A stamping die

Abstract

This utility model relates to a stamping die, including an upper die assembly and a lower die assembly. The upper die assembly includes a stamping slide assembly, which comprises a slide base fixedly connected to the upper die assembly, a main slide block slidably disposed on one side of the slide base, and sub-slide blocks embedded in grooves on both sides of the main slide block. The upper die assembly also includes two elastic ejector pin assemblies, which respectively drive the two sub-slide blocks. During the mold closing process of the upper and lower die assemblies, the elastic ejector pin assemblies drive the sub-slide blocks to apply extrusion force to the inner side of the product, causing the outer side of the product to bend. At the same time, the sub-slide blocks and the main slide block undergo relative displacement, avoiding interference between the side of the product and the main slide block. This utility model effectively solves the problems of slide block interference, poor forming, and die wear during multi-side bending in traditional stamping dies, improving the accuracy and stability of stamping.

Description

Technical Field

[0001] This utility model relates to the technical field of hardware processing molds, and more specifically, to a stamping mold. Background Technology

[0002] In existing technologies, as product structures become increasingly complex, especially for products requiring multiple side bends and featuring details such as internal convex bulges, such as... Figure 1 As shown, the traditional stamping die structure is gradually revealing many limitations.

[0003] Specifically, conventional stamping die structures in existing technologies typically feature a fixed base on the upper die assembly and a single slider structure slidably connected to this fixed base. During the product stamping process, a "first side A bend first" approach is usually adopted. That is, after the first side is bent, the convex structure on its inner surface enhances the structural strength or appearance of the product. However, when the second side B is subsequently bent, due to the single slider structure, the second side often interferes with the slider during the bending process, causing the slider to be unable to slide normally, which in turn leads to defects such as side bending deformation and empty bending of the product.

[0004] Furthermore, because the slider structure is fixed, it cannot dynamically adapt to the shape of the inner side of the product, resulting in friction or collision between the bent inner surface and the mold slider. This not only affects the molding quality of the product, but also easily causes scratches on the product surface or wear on the slider, further reducing the service life of the mold and production efficiency.

[0005] Therefore, there is an urgent need for a stamping die with a reasonable structural design that can adapt to the forming of complex structural products such as multi-sided bending and inner convex bulges, in order to solve problems such as slider interference, poor forming, and die wear in the existing technology, and improve the accuracy and stability of stamping forming. Utility Model Content

[0006] To solve the above-mentioned technical problems, this utility model provides a stamping die. By setting a stamping slider assembly with a sliding sub-slider structure, the die can dynamically adapt to the shape of the inner side of the product during the stamping process, avoiding interference between the slider and the product, thereby improving the accuracy and stability of stamping.

[0007] The technical solution adopted by this utility model to solve its technical problem is as follows: a stamping die, including an upper die assembly and a lower die assembly, wherein the upper die assembly is provided with a stamping slide assembly; the lower die assembly is provided with a feeding position for placing the product; the feeding position is provided with a forming groove corresponding to the stamping slide assembly; the stamping slide assembly includes a slide block fixedly connected to the upper die assembly; a main slide block is slidably disposed on one side of the slide block; the main slide block is provided with embedding grooves on both sides; a sub-slide block is provided in the embedding groove and slidably connected to the main slide block for engaging and abutting against the inner surface of the bent product; the upper die assembly is also provided with two elastic ejector pin assemblies respectively corresponding to the two sub-slide blocks to provide elastic force to the sub-slide blocks;

[0008] In the stamping die of this utility model, one of the slide block and the main slide block has at least one first guide groove longitudinally arranged on the outer surface of the other, and the other has a first sliding part protruding on the outer surface of the other, which slides in cooperation with the first guide groove.

[0009] In the stamping die of this utility model, the cross-section of the first sliding part gradually widens from the inside to the outside, and the thickness of the first sliding part gradually decreases from top to bottom and outward; the shape of the first guide groove is adapted to the outer contour of the first sliding part.

[0010] In the stamping die of this utility model, the sliding side of the embedded groove is a first inclined surface that slopes inward and downward; the sliding surface of the sub-slider facing the main slider is a second inclined surface that cooperates with the first inclined surface; and the mating surface of the sub-slider that mats with the side of the product is a vertical surface.

[0011] In the stamping die of this utility model, one of the first inclined surface and the second inclined surface has at least one second guide groove longitudinally arranged on its outer surface, and the other has a corresponding protruding second sliding part that slides in cooperation with the second guide groove on its outer surface.

[0012] In the stamping die of this utility model, the sum of the lengths of the main slider and the two sub-sliders is not greater than the length of the slide block;

[0013] The stamping die of this utility model further includes a guide component between the upper die assembly and the lower die assembly;

[0014] The stamping die of this utility model includes an upper die assembly comprising an upper die base, an upper backing plate, and an upper template arranged sequentially from top to bottom; the stamping slider assembly is mounted on the upper template.

[0015] The stamping die of this utility model includes a lower die assembly comprising a lower die base, a lower backing plate, and a bending die arranged sequentially from bottom to top; a forming groove is disposed on the bending die; a lower stripper plate supporting the product is fixedly disposed on the inner bottom surface of the forming groove; and the upper surface of the lower stripper plate is lower than the upper surface of the bending die.

[0016] The stamping die of this utility model includes an upper die assembly that separates the product from the stamping slide assembly; and a clearance channel on the slide block for the ejector pins of the ejector pin assembly to pass through.

[0017] The beneficial effects of this utility model are as follows: The stamping die has a simple structure and ingenious design. During the mold closing process of the upper and lower die components, the elastic ejector pins on the upper die component drive the sub-sliders embedded on both sides of the main slide block to apply extrusion force to the inner side of the product, causing the outer side of the product to bend. During the bending process, the sub-sliders and the main slide block undergo relative displacement, thereby effectively avoiding the interference problem between the product side and the slide block caused by the simple slide block structure in traditional molds. This structural design not only enables high-precision forming of complex structures such as multi-sided bending and inner convex bulges, but also significantly reduces friction and collision between the slide block and the product, reduces scratches on the product surface and mold wear, and improves mold life and production efficiency. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the present invention will be further described below in conjunction with the accompanying drawings and embodiments. The drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the structure of a product formed by stamping and bending in the background art;

[0020] Figure 2 This is a cross-section of a stamping die according to a preferred embodiment of the present invention. Figure 1 (Stamping die in open state);

[0021] Figure 3 This is a cross-section of a stamping die according to a preferred embodiment of the present invention. Figure 2 (Stamping die closed state);

[0022] Figure 4 This is a schematic diagram of the state structure of the stamping slider assembly 30 according to a preferred embodiment of the present invention. Figure 1 ;

[0023] Figure 5This is a schematic diagram of the state structure of the stamping slider assembly 30 according to a preferred embodiment of the present invention. Figure 2 . Detailed Implementation

[0024] The terms "first," "second," "third," and "fourth," etc., used in the specification, claims, and accompanying drawings of this invention are used to distinguish different objects, not to describe a specific order. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion. For example, a process, method, system, product, or apparatus that includes a series of steps or units is not limited to the listed steps or units, but may optionally include steps or units not listed, or may optionally include other steps or units inherent to these processes, methods, products, or apparatuses.

[0025] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of the invention. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0026] "Multiple" refers to two or more. "And / or" describes the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A alone, A and B simultaneously, or B alone. The character " / " generally indicates that the preceding and following related objects have an "or" relationship.

[0027] Furthermore, the terms indicating orientation, such as "up, down, front, back, left, right, upper end, lower end, longitudinal," etc., are all based on the posture and position of the device or equipment described in this solution during normal use.

[0028] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, a clear and complete description will be provided below in conjunction with the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the protection scope of the present invention.

[0029] A preferred embodiment of the present invention provides a stamping die, such as... Figure 2-5As shown, the assembly includes an upper die assembly 10 and a lower die assembly 20. The upper die assembly 10 has a stamping slider assembly 30. In this embodiment, the stamping slider assembly 30 has a rectangular structure. The lower die assembly 20 has a feeding position 21 for placing the product in its initial state. The product in its initial state is in an unfolded planar state. The feeding position 21 has a forming groove 22 corresponding to the stamping slider assembly 30. The forming groove 22 has a rectangular structure. The stamping slider assembly 30 includes a slide block 31 fixedly connected to the upper die assembly 10. A main slider 32 is slidably disposed on one side of the slide block 31. Embedding grooves 33 are respectively provided on both sides of the main slider 32. The upper mold assembly 10 includes sub-slider 34 slidably connected to the main slide block 32, used to engage with the inner surface of the bent product. The upper mold assembly 10 also includes two elastic ejector pin assemblies 11, each corresponding to one of the sub-slider 34, to provide elastic force to the sub-slider 34. By setting sub-sliders embedded on both sides of the main slide block and providing elastic force through the elastic ejector pin assemblies, the sub-sliders undergo relative displacement with the main slide block during mold closing, effectively avoiding interference and improving the stability of the bending process. Furthermore, the engagement of the sub-sliders with the inner surface of the product reduces direct contact between the slide block and the outer surface of the product, significantly reducing friction and collision, and minimizing mold wear. In this embodiment, the elastic ejector pin assembly 11 includes a vertically downward-pointing first ejector pin 111 and a spring 112 connecting the first ejector pin and the upper mold assembly 10.

[0030] This stamping die features a simple yet ingenious structure. During the mold closing process between the upper and lower die components, elastic ejector pins on the upper die component drive sub-sliders embedded on both sides of the main slide block to apply pressure to the inner side of the product, causing the outer side of the product to bend. During bending, relative displacement occurs between the sub-sliders and the main slide block, effectively avoiding the interference problem between the product's side and the slide block caused by the simple slide block structure in traditional dies. This structural design not only enables high-precision forming of complex structures such as multi-sided bending and products with internal protrusions, but also significantly reduces friction and collision between the slide block and the product, minimizing surface scratches and die wear, thus improving die life and production efficiency.

[0031] Furthermore, at least one first guide groove 311 is longitudinally provided on the outer surface of the slide block 31, and a corresponding first sliding part 321 is protruding on the outer surface of the main slider 32, which slides in cooperation with the first guide groove 311. Optionally, the first guide groove 311 can also be provided on the main slider 32, and the first sliding part 321 can be provided on the slide block 31; the above simple position substitutions are all within the protection scope of this utility model. The cooperation of the first guide groove 311 and the first sliding part 321 forms a high-precision guiding structure, ensuring that the main slider 32 slides smoothly along a predetermined trajectory on the slide block 31, avoiding deviation or shaking of the slider during bending. Through this mechanical guidance and limiting, the trajectory deviation of the slider due to uneven force or impact is effectively prevented, thereby ensuring the accuracy of the bending angle and position. It is worth noting that the first guide groove 311 and the first sliding part 321 can be made of wear-resistant materials or surface hardening treatment to extend the service life between the slider and the slide block and reduce the increase in gap or failure due to wear.

[0032] Furthermore, the cross-section of the first sliding part 321 gradually widens from the inside to the outside, and the thickness of the first sliding part 321 gradually decreases from top to bottom and outwards; the shape of the first guide groove 311 is adapted to the outer contour of the first sliding part 321. The gradual widening of the first sliding part 321 from the inside to the outside increases the contact area with the guide groove 311 during sliding, thereby improving the stability and guiding accuracy of sliding; the gradual decrease in thickness of the first sliding part 321 from top to bottom gives the sliding part a certain guiding effect during sliding, reducing the possibility of sliding jamming or deviation, and achieving a smoother sliding process.

[0033] Furthermore, the sliding side of the insert groove 33 is a first inclined surface 322 that slopes inward and downward; the sliding surface of the sub-slider 34 facing the main slide block 32 is a second inclined surface 341 that cooperates with the first inclined surface 322; the mating surface of the sub-slider 34 that mats with the side of the product is a vertical surface 342. The inclined surface structure has a certain "locking" effect on the sub-slider during the sliding process, which can prevent the slide block from coming out of the insert groove due to excessive impact force during high-pressure stamping, thereby improving the safety of mold operation; and the setting of the vertical surface 342 enhances the contact rigidity between the sub-slider and the product, so that the mold maintains good structural stability during the stamping process.

[0034] The cooperation of the first inclined surface 322 and the second inclined surface 341 ensures that the sub-slider 34 is guided by a force during sliding, allowing it to slide smoothly along a predetermined trajectory and ensuring synchronous and stable relative movement between the sub-slider and the main slide. The contact surface between the sub-slider 34 and the inner surface of the product is a vertical surface 342, providing uniform and vertical extrusion force. This concentrates and stabilizes the force on the product during bending, improving bending accuracy and forming quality. The combination of the inclined surface structure and the vertical contact surface allows the slider assembly to achieve high-precision sliding and effective contact within a limited space, facilitating a compact overall mold design.

[0035] For products with complex structures such as multiple side bends and inner protrusions, this structural design ensures that the slider fits tightly against the inside of the product during sliding, effectively controlling the bending angle and shape, and avoiding product deformation or poor forming.

[0036] Furthermore, at least one second guide groove 323 is longitudinally provided on the outer surface of the first inclined surface 322, and a second sliding part 343 correspondingly protrudes from the outer surface of the second inclined surface 341 to slide in cooperation with the second guide groove 323. Alternatively, the second guide groove 323 may also be provided on the second inclined surface 341, and the second sliding part 343 may be provided on the first inclined surface 322.

[0037] The cooperation between the second guide groove 323 and the second sliding part 343 forms a high-precision guiding structure, ensuring that the sub-slider 34 slides smoothly along a predetermined trajectory within the embedding groove 33 of the main slider 32, avoiding deviation or wobbling during the sliding process. For products with complex structures such as multiple side bends or inner protrusions, this structural design ensures that the sub-slider fits tightly against the inner side of the product during the sliding process, effectively controlling the bending angle and shape, and preventing product deformation or poor forming.

[0038] Furthermore, the sum of the lengths of the main slider 32 and the two sub-sliders 34 does not exceed the length of the slide block 31. By limiting the total length of the main slider and the two sub-sliders to not exceed the length of the slide block, it is ensured that the entire stamping slider assembly 30 slides and is positioned within the range of the slide block 31, preventing the slider from exceeding the range of the slide block during sliding, thereby achieving a more compact mold structure design. If the total length of the slider exceeds the length of the slide block, it may cause the slider to deviate, jam, or interfere during sliding. This application ensures that the slider slides within the range of the slide block by limiting the length, thus avoiding such problems.

[0039] To provide precise alignment guidance during the closing process of the upper die assembly 10 and the lower die assembly 20, and to ensure the consistency of the positions of the upper and lower dies during the stamping process, a guide assembly 40 is also provided between the upper die assembly 10 and the lower die assembly 20. The guide assembly 40 is a guide post structure in the prior art.

[0040] Furthermore, the upper mold assembly 10 includes an upper mold base 101, an upper backing plate 102, and an upper template 103 arranged sequentially from top to bottom; the stamping slide assembly 30 is mounted on the upper template 103. Dividing the upper mold assembly 10 into the upper mold base 101, the upper backing plate 102, and the upper template 103 facilitates modular mold design, making it easier to independently process, assemble, and replace each part. When the stamping slide assembly 30 or the upper template 103 becomes worn or damaged, the upper template 103 can be replaced individually without replacing the entire upper mold assembly, greatly reducing maintenance costs and time.

[0041] Furthermore, the lower mold assembly 20 includes a lower mold base 201, a lower pad 202, and a bending die 203 arranged sequentially from bottom to top; the bending die 203 has a rectangular structure; the structure is clearly layered. A forming groove 22 is disposed on the bending die 203; a lower ejector plate 204 supporting the product is fixedly disposed on the inner bottom surface of the forming groove 22; the upper surface of the lower ejector plate 204 is lower than the upper surface of the bending die 203. After the product is formed, the lower ejector plate 204 can first contact the bottom of the product, facilitating subsequent demolding operations and reducing friction and adhesion between the product and the mold.

[0042] By designing the lower die assembly 20 as a layered structure consisting of a lower die base 201, a lower backing plate 202, and a bending die 203, and by setting a lower ejector plate 204 within the forming groove 22, with the upper surface of the lower ejector plate 204 being lower than the upper surface of the bending die 203, not only is the structural clarity, forming accuracy, and demolding performance of the die improved, but the stability, durability, and adaptability of the die are also enhanced. This structural design has significant engineering value and practical significance for achieving high-precision and high-efficiency stamping forming of complex structural products.

[0043] Furthermore, the upper mold assembly 10 is also provided with a stripper pin assembly 50 for separating the product from the stamping slide assembly 30; the slide block 31 is provided with a clearance channel for the ejector pins of the stripper pin assembly 50 to pass through. The clearance channel allows the ejector pins of the stripper pin assembly 50 to pass smoothly through the slide block 31, avoiding jamming or damage to the ejector pins due to structural interference. The above structure not only improves the rationality of the mold structure, but also facilitates the arrangement and maintenance of the ejector pin assembly, and improves the overall assembly accuracy and space utilization of the mold.

[0044] By using the ejector pin assembly 50 to promptly eject the product from the slider, the dwell time of the product on the slider can be reduced, friction and wear on the slider surface can be reduced, the cleanliness and surface smoothness of the slider can be maintained, the service life of the slider can be extended, and the overall stability and reliability of the mold operation can be improved.

[0045] It should be understood that those skilled in the art can make improvements or modifications based on the above description, and all such improvements and modifications should fall within the protection scope of the appended claims.

Claims

1. A stamping die, comprising an upper die assembly and a lower die assembly, characterized in that, The upper die assembly is provided with a stamping slide assembly; the lower die assembly is provided with a feeding position for placing the product; the feeding position is provided with a forming groove corresponding to the stamping slide assembly; the stamping slide assembly includes a slide base fixedly connected to the upper die assembly; a main slide block is slidably disposed on one side of the slide base; the main slide block is provided with an inserting groove on both sides; a sub-slide block is provided in the inserting groove and slidably connected to the main slide block for engaging with the inner surface of the bent product; the upper die assembly is also provided with two elastic ejector pin assemblies corresponding to the two sub-slide blocks to provide elastic force to the sub-slide blocks.

2. The stamping die according to claim 1, characterized in that, Of the slide block and the main slider, one of them has at least one first guide groove longitudinally arranged on its outer surface, and the other has a corresponding protruding first sliding part that slides in cooperation with the first guide groove on its outer surface.

3. The stamping die according to claim 2, characterized in that, The cross-section of the first sliding part gradually widens from the inside to the outside, and the thickness of the first sliding part gradually decreases from top to bottom and outward; the shape of the first guide groove is adapted to the outer contour of the first sliding part.

4. The stamping die according to any one of claims 1-3, characterized in that, The sliding side of the embedded groove is a first inclined surface that slopes inward and downward; the sliding surface of the sub-slider facing the main slider is a second inclined surface that cooperates with the first inclined surface; the mating surface of the sub-slider that mats with the side of the product is a vertical surface.

5. The stamping die according to claim 4, characterized in that, Of the first inclined surface and the second inclined surface, one of them has at least one second guide groove longitudinally arranged on its outer surface, and the other has a corresponding protrusion on its outer surface that slides in cooperation with the second guide groove.

6. The stamping die according to claim 1, characterized in that, The sum of the lengths of the main slider and the two sub-sliders is not greater than the length of the slide block.

7. The stamping die according to any one of claims 1-3 and 5-6, characterized in that, A guide component is also provided between the upper mold assembly and the lower mold assembly.

8. The stamping die according to claim 1, characterized in that, The upper mold assembly includes an upper mold base, an upper pad, and an upper template arranged sequentially from top to bottom; the stamping slider assembly is mounted on the upper template.

9. The stamping die according to claim 1, characterized in that, The lower mold assembly includes a lower mold base, a lower pad, and a bending die arranged sequentially from bottom to top; the forming groove is disposed on the bending die; a lower stripper plate supporting the product is fixedly disposed on the inner bottom surface of the forming groove; the upper surface of the lower stripper plate is lower than the upper surface of the bending die.

10. The stamping die according to claim 1, characterized in that, The upper mold assembly is further provided with a stripping ejector assembly for separating the product from the stamping slide assembly; the slide block is provided with a clearance channel for the ejector pins of the stripping ejector assembly to pass through.

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