Stamping die with auxiliary demolding structure for automobile parts

Abstract

The utility model relates to stamping die technical field especially having the auxiliary stripping structure's automobile accessory work piece stamping die, solved the prior art in the mode of single point contact and jacking, will exert greater pressure to the local area of automobile accessories, is easy to cause the work piece surface to appear the problem of indentation, scratch even deformation. Having the auxiliary stripping structure's automobile accessory work piece stamping die, including bottom plate and top plate, the top plate is connected at the top of bottom plate through the support column, is set up with the moving groove and the ejection groove on the top plate, is equipped with the clamping block and the sliding block in the moving groove, and the automatic adjustment and positioning of clamping block are realized in cooperation reset spring and push cylinder, is equipped with the ejection column in the ejection groove, and the ejection column is connected through the guide rod and the lifting column. The utility model through the flexible clamping structure of multiple point synchronous ejection, make the demoulding stress more uniform, avoid local stress concentration, effectively prevent work piece surface damage and deformation, have promoted the demoulding efficiency and product quality.

Description

Technical Field

[0001] This utility model relates to the field of stamping die technology, and in particular to a stamping die for automotive parts with an auxiliary demolding structure. Background Technology

[0002] Automotive parts (hereinafter referred to as auto parts) are essential basic components forming various systems and parts of a car, widely used in many key areas such as engines, chassis, bodies, and auxiliary equipment. To meet the high strength, lightweight, and high precision requirements of automobiles, auto parts typically require stamping processes for forming. As the core equipment for this process, the structural design and demolding efficiency of stamping dies directly affect the forming quality, production efficiency, and product appearance integrity. Especially in the processing of complex shapes or high-strength materials, the demolding capability of stamping dies becomes one of the key factors influencing overall production efficiency.

[0003] An existing stamping table for automotive parts (see utility model patent CN 220920715 U) includes a main body with several support blocks mounted on its top. Each support block has a round shaft installed in its inner cavity, and a stamping table is mounted on one end of each shaft. A rectangular groove is formed on the top of the stamping table, and several sliding grooves are formed on the outer side of the rectangular groove. A limit mechanism is installed in the inner cavity of each sliding groove. An electric push rod is used; after the automotive part is stamped, the electric push rod is activated, and its extension rod drives the connecting shaft, connecting block, and top block to move upwards, lifting the stamped automotive part for easy removal by workers. However, in practical applications, although this structure achieves automatic ejection, it still has significant technical defects: its single-point contact and lifting method applies considerable pressure to localized areas of the automotive part, easily causing indentations, scratches, or even deformation on the workpiece surface. This damage is almost unavoidable, especially for automotive parts requiring high surface finish, with fragile structures, or complex shapes.

[0004] Therefore, to address the shortcomings of existing technologies, we urgently need a stamping die for auto parts with an auxiliary demolding structure to solve this problem. This new die should effectively avoid workpiece damage caused by single-point ejection, improve the uniformity and stability of the demolding process, and possess good adaptability, thereby significantly improving the efficiency, yield, and automation level of stamping production, providing strong support for the high-quality development of the auto parts manufacturing industry. Utility Model Content

[0005] The purpose of this invention is to provide a stamping die for auto parts with an auxiliary demolding structure, which solves the problem that the existing single-point contact and lifting method applies great pressure to local areas of auto parts, which can easily cause indentations, scratches or even deformation on the surface of the workpiece.

[0006] To achieve the above objectives, this utility model provides a stamping die for auto parts with an auxiliary demolding structure, including a base plate and a top plate. The top plate is connected to the top of the base plate by a number of support columns. The top of the top plate has four moving slots arranged in a ring along the circumferential direction of the top plate. An ejection slot is provided on the top of the top plate between every two adjacent moving slots.

[0007] Each of the moving slots is provided with a clamping block at the top. The bottom of the clamping block is slidably engaged with the inside of the moving slot through a sliding member. One side of the sliding member is elastically connected to one side of the inner wall of the moving slot through an elastic pulling structure, and the other side is connected to the other side of the inner wall of the moving slot through a pulling structure.

[0008] The bottom of the top plate is provided with a lifting plate, and each of the ejector slots is slidably connected with an ejector column. The bottom end of each ejector column is connected to the top of the lifting plate. The lifting plate is connected to the bottom of the top plate through a vertical lifting structure.

[0009] The vertical lifting structure includes a lifting cylinder, the output end of which is connected to the top of the lifting plate.

[0010] The sliding component includes a slider that slides inside the moving groove, and the top of the slider is bolted to the bottom of the clamping block.

[0011] Each of the ejector columns is equipped with a lifting column at its bottom. The bottom end of the lifting column is connected to the side wall of the lifting plate via a connecting rod. The top end of the lifting column is provided with a lifting hole. The bottom of the ejector column is fixedly connected with a guide rod that slides with the lifting hole. Several compression springs are arranged around the guide rod. One end of the compression spring is connected to the bottom of the ejector column, and the other end is connected to the top of the lifting column.

[0012] The elastic tension structure includes a return spring, one end of which is connected to the inner wall of the moving groove, and the other end is connected to the side wall of the slider.

[0013] The pulling structure includes a push cylinder, a round rod, and a vertical plate. The push cylinder is connected to the bottom of the top plate. One end of the round rod is connected to a slider, and the other end slides through the top plate and connects to the vertical plate. The output end of the push cylinder is connected to the bottom end of the vertical plate.

[0014] This utility model discloses a stamping die for automotive parts with an auxiliary demolding structure. It solves the problem of defects such as indentations, scratches, and even deformation on the workpiece surface caused by single-point ejection in existing technologies. By setting multiple ejection columns in conjunction with a lifting plate and a vertical lifting structure, multi-point synchronous ejection is achieved, significantly improving the uniformity and stability of force during demolding and reducing the risk of product damage caused by excessive local pressure. Simultaneously, the cooperation of the clamping block with the moving groove, sliding parts, elastic traction structure, and pulling structure allows the clamping block to flexibly adjust its position on the top plate. This not only improves the die's adaptability to workpieces of different specifications but also enhances its support and protection capabilities for the workpiece during demolding, avoiding the offset, tilting, or jamming phenomena that may occur in traditional demolding methods. Furthermore, the overall structure is compact and easy to operate, helping to improve the automation level and production efficiency of stamping production lines, reduce manual intervention, lower maintenance costs, and extend equipment lifespan, demonstrating good application prospects and promotional value. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below.

[0016] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the present utility model.

[0017] Figure 2 This is a structural schematic diagram of the base plate and top plate of an embodiment of this utility model.

[0018] Figure 3 This is a schematic diagram of the lifting cylinder and the pushing cylinder of this utility model embodiment.

[0019] Figure 4 This is a schematic diagram of the structure of the upright plate and the round rod in an embodiment of this utility model.

[0020] Figure 5 This is a structural schematic diagram of the lifting column and lifting hole according to an embodiment of the present utility model.

[0021] In the diagram: 1. Base plate; 2. Top plate; 3. Ejection slot; 4. Ejection column; 5. Clamping block; 6. Moving slot; 7. Lifting plate; 8. Lifting cylinder; 9. Pushing cylinder; 10. Vertical plate; 11. Round rod; 12. Slider; 13. Return spring; 14. Connecting rod; 15. Lifting column; 16. Lifting hole; 17. Compression spring; 18. Guide rod. Detailed Implementation

[0022] The embodiments of the present invention are described in detail below. Examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, but should not be construed as limiting the present invention.

[0023] Example 1

[0024] Please see Figure 1-5 As shown, a stamping die for auto parts with an auxiliary demolding structure in this embodiment includes a base plate 1 and a top plate 2. The top plate 2 is connected to the top of the base plate 1 by several support columns. The top of the top plate 2 has four moving slots 6 arranged in a ring along the circumferential direction of the top plate 2. An ejection slot 3 is provided on the top of the top plate 2 between every two adjacent moving slots 6.

[0025] Each moving groove 6 is provided with a clamping block 5 at its top. The bottom of the clamping block 5 is slidably engaged with the inside of the moving groove 6 through a sliding member. One side of the sliding member is elastically connected to one side of the inner wall of the moving groove 6 through an elastic pulling structure, and the other side is connected to the other side of the inner wall of the moving groove 6 through a pulling structure.

[0026] The bottom of the top plate 2 is provided with a lifting plate 7. Each ejection slot 3 is slidably connected with an ejection column 4. The bottom end of each ejection column 4 is connected to the top of the lifting plate 7. The lifting plate 7 is connected to the bottom of the top plate 2 through a vertical lifting structure.

[0027] After the auto parts are stamped, the lifting plate 7 is first driven upward by the vertical lifting structure. Since the bottom end of each ejector pin 4 is connected to the top of the lifting plate 7, as the lifting plate 7 rises, multiple ejector pins 4 move upward synchronously and extend from the ejector groove 3 at the top of the top plate 2, applying a uniform upward ejection force to the bottom of the workpiece, initially separating the workpiece from the mold cavity. At the same time, at the top of the top plate 2, the clamping block 5 slides with the moving groove 6 through the sliding part, maintaining a certain pre-tight state under the action of the elastic tension structure. The pulling structure can be adjusted or released according to actual needs, so that the clamping block 5 can slide and adjust its position along the moving groove 6 according to the shape of the workpiece, thereby achieving adaptive clamping and positioning of workpieces of different sizes and shapes. During the demolding process, the multi-point coordinated ejection method of the ejector pins 4 combined with the flexible clamping function of the clamping block 5 works together on the workpiece, making the force more uniform and avoiding surface damage and deformation caused by local stress concentration, thereby achieving efficient, stable and non-destructive demolding operation.

[0028] Example 2

[0029] Please see Figure 1-5As shown in the figure, this embodiment of a stamping die for automotive parts with an auxiliary demolding structure includes a vertical lifting structure comprising a lifting cylinder 8. The output end of the lifting cylinder 8 is connected to the top of the lifting plate 7. Specifically, through the cooperation between the lifting cylinder 8 and the lifting plate 7, after stamping is completed, the lifting cylinder 8 is activated, and its output end pushes the lifting plate 7 upward, thereby causing multiple ejector pins 4 to rise synchronously and extend from the ejector slots 3 on the top plate 2, uniformly ejecting the bottom of the workpiece at multiple points. This structure realizes automated control of the demolding action, improves the stability and consistency of the ejection process, avoids the problem of uneven force caused by traditional single-point ejection, and effectively prevents defects such as scratches and deformation on the workpiece surface.

[0030] Each ejector column 4 has a lifting column 15 at its bottom. The bottom end of the lifting column 15 is connected to the side wall of the lifting plate 7 via a connecting rod 14. The top of the lifting column 15 has a lifting hole 16. The bottom of the ejector column 4 is fixedly connected to a guide rod 18 that slides in cooperation with the lifting hole 16. Several compression springs 17 are arranged around the guide rod 18. One end of the compression spring 17 is connected to the bottom of the ejector column 4, and the other end is connected to the top of the lifting column 15. Specifically, through the cooperation of the ejector column 4, the lifting column 15, the guide rod 18, and the compression springs 17, during the rising process of the lifting plate 7, the ejector column 4 slides in the lifting hole 16 through the guide rod 18 and compresses the compression springs 17, so that the ejector column 4 has a certain buffering effect when contacting the workpiece, avoiding damage to the workpiece caused by rigid impact. This structure not only enhances the flexibility and stability of the demolding process, but also automatically adjusts the ejection force according to the actual height of the workpiece, further improving the safety and applicability of the mold.

[0031] Example 3

[0032] Please see Figure 1-5 As shown in the figure, this embodiment of a stamping die for automotive parts with an auxiliary demolding structure includes a sliding component comprising a slider 12 that slides within a moving groove 6. The top of the slider 12 is bolted to the bottom of a clamping block 5. Specifically, through the cooperation of the slider 12 with the moving groove 6 and the clamping block 5, the clamping block 5 can slide and adjust its position circumferentially within the moving groove 6, and is fixed in a suitable position by bolts, thereby adapting to automotive parts of different sizes and shapes. This structure improves the versatility and flexibility of the die, makes clamping and positioning more precise, helps to improve the stability and safety during the demolding process, and reduces the risk of workpiece displacement or detachment due to improper clamping.

[0033] The elastic tension structure includes a return spring 13. One end of the return spring 13 is connected to the inner wall of the moving groove 6, and the other end is connected to the side wall of the slider 12. Specifically, through the cooperation between the return spring 13 and the slider 12, the clamping block 5 can automatically return to its initial position when not subjected to external force, forming a pre-tightened state, thereby quickly adhering to the workpiece surface in the next clamping operation. This structure improves the response speed and adaptability of the clamping action, reduces the frequency of manual intervention, and ensures the stability and consistency of clamping, thus helping to improve overall production efficiency and product quality.

[0034] The pulling structure includes a push cylinder 9, a round rod 11, and a vertical plate 10. The push cylinder 9 is connected to the bottom of the top plate 2. One end of the round rod 11 is connected to the slider 12, and the other end slides through the top plate 2 and connects to the vertical plate 10. The output end of the push cylinder 9 is connected to the bottom end of the vertical plate 10. Specifically, through the cooperative arrangement of the push cylinder 9, the round rod 11, and the vertical plate 10, when the position of the clamping block 5 needs to be adjusted, the push cylinder 9 is activated, and its output end pushes the vertical plate 10 to move. This, in turn, drives the slider 12 to slide within the moving groove 6 via the round rod 11, achieving precise adjustment of the position of the clamping block 5. This structure realizes automated control of the position adjustment of the clamping block 5, improves operational convenience and accuracy, and is especially suitable for flexible production needs of multiple varieties and small batches, significantly improving the adaptability and efficiency of the mold.

[0035] In the stamping die for auto parts with an auxiliary demolding structure provided by this utility model, the complete working process is as follows: After the auto parts are stamped, the lifting cylinder 8 in the vertical lifting structure is activated first, and its output end pushes the lifting plate 7 upward. Since the bottom of multiple ejector pins 4 are connected to the lifting pin 15 through guide rods 18, and the lifting pin 15 is fixed to the lifting plate 7 through connecting rods 14, as the lifting plate 7 rises, each ejector pin 4 extends synchronously from the ejection slot 3 at the top of the top plate 2. During this process, the guide rod 18 at the bottom of the ejector pin 4 slides in the lifting hole 16 at the top of the lifting pin 15 and compresses the compression spring 17 set around it, thereby generating a certain buffering effect when contacting the workpiece, avoiding damage to the workpiece from rigid impact. At the same time, at the top of the top plate 2, four clamping blocks 5 are respectively connected to the top plate 2 through sliders 12. Four circular arrayed moving slots 6 slide in cooperation. One side of the slider 12 is elastically connected to the inner wall of the moving slot 6 through a return spring 13, while the other side is adjusted by a pulling structure consisting of a push cylinder 9, a round rod 11, and a vertical plate 10. When the push cylinder 9 is activated, its output end pushes the vertical plate 10 to move, which in turn drives the round rod 11 and the slider 12 connected to it to slide along the moving slot 6, so that the clamping block 5 automatically adjusts to the appropriate position according to the shape of the workpiece and clamps the edge area of ​​the workpiece. When the clamping block 5 is not subjected to external force, it can return to its original position by the elastic force of the return spring 13, forming a pre-tight state and improving the response speed. During the demolding process, the multi-point coordinated ejection action of the ejector pin 4 combined with the flexible clamping function of the clamping block 5 works together on the workpiece, making the force more uniform and avoiding surface scratches and deformation caused by local stress concentration, thereby achieving efficient, stable and non-destructive demolding operation.

[0036] The mold structure is rationally designed, fully considering the problems of single-point ejection in existing technologies, which easily leads to defects such as indentations, scratches, and even deformation on the workpiece surface. By setting multiple ejection columns 4 and cooperating with lifting plates 7, lifting cylinders 8, lifting columns 15, guide rods 18, and compression springs 17, multi-point synchronous ejection is achieved, significantly improving the uniformity and stability of force during demolding and reducing the risk of product damage caused by excessive local pressure. At the same time, the cooperation between the clamping block 5 and the slider 12, moving groove 6, return spring 13, pushing cylinder 9, round rod 11, and vertical plate 10 allows the clamping block to be flexibly adjusted on the top plate 2. The positioning not only improves the mold's adaptability to workpieces of different specifications, but also enhances the support and protection of the workpiece during demolding, avoiding the offset, tilting, or jamming that may occur in traditional demolding methods. In addition, the buffer structure composed of the guide rod 18 at the bottom of the ejector column 4, the lifting hole 16, and the compression spring 17 gives the ejection process a certain degree of self-adjustment capability, which can effectively cope with the demolding problem caused by differences in workpiece height. The method of driving the cylinder 9 to drive the round rod 11 and the vertical plate 10 to control the movement of the clamping block 5 realizes the automated adjustment of clamping and positioning, reduces manual intervention, and improves production efficiency.

[0037] The above-disclosed embodiments are merely one or more preferred embodiments of this application and should not be construed as limiting the scope of this application. Those skilled in the art can understand that all or part of the processes for implementing the above embodiments and equivalent changes made in accordance with the claims of this application still fall within the scope of this application.

Claims

1. A stamping die for automotive parts with an auxiliary demolding structure, characterized in that, include: The bottom plate and the top plate are connected to the top of the bottom plate by several support columns. The top of the top plate has four moving slots arranged in a ring along the circumference of the top plate. The top of the top plate also has an ejection slot between every two adjacent moving slots. Each of the moving slots is provided with a clamping block at the top. The bottom of the clamping block is slidably engaged with the inside of the moving slot through a sliding member. One side of the sliding member is elastically connected to one side of the inner wall of the moving slot through an elastic pulling structure, and the other side is connected to the other side of the inner wall of the moving slot through a pulling structure. The bottom of the top plate is provided with a lifting plate, and each of the ejector slots is slidably connected with an ejector column. The bottom end of each ejector column is connected to the top of the lifting plate. The lifting plate is connected to the bottom of the top plate through a vertical lifting structure.

2. The stamping die for automotive parts with an auxiliary demolding structure according to claim 1, characterized in that, The vertical lifting structure includes a lifting cylinder, the output end of which is connected to the top of the lifting plate.

3. The stamping die for automotive parts with an auxiliary demolding structure according to claim 1, characterized in that, The slider includes a slider that slides inside the moving groove, and the top of the slider is bolted to the bottom of the clamping block.

4. The stamping die for automotive parts with an auxiliary demolding structure according to claim 2, characterized in that, Each ejector column is equipped with a lifting column at its bottom. The bottom end of the lifting column is connected to the side wall of the lifting plate via a connecting rod. The top end of the lifting column is provided with a lifting hole. The bottom of the ejector column is fixedly connected with a guide rod that slides in cooperation with the lifting hole. Several compression springs are arranged around the guide rod. One end of the compression spring is connected to the bottom of the ejector column, and the other end is connected to the top of the lifting column.

5. A stamping die for automotive parts with an auxiliary demolding structure according to claim 3, characterized in that, The elastic tension structure includes a return spring, one end of which is connected to the inner wall of the moving groove, and the other end is connected to the side wall of the slider.

6. A stamping die for automotive parts with an auxiliary demolding structure according to claim 5, characterized in that, The pulling structure includes a push cylinder, a round rod, and a vertical plate. The push cylinder is connected to the bottom of the top plate. One end of the round rod is connected to a slider, and the other end slides through the top plate and is connected to the vertical plate. The output end of the push cylinder is connected to the bottom end of the vertical plate.

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