An upper die stripping structure with high stability

Abstract

The application discloses a high-stability upper die stripping structure, which comprises a beating plate, a pressing plate, a punch clamp plate and a stripping plate arranged in sequence from top to bottom. The pressing plate is provided with a plurality of guide assemblies, including a guide sleeve, a jack and a screw. The middle part of the jack is provided with a threaded section, the screw penetrates through the beating plate and is threadedly connected with the beating plate, is screwed into the threaded section of the jack, and further penetrates through the punch clamp plate and the stripping plate and is threadedly connected with the stripping plate. The structure is combined with the screw through the guide assemblies, so that the beating plate and the stripping plate are combined as a whole and move together, accurate guidance is provided, the inclination and swing of the stripping plate in the high-speed stamping process are effectively inhibited, the stripping balance is improved, and quality problems such as product hole drawing and deformation are avoided.

Description

Technical Field

[0001] This application relates to the technical field of punching dies, and more specifically, to a high-stability upper die stripping structure. Background Technology

[0002] In the stamping production of Mini aluminum substrates, punching dies are typically used. Due to the large surface area of ​​the aluminum substrate, the dimensions of each template in the die also increase accordingly. In traditional die structures, the punching plate and stripper plate are usually directly connected and fixed by screws, lacking an effective guiding and limiting mechanism. During the stamping process, especially under high-speed continuous operation conditions, the punching plate and stripper plate are prone to tilting and swaying due to their large surface area and insufficient support, causing unbalanced stripping and leading to defects such as hole pulling and product deformation, seriously affecting product quality and production efficiency. Utility Model Content

[0003] To address the problem that in the stamping and cutting process of Mini aluminum substrates, the punching plate and stripping plate are usually directly connected and fixed with screws, which is prone to tilting and swaying, causing unbalanced stripping and leading to defects such as hole pulling and product deformation, this application provides a highly stable upper die stripping structure.

[0004] A highly stable upper die stripping structure includes a punch plate, a pressure plate, a punch clamping plate, and a stripping plate arranged sequentially from top to bottom. The pressure plate is provided with several guide components. Each guide component includes a guide sleeve fixed to the pressure plate, a push rod movably disposed in the inner hole of the guide sleeve, and a screw. The push rod has a threaded section in the middle. The screw passes through the punch plate and is threadedly connected to the punch plate. The screw is screwed into the threaded section of the push rod and passes through the punch clamping plate and is threadedly connected to the stripping plate.

[0005] Preferably, the clearance between the guide sleeve and the push rod is controlled within 0.02 mm.

[0006] Preferably, the guide sleeve and the push rod are made of metal and are heat-treated to enhance their rigidity and wear resistance.

[0007] Preferably, the top of the pressure plate and the punch clamp are provided with multiple grooves, and a cylindrical urethane adhesive is fixed in the groove, with the upper end of the urethane adhesive abutting against the punch plate.

[0008] Preferably, the urethane adhesive is a plurality of evenly arranged pieces, and the number of grooves corresponds to the number of urethane adhesive pieces.

[0009] Preferably, a plurality of the guide components are evenly arranged on the pressure plate.

[0010] The beneficial technical effects of this application are as follows:

[0011] 1. By setting a guide assembly including guide sleeves and push rods on the pressure plate and cooperating with screws that penetrate multiple layers of templates, the punching plate and stripping plate are connected into a single moving structure. This provides precise guidance for the integrated movement of the punching plate and stripping plate, effectively constraining the tilting and swaying of large-sized punching plates and stripping plates during high-speed stamping, ensuring the smooth up-and-down movement of the stripping plate, and solving quality problems such as product hole pulling and deformation caused by unbalanced stripping.

[0012] 2. The guide sleeve and ejector pin are made of metal and undergo heat treatment, resulting in high rigidity and high wear resistance. The extremely small (≤0.02mm) clearance between them forms a high-precision sliding pair, which allows the entire stripping structure to maintain extremely high motion coaxiality and structural stability even when subjected to uneven punching pressure, thus extending the service life of the mold.

[0013] 3. Multiple evenly distributed cylindrical urethane rubber strips provide elasticity to the integrated moving structure of the ejector plate and stripper plate, ensuring uniform force on the stripper plate during stripping. Combined with equally evenly distributed guide components, this eliminates localized stress concentration, making the stripping process smoother and gentler, further protecting the surface and hole quality of the product. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of a planar structure of an upper mold ejection structure with high stability according to this embodiment.

[0015] Attached reference numerals: 1. Punch plate; 2. Pressure plate; 21. Groove; 3. Punch clamp; 4. Stripper plate; 5. Guide assembly; 51. Guide sleeve; 52. Push rod; 53. Screw; 6. Polyurethane adhesive. Detailed Implementation

[0016] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0017] Reference Figure 1A highly stable upper die stripping structure includes a punch plate 1, a pressure plate 2, a punch clamping plate 3, and a stripping plate 4 arranged from top to bottom. The pressure plate 2 is fixedly connected to the punch clamping plate 3. Multiple evenly distributed guide components 5 are mounted on the pressure plate 2. Each guide component 5 includes a guide sleeve 51 fixed in the pressure plate 2, a push rod 52 precisely fitted into the inner hole of the guide sleeve 51, and a screw 53. The push rod 52 has a threaded section in its middle. The screw 53 passes through the punch plate 1 from above and connects to it via a thread. Simultaneously, the screw 53 is screwed downwards into the threaded section of the push rod 52 and continues downwards through the punch clamping plate 3, finally achieving a threaded connection with the stripping plate 4. This connection method integrates the punch plate 1, push rod 52, and stripping plate 4 into a single moving unit via the screw 53. The guide sleeve 51, as a guide element fixed in the pressure plate 2, provides precise vertical guidance for the push rod 52.

[0018] Reference Figure 1 Both the guide sleeve 51 and the push rod 52 are made of metal and heat-treated, possessing high rigidity and wear resistance. The clearance between them is strictly controlled to be no more than 0.02 mm, forming a high-precision sliding pair to ensure coaxiality and stability of movement even under high speed or uneven force conditions. Furthermore, multiple grooves 21 are machined together at the top of the pressure plate 2 and the punch clamping plate 3. Each groove 21 is fixedly installed with cylindrical urethane rubber 6. These urethane rubber 6 maintain contact with the punch plate 1 at their upper ends and are evenly distributed across the entire template, collectively providing a balanced elastic restoring force. In this structure, urethane rubber is a high-performance polyurethane elastomer, commonly referred to as urethane rubber, polyurethane rubber, or PU rubber. This material is widely used in elastic elements of precision molds due to its excellent wear resistance, high elasticity, tear resistance, oil resistance, and resistance to compression set. Preferably, the Shore A hardness of the urethane in this application is 80°-90° to ensure that it can provide a sufficiently large and stable elastic force, while also having good fatigue resistance and being able to withstand the frequent compression and rebound caused by high-speed continuous stamping.

[0019] During operation, when the upper die completes the stamping and begins to rise, the ejector plate 1 moves upward under the elastic force of the urethane rubber 6. Through the screw 53, it drives the ejector rod 52 to slide upward within the guide sleeve 51, simultaneously causing the stripper plate 4 to move upward smoothly, thus achieving stripping. Due to the precise guidance of the guide assembly 5 and the uniform elastic force of the urethane rubber 6, the stripper plate 4 maintains a horizontal movement without tilting or swaying, effectively preventing product hole pulling or deformation, and improving stripping stability and product quality. This structure is particularly suitable for high-speed stamping production of large-format Mini aluminum substrates.

[0020] Although embodiments of this application have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of this application, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A highly stable upper die stripping structure, comprising, from top to bottom, a punching plate, a pressure plate, a punch clamping plate, and a stripping plate, characterized in that: The pressure plate is provided with several guide components. The guide components include a guide sleeve fixed to the pressure plate, a push rod movably disposed in the inner hole of the guide sleeve, and a screw. The push rod has a threaded section in the middle. The screw passes through the punch plate and is threadedly connected to the punch plate. The screw is screwed into the threaded section of the push rod and passes through the punch clamp and is threadedly connected to the stripper plate.

2. The upper mold stripping structure with high stability according to claim 1, characterized in that: The clearance between the guide sleeve and the push rod is controlled within 0.02mm.

3. The upper mold stripping structure with high stability according to claim 1, characterized in that: The guide sleeve and the push rod are made of metal and are heat-treated to enhance their rigidity and wear resistance.

4. The upper mold stripping structure with high stability according to claim 1, characterized in that: The pressure plate and the punch clamp are provided with multiple grooves at their top ends. A cylindrical urethane rubber is fixed in the grooves, and the upper end of the urethane rubber abuts against the punch plate.

5. The upper mold stripping structure with high stability according to claim 4, characterized in that: The urethane adhesive is a plurality of evenly arranged pieces, and the number of grooves corresponds to the number of urethane adhesive pieces.

6. The upper mold stripping structure with high stability according to claim 1, characterized in that: Several of the guide components are evenly arranged on the pressure plate.

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