A protective film cutting device for automotive battery products

By designing an automated cutting device, combined with dynamic heat dissipation and an automatic cleaning mechanism, the problems of low efficiency, difficulty in achieving uniform precision, high safety risks, and insufficient heat dissipation in existing technologies have been solved, realizing an efficient and safe protective film cutting process.

CN224575789UActive Publication Date: 2026-07-31KUNSHAN BOQIAN ELECTRONICS CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
KUNSHAN BOQIAN ELECTRONICS CO LTD
Filing Date
2025-11-05
Publication Date
2026-07-31

AI Technical Summary

Technical Problem

Existing automotive battery protective film cutting devices suffer from low efficiency, difficulty in achieving uniform precision, high safety risks, and difficulty in adapting to rapid switching between different battery models. They also lack sufficient heat dissipation efficiency and uniformity.

Method used

A comprehensive solution including a cutting device, a heat dissipation device, and a cleaning device was designed. The solution utilizes a motor-driven crank-slider mechanism to achieve dynamic all-round heat dissipation and achieves automated cleaning through the meshing of a half gear and a rack to ensure unobstructed heat dissipation holes.

Benefits of technology

It achieves an efficient and automated protective film cutting process, improves heat dissipation efficiency and uniformity, ensures cleaning effect, and reduces safety risks and material waste.

✦ Generated by Eureka AI based on patent content.

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Abstract

This utility model relates to the field of cutting device technology, specifically a cutting device for protective film of automotive battery products. The cutting device includes a base, an operating table fixedly connected to one side of the base, a heat dissipation hole on one side of the operating table, and a conveying mechanism at the top of the base. The beneficial effect of this utility model is that after the motor is started, the output shaft drives the fixedly connected rotating shaft to rotate. The distal end of the connecting plate is slidably connected to a sliding sleeve, which is movably fitted onto the circumferential surface of a fixed cylinder, allowing for reciprocating vertical swing with one degree of freedom. While the activated fan continuously rotates and delivers air, its airflow direction is periodically swept under the influence of the heat dissipation device, thereby achieving dynamic, all-round forced convection heat dissipation of the internal space of the operating table, effectively improving heat dissipation efficiency and uniformity.
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Description

Technical Field

[0001] This utility model relates to the field of cutting device technology, specifically a cutting device for protective film of automotive battery products. Background Technology

[0002] In the production process of automotive power batteries, core components such as battery cells require a protective film to prevent scratches and contamination during transportation, storage, and processing. Traditionally, the cutting of this protective film relies heavily on manual labor or simple jigs, which has significant drawbacks: firstly, manual measurement and cutting are inefficient, lack consistent precision, and easily lead to material waste; secondly, blade cutting requires highly skilled workers and poses safety risks; and thirdly, it is difficult to adapt to rapid switching between different battery models and sizes, hindering the improvement of production line cycle time and automation levels. Therefore, there is an urgent need for a dedicated cutting device that can achieve automation, high precision, and flexible adjustment to meet the high demands of modern intelligent battery manufacturing for efficiency, quality, and safety.

[0003] Existing automotive battery product protective film cutting devices are unable to achieve dynamic, all-round forced convection heat dissipation within the operating table space, making it difficult to improve heat dissipation efficiency and uniformity. Utility Model Content

[0004] The purpose of this invention is to provide a protective film cutting device for automotive battery products to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a cutting device for protective film of automotive battery products, comprising a cutting device, the cutting device including a base, an operating table fixedly connected to one side of the base, a heat dissipation hole on one side of the operating table, a conveying mechanism at the top of the base, and a cutting mechanism at the top of the base; further comprising a heat dissipation device for dissipating heat from the inside of the operating table; and a cleaning device for cleaning the heat dissipation hole; the heat dissipation device including a rotating shaft, on the circumference of which a transmission belt is fitted.

[0006] Preferably, the heat dissipation device includes an L-shaped support plate, a motor is fixedly connected to the top of the L-shaped support plate, a rotating shaft is fixedly connected to the output shaft of the motor, the end of the rotating shaft away from the motor passes through the L-shaped support plate and is rotatably connected to the L-shaped support plate, a connecting plate is fixedly connected to the end of the rotating shaft away from the L-shaped support plate, a sliding sleeve is slidably connected to the end of the connecting plate away from the rotating shaft, the end of the sliding sleeve away from the connecting plate is sleeved on the circumferential surface of the cylinder, connecting plates are fixedly connected to both ends of the cylinder, a long plate is slidably connected to the end of the connecting plate away from the cylinder, a cylindrical plate is rotatably connected to the end of the connecting plate away from the cylinder, a fixing plate is fixedly connected to the circumferential surface of the cylindrical plate, and a fan is fixedly connected to the top of the fixing plate.

[0007] Preferably, one end of the L-shaped support plate is fixedly connected to the inner wall of the operating table, the long plate has two symmetrical parts along the axial direction, and both ends of the cylindrical plate are penetrated by a connecting plate and a long plate, and are fixedly connected to the connecting plate and rotatably connected to the long plate.

[0008] Preferably, the cleaning device includes a transmission belt, one end of which is fitted onto the circumferential surface of a circular plate. A fixed block is rotatably connected to one end of the circular plate, and a half gear is fixedly connected to the end of the circular plate away from the fixed block. A rack is provided on the circumferential surface of the half gear, and a sliding groove is connected to the bottom of the rack. A spring telescopic rod is fixedly connected to the end of the sliding groove away from the rack, and an L-shaped scraper is fixedly connected to the end of the rack away from the half gear.

[0009] Preferably, the end of the fixing block away from the circular plate is fixedly connected to the inner wall of the operating table, and the half gear and the rack mesh with each other.

[0010] Preferably, the end of the spring telescopic rod away from the slide groove is fixedly connected to the rack, and the L-shaped scraper is in close contact with the heat dissipation hole.

[0011] Preferably, the operating table has an internal cavity.

[0012] Compared with the prior art, the beneficial effects of this utility model are: 1. After the motor starts, the output shaft drives the fixedly connected rotating shaft to rotate. A connecting plate is fixedly connected to the end of the rotating shaft furthest from the motor, causing the connecting plate to move in a circular motion with the rotating shaft. The far end of the connecting plate is connected to a sliding sleeve via a sliding connection, and the sliding sleeve is movably fitted onto the circumferential surface of the fixed cylinder, allowing it to reciprocate up and down with one degree of freedom. The swinging of the connecting plate further drives the cylindrical plate fixedly connected to it to move together. The fixed plate and the fan at its top, fixedly mounted on the circumferential surface of the cylindrical plate, also swing up and down accordingly. While the activated fan continuously rotates and delivers air, its airflow direction is periodically swept by the cooling device, thereby providing dynamic, all-round forced convection cooling of the internal space of the operating table, effectively improving heat dissipation efficiency and uniformity.

[0013] 2. A drive belt, driven by a rotating shaft, rotates a circular plate and its coaxially fixed half-gear continuously. When the toothed part of the half-gear meshes with the rack, it drives the rack to move linearly along the groove at its bottom, scraping and cleaning the heat dissipation holes. When the half-gear rotates to the toothless, smooth section, its meshing with the rack disengages. At this time, a spring-loaded telescopic rod connected to the rack provides a reverse driving force, causing the rack to quickly reset under the guidance of the groove, and driving the L-shaped scraper back to its initial position. This achieves efficient and reliable automated periodic cleaning of the heat dissipation holes, solving the problem of decreased heat dissipation performance caused by the accumulation of dust and debris. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the motor structure of this utility model; Figure 3 This is a schematic diagram of the L-shaped support plate structure of this utility model; Figure 4 This is a schematic diagram of the half-gear structure of this utility model; Figure 5 This is an enlarged structural diagram of point A of this utility model.

[0015] The components represented by each number in the attached diagram are listed below: 1. Cutting device; 101. Base; 102. Operating table; 103. Heat dissipation hole; 104. Conveying mechanism; 105. Cutting mechanism; 2. Heat dissipation device; 201. Motor; 202. Rotating shaft; 203. Connecting plate; 204. Sliding sleeve; 205. Cylinder; 206. Connecting plate; 207. Cylindrical plate; 208. Fixing plate; 209. Fan; 210. L-shaped support plate; 211. Long plate; 3. Cleaning device; 301. Transmission belt; 302. Circular plate; 303. Fixing block; 304. Half gear; 305. Rack; 306. Slide groove; 307. Spring telescopic rod; 308. L-shaped scraper. Detailed Implementation

[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0017] This utility model provides a technical solution: such as Figure 1 Figure 5 shows a cutting device for protective film of automotive battery products, including a cutting device 1, which includes a base 101, an operating table 102 fixedly connected to one side of the base 101, a heat dissipation hole 103 on one side of the operating table 102, a conveying mechanism 104 and a cutting mechanism 105 at the top of the base 101; it also includes a heat dissipation device 2 for dissipating heat inside the operating table 102; and a cleaning device 3 for cleaning the heat dissipation hole 103; the heat dissipation device 2 includes a rotating shaft 202, and a transmission belt 301 is sleeved on the circumferential surface of the rotating shaft 202.

[0018] The heat dissipation device 2 includes an L-shaped support plate 210. A motor 201 is fixedly connected to the top of the L-shaped support plate 210. A rotating shaft 202 is fixedly connected to the output shaft of the motor 201. The end of the rotating shaft 202 away from the motor 201 passes through the L-shaped support plate 210 and is rotatably connected to it. A connecting plate 203 is fixedly connected to the end of the rotating shaft 202 away from the L-shaped support plate 210. A sliding sleeve 204 is slidably connected to the end of the connecting plate 203 away from the rotating shaft 202. The end of the sliding sleeve 204 away from the connecting plate 203 is sleeved on the circumferential surface of the cylinder 205. The two ends of 5 are fixedly connected to a connecting plate 206. The end of the connecting plate 206 away from the cylinder 205 is slidably connected to a long plate 211. The end of the connecting plate 206 away from the cylinder 205 is rotatably connected to a cylindrical plate 207. A fixing plate 208 is fixedly connected to the circumference of the cylindrical plate 207. A fan 209 is fixedly connected to the top of the fixing plate 208. The above design is advantageous because the connecting plate 203 is slidably connected to a sliding sleeve 204 at the end away from the rotating shaft 202, which enables the connecting plate 203 to drive the cylinder 205 to swing up and down through the rotation of the rotating shaft 202 and the sliding of the sliding sleeve 204.

[0019] One end of the L-shaped support plate 210 is fixedly connected to the inner wall of the operating table 102. There are two long plates 211 that are symmetrical along the axis. Both ends of the cylindrical plate 207 are penetrated by the connecting plate 206 and the long plate 211, and are fixedly connected to the connecting plate 206 and rotatably connected to the long plate 211. The above design is advantageous because the cylindrical plate 207 is penetrated by the connecting plate 206 and the long plate 211 at both ends, and is rotatably connected to the connecting plate 206 and the long plate 211, so that the rotation of the connecting plate 206 can drive the fixed plate 208 to rotate through the supporting force.

[0020] The cleaning device 3 includes a transmission belt 301, one end of which is fitted onto the circumferential surface of a circular plate 302. A fixed block 303 is rotatably connected to one end of the circular plate 302. A half gear 304 is fixedly connected to the end of the circular plate 302 away from the fixed block 303. A rack 305 is provided on the circumferential surface of the half gear 304. A sliding groove 306 is connected to the bottom of the rack 305. A spring telescopic rod 307 is fixedly connected to the end of the sliding groove 306 away from the rack 305. An L-shaped scraper 308 is fixedly connected to the end of the rack 305 away from the half gear 304. The above design, by fixing the spring telescopic rod 307 to the end of the sliding groove 306 away from the rack 305, can provide power for the automatic reset of one end of the rack 305.

[0021] The end of the fixed block 303 away from the circular plate 302 is fixedly connected to the inner wall of the operating table 102. The half gear 304 and the rack 305 mesh with each other. The above design is beneficial to convert the rotational motion of the half gear 304 into the intermittent linear motion of the rack 305 through the meshing of the half gear 304 and the rack 305.

[0022] The end of the spring telescopic rod 307 away from the slide groove 306 is fixedly connected to the rack 305, and the L-shaped scraper 308 is close to the heat dissipation hole 103. The above design is conducive to cleaning the heat dissipation hole 103 by the L-shaped scraper 308 close to the heat dissipation hole 103, and preventing dust and debris from clogging the heat dissipation hole 103.

[0023] The operating table 102 has an internal cavity, which provides an installation location and movement space for the heat dissipation device 2 and the cleaning device 3.

[0024] Working Principle: First, after the motor 201 is started, the output shaft drives the fixedly connected rotating shaft 202 to rotate. A connecting plate 203 is fixedly connected to the end of the rotating shaft 202 furthest from the motor 201, causing the connecting plate 203 to move in a circular motion with the rotating shaft 202. The far end of the connecting plate 203 is connected to a sliding sleeve 204 via a sliding connection, and the sliding sleeve 204 is movably fitted onto the circumferential surface of the fixed cylinder 205. This design constitutes a variant of a crank-slider mechanism, which converts the circular motion of the connecting plate 203 into linear sliding of the sliding sleeve 204 on the cylinder 205, ultimately driving the connecting plate 206, fixedly connected to both ends of the cylinder 205, to reciprocate up and down in one degree of freedom. The oscillation of the connecting plate 206 further drives the cylindrical plate 207, fixedly connected to it, to move together. Both ends of the cylindrical plate 207 pass through the connecting plate 206 and symmetrically arranged long plates 211 on both sides, forming a rotational connection with the long plates 211. This structure provides stable support for the rotation of the cylindrical plate 207 and allows it to swing under the drive of the connecting plate 206. The fixed plate 208, which is fixedly installed on the circumference of the cylindrical plate 207, and the fan 209 at its top also swing up and down accordingly. While the activated fan 209 continuously rotates and delivers air, its airflow direction is periodically swept under the drive of the heat dissipation device 2, thereby providing dynamic and all-round forced convection heat dissipation for the internal space of the operating table 102, effectively improving heat dissipation efficiency and uniformity.

[0025] Then, the drive belt 301 is driven by the rotating shaft 202, which drives the circular plate 302 and its coaxially fixed half gear 304 to rotate continuously. When the toothed part of the half gear 304 meshes with the rack 305, it drives the rack 305 to move linearly along the slide groove 306 at its bottom. The L-shaped scraper 308 fixed to one end of the rack 305 moves to one side, thus cleaning the heat dissipation hole 103. When the half gear 304 rotates to the toothless smooth section, its meshing relationship with the rack 305 is released. At this time, the spring telescopic rod 307 connected to the rack 305 releases the elastic potential energy stored in the previous working stage, providing a reverse driving force for the rack 305, which quickly resets under the guidance of the slide groove 306 and drives the L-shaped scraper 308 back to its initial position. The L-shaped scraper 308 remains in close contact with the surface of the heat dissipation hole 103 throughout this process, ensuring the cleaning effect. Thus, with each rotation of the half gear 304, the cleaning device completes a "scraping forward - spring reset" work cycle, achieving efficient and reliable automated periodic cleaning of the heat dissipation holes 103, and solving the problem of reduced heat dissipation performance caused by the accumulation of dust and debris.

[0026] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0027] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A cutting device for protective film of automotive battery products, comprising a cutting device (1), characterized in that: The cutting device (1) includes a base (101), an operating table (102) is fixedly connected to one side of the base (101), a heat dissipation hole (103) is provided on one side of the operating table (102), a conveying mechanism (104) is provided at the top of the base (101), and a cutting mechanism (105) is provided at the top of the base (101). It also includes a heat dissipation device (2) for dissipating heat from the inside of the worktable (102); A cleaning device (3) is used to clean the heat dissipation holes (103); The heat dissipation device (2) includes a rotating shaft (202), and a transmission belt (301) is fitted on the circumferential surface of the rotating shaft (202).

2. The automotive battery product protective film cutting device according to claim 1, characterized in that: The heat dissipation device (2) includes an L-shaped support plate (210). A motor (201) is fixedly connected to the top of the L-shaped support plate (210). A rotating shaft (202) is fixedly connected to the output shaft of the motor (201). The end of the rotating shaft (202) away from the motor (201) passes through the L-shaped support plate (210) and is rotatably connected to the L-shaped support plate (210). A connecting plate (203) is fixedly connected to the end of the rotating shaft (202) away from the L-shaped support plate (210). A sliding sleeve is slidably connected to the end of the connecting plate (203) away from the rotating shaft (202). (204) The end of the sliding sleeve (204) away from the connecting plate (203) is sleeved on the circumferential surface of the cylinder (205). The two ends of the cylinder (205) are fixedly connected to the connecting plate (206). The end of the connecting plate (206) away from the cylinder (205) is slidably connected to the long plate (211). The end of the connecting plate (206) away from the cylinder (205) is rotatably connected to the cylindrical plate (207). The circumferential surface of the cylindrical plate (207) is fixedly connected to the fixing plate (208). The top end of the fixing plate (208) is fixedly connected to the fan (209).

3. The automotive battery product protective film cutting device according to claim 2, characterized in that: One end of the L-shaped support plate (210) is fixedly connected to the inner wall of the operating table (102). The long plate (211) has two symmetrical parts along the axial direction. Both ends of the cylindrical plate (207) are connected by a connecting plate (206) and the long plate (211), and are fixedly connected to the connecting plate (206) and rotatably connected to the long plate (211).

4. The automotive battery product protective film cutting device according to claim 1, characterized in that: The cleaning device (3) includes a transmission belt (301), one end of which is sleeved on the circumferential surface of a circular plate (302). A fixed block (303) is rotatably connected to one end of the circular plate (302). A half gear (304) is fixedly connected to the end of the circular plate (302) away from the fixed block (303). A rack (305) is provided on the circumferential surface of the half gear (304). A sliding groove (306) is connected to the bottom of the rack (305). A spring telescopic rod (307) is fixedly connected to the end of the sliding groove (306) away from the rack (305). An L-shaped scraper (308) is fixedly connected to the end of the rack (305) away from the half gear (304).

5. The automotive battery product protective film cutting device according to claim 4, characterized in that: The end of the fixed block (303) away from the circular plate (302) is fixedly connected to the inner wall of the operating table (102), and the half gear (304) and the rack (305) mesh with each other.

6. The automotive battery product protective film cutting device according to claim 4, characterized in that: The end of the spring telescopic rod (307) away from the slide groove (306) is fixedly connected to the rack (305), and the L-shaped scraper (308) is close to the heat dissipation hole (103).

7. The automotive battery product protective film cutting device according to claim 1, characterized in that: The operating table (102) has a cavity inside.