Vacuum suction nozzle pulling device for lithium ion battery production

Abstract

The utility model discloses a vacuum suction nozzle pulling device for lithium ion battery production, and belongs to the technical field of battery production. A plurality of positioning strips are mounted on the mounting frame, the mounting block is fixed on the positioning strips, a vertically-through through cavity is formed in the mounting block, the two sides of the upper surface of the mounting block are fixedly connected with the lower ends of the corresponding springs respectively, the upper end of each spring is fixedly connected with the corresponding pulling block, the upper end of each pulling block is provided with a wedge-shaped surface inclined inwards, and the wedge-shaped surfaces are arranged on the upper surface of the mounting block. The two pulling blocks are symmetrically arranged, a working gap is reserved between the two pulling blocks, and the working gap corresponds to the upper end of the through cavity. The vacuum suction nozzle pulling device can automatically pull a plurality of vacuum suction nozzles at the same time, is convenient and safe to operate, improves the production efficiency, reduces the number of operators, and reduces the production cost. And meanwhile, complete pulling of the vacuum suction nozzle can be ensured, the phenomenon of lithium precipitation caused by gas marks in the use process of the battery is avoided, and the quality and the safety performance of a product are ensured.

Description

Technical Field

[0001] The utility model relates to a vacuum nozzle extraction device for lithium-ion battery production, belonging to the technical field of battery production. Background Technique

[0002] In the formation process of lithium-ion batteries, a large amount of gas will be generated inside the battery due to chemical reactions. If not processed in time, it may have an adverse impact on the battery performance and safety. Therefore, the negative pressure vacuum technology is usually adopted to effectively remove these gases and ensure the smooth progress of the formation process.

[0003] In the prior art, a negative pressure pipeline is connected to a vacuum nozzle made of rubber material, and the vacuum nozzle is tightly connected to the liquid injection hole of the battery to establish an effective gas transmission channel to achieve negative pressure vacuum extraction. However, with the extension of the production cycle and continuous operation, the vacuum nozzle will inevitably have problems such as aging, wear or blockage, which will affect its sealing performance and pumping efficiency. Currently, the common practice is to rely on manual replacement of the vacuum nozzle. But this method has the following disadvantages:

[0004] 1. In the formation workshop of lithium-ion batteries, the pin bed is often designed with a multi-layer structure (usually 3 - 4 layers) and is relatively high. In such an environment, manual replacement of the vacuum nozzle not only has a large operation difficulty, but also increases the safety risk of working at height, and it is difficult to ensure the safety of operators.

[0005] 2. Manual replacement of the vacuum nozzle requires a large amount of human resources, and due to the cumbersome operation and long time consumption, it affects the overall efficiency of the production line. At the same time, this also leads to an unnecessary increase in labor costs.

[0006] 3. There are uncontrollable factors in manual operation, such as negligence, fatigue, etc., which may cause some vacuum nozzles not to be replaced in time or not replaced thoroughly. In this case, the un-replaced vacuum nozzle may cause gas marks and lithium deposition phenomena during battery use due to aging, poor sealing, etc., which will increase the risk of battery thermal runaway and seriously threaten the product quality and safety performance. Content of the Utility Model

[0007] To solve the problems in the background technique, the utility model provides a vacuum nozzle extraction device for lithium-ion battery production.

[0008] To achieve the above object, the utility model adopts the following technical solution: A vacuum suction nozzle extraction device for lithium-ion battery production, comprising an extraction mechanism, a positioning strip, and a mounting frame; a plurality of juxtaposed positioning strips are installed on the mounting frame, and a plurality of juxtaposed extraction mechanisms are installed on each positioning strip. Each extraction mechanism includes an extraction block, a spring, and a mounting block; the mounting block is fixed on the positioning strip, a through cavity penetrating up and down is provided inside the mounting block, both sides of the upper surface of the mounting block are respectively fixedly connected to the lower ends of the corresponding springs, the upper end of each spring is respectively fixedly connected to the corresponding extraction block, an inwardly inclined wedge surface is provided at the upper end of each extraction block, the two extraction blocks are symmetrically arranged, and a working gap is left between the two extraction blocks. The working gap is correspondingly arranged with the upper end of the through cavity.

[0009] A receiving box is provided at the lower end of each mounting block, and the feed inlet of each receiving box is respectively communicated with the lower end of the through cavity of the corresponding mounting block. The receiving box is detachably fixed on the mounting frame.

[0010] An electromagnet and a power supply are fixed on the mounting frame, and the electromagnet is electrically connected to the power supply.

[0011] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0012] The utility model can automatically extract multiple vacuum suction nozzles simultaneously, with convenient and safe operation, increased production efficiency, reduced number of operators, and reduced production cost. At the same time, it can ensure the complete extraction of the vacuum suction nozzle, avoid the phenomenon of gas marks and lithium deposition during the use of the battery, and ensure the quality and safety performance of the product. Description of the Drawings

[0013] Figure 1 is the structural schematic diagram of the utility model;

[0014] Figure 2 is Figure 1 the front view of

[0015] Figure 3 is Figure 1 the top view of

[0016] Figure 4 is Figure 1 the sectional view of

[0017] Figure 5 is the structural schematic diagram of the extraction mechanism;

[0018] Figure 6 is Figure 5 the top view of

[0019] Figure 7 is Figure 5 the front view of Detailed implementation mode

[0020] The following will clearly and completely describe the technical solutions in the present utility model in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present utility model.

[0021] A vacuum nozzle extraction device for lithium-ion battery production includes an extraction mechanism 6, a positioning strip 7, and a mounting frame 8; a plurality of juxtaposed positioning strips 7 are mounted on the mounting frame 8, and a plurality of juxtaposed extraction mechanisms 6 are mounted on each positioning strip 7 to ensure that the extraction mechanisms 6 are aligned with the vacuum nozzles 1 one by one, so that when the formation needle bed presses down, the vacuum nozzles 1 can smoothly enter the extraction mechanisms 6 to complete the extraction of the vacuum nozzles 1. Each extraction mechanism 6 includes an extraction block 2, a spring 3, and a mounting block 4; the mounting block 4 is fixed on the positioning strip 7, a through cavity 5 that penetrates up and down is provided inside the mounting block 4, both sides of the upper surface of the mounting block 4 are respectively fixedly connected to the lower ends of the corresponding springs 3, the lower ends of the springs 3 are arranged in the corresponding mounting grooves, the upper ends of each spring 3 are respectively fixedly connected to the corresponding extraction block 2, and an inwardly inclined wedge surface is provided at the upper end of each extraction block 2. The two extraction blocks 2 are symmetrically arranged to ensure that the vacuum nozzle 1 can only move downward in the through cavity 5 of the extraction mechanism during the pressing process of the needle bed. A working gap is left between the two extraction blocks 2, and the working gap is correspondingly arranged with the upper end of the through cavity 5.

[0022] A receiving box 9 is provided at the lower end of each mounting block 4, and the feed ports of each receiving box 9 are respectively communicated with the lower ends of the through cavities 5 of the corresponding mounting blocks 4. The receiving box 9 is detachably fixed on the mounting frame 8 by interference fit or the like. After the vacuum nozzle 1 is extracted by the extraction mechanism 6, it falls into the lower receiving box 9, which is convenient for the recovery of the vacuum nozzle 1.

[0023] An electromagnet 10 and a power supply 11 are fixed on the mounting frame 8. The electromagnet 10 is electrically connected to the power supply 11. The power supply 11 is used to control the electromagnet 10 to generate suction with the formation needle bed, thereby increasing the counterweight to prevent the vacuum nozzle 1 from being too tight during the lifting of the needle bed and causing the failure of extracting the vacuum nozzle 1 by lifting the present utility model.

[0024] A method for using the vacuum nozzle extraction device for lithium-ion battery production of the present utility model is characterized in that the method includes the following steps:

[0025] S1: The formation stacker sends the extraction device into the formation needle bed;

[0026] S2: The formation needle bed is pressed down, and the vacuum suction nozzle 1 is docked with the through cavity 5 of the corresponding mounting block 4;

[0027] S3: After the vacuum suction nozzle 1 pushes the corresponding extraction block 2 to move, the vacuum suction nozzle 1 enters the corresponding through cavity 5;

[0028] S4: Transformation needle bed lift;

[0029] S5: The vacuum nozzle 1 completes the extraction under the action of the corresponding extraction block 2.

[0030] The utility model is provided with a one-way working extraction mechanism 6. When the formation needle bed is pressed down, the vacuum suction nozzle 1 can be precisely docked with the extraction mechanism 6, thereby realizing the extraction of the vacuum suction nozzle 1, and the removed vacuum suction nozzle will fall into the receiving box 9 below. At the same time, the positioning bar 7 can stabilize the position of the extraction mechanism 6, ensure the consistency of the extraction action, reduce the danger of personnel operation, improve production efficiency, and ensure the consistency of the battery production process.

[0031] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent conditions of the claims are included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

[0032] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A vacuum nozzle extraction device for lithium-ion battery production, characterized in that: The invention comprises an extraction mechanism (6), a positioning bar (7) and a mounting frame (8); the mounting frame (8) is provided with a plurality of positioning bars (7) arranged in parallel, each of the positioning bars (7) is provided with a plurality of extraction mechanisms (6) arranged in parallel, each of the extraction mechanisms (6) comprises an extraction block (2), a spring (3) and a mounting block (4); the mounting block (4) is fixed on the positioning bar (7), a through cavity (5) which passes through the mounting block (4) from top to bottom is provided inside the mounting block (4), both sides of the upper surface of the mounting block (4) are respectively fixedly connected to the lower end of the corresponding spring (3), the upper end of each of the springs (3) is respectively fixedly connected to the corresponding extraction block (2), the upper end of each of the extraction blocks (2) is provided with an inwardly inclined wedge-shaped surface, the two extraction blocks (2) are symmetrically arranged, a working gap is left between the two extraction blocks (2), and the working gap is arranged corresponding to the upper end of the through cavity (5).

2. A vacuum nozzle extraction device for lithium-ion battery production according to claim 1, characterized in that: A material receiving box (9) is provided at the lower end of each mounting block (4), and a material feed port of each material receiving box (9) is respectively connected to the lower end of the through cavity (5) of the corresponding mounting block (4), and the material receiving box (9) is detachably fixed on the mounting frame (8).

3. The vacuum nozzle extraction device for lithium-ion battery production according to claim 1, characterized in that: An electromagnet (10) and a power source (11) are fixed on the mounting frame (8), and the electromagnet (10) is electrically connected to the power source (11).

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