A stable punch press die

Abstract

The utility model discloses a stable stamping die, including lower die holder, the upper portion of lower die holder is equipped with upper die holder, the inner chamber of upper die holder is equipped with punch assembly, the top of upper die holder with the bottom of lower die holder all is equipped with die carrier component, the inner chamber of lower die holder is equipped with lower die core, the upper end surface of lower die core is equipped with the compression assembly, the upper portion of compression assembly is equipped with upper die core, the compression assembly includes the lower compression platform of being opened in the lower die core upper end surface, and the upper compression platform of being opened in the upper die core bottom and with lower compression platform is matched. The upper die and lower die of stamping die usually adopt the mode of large area contact to compress, when the contact area is too large, the pressure is difficult to be evenly distributed on the whole contact surface, and the local area pressure is insufficient, and the workpiece is not pressed flat and is not pressed tight phenomenon, the problem of influencing product quality.

Description

Technical Field

[0001] This utility model relates to the field of stamping die technology, and more specifically, to a stable stamping die. Background Technology

[0002] Stamping dies are special tools used in stamping processes to apply pressure to metal or non-metal sheets, causing them to undergo plastic deformation or separation, thereby obtaining workpieces with specific shapes, sizes, and properties.

[0003] In existing technologies, the upper and lower dies of stamping dies typically use a large-area contact method for pressing. This design is prone to the following problems in practical use: when the contact area is too large, the pressure is difficult to distribute evenly across the entire contact surface, which can easily cause insufficient pressure in local areas, resulting in uneven or loose workpiece pressing and affecting product quality.

[0004] To address the aforementioned problems, this application proposes a stable stamping die. Utility Model Content

[0005] To address the problems in related technologies, this utility model provides a stable stamping die that can reduce the contact area by optimizing the structure of the pressing components, so that the pressure can be evenly distributed across the entire contact surface, avoiding uneven pressing and insufficient pressing, thereby improving product quality.

[0006] Therefore, the specific technical solution adopted by this utility model is as follows: A stable stamping die includes a lower die base, an upper die base correspondingly disposed above the lower die base, a punch assembly disposed in the inner cavity of the upper die base, a die frame assembly disposed at the top of the upper die base and the bottom of the lower die base, a lower die core disposed in the inner cavity of the lower die base, a pressing assembly disposed on the upper end face of the lower die core, an upper die core disposed above the pressing assembly, and a cavity through hole opened in the middle of both the upper die core and the lower die core, through which an ejector rod passes. The pressing assembly includes a lower pressing platform formed on the upper end face of the lower mold core, and an upper pressing platform formed on the bottom of the upper mold core and cooperating with the lower pressing platform.

[0007] As a further embodiment of this utility model, the punch assembly includes an inner punch body and an outer punch body sleeved outside the inner punch body. The outer punch body is installed in the inner cavity of the upper die holder. The split punch structure optimizes stress distribution, avoids concentration, and thus improves the service life of the punch.

[0008] As a further embodiment of this utility model, the combined shape of the inner punch body and the outer punch body is adapted to the cavity formed by the upper mold core and the lower mold core, ensuring that the metal blank can be uniformly filled into the cavity.

[0009] As a further embodiment of this utility model, the mold frame assembly includes an upper mold plate, which is bolted to the top of the upper mold base. The upper mold plate has guide sleeves at its four corners, which slide in cooperation with guide posts at the four corners of the upper end face of the lower mold plate to provide good guidance and ensure smooth mold closing and accurate alignment. The lower mold plate is bolted to the bottom of the lower mold base, and the lower mold plate is also provided with an anti-sticking device.

[0010] As a further embodiment of this utility model, the anti-sticking device includes an anti-sticking plate, and spring guide posts are provided at the bottom of both ends of the anti-sticking plate. The spring guide posts are symmetrically arranged on the upper end face of the lower template, and a bypass through hole for avoiding the punch assembly is provided in the middle of the anti-sticking plate.

[0011] As a further embodiment of this utility model, the lower template has a clearance through hole in the middle for the ejector rod to pass through, which facilitates the operation of the ejector rod.

[0012] The beneficial effects of this utility model are as follows: This invention, by setting up upper and lower clamping platforms with significantly reduced areas, precisely guides and concentrates the mold-closing pressure in a localized area. This allows the upper and lower mold cores to close accurately under uniform preload, fundamentally solving the problem of uneven pressure distribution caused by large-area contact, avoiding uneven or insufficient clamping, and thus improving product quality. Furthermore, this design optimizes the force path of the mold, effectively dispersing localized stress, thereby increasing the overall service life of the mold core. Simultaneously, the anti-stick device automates demolding, and combined with a stable and reliable guiding system, reduces production interruptions and manual intervention, improving production continuity. Attached Figure Description

[0013] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0014] Figure 1 This is an exploded view of the overall structure of a stable stamping die according to an embodiment of the present utility model; Figure 2 This is a schematic diagram of the pressing assembly structure of a stable stamping die according to an embodiment of the present utility model; Figure 3 This is a schematic cross-sectional view of the lower die holder and upper die holder of a stable stamping die according to an embodiment of the present utility model; Figure 4 This is an enlarged schematic diagram of the structure at point A of a stable stamping die according to an embodiment of the present utility model; Figure 5 This is a schematic diagram of the punch assembly structure of a stable stamping die according to an embodiment of the present utility model; Figure 6 This is a three-dimensional schematic diagram of the overall structure of a stable stamping die according to an embodiment of the present utility model.

[0015] In the picture: 1. Lower mold base; 2. Upper mold base; 3. Punch assembly; 31. Inner punch body; 32. Outer punch body; 4. Mold frame assembly; 41. Upper template; 42. Guide sleeve; 43. Lower template; 44. Guide post; 45. Anti-stick device; 451. Anti-stick plate; 452. Spring guide post; 453. Avoidance through hole; 5. Lower mold core; 6. Pressing assembly; 7. Upper mold core; 8. Cavity through hole; 9. Ejector rod; 10. Lower pressing platform; 11. Upper pressing platform; 12. Avoidance through hole. Detailed Implementation

[0016] To further illustrate the various embodiments, the present invention provides accompanying drawings, which are part of the disclosure of the present invention. These drawings are mainly used to illustrate the embodiments and can be used in conjunction with the relevant descriptions in the specification to explain the operating principles of the embodiments. With reference to these contents, those skilled in the art should be able to understand other possible implementation methods and the advantages of the present invention. The components in the figures are not drawn to scale, and similar component symbols are usually used to represent similar components.

[0017] According to an embodiment of the present invention, a stable stamping die is provided.

[0018] Please refer to the instruction manual appendix. Figure 1-6 According to an embodiment of the present invention, a stable stamping die includes a lower die base 1, an upper die base 2 correspondingly disposed above the lower die base 1, a punch assembly 3 disposed in the inner cavity of the upper die base 2, a die frame assembly 4 disposed at the top of the upper die base 2 and the bottom of the lower die base 1, a lower die core 5 disposed in the inner cavity of the lower die base 1, a pressing assembly 6 disposed on the upper end face of the lower die core 5, an upper die core 7 disposed above the pressing assembly 6, and a cavity through hole 8 opened in the middle of both the upper die core 7 and the lower die core 5, through which an ejector rod 9 passes; the pressing assembly 6 includes a lower pressing platform 10 opened on the upper end face of the lower die core 5, and an upper pressing platform 11 opened at the bottom of the upper die core 7 and cooperating with the lower pressing platform 10.

[0019] In the above technical solution, by setting up upper clamping platforms 11 and lower clamping platforms 10 with significantly reduced areas, the clamping pressure is precisely guided and concentrated in a local area. This allows the upper mold core 7 and lower mold core 5 to close precisely under the action of uniform preload, fundamentally solving the problem of uneven pressure distribution caused by large-area contact, avoiding uneven or insufficient clamping, and thus improving product quality. Moreover, this design optimizes the force path of the mold, effectively dispersing local stress, thereby increasing the overall service life of the mold core.

[0020] Among them, the cavity through hole 8 in the middle of the upper mold core 7 and the lower mold core 5 is used in conjunction with the ejector rod 9 to facilitate the ejection of the molded product.

[0021] In one embodiment, please refer to the appendix to the specification. Figure 1 , Figure 3 and Figure 5 The punch assembly 3 includes an inner punch body 31 and an outer punch body 32 sleeved outside the inner punch body 31. The outer punch body 32 is installed in the inner cavity of the upper die base 2. The combined shape of the inner punch body 31 and the outer punch body 32 is adapted to the cavity formed by the upper die core 7 and the lower die core 5. In use, the combination of the inner punch body 31 and the outer punch body 32 moves downward until it extends into the cavity formed by the upper die core 7 and the lower die core 5 to perform a stamping operation on the blank.

[0022] In one embodiment, please refer to the appendix to the specification. Figure 1 and Figure 6 As a further embodiment of this utility model, the mold frame assembly 4 includes an upper mold plate 41, which is bolted to the top of the upper mold base 2. The upper mold plate 41 has guide sleeves 42 at its four corners, which are slidably engaged with guide posts 44 at the four corners of the upper end face of the lower mold plate 43. The lower mold plate 43 is bolted to the bottom of the lower mold base 1. The lower mold plate 43 is also provided with an anti-sticking device 45, which includes an anti-sticking plate 451. Spring guide posts 452 are provided at the bottom of both ends of the anti-sticking plate 451. The spring guide posts 452 are symmetrically arranged on the upper end face of the lower mold plate 43. The anti-sticking plate 451 has a through hole 453 in the middle for avoiding the punch assembly 3. The lower mold plate 43 has a through hole 12 in the middle for the ejector rod 9 to pass through. The guide sleeve 42 and guide post 44 work together to provide good guidance during mold closing operations. At the same time, the upper mold plate 41 and lower mold plate 43 facilitate the connection between the mold and the equipment. The anti-stick plate 451 can prevent the product from sticking to the punch assembly 3.

[0023] Workflow: First, the blank is placed into the cavity formed by the upper die core 7 and the lower die core 5. Then, the press drives the upper die base 2 downward through the upper template 41, which in turn drives the punch assembly 3 downward until it extends into the cavity formed by the upper die core 7 and the lower die core 5 to perform the stamping operation on the blank. During this process, the guide sleeve 42 and the guide post 44 work together to guide the blank. After the stamping is completed, the press drives the upper die base 2 and the punch assembly 3 upward through the upper template 41. Then, the ejector rod 9 moves upward under the drive of the external drive mechanism of the machine to eject the product. During this process, the anti-stick plate 451 can push away any workpieces that may stick to the punch, thus achieving automatic anti-sticking.

[0024] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A stable stamping die, comprising a lower die holder (1), characterized in that: The upper mold base (2) is provided above the lower mold base (1). The upper mold base (2) has a punch assembly (3) in its inner cavity. The upper mold base (2) and the lower mold base (1) are both provided with mold frame assemblies (4). The lower mold base (1) has a lower mold core (5) in its inner cavity. The upper end face of the lower mold core (5) is provided with a pressing assembly (6). The upper mold core (7) is provided above the pressing assembly (6). The middle part of the upper mold core (7) and the lower mold core (5) are both provided with cavity through holes (8). An ejector rod (9) passes through the cavity through hole (8). The pressing assembly (6) includes a lower pressing platform (10) opened on the upper end face of the lower mold core (5), and an upper pressing platform (11) opened on the bottom of the upper mold core (7) and cooperating with the lower pressing platform (10).

2. The stable stamping die according to claim 1, characterized in that: The punch assembly (3) includes an inner punch body (31) and an outer punch body (32) sleeved outside the inner punch body (31), the outer punch body (32) being installed in the inner cavity of the upper die holder (2).

3. A stable stamping die according to claim 2, characterized in that: The combined shape of the inner punch body (31) and the outer punch body (32) is adapted to the cavity formed by the upper mold core (7) and the lower mold core (5).

4. A stable stamping die according to claim 1, characterized in that: The mold frame assembly (4) includes an upper template (41), which is bolted to the top of the upper mold base (2). The upper template (41) has guide sleeves (42) at its four corners, and the guide sleeves (42) are slidably engaged with the guide posts (44) at the four corners of the upper end face of the lower template (43). The lower template (43) is bolted to the bottom of the lower mold base (1), and the lower template (43) is also provided with an anti-sticking device (45).

5. A stable stamping die according to claim 4, characterized in that: The anti-sticking device (45) includes an anti-sticking plate (451), and spring guide posts (452) are provided at the bottom of both ends of the anti-sticking plate (451). The spring guide posts (452) are symmetrically arranged on the upper surface of the lower template (43). A bypass through hole (453) for avoiding the punch assembly (3) is opened in the middle of the anti-sticking plate (451).

6. A stable stamping die according to claim 5, characterized in that: The lower template (43) has a clearance through hole (12) in the middle for the ejector rod (9) to pass through.

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