PC insulating sheet hot-pressing bending mechanism
The hot-pressing bending process solved the problem of cold-processing rebound of PC insulation sheets, achieving high-precision and low-cost production, and improving the assembly quality and safety of power batteries and energy storage battery modules.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- 宁德聚能动力电源系统技术有限公司
- Filing Date
- 2025-04-28
- Publication Date
- 2026-05-12
AI Technical Summary
Traditional processes are prone to rebound after cold processing of PC insulation sheets, resulting in low production efficiency, high costs, and impact on product quality and safety, especially in power battery and energy storage battery modules where assembly is difficult.
The hot-pressing bending process uses a heating base and a cylinder-driven pressing block to achieve precise temperature control and shaping. Combined with an L-shaped reference structure and an elastic connecting rod design, it avoids material rebound and improves bending accuracy and consistency.
It significantly improves the bending accuracy and consistency of PC insulation sheets, reduces mold costs, increases product yield, shortens molding cycle, and ensures production stability and efficiency.
Smart Images
Figure CN224224507U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of manufacturing power batteries and energy storage batteries, specifically to a hot-pressing bending mechanism for PC insulating sheets. Background Technology
[0002] With the widespread application of new energy vehicles, energy storage systems, and various electrical equipment, the safety and reliability requirements for power batteries and energy storage batteries, as their core energy components, are becoming increasingly stringent. PC (polycarbonate) insulating sheets, as important functional materials in battery modules, play crucial roles in electrical isolation, mechanical protection, thermal management, and chemical stability. Their stable chemical properties, corrosion resistance, high-temperature resistance, and impact resistance have led to their widespread use in the new energy battery field. During the manufacturing process of battery modules, insulating sheets typically require shaping and bending according to the battery structure requirements. For some simple planar bending PC insulating sheets, the thickness is usually 0.5mm, and the production of these thin insulating sheets often faces significant technological challenges. While traditional vacuum forming processes can produce insulating sheets that meet the requirements, this process is complex and requires mold production, which leads to a situation of small-batch production with large-scale manufacturing at low cost, thus increasing production costs.
[0003] Furthermore, when using traditional sheet metal cold bending processes to process PC materials, due to the inherent material properties of PC, the material is prone to rebound over time after cold bending, leading to difficulties in the final assembly process. This rebound phenomenon not only affects production efficiency but may also affect product quality, especially in power batteries and energy storage battery modules with high precision requirements. Assembly problems caused by rebound can affect the overall performance and safety of the battery system.
[0004] Therefore, in order to avoid the limitations of traditional processes and further optimize the production process, improve production efficiency, and reduce costs, it is particularly urgent to design a new solution. Utility Model Content
[0005] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a hot pressing bending mechanism for PC insulation sheets. By introducing a hot pressing process into the bending process of PC insulation sheets, the material can be shaped faster by using temperature, avoiding the occurrence of rebound phenomenon, thereby effectively solving the problem of assembly difficulties and improving the stability and efficiency of the production process.
[0006] To achieve the above objectives, this utility model provides the following technical solution: a PC insulation sheet hot-pressing bending mechanism, comprising a fixed base plate, a support plate, a heating seat, a pad, a reference partition, a pressure block, a heating seat fixing plate, a pressure plate, a cylinder mounting plate, a pressing cylinder, a guide rod, and a limit adjustment block. The fixed base plate is connected to the cylinder mounting plate via the support plate. The cylinder mounting plate is provided with a pressing cylinder and a bushing. A guide rod passes through the bushing. The lower end of the guide rod and the cylinder rod of the pressing cylinder are both connected to the pressure plate. The pressure plate is connected to the heating seat fixing plate via an elastic connecting rod. A heating seat is provided below the heating seat fixing plate, and a pressure block is provided below the heating seat. A pad is provided on the fixed base plate below the pressure block, and a reference partition is provided on the inner side of the pad.
[0007] Preferably, the outer side of the support plate is provided with reinforcing ribs.
[0008] Preferably, the height of the pad is lower than the height of the reference partition, and the reference partition and the pad form an L-shape.
[0009] Preferably, the back of the reference partition is connected to a limit adjustment block, which engages with a sliding groove on the fixed base plate, and the limit adjustment block is fixed to the fixed base plate by screws.
[0010] The beneficial effects of this utility model are as follows: The hot-press bending process effectively solves the problem of rebound after cold processing of PC insulation sheets. The heating base with precise temperature control and the L-shaped reference structure are used to achieve rapid hot pressing and shaping under the drive of the cylinder, which significantly improves the bending accuracy (up to ±0.1mm) and consistency. Compared with the traditional vacuum forming process, the mold cost is reduced by 80%, and the single forming cycle is shortened to within 15 seconds. At the same time, the elastic connecting rod design avoids material damage due to overpressure, which improves the product yield to over 99.5%. Attached Figure Description
[0011] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments;
[0012] Figure 1 This is a schematic diagram of the structure of this utility model;
[0013] Figure 2 This is a schematic diagram of another orientation of the present invention. Detailed Implementation
[0014] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.
[0015] Reference Figure 1The specific embodiment adopts the following technical solution: a PC insulation sheet hot pressing bending mechanism, including a fixed base plate 1, a support plate 2, a heating seat 4, a pad 5, a reference partition 6, a pressure block 7, a heating seat fixing plate 8, a pressure plate 9, a cylinder mounting plate 10, a pressing cylinder 11, a guide rod 12, and a limit adjustment block 13. The fixed base plate 1 is connected to the cylinder mounting plate 10 through the support plate 2. The cylinder mounting plate 10 is provided with a pressing cylinder 11 and a bushing. The guide rod 12 passes through the bushing. The lower end of the guide rod 12 and the cylinder rod of the pressing cylinder 11 are both connected to the pressure plate 9. The pressure plate 9 is connected to the heating seat fixing plate 8 through an elastic connecting rod. A heating seat 4 is provided below the heating seat fixing plate 8. A pressure block 7 is provided below the heating seat 4. A pad 5 is provided on the fixed base plate 1 below the pressure block 7. A reference partition 6 is provided on the inner side of the pad 5.
[0016] It is worth noting that a reinforcing rib plate 3 is provided on the outer side of the support plate 2.
[0017] It is worth noting that the height of the pad 5 is lower than the height of the reference partition 6, and the reference partition 6 and the pad 5 form an L-shape.
[0018] In addition, the back of the reference partition 6 is connected to a limit adjustment block 13, which cooperates with the slide groove 14 on the fixed base plate 1, and the limit adjustment block 13 is fixed to the fixed base plate 1 by screws.
[0019] The working principle of this specific implementation method is as follows: when the temperature of the heating seat has been fully transferred to the set temperature of the pressure block, the cut insulating sheet is placed on the reference partition with the help of auxiliary tooling, and the pressure cylinder pushes the pressure block down. After the insulating sheet is completely bent and shaped, the operation is resumed.
[0020] This specific embodiment introduces a hot-pressing process during the bending of PC insulation sheets, which can accelerate material shaping by utilizing temperature, avoid the occurrence of rebound, and thus effectively solve the problem of assembly difficulties, improve the stability and efficiency of the production process.
[0021] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.
Claims
1. A hot-pressing bending mechanism for PC insulating sheets, characterized in that, The system includes a fixed base plate (1), a support plate (2), a heating base (4), a pad (5), a reference partition plate (6), a pressure block (7), a heating base fixing plate (8), a pressure plate (9), a cylinder mounting plate (10), a pressing cylinder (11), and a guide rod (12). The fixed base plate (1) is connected to the cylinder mounting plate (10) via the support plate (2). The cylinder mounting plate (10) is equipped with a pressing cylinder (11) and a bushing. A guide rod passes through the bushing. The lower end of the guide rod (12) and the cylinder rod of the pressing cylinder (11) are all connected to the pressure plate (9). The pressure plate (9) is connected to the heating seat fixing plate (8) through the elastic connecting rod. A heating seat (4) is provided below the heating seat fixing plate (8). A pressure block (7) is provided below the heating seat (4). A pad (5) is provided on the fixed base plate (1) provided below the pressure block (7). A reference partition (6) is provided on the inner side of the pad (5).
2. The PC insulation sheet hot-pressing bending mechanism according to claim 1, characterized in that, The outer side of the support plate (2) is provided with a reinforcing rib plate (3).
3. The PC insulation sheet hot-pressing bending mechanism according to claim 1, characterized in that, The height of the pad (5) is lower than the height of the reference partition (6), and the reference partition (6) and the pad (5) form an L-shape.
4. The PC insulation sheet hot-pressing bending mechanism according to claim 1, characterized in that, The back of the reference partition (6) is connected to a limit adjustment block (13), which cooperates with the slide groove (14) on the fixed base plate (1) and is fixed to the fixed base plate (1) by screws.