Conformable split mold rubber forming device
By optimizing the mold design and adopting a modular design for replicable square columns, the conformal half-mold rubber molding device solves the problems of mold adhesion and stability in rubber molding, achieving high-precision flexible molding and low-cost production.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- CHINA HELICOPTER RES & DEV INST
- Filing Date
- 2025-04-22
- Publication Date
- 2026-05-29
AI Technical Summary
Rubber forming has problems such as poor mold adhesion, large amount of manual shaping work, easy instability and wrinkling or cracking of sheet material when the deformation is large, large requirements for machine tool worktable area and press stroke, high unit pressure requirements, low degree of intelligentization, and lower productivity than traditional bending method.
The conformal semi-mold rubber forming device adopts a modular design with a reproducible square column. By optimizing the mold design, the rubber is evenly applied to the sheet metal parts, and steel balls are used to transmit forming pressure to achieve high-precision flexible forming.
It improves the bonding accuracy and stability of rubber molding, reduces sheet springback and wrinkling, lowers mold costs and molding cycle, and is suitable for trial production and single-piece/small-batch production.
Smart Images
Figure CN224296369U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of aerospace technology, and in particular relates to a conformal semi-molded rubber forming device. Background Technology
[0002] Compared with conventional stamping, rubber forming has the following advantages: 1) It can manufacture parts with more complex shapes; 2) It reduces or simplifies molds, and mold repair is simple, greatly reducing mold costs; 3) It reduces forming processes, shortens the preparation cycle, and enables rapid response, making it very suitable for trial production and small-batch production; 4) It will not scratch the workpiece; 5) It is a green production process: less pollution, lower energy consumption, and lower noise. However, rubber forming also has many shortcomings: 1) Poor mold adhesion, large amount of manual shaping work, and when the deformation is large, the sheet is prone to instability, wrinkling, or cracking due to excessive thinness; 2) Large requirements for machine tool worktable area and press stroke, and high unit pressure requirements; 3) Low level of intelligentization, and lower productivity than traditional bending methods; 4) Trial and error methods account for a large proportion.
[0003] In the process of researching ways to overcome the disadvantages of rubber molding, various advanced semi-molding processes have emerged, such as liquid-filled cold semi-molding, superplastic bulging, explosive forming, and hot semi-molding. While these processes improve some of the shortcomings of rubber molding, they also have their own inherent limitations, making large-scale application difficult at present. Rubber molding remains the most widely used semi-molding method. Therefore, starting from rubber molding itself, retaining its advantages while significantly improving its shortcomings is an important research topic that will undoubtedly play a significant role.
[0004] Whether it's traditional rubber pad forming or rubber bladder forming, problems such as sheet springback, wrinkling, and cracking have not been well resolved. These are the three major challenges that the plastic forming industry most urgently needs to address. Research has progressed through increasing the tonnage of hydraulic presses, improving the rubber medium, adding pressure measuring blocks, and using numerical simulations and experimental verification. According to current research, improving the design of machine tools and molds, and enhancing rubber properties are two fundamental ways to overcome the disadvantages of rubber forming. Utility Model Content
[0005] This utility model provides a conformal semi-mold rubber forming device, aiming to improve mold design by adopting a modular design with replicable square columns. This allows the bottom of the device to form a shape similar to the upper surface of the male mold, enabling the rubber to uniformly conform to the sheet metal part during subsequent rubber forming, achieving high-precision flexible forming. The technical solution is as follows:
[0006] In a first aspect, a conformal semi-mold rubber molding device is provided, comprising: a top post 1, an upper cover plate 2, a T-slot 3, a T-slider 4, a steel ball 5, an operating wall plate 6, a square post 10, a forming male mold 12, a fixed wall plate 13, and a steel ball hole 15.
[0007] The adjacent two operating wall panels 6 and the other adjacent two fixed wall panels 13 constitute the four side structures of the device, and the adjacent wall panels are fixedly connected; one of the operating wall panels 6 uses its operating device to press the square column 10 against the opposite fixed wall panel 13 to achieve the pressing of the square column 10 in one horizontal direction, and the other operating wall panel 6 uses its operating device to press the square column 10 against its opposite fixed wall panel 13 to achieve the pressing of the square column 10 in another horizontal direction; the operating devices on the two operating wall panels 6 work simultaneously to achieve the pressing and fixing of the square column 10 in the internal space of the device;
[0008] Multiple square columns 10 are vertically stacked in the internal space of the device and fill the horizontal direction of the internal space of the device. When the operating device on the operating wall panel 6 is not pressed tightly, there are small gaps in the horizontal direction between the square columns 10, and the square columns 10 can slide vertically between them.
[0009] The forming male mold 12 is located directly below the conformal half-mold rubber forming device, and the upper surface of the pre-formed forming male mold 12 needs to form the surface shape of the part.
[0010] The upper cover plate 2 is fixed above the conformal semi-molded rubber forming device to seal the upper end of the conformal semi-molded rubber forming device and to provide a forming pressure attachment point.
[0011] The top post 1 is located on the upper cover plate 2. The upper cover plate 2 has a T-shaped groove 3 in the middle and a steel ball hole 15 for inserting steel ball 5 in the center. The T-shaped slider 4 is fixed to the lower end of the top post 1 and can slide in the T-shaped groove 3.
[0012] The operating device on the operating wall panel 6 includes an H-shaped groove 7, a rocker arm 8, and an H-shaped pressure block 9. The H-shaped pressure block 9 is installed in the H-shaped groove 7, which both restricts the H-shaped pressure block 9 from detaching from the groove and provides it with a certain amount of sliding space in the horizontal direction. The rocker arm 8 is installed on the operating wall panel 6, and the rocker arm 8 and the H-shaped pressure block 9 are at the same horizontal height. When the rocker arm 8 is rocked counterclockwise, it moves towards the H-shaped pressure block 9, pressing the H-shaped pressure block 9 towards the opposite fixed wall panel 13, ultimately achieving the pressing and fixing of the square column cluster 10.
[0013] Optionally, a sheet metal part 11 is placed between the forming male mold 12 and the conformal half-mold rubber forming device.
[0014] Optionally, a rubber of uniform thickness is placed between the sheet metal part 11 and the cluster of square columns 10.
[0015] Optionally, the height of the rubber is twice the maximum groove height of the forming surface of the forming male mold 12.
[0016] Optionally, the top cover 2 and the fixed wall panel 13 are connected by a hinge 14.
[0017] The beneficial effects of this utility model are at least as follows:
[0018] (1) The modular design of the square column is adopted, which allows the bottom of the device to form a shape similar to the upper surface of the male mold. During the subsequent rubber forming, the rubber can be evenly attached to the sheet metal parts to achieve high-precision flexible forming.
[0019] (2) Steel balls with both hardness and fluidity are used to fill the cavity, so that while maintaining the shape of the square column at the bottom of the device, the larger forming pressure can be transmitted from top to bottom through the steel balls, resulting in strong stability and good forming effect.
[0020] (3) It has a simple structure, low manufacturing complexity, simple assembly method, clear and easy-to-understand usage logic, small size and light weight, and good economic efficiency. Attached Figure Description
[0021] Figure 1 This is a schematic diagram of the overall structure of this utility model;
[0022] Figure 2 This is a schematic diagram of the outer frame structure of the device of this utility model;
[0023] Figure 3 This is a schematic diagram of the square column structure of this utility model. Detailed Implementation
[0024] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.
[0025] The features and illustrative embodiments of various aspects of this utility model will now be described in detail. In the following detailed description, numerous specific details are set forth in order to provide a comprehensive understanding of this utility model. However, it will be apparent to those skilled in the art that this utility model can be practiced without requiring some of these specific details. The following description of embodiments is merely intended to provide a better understanding of this utility model by illustrating examples of it. This utility model is by no means limited to any specific arrangements and methods set forth below, but covers any improvements, substitutions, and modifications to the structure, method, and apparatus without departing from the spirit of this utility model. In the accompanying drawings and the following description, well-known structures and techniques are not shown to avoid unnecessarily obscuring this utility model.
[0026] It should be noted that, unless otherwise specified, the embodiments of this utility model and the features thereof can be combined with each other, and the various embodiments can be referenced and cited from each other.
[0027] The present invention will now be described in further detail with reference to specific embodiments and accompanying drawings.
[0028] Please see Figure 1 This utility model provides a conformal semi-mold rubber forming device, including a top column 1, an upper cover plate 2, a T-shaped groove 3, a T-shaped slider 4, steel balls 5, an operating wall plate 6, a square column 10, a sheet metal part 11, a forming male mold 12, a fixed wall plate 13, and a steel ball hole 15.
[0029] The adjacent two operating wall panels 6 and the other two adjacent fixed wall panels 13 constitute the four side structures of the device. The adjacent wall panels are connected in a fixed manner. The operating wall panel 6 uses its operating device to press the square column 10 against the opposite fixed wall panel 13, thereby pressing the square column 10 against the opposite fixed wall panel 13 in one horizontal direction. The other operating wall panel 6 uses its operating device to press the square column 10 against its opposite fixed wall panel 13, thereby pressing the square column 10 against the opposite fixed wall panel 13 in another horizontal direction. The operating devices on the two operating wall panels 6 work simultaneously to press and fix the square column 10 within the internal space of the device.
[0030] Multiple square columns 10 are vertically stacked in the internal space of the device, filling the horizontal direction of the internal space. When the operating device on the operating wall panel 6 is not pressed tightly, there are small gaps in the horizontal direction between the square columns 10, and the square columns 10 can slide vertically between each other.
[0031] The pre-formed forming male mold 12 has an upper surface that is the shape of the part to be formed. Before the square pillars 10 are pressed and fixed, the device needs to be placed on the forming male mold 12 so that the square pillars 10 can press freely on the upper surface of the forming male mold 12 by their own weight in the vertical direction. The bottom of the square pillar cluster 10 fits the upper surface of the forming male mold 12 to the maximum extent. After the square pillar cluster 10 is pressed and fixed, the bottom of the square pillar cluster 10 will form a shape similar to the upper surface of the forming male mold 12. The purpose is that during the subsequent rubber forming, the rubber can fit the sheet metal part evenly and achieve high-precision flexible forming.
[0032] The operating device on the operating wall panel 6 consists of an H-shaped groove 7, a rocker arm 8, and an H-shaped pressure block 9. The H-shaped pressure block is installed in the H-shaped groove 7. The H-shaped groove 7 not only restricts the H-shaped pressure block 9 from leaving the H-shaped groove 7, but also provides a certain sliding space for the H-shaped pressure block 9 in the horizontal direction. When the rocker arm 8 is rocked counterclockwise, the bolt of the rocker arm 8 presses the H-shaped pressure block 9 to move towards the opposite fixed wall panel 13, ultimately achieving the pressing and fixing of the square column 10 cluster.
[0033] The main function of the upper cover plate 2 is to seal the upper end of the device and provide a forming pressure attachment point. The upper cover plate 2 is fixed above the device. A T-shaped groove 3 is provided in the middle of the upper cover plate 2, and a steel ball hole 15 is provided in the center of the upper cover plate 2. The T-shaped slider 4 is fixed to the lower end of the top column 1, and the T-shaped slider 4 can slide in the T-shaped groove 3.
[0034] After the square column cluster 10 is clamped and fixed, a cavity exists between the square column cluster 10 and the upper cover plate 2. The top column 1 drives the T-shaped slider 4 to slide to the edge of the T-shaped groove 3, opening the steel ball hole 15. Steel balls 5 can then be poured into the cavity between the square column cluster 10 and the upper cover plate 2 through the steel ball hole 15. When the steel balls 5 fill the cavity between the square column cluster 10 and the upper cover plate 2, the top column 1 drives the T-shaped slider 4 to slide to the center of the T-shaped groove 3, and the T-shaped slider 4 covers the steel ball hole 15 to prevent the steel balls 5 from escaping. The main function of the steel balls 5 filling the cavity between the square column cluster 10 and the upper cover plate 2 is to transfer the forming pressure of the device through the top column 1 to the T-shaped slider 4, which in turn transfers it to the upper cover plate 2. The upper cover plate 2 then evenly distributes the pressure to each square column 10 through the steel balls 5.
[0035] The forming male mold 12 is placed directly below the device, and the forming surface of the forming male mold 12 is higher than the bottom of the device. A sheet metal part 11 is placed between the forming male mold 12 and the device. A rubber of uniform thickness is placed between the sheet metal part 11 and the cluster of square columns 10. The rubber is generally twice the maximum groove height of the forming surface of the forming male mold 12.
[0036] In one embodiment, the upper cover plate 2 and the fixed wall plate 13 are connected by a hinge 14.
[0037] The working principle of this utility model is as follows:
[0038] (1) Multiple square columns 10 are vertically stacked in the internal space of the device and fill the horizontal direction of the internal space of the device. When the operating device on the operating wall plate 6 is not pressed, there is a small gap in the horizontal direction between the square columns 10, and the square columns 10 can slide vertically between each other.
[0039] (2) Place the device on the forming male mold 12, so that the square column 10 can press freely on the upper surface of the forming male mold 12 in the vertical direction by its own weight, and the bottom of the square column 10 cluster fits the upper surface of the forming male mold 12 to the maximum extent.
[0040] (3) The operating device on the operating wall panel 6 consists of an H-shaped groove 7, a rocker arm 8, and an H-shaped pressure block 9. The H-shaped pressure block is installed in the H-shaped groove 7. The H-shaped groove 7 not only restricts the H-shaped pressure block 9 from leaving the H-shaped groove 7, but also provides a certain sliding space for the H-shaped pressure block 9 in the horizontal direction. When the rocker arm 8 is rocked counterclockwise, the bolt of the rocker arm 8 presses the H-shaped pressure block 9 to move towards the opposite fixed wall panel 13, and finally achieves the pressing and fixing of the square column 10 cluster.
[0041] (4) After the square column 10 cluster is clamped and fixed, there is a cavity between the square column 10 cluster and the upper cover plate 2. The top column 1 drives the T-shaped slider 4 to slide to the edge of the T-shaped groove 3, opening the steel ball hole 15. The steel ball 5 can be poured into the cavity between the square column 10 cluster and the upper cover plate 2 from the steel ball hole 15. When the steel ball 5 fills the cavity between the square column 10 cluster and the upper cover plate 2, the top column 1 drives the T-shaped slider 4 to slide to the center of the T-shaped groove 3. The T-shaped slider 4 covers the steel ball hole 15 to prevent the steel ball 5 from escaping.
[0042] (5) The forming male mold 12 is placed directly below the device. The forming surface of the forming male mold 12 is higher than the bottom of the device. Sheet metal parts 11 are placed between the forming male mold 12 and the device. Rubber of uniform thickness is placed between the sheet metal parts 11 and the square column 10 cluster.
[0043] (6) Apply pressure to the top column 1 to perform rubber forming. The forming pressure can be transmitted from the top column 1 to the T-shaped slider 4, the T-shaped slider 4 to the upper cover plate 2, the upper cover plate 2 then evenly transmits the pressure to each square column 10 through the steel ball 5, and finally to the sheet metal part 11 through the rubber. The rubber can evenly adhere to the sheet metal part to achieve high-precision flexible forming.
[0044] The key features of this utility model are as follows:
[0045] (1) As Figure 1 and Figure 2As shown, the operating wall panel 6 uses its operating device to press the square column 10 against the opposite fixed wall panel 13, thus pressing the square column 10 in one horizontal direction. The other operating wall panel 6 uses its operating device to press the square column 10 against the opposite fixed wall panel 13, thus pressing the square column 10 in another horizontal direction.
[0046] (2) Multiple square columns 10 are vertically stacked inside the device, filling the horizontal space of the device's interior. The square column structure is as follows: Figure 3 As shown.
[0047] (3) Before the square column 10 is pressed and fixed, the device needs to be placed on the forming male mold 12 so that the square column 10 can press freely on the upper surface of the forming male mold 12 by its own weight in the vertical direction. The bottom of the square column 10 cluster will fit with the upper surface of the forming male mold 12 to the maximum extent. After the square column 10 cluster is pressed and fixed, the bottom of the square column 10 cluster will form a shape similar to the upper surface of the forming male mold 12.
[0048] (4) The main function of the steel ball 5 filling the cavity between the square column 10 cluster and the upper cover plate 2 is to transfer the pressure of the device forming through the top column 1 to the T-shaped slider 4, the T-shaped slider 4 to the upper cover plate 2, and the upper cover plate 2 to each square column 10 evenly through the steel ball 5.
[0049] (5) A rubber of uniform thickness is placed between the sheet metal part 11 and the square column 10 cluster. The rubber is generally twice the maximum groove height of the forming surface of the forming male mold 12.
[0050] The above description merely illustrates the embodiments of this utility model, and while the description is relatively specific and detailed, it should not be construed as limiting the scope of the patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Furthermore, any parts of this utility model not described in detail are conventional techniques.
Claims
1. A conformal semi-molded rubber forming device, characterized in that, include: Top column, top cover plate, T-slot, T-slider, steel ball, operating wall panel, square column, forming male mold, fixed wall panel, steel ball hole. The adjacent two operating wall panels and the other two adjacent fixed wall panels constitute the four side structures of the device, and the adjacent wall panels are fixedly connected; one of the operating wall panels uses its operating device to press the square column against the opposite fixed wall panel to achieve the pressing of the square column in one horizontal direction, and the other operating wall panel uses its operating device to press the square column against the opposite fixed wall panel to achieve the pressing of the square column in another horizontal direction. Multiple square columns are stacked vertically inside the device, filling the horizontal space of the device's interior. The forming male mold is located directly below the conformal half-mold rubber forming device, and the upper surface of the pre-formed forming male mold needs to form the surface shape of the part. The top cover plate is fixed above the conformal half-mold rubber forming device; the top post is located on the top cover plate, a T-shaped groove is provided in the middle of the top cover plate, a steel ball hole for inserting steel balls is provided in the center of the top cover plate, and a T-shaped slider is fixed at the lower end of the top post, and the T-shaped slider can slide in the T-shaped groove.
2. The apparatus according to claim 1, characterized in that, The operating device on the operating panel includes: an H-shaped groove, a rocker arm, and an H-shaped pressure block; the H-shaped pressure block is installed in the H-shaped groove; the rocker arm is installed on the operating panel, and the rocker arm and the H-shaped pressure block are at the same horizontal height.
3. The apparatus according to claim 1, characterized in that, A sheet metal part is placed between the forming male mold and the conformal half mold rubber forming device.
4. The apparatus according to claim 3, characterized in that, A piece of rubber of uniform thickness is placed between the sheet metal parts and the cluster of square columns.
5. The apparatus according to claim 4, characterized in that, The height of the rubber is twice the maximum groove height on the forming surface of the forming male mold.
6. The apparatus according to claim 1, characterized in that, The top cover and the fixed wall panel are connected by hinges.