during the stamping process, absorbs the off-center load during equipment operation, and extends the service life of the dies and equipment.
[0017] Furthermore, the outer surfaces of each of the mold cavities and punches are polished.
[0018] The above solutions aim to reduce material wear and improve the surface finish of the product.
[0019] Compared with the prior art, the technical solution of this application has the following beneficial effects:
[0020] This novel irregular metal stamping device, after the upper die is reset upon completion of forming, uses a motor-driven gear to drive an L-shaped toothed plate to slide horizontally along a guide tube, pushing out the formed product wrapped around the punch. Combined with an external sliding plate, it can automatically unload the workpiece, avoiding the tedious process of unloading by workers and solving the problem of workpieces sticking to the die after negative angle bending. Secondly, the bidirectional threaded rod driven limiting mechanism can adjust the distance between the limiting blocks on both sides by rotating the bidirectional threaded rod, thereby adapting to metal sheets of different widths, improving overall applicability, achieving the effect of limiting metal sheets of different sizes, and ensuring bending effect. Attached Figure Description
[0021] Figure 1This is a three-dimensional schematic diagram of the overall structure of this application;
[0022] Figure 2 This is a front view of the overall structure of this application;
[0023] Figure 3 This is a structural diagram of the module used in this application;
[0024] Figure 4 The punch structure of this application Figure 1 ;
[0025] Figure 5 The punch structure of this application Figure 2 .
[0026] In the picture:
[0027] 1. Lower mold; 2. Upper mold; 3. Mold base; 4. Reset plate; 5. Insert rod; 6. Mating mold; 7. Mold cavity; 8. Slide groove; 9. Limiting mechanism; 901. Bidirectional threaded rod; 902. Limiting block;
[0028] 10. Wedge; 11. Punch; 12. Guide tube; 13. L-shaped toothed plate; 14. Embedded groove; 15. Power rod; 16. Motor; 17. Gear; 18. Spring; 19. Guide post. Detailed Implementation
[0029] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.
[0030] Please see Figure 1 , Figure 2 and Figure 3 This embodiment of a novel irregular metal stamping device includes a lower die 1 and an upper die 2. A die base 3 is fixedly connected to the upper surface of the lower die 1. Two reset plates 4 are fixedly connected to the upper surface of the die base 3. Insert rods 5 are slidably inserted into the interior of each of the two reset plates 4. A mating die 6 is fixedly connected to the end of each of the two insert rods 5 that is close to each other. The two mating dies 6 are symmetrically arranged and have cavities 7 on their close sides. A groove 8 is formed on the upper surface of each of the two mating dies 6.
[0031] Please see Figure 1 , Figure 2 and Figure 3Each groove 8 is equipped with a limiting mechanism 9 inside, and each limiting mechanism 9 includes a bidirectional threaded rod 901. The two ends of each bidirectional threaded rod 901 are rotatably connected to the front and rear inner sidewalls of the groove 8 that are close to it. The two ends of each bidirectional threaded rod 901 are threadedly connected to limiting blocks 902. By setting the bidirectional threaded rod 901, the distance between the two limiting blocks 902 can be adjusted, which facilitates the limiting of metal sheets of different widths and avoids deviation during the extrusion process. A set of guide pillars 19 is set between the upper die 2 and the lower die 1. By setting the guide pillars 19, the upper die 2 and the lower die 1 can be precisely matched, reducing lateral deviation during the stamping process and absorbing the off-center load force during equipment operation, thus extending the service life of the mold and equipment.
[0032] Please see Figure 1 , Figure 2 and Figure 3 The bottom of the upper mold 2 is fixedly connected to two symmetrically arranged wedges 10. One side of each of the two mating molds 6 is set as an inclined surface, and the bottom of each of the two wedges 10 is set as an inclined surface. Each wedge 10 is located above the mating mold 6 that is close to it. The inclination angle of the inclined surface of the wedge 10 is consistent with the inclination angle of the corresponding mating mold 6, ensuring that the wedge 10 can smoothly push the mating mold 6 to move horizontally when it is pressed down, and avoiding jamming or wear due to angle deviation.
[0033] Please see Figure 1 , Figure 4 and Figure 5 A punch 11 is fixedly connected to the bottom of the upper die 2. The outer surfaces of each die cavity 7 and the punch 11 are polished to reduce material wear and improve product surface finish. A guide tube 12 is embedded in the bottom end of the punch 11, with its two ends extending out from the front and back of the punch 11, respectively. An L-shaped toothed plate 13 is slidably connected inside the guide tube 12. The bottom end of the L-shaped toothed plate 13 is located in front of the punch 11 and is lower than the bottom end of the punch 11. When material is placed on the upper surfaces of the two mating dies 6, the upper die 2 is driven downwards by an external power source, and the material is extruded through the punch 11. After the metal sheet is pressed into the two mating dies 6, the wedge block 10 simultaneously squeezes the two mating dies 6 closer to each other, thereby causing the metal sheet to wrap around the surface of the punch 11 and form it. When the upper die 2 is reset, the toothed plate can slide inside the guide tube 12 and push the product to move horizontally along the punch 11, so that the product can automatically detach from the punch 11, improving production efficiency. The upper surface of the lower die 1 is provided with an embedding groove 14. After the upper die 2 is pressed down, since the bottom end of the L-shaped toothed plate 13 is lower than the punch 11, the embedding groove 14 serves as a clearance space, which can avoid deformation or breakage caused by the rigid contact between the L-shaped toothed plate 13 and the lower die 1 during stamping and mold closing.
[0034] Please see Figure 1 , Figure 4 and Figure 5A power rod 15 is rotatably connected to one side of the inner wall of the punch 11. A motor 16 is installed on the inner wall of the punch 11. The output end of the motor 16 is fixedly connected to one end of the power rod 15. A gear 17 is fixedly connected to the outer surface of the power rod 15. The gear 17 meshes with the L-shaped toothed plate 13. Through the setting of the gear 17, the L-shaped toothed plate 13 can be driven to move. Both insert rods 5 are rectangular. A spring 18 is set between one end of each insert rod 5 and the reset plate 4 that is close to it. When the punch 11 is reset, the two mating dies 6 can be reset under the action of the spring 18.
[0035] The working principle of the above embodiment is as follows: The metal sheet is placed horizontally on the upper surface of the two mating dies 6, so that it is positioned between the two limiting blocks 902. At this time, the two sides of the metal sheet are in contact with the limiting blocks 902, forming an initial positioning. By rotating the bidirectional threaded rod 901, the two limiting blocks 902 are driven to move in opposite directions along the slide groove 8. This adjustment can adapt to metal sheets of different widths, ensuring that the workpiece does not shift laterally during stamping. The external hydraulic power source drives the upper die 2 to move downward. The guide post 19 guides the punch 11 and the wedge block 10 to precisely align with the lower die 1, suppressing the lateral load. The punch 11 contacts the metal sheet first and presses it into the mold cavity 7 of the two mating dies 6, completing the basic bending. The inclined surface of the wedge block 10 is bent and simultaneously extruded by the corresponding inclined surface of the mating mold 6, pushing the mating mold 6 to slide horizontally along the insert rod 5, so that the metal sheet completely wraps the surface of the punch 11, forming a negative angle irregular structure. After the stamping is completed, the upper mold 2 rises, the wedge block 10 disengages from the mating mold 6, and the mating mold 6 returns to horizontal position under the action of the spring 18. The motor 16 drives the power rod 15 to rotate, which drives the gear 17 to rotate, meshing the L-shaped toothed plate 13 to slide horizontally along the guide tube 12. The bottom end of the L-shaped toothed plate 13 pushes the formed workpiece wrapped on the punch 11, forcing it to detach from the surface of the punch 11. The demolded workpiece slides down the preset slide plate to the collection area, realizing fully automatic unloading and eliminating the manual prying link.
[0036] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.
[0037] Although embodiments of this application have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of this application, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A novel irregular metal stamping device, comprising a lower die (1) and an upper die (2), characterized in that: The upper surface of the lower mold (1) is fixedly connected to a mold base (3), and the upper surface of the mold base (3) is fixedly connected to two reset plates (4). The two reset plates (4) are slidably inserted with insert rods (5). The two insert rods (5) are fixedly connected to a mating mold (6) at their close ends. The two mating molds (6) are symmetrically arranged and have mold cavities (7) on their close sides. The upper surfaces of the two mating molds (6) are provided with grooves (8). Each groove (8) is provided with a limit mechanism (9). The bottom of the upper die (2) is fixedly connected to two symmetrically arranged wedges (10), and the bottom of the upper die (2) is fixedly connected to a punch (11). The bottom end of the punch (11) is embedded with a guide tube (12). The two ends of the guide tube (12) extend out of the front and back of the punch (11) respectively. An L-shaped toothed plate (13) is slidably connected inside the guide tube (12). The bottom end of the L-shaped toothed plate (13) is located in front of the punch (11), and the bottom end of the L-shaped toothed plate (13) is lower than the bottom end of the punch (11). An embedded groove (14) is opened on the upper surface of the lower die (1).
2. The novel irregular metal stamping device according to claim 1, characterized in that: Each of the limiting mechanisms (9) includes a bidirectional threaded rod (901), with both ends of each bidirectional threaded rod (901) being rotatably connected to the front and rear inner walls of the adjacent slide groove (8), and both ends of each bidirectional threaded rod (901) being threadedly connected to a limiting block (902).
3. The novel irregular metal stamping device according to claim 1, characterized in that: One side of each of the two mating molds (6) is set as an inclined surface, and the bottom of each of the two wedges (10) is set as an inclined surface. Each wedge (10) is above the mating mold (6) that is close to it, and the inclination angle of the inclined surface of the wedge (10) is consistent with the inclination angle of the corresponding mating mold (6).
4. The novel irregular metal stamping device according to claim 1, characterized in that: A power rod (15) is rotatably connected to one side of the inner wall of the punch (11). A motor (16) is installed on the inner wall of the punch (11). The output end of the motor (16) is fixedly connected to one end of the power rod (15). A gear (17) is fixedly connected to the outer surface of the power rod (15). The gear (17) meshes with the L-shaped toothed plate (13).
5. A novel irregular metal stamping device according to claim 1, characterized in that: Both of the aforementioned inserts (5) are rectangular, and a spring (18) is provided between one end of each insert (5) and the reset plate (4) adjacent to it.
6. The novel irregular metal stamping device according to claim 1, characterized in that: A set of guide pillars (19) is provided between the upper mold (2) and the lower mold (1).
7. A novel irregular metal stamping device according to claim 1, characterized in that: The outer surfaces of each of the mold cavities (7) and punches (11) are polished.