Rotary feeding device for lithium battery insulating film

Abstract

The utility model discloses a lithium battery insulating film rotary feeding device which comprises a protective plate, a rotary table, baffles, a scraper fixing seat, a scraper, a barrier strip, a connecting block and an inductor, the rotary table is arranged on the protective plate, the bottom of the rotary table is connected with a rotary air cylinder, the baffles are arranged on the two opposite sides of the rotary table, the scraper is installed on the baffles through the scraper fixing seat, and the connecting block is connected with the scraper through the barrier strip. An insulating film is arranged between the scrapers, release paper is arranged below the insulating film, barrier strips are arranged on the other two opposite sides of the insulating film, the insulating film is arranged on a supporting plate, the two ends of the supporting plate are matched with sliding rails through connecting blocks, the sliding rails are arranged on the inner sides of the baffles, and positioning references are arranged below the barrier strips and on the upper portions of the baffles. A reference groove is formed in the partition plate below one side of the barrier strip, and an inductor is installed in the reference groove. By means of the rotating platform and the multi-station design, automatic positioning, conveying and efficient feeding of the insulating film are achieved, the production efficiency is greatly improved, the labor cost is reduced, and the alignment precision and the finished product quality are improved.

Description

Technical Field

[0001] This utility model relates to the field of lithium battery manufacturing, specifically to a rotary feeding device for lithium battery insulating film. Background Technology

[0002] With the widespread application of lithium batteries in consumer electronics, electric vehicles, and energy storage, the requirements for their safety and lifespan are increasingly stringent. During use, if a lithium battery cell is subjected to external impact or intrusion of internal metallic foreign objects, it is highly susceptible to safety hazards such as short circuits and thermal runaway. To mitigate these risks, an insulating film is typically added between the cells to block potential contact short circuits and, to some extent, prevent electrolyte leakage from corroding or short-circuiting adjacent cells. Commonly used insulating film materials in lithium battery production include polypropylene.

[0003] Materials such as polypropylene (PP) and polyimide (PI) have the following characteristics:

[0004] 1. Excellent insulation performance: effectively blocks short circuits caused by inter-cell or metallic foreign objects;

[0005] 2. Good chemical stability: It can withstand the corrosion of electrolyte for a long time, avoiding aging or cracking;

[0006] 3. Thinness: The thickness is usually only 0.2mm, which meets the requirements of lightweighting and is also easy to attach to the surface of the battery cell.

[0007] However, precisely because the insulating film material is very thin and light, high requirements are placed on its cutting and feeding processes in actual production. Generally, the insulating film needs to be punched into the corresponding shape by external die-cutting equipment, and then release paper or other auxiliary materials are attached to the bottom of the film so that subsequent bonding or assembly operations can be completed on the automated production line.

[0008] In existing technologies, the following problems are often encountered in the insulating film feeding process:

[0009] 1. Difficulty in ensuring alignment accuracy: The insulating film is thin and easily deformed. When feeding manually or using simple mechanical methods, problems such as bonding deviation, film wrinkling or secondary contamination are likely to occur, leading to a decrease in production yield.

[0010] 2. Low production efficiency: If the feeding process mainly relies on manual labor or semi-automated equipment, it is difficult to match the needs of modern large-scale lithium battery production, the production cycle is limited, and the overall capacity is affected.

[0011] 3. Inefficient process flow: Insulating film is usually die-cut into small pieces first, and then release paper is attached before it can be used in subsequent processes. If there is a lack of efficient conveying and feeding devices, it may cause inconsistent production line rhythm or stoppages, wasting manpower and equipment resources.

[0012] 4. Complex equipment structure and large footprint: Some existing equipment uses multiple machines working together to achieve functions such as die-cutting, release paper application, and handling. The structure is complex, the space utilization rate is low, and the investment cost of enterprises is increased.

[0013] In summary, in order to improve production efficiency and ensure alignment accuracy, this utility model designs a rotating feeding device for lithium battery insulating film. Utility Model Content

[0014] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a lithium battery insulating film rotary feeding device with a compact structure, high degree of automation and small footprint. By utilizing a rotary platform and multi-station design, it realizes automatic positioning, conveying and efficient feeding of insulating film, which greatly improves production efficiency, reduces labor costs and improves alignment accuracy and finished product quality.

[0015] To achieve the above objectives, this utility model provides the following technical solution: a rotary feeding device for lithium battery insulating film, comprising a protective plate, a turntable, baffles, a scraper fixing seat, a scraper, baffles, connecting blocks, and sensors. The protective plate has a turntable connected to a rotary cylinder at its bottom. Baffles are provided on two opposite sides of the turntable. Scrapers are mounted on the baffles via scraper fixing seats. An insulating film is placed between the scrapers, and release paper is placed below the insulating film. Baffles are provided on the other two opposite sides of the insulating film. The insulating film is mounted on a support plate. Both ends of the support plate are connected to slide rails via connecting blocks. The slide rails are located inside the baffles. Positioning references are provided below the baffles and above the baffles. A reference groove is provided on a partition below one side of the baffle, and a sensor is installed in the reference groove.

[0016] Preferably, both the scraper and the baffle have a serrated structure. Preferably, the sensor is a light curtain sensor.

[0017] The beneficial effects of this utility model are:

[0018] The main function of the scraper and stop bar in this invention is to exert a tearing force on the release paper at the bottom of the insulating film when the external robotic arm grasps and sucks it up. This reduces the adhesion between the edge of the insulating film and the release paper, making it easier for the robotic arm to tear off the release paper when moving to the next station. The scraper and stop bar feature a serrated design, primarily to reduce the contact area and prevent excessive force from causing the release paper to detach completely. A reference groove is provided on the partition, which can be used with a light curtain sensor to position its travel height according to different needs. Attached Figure Description

[0019] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments; Figure 1 is a schematic diagram of the structure of the present invention;

[0020] Figure 2 is a bottom view of this utility model. Detailed Implementation

[0021] 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.

[0022] Referring to Figures 1-2, this specific embodiment adopts the following technical solution: a rotary feeding device for lithium battery insulating film, including a protective plate 1, a turntable 2, a baffle 3, a scraper fixing seat 4, a scraper 5, a baffle 6, a connecting block 7, and a sensor 8. The protective plate 1 is provided with a turntable 2, the bottom of which is connected to a rotary cylinder 9. Baffles 3 are provided on two opposite sides of the turntable 2.

[0023] A scraper 5 is mounted on the scraper fixing seat 4. An insulating film 10 is placed between the scraper 5s. Release paper 11 is placed below the insulating film 10. Baffles 6 are placed on the other two opposite sides of the insulating film 10. The insulating film 10 is placed on the support plate 12. The two ends of the support plate 12 are connected to the slide rail via connecting blocks 7.

[0024] 13. The slide rail 13 is located inside the baffle 3, below the baffle strip 6, and above the baffle 3.

[0025] A positioning reference 14 is provided, and a reference groove is provided on the partition 15 below one side of the stop bar 6, and a sensor 8 is installed in the reference groove.

[0026] It is worth noting that both the scraper 5 and the baffle 6 adopt a serrated structure.

[0027] In addition, the sensor 8 is a light curtain sensor.

[0028] This specific embodiment achieves the insulating film through the cooperation of turntable 2 and rotary cylinder 9.

[0029] Rotary feeding. When the external robotic arm grabs the insulating film 10, the scraper 5 and the baffle 6...

[0030] A tearing force is applied to the release paper 11 at the bottom of the film to reduce the adhesion between the edge of the insulating film and the release paper.

[0031] The release paper is easily grasped and torn off by the robotic arm. The scraper 5 and stop bar 6 employ a serrated structure to reduce the contact area and prevent the release paper from completely detaching. The sensor 8 (light curtain sensor) is positioned via a reference slot to ensure accurate stroke height during robotic arm grasping, improving feeding precision.

[0032] This specific embodiment, through the tear-resistance design of the scraper 5 and the baffle 6, significantly reduces the adhesion force between the insulating film and the release paper, facilitating robotic gripping and release paper peeling, thus improving feeding efficiency. The serrated structure of the scraper 5 and the baffle 6 reduces the contact area and prevents the release paper from being easily peeled off.

[0033] Complete detachment ensures operational stability. The introduction of light curtain sensor 8 enables precise positioning, adapting to different height requirements and enhancing the flexibility and automation of the device. The overall structural design is reasonable and suitable for efficient feeding of lithium battery insulating film.

[0034] 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 lithium battery insulation film rotary feeding device, characterized in that, The utility model relates to a kind of rotary plate type insulating film cutting device, including shield (1), rotary plate (2), baffle (3), scraper fixed seat (4), scraper (5), fender (6), connecting block (7) and inductor (8), rotary plate (2) is provided on shield (1), rotary plate (2) bottom is connected with rotating cylinder (9), two pairs of sides of rotary plate (2) are provided with baffle (3), scraper (5) is installed in baffle (3) by scraper fixed seat (4), insulating film (10) is arranged between scraper (5), insulating film (10) below is provided with release paper (11), insulating film (10) other two pairs of sides are provided with fender (6), insulating film (10) is arranged on support plate (12), support plate (12) both ends are cooperated with slide rail (13) by connecting block (7), slide rail (13) is arranged in the inside of baffle (3), the below of fender (6) and the upper portion of baffle (3) are provided with positioning reference (14), reference groove is provided on the partition (15) below fender (6) one side, inductor (8) is installed in reference groove.

2. The rotating material loading device for lithium battery insulation film according to claim 1, characterized in that, The scraper (5) and the fender (6) are both sawtooth structures. 3.The rotary feeding device for lithium battery insulation film according to claim 1, characterized in that, The inductor (8) is a light curtain inductor.

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