Die structure for improving planeness of stamping product

Abstract

The utility model relates to the technical field of stamping dies, in particular to a die structure capable of improving flatness of stamped products, which comprises a base, a working table is fixedly mounted on the upper surface of the base, a top plate is fixedly mounted above the base through a support, and a split stamping structure is arranged between the working table and the top plate. The split stamping structure achieves multi-time stamping in the plate stamping process through the first stamping head, the second stamping head and the third stamping head. According to the die structure capable of improving the flatness of the stamped product, a split stamping structure composed of the first stamping head, the second stamping head and the third stamping head is arranged in the die structure, plate materials are stamped in a graded mode, and therefore semi-blanking is achieved in the stamping process of a workpiece, the workpiece is still connected with a material belt after semi-blanking, and the flatness of the stamped product is improved. And the position deviation of the workpiece in the machining process is reduced, so that the machining precision and the dimensional stability of the workpiece are improved, and the flatness of a product is guaranteed.

Description

Technical Field

[0001] This utility model relates to the field of stamping die technology, specifically to a die structure for improving the flatness of stamped products. Background Technology

[0002] Stamping dies are a type of process equipment used for pressure processing. With the help of the pressure provided by the press, materials such as sheet metal, strips, and slabs are plastically deformed and separated within the die cavity to obtain parts or products with specific shapes, sizes, and properties.

[0003] Existing stamping dies typically form sheet metal workpieces sequentially. However, in the case of single-stage stamping dies, the sheet metal is subjected to concentrated pressure instantaneously during use, resulting in uneven stress distribution and potentially significant internal stress. This can lead to warping, twisting, and other deformations in the product, making it difficult to guarantee flatness and ultimately affecting product quality. Utility Model Content

[0004] The purpose of this invention is to provide a mold structure that improves the flatness of stamped products. This device uses a split punch structure to perform multiple stamping processes on sheet metal to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a mold structure for improving the flatness of stamped products, including a base, a worktable fixedly installed on the upper surface of the base, a top plate fixedly installed above the base by a bracket, and a split stamping structure provided between the worktable and the top plate. The split stamping structure realizes the stamping of the sheet metal in stages through a first stamping head, a second stamping head, and a third stamping head. The split stamping structure includes a first stamping head, a second stamping head, and a third stamping head.

[0006] Preferably, the first stamping head has an arc-shaped structure, and a stamping punch is provided on the lower surface of the first stamping head. A second stamping head and a third stamping head are respectively provided at both ends of the first stamping head. The second stamping head has an arc-shaped structure, and a stamping punch is provided on the lower surface of the second stamping head. The third stamping head has an arc-shaped structure, and a stamping punch is provided on the lower surface of the third stamping head.

[0007] Using the above technical solution, the stamping process of the workpiece can be realized sequentially by using the No. 1 stamping head, the No. 2 stamping head, and the No. 3 stamping head.

[0008] Preferably, the No. 1 stamping head, the No. 2 stamping head, and the No. 3 stamping head together constitute a ring-shaped split stamping structure.

[0009] By adopting the above technical solution, the workpiece can be blanked by stamping using a ring-shaped split stamping structure.

[0010] Preferably, a driving structure is provided on the upper surface of the split stamping structure. The driving structure drives the different stamping punches in the split stamping structure one by one through cylinders one, two and three.

[0011] By adopting the above technical solution, the driving structure can be used to drive different stamping punches one after another.

[0012] Preferably, the drive structure includes a first cylinder, a second cylinder, and a third cylinder, which are respectively fixed through the surface of the top plate. The output end of the first cylinder is fixedly connected to the upper surface of the first stamping head, the output end of the second cylinder is fixedly connected to the upper surface of the second stamping head, and the output end of the third cylinder is fixedly connected to the upper surface of the third stamping head.

[0013] Using the above technical solution, cylinders No. 1, No. 2 and No. 3 can be used to drive different stamping heads to perform stamping.

[0014] Preferably, the inner surface of the split stamping structure is provided with a positioning structure. The positioning structure guides and positions the stamping punch during its movement through a positioning rod, preventing deviation during the stamping process.

[0015] By adopting the above technical solution, the positioning structure can be used to guide and position the stamping punch during its movement.

[0016] Preferably, the positioning structure includes a positioning block, which is an arc-shaped block structure. One end of the positioning block is provided with a semi-circular notch. The positioning block is fixedly installed on the inner surface of the first stamping head. Two positioning blocks are symmetrically arranged on the inner surface of the first stamping head. The two positioning blocks form a group. Three identical groups of positioning blocks are provided. The other two groups of positioning blocks are fixedly installed on the inner surfaces of the second and third stamping heads, respectively. Two adjacent positioning blocks are engaged with the outer surface of the same positioning rod. Three positioning rods are arranged in a ring. The upper ends of the three positioning rods are fixedly installed on the surface of the top plate.

[0017] By adopting the above technical solution, the positioning of the stamping punch movement can be achieved by utilizing the cooperation between the positioning block and the positioning rod.

[0018] Compared with the prior art, the beneficial effects of this utility model are: the mold structure that improves the flatness of stamped products:

[0019] 1. This device is equipped with a split stamping structure consisting of a No. 1 stamping head, a No. 2 stamping head, and a No. 3 stamping head, which stamps the sheet metal in stages. This achieves partial blanking during the stamping process, and the workpiece remains connected to the strip after partial blanking. This reduces the positional deviation of the workpiece during processing, thereby improving the processing accuracy and dimensional stability of the workpiece and ensuring the flatness of the product.

[0020] 2. This device uses a split stamping structure to stamp and form sheet metal in stages. Compared with the traditional one-time blanking, the semi-blank structure distributes the blanking force in different processes, which reduces the impact force on the die during a single blanking, which helps to extend the service life of the die. At the same time, it also reduces the vibration and noise of the die during the blanking process and improves the stability of the stamping process.

[0021] 3. This device is equipped with a positioning structure consisting of positioning blocks and positioning rods. The positioning blocks are set on the inner surface of each stamping head and engage with the ring-shaped positioning rods to ensure that the stamping head will not shift during the stamping process, thereby improving the positional accuracy of each stamping, improving product quality, and extending the service life of the mold. Attached Figure Description

[0022] Figure 1 This is a front view structural diagram of the present invention;

[0023] Figure 2 This is a schematic diagram of the cylinder mounting structure of this utility model;

[0024] Figure 3 This is a schematic diagram of the positioning rod installation structure of this utility model;

[0025] Figure 4 This is a schematic diagram of the split stamping structure of this utility model;

[0026] Figure 5 This is a schematic diagram of the positioning block installation structure of this utility model;

[0027] Figure 6 This is a schematic diagram of the operation of the split stamping structure of this utility model.

[0028] In the diagram: 1. Base; 2. Workbench; 3. Top plate; 4. First punch head; 5. Second punch head; 6. Third punch head; 7. First cylinder; 8. Second cylinder; 9. Third cylinder; 10. Positioning block; 11. Positioning rod. Detailed Implementation

[0029] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0030] Please see Figures 1-6 This utility model provides a technical solution: a mold structure for improving the flatness of stamped products, including a base 1, a worktable 2, a top plate 3, a first stamping head 4, a second stamping head 5, a third stamping head 6, a first cylinder 7, a second cylinder 8, a third cylinder 9, a positioning block 10, and a positioning rod 11.

[0031] A worktable 2 is fixedly installed on the upper surface of the base 1. A top plate 3 is fixedly installed above the base 1 via a bracket. A split stamping structure is provided between the worktable 2 and the top plate 3. The split stamping structure realizes the stamping of the sheet metal in stages through a first stamping head 4, a second stamping head 5, and a third stamping head 6. The split stamping structure includes a first stamping head 4, a second stamping head 5, and a third stamping head 6. The first stamping head 4 has an arc-shaped structure, and a stamping punch is provided on its lower surface. The second stamping head 5 and the third stamping head 6 are respectively provided at both ends of the first stamping head 4. The second stamping head 5 has an arc-shaped structure, and a stamping punch is provided on its lower surface. The third stamping head 6 has an arc-shaped structure, and the lower surface of the third stamping head 6 is shown in the table below. The top plate 3 is equipped with stamping punches. The first stamping head 4, the second stamping head 5, and the third stamping head 6 together form a ring-shaped split stamping structure. The upper surface of the split stamping structure is equipped with a driving structure. The driving structure uses the first cylinder 7, the second cylinder 8, and the third cylinder 9 to drive the different stamping punches in the split stamping structure in sequence. The driving structure includes the first cylinder 7, the second cylinder 8, and the third cylinder 9. The first cylinder 7, the second cylinder 8, and the third cylinder 9 are respectively fixed through the surface of the top plate 3. The output end of the first cylinder 7 is fixedly connected to the upper surface of the first stamping head 4, the output end of the second cylinder 8 is fixedly connected to the upper surface of the second stamping head 5, and the output end of the third cylinder 9 is fixedly connected to the upper surface of the third stamping head 6.

[0032] like Figure 1 , Figure 2 and Figure 4As shown, the sheet metal to be stamped is placed on the worktable 2. The equipment is started, and cylinders 7, 8, and 9 are started in sequence. Cylinder 7 pushes the stamping head 4 downward. The stamping punch on the lower surface of the arc-shaped stamping head 4 performs the first stamping on the sheet metal, at which point the sheet metal is first dropped. Cylinder 7 drives the stamping head 4 to rise, and cylinder 8 is started. The stamping head 5 moves downward to perform the second stamping on the sheet metal. Similarly, after the stamping head 5 completes its stamping, cylinder 9 drives the stamping head 6 to perform the third stamping on the sheet metal, completing the stamping process. By using the three stamping processes, the workpiece is partially dropped during the stamping process, reducing the positional deviation of the workpiece during processing and improving the quality of the workpiece.

[0033] The inner surface of the split stamping structure is provided with a positioning structure. The positioning structure guides and positions the stamping punch during its movement through the positioning rod 11, preventing deviation during the stamping process. The positioning structure includes a positioning block 10, which is an arc-shaped block structure. One end of the positioning block 10 is provided with a semi-circular notch. The positioning block 10 is fixedly installed on the inner surface of the first stamping head 4. Two positioning blocks 10 are symmetrically arranged on the inner surface of the first stamping head 4. Two positioning blocks 10 form a group. Three identical groups of positioning blocks 10 are provided. The other two groups of positioning blocks 10 are fixedly installed on the inner surfaces of the second stamping head 5 and the third stamping head 6, respectively. Two adjacent positioning blocks 10 are engaged with the outer surface of the same positioning rod 11. Three positioning rods 11 are arranged in a ring. The upper ends of the three positioning rods 11 are fixedly installed on the surface of the top plate 3.

[0034] like Figure 3 , Figure 4 , Figure 5 and Figure 6 As shown, when the No. 1 stamping head 4, the No. 2 stamping head 5, and the No. 3 stamping head 6 move downwards to stamp the workpiece, the movement of the No. 1 stamping head 4 will synchronously drive the positioning block 10 on the inner surface to move. The semi-circular notch at one end of the positioning block 10 slides on the surface of the positioning rod 11. The positioning rod 11 restricts the movement path of the positioning block 10, thereby preventing the movement of the No. 1 stamping head 4 from deviating. The movement process of the No. 2 stamping head 5 and the No. 3 stamping head 6 is the same, thereby increasing the product quality of the workpiece during the stamping process.

[0035] Working principle: When using this mold structure to improve the flatness of stamped products, cylinders 7, 8, and 9 sequentially drive the first stamping head 4, the second stamping head 5, and the third stamping head 6 downwards to stamp the sheet metal on the worktable 2 in stages. Staged stamping avoids uneven deformation caused by excessive local force during one-time stamping, thus effectively improving the flatness of the stamped products. During the movement of the first stamping head 4, the second stamping head 5, and the third stamping head 6, the positioning block 10 moves synchronously on the surface of the positioning rod 11, thereby guiding the movement of the first stamping head 4, the second stamping head 5, and the third stamping head 6 and avoiding product quality defects caused by the offset of the first stamping head 4, the second stamping head 5, and the third stamping head 6, thus increasing the overall practicality.

[0036] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A mold structure for improving the flatness of stamped products, comprising a base (1), a worktable (2) fixedly mounted on the upper surface of the base (1), and a top plate (3) fixedly mounted on the top of the base (1) via a bracket, characterized in that: A split stamping structure is provided between the worktable (2) and the top plate (3). The split stamping structure realizes the stamping of the sheet material in stages through the No. 1 stamping head (4), the No. 2 stamping head (5) and the No. 3 stamping head (6). The split stamping structure includes the No. 1 stamping head (4), the No. 2 stamping head (5) and the No. 3 stamping head (6).

2. The mold structure for improving the flatness of stamped products according to claim 1, characterized in that: The first stamping head (4) has an arc-shaped structure, and a stamping punch is provided on the lower surface of the first stamping head (4). The two ends of the first stamping head (4) are respectively provided with a second stamping head (5) and a third stamping head (6). The second stamping head (5) has an arc-shaped structure, and a stamping punch is provided on the lower surface of the second stamping head (5). The third stamping head (6) has an arc-shaped structure, and a stamping punch is provided on the lower surface of the third stamping head (6).

3. The mold structure for improving the flatness of stamped products according to claim 1, characterized in that: The No. 1 stamping head (4), No. 2 stamping head (5), and No. 3 stamping head (6) together form a ring-shaped split stamping structure.

4. The mold structure for improving the flatness of stamped products according to claim 1, characterized in that: The upper surface of the split stamping structure is provided with a driving structure. The driving structure drives the different stamping punches in the split stamping structure one by one through cylinder 1 (7), cylinder 2 (8) and cylinder 3 (9).

5. The die structure for improving the flatness of stamped products according to claim 4, characterized in that: The drive structure includes a first cylinder (7), a second cylinder (8), and a third cylinder (9). The first cylinder (7), the second cylinder (8), and the third cylinder (9) are respectively fixed through the surface of the top plate (3). The output end of the first cylinder (7) is fixedly connected to the upper surface of the first stamping head (4). The output end of the second cylinder (8) is fixedly connected to the upper surface of the second stamping head (5). The output end of the third cylinder (9) is fixedly connected to the upper surface of the third stamping head (6).

6. The mold structure for improving the flatness of stamped products according to claim 1, characterized in that: The inner surface of the split stamping structure is provided with a positioning structure. The positioning structure guides and positions the stamping punch during its movement through a positioning rod (11) to prevent deviation during the stamping process.

7. The die structure for improving the flatness of stamped products according to claim 6, characterized in that: The positioning structure includes a positioning block (10), which is an arc-shaped block structure. One end of the positioning block (10) is provided with a semi-circular notch. The positioning block (10) is fixedly installed on the inner surface of the first stamping head (4). Two positioning blocks (10) are symmetrically arranged on the inner surface of the first stamping head (4). The two positioning blocks (10) form a group. The positioning blocks (10) are arranged in three identical groups. The other two groups of positioning blocks (10) are fixedly installed on the inner surfaces of the second stamping head (5) and the third stamping head (6), respectively. Two adjacent positioning blocks (10) are engaged with the outer surface of the same positioning rod (11). Three positioning rods (11) are arranged in a ring. The upper ends of the three positioning rods (11) are fixedly installed on the surface of the top plate (3).

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