A transitional mechanism for film quality inspection

Abstract

This invention relates to the field of thin film manufacturing technology and discloses a thin film quality inspection transition mechanism, including a frame, a traction device, a thickness gauge, a defect detector, and a metal particle adsorption device arranged sequentially on the frame. The metal particle adsorption device includes an adsorption structure on the inner side of a crossbeam, a first guide roller, and an adsorption structure on the outer side. The adsorption structure on the inner side includes a slider fixed on the crossbeam and a guide rail slidably connected to the slider. The guide rail extends laterally and can move laterally relative to the slider. Two support arms are provided on the guide rail, and the two support arms jointly support a laterally extending inner magnetic rod. The inner magnetic rod is used to adsorb metal particles on the inner side of the film. The inner magnetic rod is moved laterally by the sliding guide rail, cleverly removing the film cover, which facilitates the worker to quickly clean the inner magnetic rod.

Description

Technical Field

[0001] This invention relates to the field of thin film manufacturing technology, and in particular to a thin film quality inspection transition mechanism. Background Technology

[0002] Lithium-ion battery separators are thin films with microporous structures and are a key component of lithium-ion batteries. During the production line of lithium-ion battery separators, fine metal powder can adhere to the membrane as it passes through various processes. The presence of this metal powder directly affects the surface quality of the membrane. If the metal powder is not thoroughly removed from the membrane surface during production, the lithium battery may experience a short circuit during use, leading to product safety issues.

[0003] Therefore, after the film completes quality inspection, it passes through a metal particle adsorption device. This device uses magnetic rods to adsorb micro-metal particles onto both sides of the film before finally conveying it to the film winding machine. Figure 5 As shown, a guide roller 912, a front magnetic rod 913, and a rear magnetic rod 914 are fixedly mounted on the support 911. The guide roller 912 guides the film 915 upward, allowing the film 15 to pass sequentially through the front magnetic rod 913 and the rear magnetic rod 914. The front magnetic rod 913 is used to attract the front side of the film 15, and the rear magnetic rod 914 is used to attract the back side of the film 15. After prolonged attraction, metallic impurities will accumulate on the surfaces of the front magnetic rod 913 and the rear magnetic rod 914, weakening the magnetic force. The front magnetic rod 913 and the rear magnetic rod 914 need to be cleaned regularly. The front magnetic rod 913 is located on the outside of the film, so the staff can clean or replace the front magnetic rod 913 without any obstruction. However, the rear magnetic rod 914 is located on the inside of the film 15. The film 15 covers the rear magnetic rod 914, and there is no operating space under or behind the rear magnetic rod due to the obstruction of the frame, film and other equipment. Therefore, it is difficult to clean the rear magnetic rod 914. It may even be necessary to stop the machine and remove the film 15 to clean the rear magnetic rod 914, which will affect the normal production cycle.

[0004] It is evident that existing technologies still need improvement and enhancement. Summary of the Invention

[0005] In view of the shortcomings of the prior art, the purpose of the present invention is to provide a thin film quality inspection transition mechanism, which is designed to facilitate the cleaning of the internal magnetic rod on the metal particle adsorption device.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A thin film quality inspection transition mechanism includes a frame, a traction device, a thickness gauge, a defect detector, and a metal particle adsorption device arranged sequentially on the frame. The metal particle adsorption device includes a crossbeam fixed on the frame, an inner side adsorption structure disposed above the crossbeam, a first guide roller disposed in front of the crossbeam, and an outer side adsorption structure. The first guide roller is used to guide the thin film through the side adsorption structure and the outer side adsorption structure. The outer side adsorption structure is used to adsorb metal particles on the outer surface of the thin film. The inner side adsorption structure includes a slider fixed on the crossbeam and a guide rail slidably connected to the slider. The guide rail extends laterally and can move laterally relative to the slider. The guide rail is provided with two support arms, which together support a laterally extending inner magnetic rod. The inner magnetic rod is used to adsorb metal particles on the inner surface of the thin film.

[0008] As a further improvement to the above technical solution, the guide rail is provided with a concave seat that cooperates with the support arm. One end of the support arm is embedded in the concave seat and has an elongated hole extending along the length of the support arm. The concave seat is provided with a first threaded hole corresponding to the elongated hole. The support arm is connected to the concave seat by adjusting the screw and cooperating with the elongated hole and the first threaded hole.

[0009] As a further improvement to the above technical solution, the other end of the support arm forms a clamping block, and the side of the clamping block is provided with a through hole for the inner magnetic rod to pass through, and a second threaded hole communicating with the through hole is provided, and a locking screw for locking the inner magnetic rod is fitted at the second threaded hole.

[0010] As a further improvement to the above technical solution, push-pull handles are provided at both ends of the guide rail.

[0011] As a further improvement to the above technical solution, two side support plates are fixed on the crossbeam for rotatably connecting with the two end shafts of the first guide roller. The outer side adsorption structure includes an outer magnetic rod and two clamping arms fixed on the corresponding side support plates, with the two clamping arms clamping the outer magnetic rod together.

[0012] As a further improvement to the above technical solution, a clamping device is provided between the traction device and the thickness gauge.

[0013] As a further improvement to the above technical solution, a guide roller structure is provided between the defect detector and the metal particle adsorption device.

[0014] As a further improvement to the above technical solution, a hanger is provided above the metal particle adsorption device, and the hanger is equipped with a correction mechanism.

[0015] The beneficial effects of the present invention are as follows: Compared with the prior art, the thin film quality inspection transition mechanism provided by the present invention mainly improves the metal particle adsorption device. By driving the inner magnetic rod to move laterally through the linear guide pair, the film covering is cleverly removed, which makes it easy for the staff to quickly clean the inner magnetic rod, greatly reducing the difficulty of operation and reducing the impact on the production cycle. Attached Figure Description

[0016] Figure 1 This is a three-dimensional view of the membrane quality inspection transition facility.

[0017] Figure 2 This is a three-dimensional view of a metal particle adsorption device.

[0018] Figure 3 This is a three-dimensional view of a metal particle adsorption device.

[0019] Figure 4 This is a top view of the device for adsorbing metal particles on a thin film surface. The arrows in the figure indicate the movable direction of the guide rail.

[0020] Figure 5 This is a schematic diagram of how inner and outer magnetic rods adsorb onto both sides of a thin film in the prior art.

[0021] Key component symbols: 1-Frame, 2-Traction device, 3-Thickness gauge, 4-Defect detector, 5-Metal particle adsorption device, 51-Crossbeam, 52-Inner side adsorption structure, 521-Slider, 522-Guide rail, 5221-Mounting hole, 523-Support arm, 5231-Elongated hole, 5232-Through hole, 5233-Second threaded hole, 524-Inner magnetic rod, 5251-"Concave" shaped seat, 5252 - Adjusting screw, 5253 Locking screw, 526 Push-pull handle, 53 First guide roller, 54 Outer side adsorption structure, 541 Outer magnetic rod, 542 Clamping arm, 55 Side support plate, 6 Clamping device, 7 Guide roller structure, 71 Second guide roller, 72 Third guide roller, 81 Hanger, 82 Correction mechanism, 821 Fourth guide roller, 822 Correction swing frame, 823 Correction drive mechanism, 10 Film. Detailed Implementation

[0022] This invention provides a thin-film quality inspection transition mechanism. To make the objectives, technical solutions, and effects of this invention clearer and more explicit, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only for explaining the invention and are not intended to limit the scope of protection of the invention.

[0023] Please see Figures 1-4This invention provides a thin film quality inspection transition mechanism, comprising a frame 1, a traction device 2, a thickness gauge 3, a defect detector 4, and a metal particle adsorption device 5 arranged sequentially on the frame 1. The metal particle adsorption device 5 includes a crossbeam 51 fixed on the frame 1, an inner side adsorption structure 52 disposed above the crossbeam 51, a first guide roller 53 disposed in front of the crossbeam 51, and an outer side adsorption structure 54. The first guide roller 53 is used to guide the thin film 10 through the side adsorption structure and the outer side adsorption structure 54. The outer side adsorption structure 54 is used to adsorb metal particles on the outer side surface of the thin film 10. The inner side adsorption structure 52 includes a slider 521 fixed on the crossbeam 51 and a guide rail 522 slidably connected to the slider 521. The guide rail 522 extends laterally and can move laterally relative to the slider 521. The guide rail 522 is provided with two support arms 523, which together support a laterally extending inner magnetic rod 524. The inner magnetic rod 524 is used to adsorb metal particles on the inner side surface of the thin film 10.

[0024] During operation, the traction device 2 pulls the film 10 (lithium battery separator) from front to back. First, the thickness of the film 10 is measured by the thickness gauge 3 to check if the thickness is qualified. Then, the defect detector 4 accurately and reliably detects defects in the product, helping to eliminate problematic products and ensuring that only qualified products are rolled up and shipped. Subsequently, the film 10 passes through the metal particle adsorption device 5. The inner side adsorption structure 52 and the outer side adsorption structure 54 adsorb metal particles on the inner and outer sides of the film 10. The width extension direction of the film 10 is the same as the length extension of the inner magnetic rod 524. The length of the inner magnetic rod 524 is longer than or equal to the width of the film 10. The inner magnetic rod 524 is set close to the end face of the film 10. When the film 10 is conveyed past the inner magnetic rod 524, the inner magnetic rod 524 will adsorb the metal particles on the inner side of the film 10, ensuring that there are no metal particles on the surface of the film 10 and meeting the usage requirements.

[0025] It should be noted that the slider 521 and the guide rail 522 combine to form a linear guide pair, with the slider 521 fixed to the bracket by fixing screws. Linear guide pairs are mature in structure, reliable in motion, and inexpensive, readily available from the market. The design of a linear guide pair is based on the principle of rolling contact, typically consisting of a guide rail 522 and a slider 521. The guide rail 522 has a series of parallel-arranged balls or rollers, while the slider 521 has a corresponding number and size of raceways embedded inside, allowing the balls or rollers to roll within it. This structure provides high rigidity and weight-bearing capacity while reducing friction and preventing jamming, thus allowing the guide rail 522 to slide smoothly when pulled or pushed. To provide stable and reliable support for the inner magnetic rod 524 during operation, the slider 521 is positioned directly opposite the center of the film 10, i.e., the slider 521 is located in the middle of the guide rail 522, achieving weight balance on both sides of the guide rail 522.

[0026] When metallic impurities accumulate on the surface of the inner magnetic rod 524, weakening its magnetic force and requiring periodic cleaning, the operator first pulls one end of the guide rail 522 laterally, causing the guide rail 522 and the inner magnetic rod 524 to move together to one side. Half of the inner magnetic rod 524 moves out of the cover of the film 10, allowing the operator to directly clean the displaced portion. After cleaning, the inner magnetic rod 524 is pushed back into place. Similarly, the operator first pulls the other end of the guide rail 522 laterally, causing the guide rail 522 and the inner magnetic rod 524 to move together to the other side, displaceing the other half of the inner magnetic rod 524 out of the cover of the film 10. The operator can then directly clean the displaced portion. After cleaning, the inner magnetic rod 524 is pushed back into place. This allows for quick and unobstructed cleaning of the entire inner magnetic rod 524, making it highly practical.

[0027] When metallic impurities accumulate on the surface of the outer magnetic rod 541 of the outer adsorption structure 54, weakening the magnetic force and requiring cleaning of the outer magnetic rod 541, since the film does not block the outer magnetic rod 541, the staff only needs to stand in front of the outer magnetic rod 541 to easily clean it.

[0028] Compared with the prior art, the thin film quality inspection transition mechanism provided by the present invention mainly improves the metal particle adsorption device 5. The inner magnetic rod 524 is moved laterally by the linear guide pair, which cleverly removes the cover of the thin film 10, making it easier for the staff to quickly clean the inner magnetic rod 524, greatly reducing the difficulty of operation and reducing the impact on the production cycle.

[0029] Specifically, the guide rail 522 is provided with a concave seat 5251 that mates with the support arm 523. One end of the support arm 523 is embedded in the concave seat 5251 and has an elongated hole 5231 extending along the length of the support arm 523. The concave seat 5251 has a first threaded hole corresponding to the elongated hole 5231. The support arm 523 is connected to the concave seat 5251 by adjusting the screw 5252, which mates with the elongated hole 5231 and the first threaded hole. With this arrangement, the support arm 523 can be positioned by being embedded in the concave seat, ensuring that the support arm 523 is perpendicular to the film 10, and thus ensuring that the inner magnetic rod 524 is parallel to the film 10. Loosening the adjusting screw 5252 allows you to adjust the distance between the inner magnetic rod 524 and the film 10, better adjusting the position of the inner magnetic rod 524 according to the actual conveying trajectory of the film 10, ensuring the best adsorption effect. After adjustment, simply lock the adjusting screw 5252 again.

[0030] Furthermore, the other end of the support arm 523 forms a clamping block, and the side of the clamping block is provided with a through hole 5232 for the inner magnetic rod 524 to pass through, and a second threaded hole 5233 communicating with the through hole 5232. A locking screw 5253 for locking the inner magnetic rod 524 is fitted at the second threaded hole 5233.

[0031] Preferably, both ends of the guide rail 522 are provided with push-pull handles 526, which make it easy for operators to apply force to drive the guide rail 522 by holding the push-pull handles 526. In fact, since the guide rail 522 has multiple spaced mounting holes 5221 pre-set, the push-pull handles 526 can be fixed by screws passing through the appropriate mounting holes 5221 and then by nuts. In addition, the push-pull handles 526 also have a limiting function to prevent the two ends of the guide rail 522 from disengaging from the sliders 521.

[0032] Specifically, two side support plates 55 are fixed on the crossbeam 51, respectively for rotatable connection with the two end shafts of the first guide roller 53. The outer surface adsorption structure 54 includes an outer magnetic rod 541 and two clamping arms 542 fixed on the corresponding side support plates 55. The two clamping arms 542 together clamp the outer magnetic rod 541. It can be understood that the outer magnetic rod 541 is fixed and cannot move relative to the crossbeam, with a simple structure and easy cleaning.

[0033] Preferably, a clamping device 6 is provided between the traction device 2 and the thickness gauge 3. The clamping device 6 can be understood as using clamping wheels to clamp the side of the film 10, thereby stabilizing the film 10, reducing the vibration of the film 10 at the thickness gauge 3 and the defect detector 4, and achieving better detection results.

[0034] Preferably, a guide roller structure 7 is provided between the defect detector 4 and the metal particle adsorption device 5. The guide roller structure 7 includes a second guide roller 71 and a third guide roller 72 located directly above the second guide roller 71. The second guide roller 71 and the third guide roller 72 are located upstream of the first guide roller 53. After the film 10 is guided and conveyed by the second guide roller 71 and the third guide roller 72, the film 10 is raised in height and then wrapped around the first guide roller 53. Subsequently, the film 10 is conveyed upward. The film 10 can pass between the outer adsorption structure 54 and the inner adsorption structure 52.

[0035] Preferably, a hanger 81 is provided above the metal particle adsorption device 5, and the hanger 81 is equipped with a correction mechanism 82. The correction mechanism 82 includes a fourth guide roller 821, a correction swing frame 822 disposed on the hanger 81, a sensor for sensing the position of the film 10, and a correction drive mechanism 823 for driving the correction swing frame 822 to swing left and right to achieve correction. The fourth guide roller 821 cooperates with the first guide roller 53 to guide the film 10 upward. After the film 10 passes around the fourth guide roller 821, it is laterally conveyed to the correction swing frame 822. When the sensor detects that the film 10 has deviated, the correction drive mechanism 823 drives the correction swing frame 822 to swing left and right to achieve correction, ensuring that the film is smoothly conveyed to the winding machine for winding.

[0036] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0037] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection, an electrical connection, or a connection that allows for communication; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0038] It is understood that those skilled in the art can make equivalent substitutions or changes to the technical solution and inventive concept of the present invention, and all such changes or substitutions should fall within the protection scope of the present invention.

Claims

1. A thin film quality inspection transition mechanism, characterized in that, The device includes a frame, a traction device, a thickness gauge, a defect detector, and a metal particle adsorption device arranged sequentially on the frame. The metal particle adsorption device includes a crossbeam fixed on the frame, an inner adsorption structure disposed above the crossbeam, a first guide roller disposed in front of the crossbeam, and an outer adsorption structure. The first guide roller is used to guide the film through the side adsorption structure and the outer adsorption structure. The outer adsorption structure is used to adsorb metal particles on the outer surface of the film. The inner adsorption structure includes a slider fixed on the crossbeam and a guide rail slidably connected to the slider. The guide rail extends laterally and can move laterally relative to the slider. The guide rail is provided with two support arms, which together support a laterally extending inner magnetic rod. The inner magnetic rod is used to adsorb metal particles on the inner surface of the film.

2. The thin film quality inspection transition mechanism according to claim 1, characterized in that, The guide rail is provided with a concave seat that cooperates with the support arm. One end of the support arm is embedded in the concave seat and has an elongated hole extending along the length of the support arm. The concave seat is provided with a first threaded hole corresponding to the elongated hole. The support arm is connected to the concave seat by adjusting the screw and cooperating with the elongated hole and the first threaded hole.

3. The thin film quality inspection transition mechanism according to claim 1, characterized in that, The other end of the support arm forms a clamping block, and the side of the clamping block is provided with a through hole for the inner magnetic rod to pass through, and a second threaded hole communicating with the through hole is provided, and a locking screw for locking the inner magnetic rod is fitted at the second threaded hole.

4. The thin film quality inspection transition mechanism according to claim 1, characterized in that, Both ends of the guide rail are equipped with push-pull handles.

5. The thin film quality inspection transition mechanism according to claim 1, characterized in that, Two side support plates are fixed on the crossbeam for rotatably connecting to the two end shafts of the first guide roller. The outer side adsorption structure includes an outer magnetic rod and two clamping arms fixed on the corresponding side support plates. The two clamping arms together clamp the outer magnetic rod.

6. The thin film quality inspection transition mechanism according to claim 1, characterized in that, A clamping device is provided between the traction device and the thickness gauge.

7. The thin film quality inspection transition mechanism according to claim 1, characterized in that, A guide roller structure is provided between the defect detector and the metal particle adsorption device.

8. The thin film quality inspection transition mechanism according to claim 1, characterized in that, A hanger is provided above the metal particle adsorption device, and the hanger is equipped with a correction mechanism.

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