Composite fiber material forming die structure
By designing a separable and combinable convex and concave module structure, combined with interlocking surfaces and staggered pull rings, the complexity of traditional mold structures is solved, simplifying mold processing and improving stability.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- CHONGQING PBAG ELECTRONIC TECH CO LTD
- Filing Date
- 2025-04-24
- Publication Date
- 2026-04-28
AI Technical Summary
Traditional automotive power battery cover molding molds have complex structures, resulting in high manufacturing costs and difficult processes.
The design employs separable and combinable convex and concave modules, combined with interlocking surfaces and staggered pull rings, to simplify the mold structure and improve stress balance.
It reduces the complexity and cost of mold processing, while improving the stability and service life of the mold.
Smart Images

Figure CN224170534U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to a composite fiber material molding die structure. Background Technology
[0002] Analysis of Material Selection for Automotive Power Battery Cover Molding Dies. Currently, the industry typically uses high-quality mold steels such as P20 and 718H as the base material. These materials possess high mechanical strength, excellent impact toughness, and stable processing characteristics, meeting the processing requirements of high-precision molds. However, traditional mold designs suffer from structural complexity, leading to a significant increase in manufacturing costs and process difficulty. To address these technical shortcomings, we propose a novel mold structure design to simplify the construction and improve manufacturing efficiency. Utility Model Content
[0003] To address the aforementioned problems in the prior art, this invention provides a composite fiber material molding die structure, which can improve upon the above deficiencies.
[0004] This utility model relates to a composite fiber material molding die structure, including a separable and combinable convex module and concave module. The convex module includes a base plate, support columns, a pressure plate, and insert columns. The pressure plate is provided on the base plate, and multiple support blocks are provided around the pressure plate and the base plate. An interval area is provided between the support blocks on both sides of the convex module along its length. A push plate is provided in the interval area, and a cylinder is provided on the push plate. Insert columns are provided at the four corners of the pressure plate. A convex forming part is provided in the middle of the surface of the pressure plate. The concave module includes a top plate and a support plate. The support plate is provided on the base plate and matches the pressure plate. Insert holes are provided at the four corners of the support plate. A die forming part matching the convex forming part is provided on the surface of the support plate. The contact surface between the convex forming part and the concave block is a convex-concave interlocking surface.
[0005] Furthermore, a support column is provided between the base plate and the pressure plate.
[0006] Furthermore, there are four interval zones.
[0007] Furthermore, a first pull ring is provided on each side of the punch forming part, the first pull ring is close to the push cylinder, and the distance between the two first pull rings is greater than the width of the punch forming part.
[0008] Furthermore, a second pull ring is provided on each side of the recessed module.
[0009] This novel design features ingenious improvements, a simple structure, and ease of manufacturing. Structurally, the contact surfaces of the convex and concave modules employ a convex-concave interlocking surface design. This simplifies the mold structure, reduces processing complexity, and thus saves materials and processing costs. The staggered design of the first and second pull rings ensures greater mold balance under stress, reducing deformation or damage caused by uneven force distribution. Attached Figure Description
[0010] Figure 1 This is a schematic diagram of the structure of this utility model.
[0011] Figure 2 This is a schematic diagram of a convex module structure.
[0012] Figure 3 This is a schematic diagram of the concave module structure.
[0013] Diagram: 1. Convex module, 2. Concave module, 3. Base plate, 4. Support column, 5. Pressure plate, 6. Insert column, 7. First pull ring, 7. Second pull ring, 8. Push cylinder, 9. Convex forming part, 10. Bearing plate, 11. Insertion hole, 12. Concave forming part. Detailed Implementation
[0014] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the scope of the present utility model.
[0015] like Figure 1-3 As shown, this utility model relates to a composite fiber material molding die structure, mainly composed of a separable and combinable convex module 1 and concave module 2. The convex module 1 includes a base plate 3, support columns 4, a pressure plate 5, and insert columns 6. A pressure plate is positioned above the base plate, and several support blocks are arranged between the pressure plate and the periphery of the base plate. Spacing areas 41 are respectively provided between the support blocks on both sides of the convex module's length direction, and each spacing area is equipped with a push plate 81, with a cylinder 8 mounted above the push plate. Insert columns 6 are vertically arranged at each of the four corners of the pressure plate, and a convex forming part 9 is fixed in the central area of the pressure plate. The concave module 2 includes a top plate 11 and a support plate 10. The support plate is positioned above the base plate 3 and forms a mating relationship with the pressure plate 5. Insert holes 101 corresponding to the insert columns are provided at its four corners. A concave forming part 12 adapted to the convex forming part is machined on the surface of the support plate. The contact surfaces of the convex forming part and the concave forming part 12 adopt a mutually meshing convex-concave interlocking structure.
[0016] Furthermore, a support column 4 is provided between the base plate and the pressure plate.
[0017] In a preferred embodiment, the number of the intervals 41 is set to four.
[0018] Further optimized, a pair of first pull rings 7 are symmetrically installed on both sides of the punch forming part. Specifically, the left first pull ring is located at the left end of the punch forming part along its length direction, near the left cylinder, while the right first pull ring is located at the corresponding position at the right end of the punch forming part along its length direction, near the right cylinder.
[0019] It should be noted that the center distance between the two first pull rings 7 should be greater than the overall width of the punch forming part.
[0020] Both the first and second pull rings are made of high-strength alloy steel, such as Q235 carbon steel. This material has good strength and toughness, capable of withstanding the large tensile and compressive forces experienced by the mold during use. It also possesses certain corrosion resistance, extending the service life of the pull rings and ensuring the stability and reliability of the mold during long-term use. Inner diameter of the first and second pull rings: Considering the ease of grip for operators, an inner diameter of 30-40 mm is suitable. Outer diameter: The outer diameter is typically 10-15 mm larger than the inner diameter, so it can be set at 40-55 mm. Thickness: To ensure sufficient strength to withstand tensile forces, the thickness is approximately 8-12 mm. Center distance between the two first pull rings: Assuming the width of the small mold's punch module is 150-250 mm, the center distance between the two first pull rings is designed to be greater than the punch module width, for example, 280-350 mm.
[0021] Further improvements include a pair of second pull rings 72 symmetrically mounted on both sides of the concave module, with the first pull ring 7 and the second pull ring 72 arranged in an alternating pattern on the horizontal projection plane. This alternating installation of the pull rings allows for greater balance of the mold under stress, as the pull rings distributed on both sides of the mold help to evenly distribute the force applied to it, reducing deformation or damage caused by uneven stress. The alternating pull ring design may also facilitate mold installation and disassembly, allowing operators to work simultaneously from both sides of the mold, improving work efficiency. Furthermore, the alternating pull ring design may help improve the overall structural stability of the mold, especially when the mold needs to withstand significant pressure or impact. Finally, the alternating installation of the pull rings may allow for a more compact mold within a limited space, helping to save space, especially when the mold needs to operate within a small working area.
[0022] This design is for molding composite fiber materials. Composite fiber materials, such as carbon fiber reinforced polymer (CFRP), have the characteristics of high strength, high stiffness, and lightweight, and are widely used in aerospace, automotive, and sporting goods industries.
Claims
1. A composite fiber material molding die structure, characterized in that: The device includes separable and combinable convex and concave modules. The convex module includes a base plate, support columns, a pressure plate, and insert columns. The pressure plate is provided on the base plate, and multiple support blocks are provided around the pressure plate and the base plate. An interval area is provided between the support blocks on both sides of the convex module along its length. A push plate is provided in the interval area, and a cylinder is provided on the push plate. Insert columns are provided at the four corners of the pressure plate, and a punch forming part is provided in the middle of the surface of the pressure plate. The concave module includes a top plate and a support plate. The support plate is provided on the base plate and matches the pressure plate. Insert holes are provided at the four corners of the support plate, and a die forming part matching the punch forming part is provided on the surface of the support plate. The contact surface between the punch forming part and the concave block is a convex-concave interlocking surface.
2. The composite fiber material molding die structure according to claim 1, characterized in that: A support column is provided between the base plate and the pressure plate.
3. The composite fiber material molding die structure according to claim 1, characterized in that: There are four interval zones.
4. The composite fiber material molding die structure according to claim 3, characterized in that: A first pull ring is provided on each side of the punch forming part. The first pull ring is close to the push cylinder, and the distance between the two first pull rings is greater than the width of the punch forming part.
5. The composite fiber material molding die structure according to claim 4, characterized in that: A second pull ring is provided on each side of the concave module.