Plastic explosion-proof valve assembly tool

Abstract

The utility model discloses a kind of plastic explosion-proof valve assembly tool, it relates to power battery package assembly process field. Including lower locating block, the lower locating block is provided with limiting groove, lower locating block side is provided with limiting block, connecting block is provided above limiting groove, connecting block is connected with bending riveting pressure block, bending riveting pressure block is connected with hinge crank, connecting block is set below guide disc, a plurality of guide posts are provided above guide disc, guide post is connected with mounting plate, and mounting plate is connected with top plate by connecting plate. The utility model is accurately positioned by limiting groove and hinge crank pressure amplification design, realize the efficient, high-precision assembly of explosion-proof valve, and have modularization, durability and security advantage.

Description

Technical Field

[0001] This utility model relates to the field of power battery packaging and assembly processes, specifically to a plastic explosion-proof valve assembly fixture. Background Technology

[0002] With the rapid development of the new energy vehicle industry, the requirements for the safety of power batteries are becoming increasingly stringent. Lithium-ion batteries can generate a large amount of flammable gas and rapidly increase pressure when overcharged, short-circuited, or subjected to external impacts. If this gas cannot be released in time, it can cause the battery pack to explode or even ignite the entire vehicle. To address this, the explosion-proof valve, as a core safety component, utilizes a multi-layer structure combining a PET / AL / PP composite film layer and laser microporous processing to achieve a highly efficient pressure relief capability with a bidirectional air permeability of >5 L / (min·cm²) in an ultra-thin valve body ≤0.2 mm. It is triggered by phase change materials such as shape memory alloys or paraffin when the temperature reaches 60–80 ℃. Combined with a pressure sensitivity threshold of ±5 kPa, it can complete the pressure relief action in milliseconds, precisely controlling the internal pressure of the battery pack within a safe range of 0.3 MPa. However, explosion-proof valves are mostly composed of multi-layer composite membranes and microstructure components, assembled through a riveting process. Their thin and light structure places extremely high demands on riveting force and positioning accuracy. Traditional manual or general-purpose riveting machines often suffer from valve body damage, reduced airtightness, and increased rework rates due to improper force control or positioning deviations, making it difficult to meet the ever-increasing demands for quality and production capacity. Therefore, there is an urgent need for a specialized riveting fixture that can achieve precise and adjustable force, rapid positioning reset, online status monitoring, and ease of operation to ensure the reliability and consistency of explosion-proof valves in high-speed assembly lines. Utility Model Content

[0003] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a plastic explosion-proof valve assembly fixture, which achieves efficient and high-precision assembly of the explosion-proof valve through precise positioning of the limiting groove and pressure amplification design of the hinge crank, and has the advantages of modularity, durability and safety.

[0004] To achieve the above objectives, this utility model is implemented through the following technical solution: a plastic explosion-proof valve assembly fixture, including a lower positioning block, a limit groove in the lower positioning block, a limit block on the side of the lower positioning block, a connecting block above the limit groove, the connecting block being connected to a bending and riveting pressure block, the bending and riveting pressure block being connected to a hinge crank, the connecting block being located below a guide plate, a plurality of guide posts being located above the guide plate, the guide posts being connected to a mounting plate, and the mounting plate being connected to a top plate through the connecting plate.

[0005] Preferably, the limiting groove is used to accommodate the explosion-proof valve assembly.

[0006] Preferably, the bending and riveting pressure block completes the pressing and fixing of the explosion-proof valve component under the linkage of the hinge crank.

[0007] Preferably, the top plate is connected to the drive mechanism.

[0008] Preferably, the limiting block is detachable and replaceable to adapt to different models of explosion-proof valve assemblies.

[0009] The beneficial effects of this utility model are: 1. The dual positioning of the limit groove and guide post ensures the concentricity of the explosion-proof valve assembly and the pressure block, and the assembly tolerance can be controlled within ±0.1mm.

[0010] 2. The lever structure of the hinge crank and the bending riveting pressure block amplifies the pressure, reduces the load on the drive mechanism, and improves the pressing efficiency (cycle time ≤ 2 seconds / piece).

[0011] 3. The limit groove and pressure block can be quickly replaced to adapt to different models of explosion-proof valves, with a changeover time of less than 5 minutes.

[0012] 4. The guide pillars are made of hardened steel, and the guide discs are inlaid with self-lubricating bushings, ensuring no wear or jamming even after long-term use. Limit blocks prevent component misalignment and avoid the risk of parts splashing during the pressing process. Attached Figure Description

[0013] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments; Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is an exploded view 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 1-2 The specific embodiment adopts the following technical solution: a plastic explosion-proof valve assembly fixture, including a lower positioning block 1, a limit groove is provided in the lower positioning block 1, a limit block 2 is provided on the side of the lower positioning block 1, a connecting block 3 is provided above the limit groove, the connecting block 3 is connected to a bending and riveting pressure block 4, the bending and riveting pressure block 4 is connected to a hinge crank 5, the connecting block 3 is located below a guide plate 6, a plurality of guide posts 7 are provided above the guide plate 6, the guide posts 7 are connected to a mounting plate 8, and the mounting plate 8 is connected to a top plate 10 through a connecting plate 9.

[0016] It is worth noting that the limiting groove is used to accommodate the explosion-proof valve assembly 11.

[0017] It is worth noting that the bending and riveting pressure block 4, under the linkage of the hinge crank 5, completes the pressing and fixing of the explosion-proof valve component.

[0018] It is worth noting that the top plate 10 is connected to the drive mechanism.

[0019] Furthermore, the limiting block 2 is detachable and replaceable to adapt to different models of explosion-proof valve assemblies.

[0020] The working principle of this specific embodiment is as follows: The explosion-proof valve assembly is placed in the limiting groove of the lower positioning block 1, and is laterally positioned by the limiting block 2 to ensure accurate positioning of the assembly. The guide plate 6 cooperates with the guide post 7 to provide vertical movement guidance for the upper pressing mechanism, preventing deviation during pressing. The drive mechanism (such as a cylinder or hydraulic cylinder, not shown in the figure) pushes the top plate 10 down, transmitting pressure through the connecting plate 9 and the mounting plate 8. Under the linkage of the hinge crank 5, the bending and riveting pressure block 4 presses the plastic parts of the explosion-proof valve to the preset position, completing the riveting or snap-fit ​​fixation. After pressing is completed, the drive mechanism retracts, the guide post 7 guides the upper pressing mechanism to reset, the finished product is removed and a new assembly is placed in, and the next cycle begins.

[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 plastic explosion-proof valve assembly fixture, characterized in that, It includes a lower positioning block (1), a limiting groove is provided in the lower positioning block (1), a limiting block (2) is provided on the side of the lower positioning block (1), a connecting block (3) is provided above the limiting groove, the connecting block (3) is connected to the bending and riveting pressure block (4), the bending and riveting pressure block (4) is connected to the hinge crank (5), the connecting block (3) is located below the guide plate (6), a plurality of guide posts (7) are provided above the guide plate (6), the guide posts (7) are connected to the mounting plate (8), and the mounting plate (8) is connected to the top plate (10) through the connecting plate (9).

2. The assembly fixture for a plastic explosion-proof valve according to claim 1, characterized in that, The limiting groove is used to accommodate the explosion-proof valve assembly (11).

3. The assembly fixture for a plastic explosion-proof valve according to claim 1, characterized in that, The bending and riveting pressure block (4) completes the pressing and fixing of the explosion-proof valve component under the linkage of the hinge crank (5).

4. The assembly fixture for a plastic explosion-proof valve according to claim 1, characterized in that, The top plate (10) is connected to the drive mechanism.

5. The assembly fixture for a plastic explosion-proof valve according to claim 1, characterized in that, The limiting block (2) is detachable and replaceable to adapt to different models of explosion-proof valve assemblies.

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