Electrolytic copper foil quality detection device and detection method

Abstract

The invention discloses an electrolytic copper foil quality detection device and method, the device comprises two oppositely arranged first sliding plates and two oppositely arranged second sliding plates, the first sliding plates are located between the two second sliding plates, the length direction of the first sliding plates is perpendicular to the length direction of the second sliding plates, and the length direction of the second sliding plates is perpendicular to the length direction of the first sliding plates. The two first sliding plates can move left and right to get close to or away from each other, and the two second sliding plates can move front and back to get close to or away from each other. According to the quality detection device and method for the electrolytic copper foil, the detection precision is improved.

Description

Technical Field

[0001] This invention relates to the field of copper foil testing equipment technology, and more specifically, to a quality testing device and method for electrolytic copper foil. Background Technology

[0002] Electrolytic copper foil, a key material in the electronics and information industry, is widely used in lithium-ion batteries, printed circuit boards, and other fields, and its quality directly affects the performance of end products. Perforation defects are a common quality problem in the production process of electrolytic copper foil. Even tiny perforations can lead to serious hidden dangers such as battery short circuits and circuit board leakage. Therefore, strict perforation testing of electrolytic copper foil is necessary.

[0003] Existing perforation detection devices for electrolytic copper foil mainly employ methods such as air pressure leakage detection, ultrasonic detection, or visual inspection. Among these, air pressure leakage detection is widely used due to its simplicity and low cost. Its principle involves sealing the copper foil and filling it with air pressure; the presence of a perforation is determined by detecting changes in air pressure or bubbles formed by leaking airflow. However, for small perforations, existing air pressure detection devices often suffer from insufficient accuracy because leaking airflow tends to become trapped within the perforation, making it difficult to quickly form detectable bubbles. Summary of the Invention

[0004] The purpose of this invention is to overcome the shortcomings of the prior art and provide a quality testing device and method for electrolytic copper foil, thereby improving the testing accuracy.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a quality inspection device for electrolytic copper foil, comprising two opposing first sliding plates and two opposing second sliding plates, the first sliding plates being located between the two second sliding plates, the length direction of the first sliding plates being perpendicular to the length direction of the second sliding plates, the two first sliding plates being able to move left and right to move closer or further away from each other, and the two second sliding plates being able to move back and forth to move closer or further away from each other; comprising a second movable seat, the second movable seat being located above the first sliding plates and the second sliding plates, the second movable seat being able to move up and down, the first sliding plate being provided with a first groove, the bottom wall of the first groove and the upper end surface of the second sliding plate being used to place copper foil sheets, the bottom surface of the second movable seat being able to move downward to press the outer upper end of the copper foil sheet, a second cavity being formed between the second movable seat and the upper end surface of the copper foil sheet, the second cavity being connected to an air inlet device, the lower end surface of the copper foil sheet being immersed in water; comprising a camera, the camera being located below the copper foil sheet.

[0006] The invention is further configured such that the first slide plate is provided with a second groove, the second groove is connected to the first groove, the second groove is located on the side of the second groove away from the other first slide plate, the copper foil is inserted into the second groove on both sides, and the height of the second groove is the same as the thickness of the copper foil.

[0007] The invention is further configured such that the second movable seat includes a second frame located at the bottom, the second frame including an extension frame located at the bottom, the extension frame having a rectangular frame structure, and the bottom of the extension frame abutting against the upper end of the copper foil sheet.

[0008] The invention is further configured such that a first sealing gasket is installed at the bottom of the extension frame.

[0009] The invention is further configured such that two first sliding plates are located at both ends of the copper foil sheet in the width direction, the bottom wall of the first groove is arc-shaped, and the bottom wall of the first groove gradually decreases in position along the direction close to the other first sliding plate. In the initial state, the maximum distance between the two second grooves is less than the width of the copper foil sheet, so that the copper foil sheet between the second grooves arches downward.

[0010] The present invention is further configured to include a first movable seat, which is capable of moving up and down, and a second movable seat is slidably connected to the inner wall of the first movable seat.

[0011] The present invention is further configured such that the second movable seat includes a first frame located above the second frame, the first frame includes a wall at the bottom, a sealing plate is sealed on the wall, a first cavity is formed between the upper end surface of the sealing plate and the second movable seat, the second cavity is located below the sealing plate, the sealing plate is provided with a through hole, the two ends of the through hole are connected to the first cavity and the second cavity, and the invention also includes a movable block, which can open or close the through hole.

[0012] The invention is further configured such that the second movable seat is equipped with a connector, the connector is connected to the first cavity, and the connector is externally connected to an air intake device.

[0013] The present invention also adopts the following technical solution: a method for quality inspection of electrolytic copper foil, using a quality inspection device for electrolytic copper foil, comprising the following steps:

[0014] ① Insert both ends of the copper foil into the second groove, causing the copper foil to arch downwards;

[0015] ②The second movable seat moves downward to compact the copper foil sheet;

[0016] ③ The second chamber is pressurized, and at the same time the first moving seat moves downward so that the bottom surface of the copper foil contacts the water surface;

[0017] ④ The first movable seat moves upward to separate the bottom surface of the copper foil from the water surface, and the second sliding plates on both sides move away from each other to separate from the copper foil;

[0018] ⑤ The two first sliding plates move closer to each other, increasing the downward arching of the copper foil.

[0019] In summary, the present invention has the following beneficial effects:

[0020] The copper foil sheet is lifted upwards and removed from the water tank. At the same time, the first sliding plates on both sides squeeze the copper foil sheet together. Since the copper foil sheet is initially arched downwards, the degree of downward arching of the copper foil sheet increases. The upper surface of the copper foil sheet is squeezed inwards, and the lower surface of the copper foil sheet is stretched outwards to squeeze out the airflow trapped in the perforation. Although the lower surface of the copper foil sheet is removed from the water surface, a water film is still formed. The airflow is squeezed out to form bubbles, which are captured by the camera to detect quality problems. Attached Figure Description

[0021] Figure 1 This is a diagram showing the positional relationship between the first and second sliding plates in the embodiment.

[0022] Figure 2 This is a schematic diagram of the structure of an embodiment;

[0023] Figure 3 for Figure 2 Enlarged view of point A in the middle;

[0024] Figure 4 This is a diagram of the driving structure of the second slide block in the embodiment;

[0025] Figure 5 This is a top view of the copper foil sheet and the first sealing gasket in the embodiment;

[0026] Figure 6 The state of the copper foil in the embodiment Figure 1 ;

[0027] Figure 7 This is another positional relationship diagram between the first and second sliding plates in the embodiment;

[0028] Figure 8 The state of the copper foil in the embodiment Figure 2 .

[0029] Reference numerals: First movable seat 1, First side plate 11, First support plate 111, Second side plate 12, Second support plate 121, Groove 122, First driving component 13, Guide column 2, Lifting seat 21, Fixed plate 211, Camera 212, Transmission mechanism 22, Transmission chain 221, Second movable seat 3, First frame 31, Wall surface 311, Second frame 32, Extension frame 321, First sealing gasket 322, Second driving component 33, Moving block 34, Connector 35, First sliding plate 4, First groove 41, Second groove 42, Third driving component 43, Second sliding plate 5, Fourth driving component 51, Sealing plate 6, Through hole 61, Second sealing gasket 62, First cavity 7, Second cavity 8, Copper foil sheet 9. Detailed Implementation

[0030] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0031] like Figures 1-8 As shown, this embodiment discloses a quality inspection device for electrolytic copper foil, including two opposing first sliding plates 4 and two opposing second sliding plates 5. Both the first sliding plates 4 and the second sliding plates 5 are elongated structures. The first sliding plate 4 is located between the two second sliding plates 5, and the length direction of the first sliding plate 4 is perpendicular to the length direction of the second sliding plates 5. The two first sliding plates 4 can move left and right to move closer or further apart, and the two second sliding plates 5 can move back and forth to move closer or further apart. Specifically, as... Figure 2 , Figure 3 As shown, it also includes a first movable base 1, which has a rectangular structure. The first movable base 1 includes two oppositely arranged first side plates 11 and two oppositely arranged second side plates 12. A first support plate 111 is mounted on the first side plate 11, and the upper end surface of the first support plate 111 is slidably connected to the bottom of the first slide plate 4. A third driving component 43 is mounted on the first movable base 1. The third driving component 43 is a cylinder, and the output end of the third driving component 43 passes through the first side plate 11 and is fixedly connected to the first slide plate 4, so that the first slide plate 4 can move left and right. Similarly, as Figure 4 As shown, a second support plate 121 is mounted on the second side plate 12. The upper end face of the second support plate 121 is slidably connected to the second slide plate 5. The second slide plate 5 is driven by a fourth driving component 51 to move back and forth. The fourth driving component 51 is a cylinder. Figure 4 As shown, the second side plate 12 is provided with a groove 122, and the copper foil 9 is placed into the first movable seat 1 in the direction of the arrow in the figure.

[0032] like Figure 1 As shown, in the initial state, the two ends of the first slide plate 4 along its length abut against the two sides of the second slide plate 5. Figure 2 , Figure 3As shown, the first slide plate 4 has a first groove 41 and a second groove 42. The first groove 41 is located on the side of the first slide plate 4 closest to the other first slide plate 4, and the second groove 42 communicates with the first groove 41. The bottom wall of the first groove 41 and the upper end of the second slide plate 5 are used to place copper foil sheets 9. The two first slide plates 4 are located at both ends of the copper foil sheets 9 in the width direction. The bottom wall of the first groove 41 is arc-shaped, and the bottom wall of the first groove 41 gradually decreases in position along the direction closest to the other first slide plate 4. The copper foil sheets 9 are inserted into the second grooves 42 on both sides, and the height of the second grooves 42 is the same as the thickness of the copper foil sheets 9. In the initial state, the maximum distance between the two second grooves 42 is less than the width of the copper foil sheets 9, so that the copper foil sheets 9 between the second grooves 42 arch downwards.

[0033] like Figure 2 As shown, the system includes a first movable seat 1, which is capable of moving up and down. A second movable seat 3 is slidably connected to the inner wall of the first movable seat 1. Specifically, lifting seats 21 are fixedly connected to both sides of the first movable seat 1. Guide columns 2 are slidably connected to the lifting seats 21. The lifting seats 21 are fixedly connected to a transmission chain 221, which is driven by a transmission mechanism 22 to move the lifting seats 21 up and down. A first driving component 13, which is a cylinder, is installed on the first movable seat 1. The output end of the first driving component 13 extends into the first movable seat 1 and is fixedly connected to the second movable seat 3. The second movable seat 3 is located above the first sliding plate 4 and the second sliding plate 5. Driven by the first driving component 13, the second movable seat 3 can move up and down.

[0034] The bottom surface of the second movable base 3 can move downwards to press against the upper outer edge of the copper foil sheet 9. Specifically, the second movable base 3 includes a second frame 32 located at the bottom, and the second frame 32 includes an extension frame 321 located at the bottom. The extension frame 321 has a rectangular frame structure, and the bottom of the extension frame 321 abuts against the upper end of the copper foil sheet 9. A first sealing gasket 322 is installed at the bottom of the extension frame 321, such as... Figure 5 As shown, the first sealing gasket 322 is distributed along the outer edge of the copper foil 9 for compression sealing.

[0035] The second movable base 3 includes a first frame 31 located above the second frame 32. The first frame 31 includes a wall 311 at the bottom, and a sealing plate 6 is sealed to the wall 311 by a second sealing gasket 62. A first cavity 7 is formed between the upper end of the sealing plate 6 and the second movable base 3. A second cavity 8 is located below the sealing plate 6. The sealing plate 6 has a through hole 61, and the two ends of the through hole 61 connect to the first cavity 7 and the second cavity 8. It also includes a movable block 34. A second driving component 33 is connected to the top of the movable block 34. The second driving component 33 drives the movable block 34 to move up and down, so that the movable block 34 can open or close the through hole 61. The second movable base 3 is equipped with a connector 35, which connects to the first cavity 7 and is externally connected to an air intake device.

[0036] A second cavity 8 is formed between the second movable seat 3 and the upper end face of the copper foil sheet 9. The lower end face of the copper foil sheet 9 is immersed in water. Since the second cavity 8 will release pressure during use to maintain sufficient air pressure in the first cavity 7, the first cavity 7 and the second cavity 8 are separated by the movable block 34, so that the second cavity 8 can be pressurized quickly when the through hole 61 is opened, thereby improving efficiency.

[0037] like Figure 2 As shown, a fixed plate 211 is fixedly installed at the bottom of the lifting seat 21, and a camera 212 is fixedly installed on the fixed plate 211. The camera 212 is located below the copper foil 9. When the copper foil 9 has a perforation, when the airflow at the upper end of the copper foil 9 passes through the perforation and enters the water below the copper foil 9 to form bubbles, the camera 212 can capture them to detect the quality problem.

[0038] When the air pressure at the upper end of the copper foil 9 is insufficient, or the perforation is very small, the airflow is trapped inside the perforation and does not immediately flow downwards, forming air bubbles. At this time, the copper foil 9 is lifted upwards and removed from the water tank. Figure 1 , Figure 8 As shown, the first sliding plates 4 on both sides simultaneously approach each other and squeeze the copper foil 9. Since the copper foil 9 is initially in a downward arched state, the degree of downward arching of the copper foil 9 increases. The upper surface of the copper foil 9 is squeezed inward, and the lower surface of the copper foil 9 is stretched outward to squeeze out the airflow trapped in the perforation. Although the lower surface of the copper foil 9 leaves the water surface, a water film is still formed. The airflow is squeezed out to form bubbles, which are captured by the camera 212 to detect its quality problem.

[0039] A method for quality inspection of electrolytic copper foil, using the aforementioned quality inspection device for electrolytic copper foil, includes the following steps:

[0040] ①For example Figure 2 As shown, both the first movable seat 1 and the second movable seat 3 are at their upper limit positions, combined with Figure 2 , Figure 4 The copper foil 9 is placed into the groove 122, and both ends of the copper foil 9 are inserted into the second groove 42, causing the copper foil 9 to arch downwards.

[0041] ② The second movable seat 3 moves downward so that the extension frame 321 presses the copper foil 9 against the bottom wall of the first groove 41 and the upper end of the second slide plate 5.

[0042] ③ The through hole 61 is opened, the second cavity 8 is pressurized, and at the same time the first moving seat 1 moves downward so that the bottom surface of the copper foil 9 contacts the water surface.

[0043] ④ The first movable seat 1 moves upward to separate the bottom surface of the copper foil 9 from the water surface, such as... Figure 7 As shown, the two second sliding plates 5 on both sides are moved away from each other to separate from the copper foil sheet 9.

[0044] ⑤ The two first slide plates 4 approach each other, increasing the downward arching of the copper foil 9. The upper surface of the copper foil 9 is squeezed inward, and the lower surface of the copper foil 9 is stretched outward to squeeze out the airflow trapped in the perforation. Although the lower surface of the copper foil 9 leaves the water surface, a water film is still formed. The airflow is squeezed out to form bubbles, which are captured by the camera 212 to detect its quality problem.

[0045] The above description is merely a preferred embodiment of the present invention. The scope of protection of the present invention is not limited to the above embodiments. All technical solutions falling within the scope of the present invention's concept are within the scope of protection of the present invention. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principles of the present invention should also be considered within the scope of protection of the present invention.

Claims

1. A quality inspection device for electrolytic copper foil, characterized in that, It includes two first skateboards (4) arranged opposite each other and two second skateboards (5) arranged opposite each other. The first skateboards (4) are located between the two second skateboards (5). The length direction of the first skateboards (4) is perpendicular to the length direction of the second skateboards (5). The two first skateboards (4) can move left and right to move closer or further away from each other, and the two second skateboards (5) can move back and forth to move closer or further away from each other. Includes a second movable seat (3), which is located above the first sliding plate (4) and the second sliding plate (5). The second movable seat (3) can move up and down. The first sliding plate (4) is provided with a first groove (41). The bottom wall of the first groove (41) and the upper end of the second sliding plate (5) are used to place a copper foil sheet (9). The bottom surface of the second movable seat (3) can move downward to press the upper outer edge of the copper foil sheet (9). A second cavity (8) is formed between the second movable seat (3) and the upper end of the copper foil sheet (9). The second cavity (8) is connected to an air intake device. The lower end of the copper foil sheet (9) is immersed in water. Includes a camera (212) located below the copper foil (9).

2. The quality inspection device for electrolytic copper foil according to claim 1, characterized in that, The first slide plate (4) is provided with a second groove (42), which is connected to the first groove (41). The second groove (42) is located on the side of the second groove (42) away from the other first slide plate (4). The copper foil (9) is inserted into the second groove (42) on both sides. The height of the second groove (42) is the same as the thickness of the copper foil (9).

3. The quality inspection device for electrolytic copper foil according to claim 1, characterized in that, The second movable seat (3) includes a second frame (32) located at the bottom, the second frame (32) includes an extension frame (321) located at the bottom, the extension frame (321) is a rectangular frame structure, and the bottom of the extension frame (321) abuts against the upper end of the copper foil (9).

4. The quality inspection device for electrolytic copper foil according to claim 3, characterized in that, The bottom of the extension frame (321) is fitted with a first sealing gasket (322).

5. The quality inspection device for electrolytic copper foil according to claim 2, characterized in that, The two first sliding plates (4) are located at both ends of the copper foil (9) in the width direction. The bottom wall of the first groove (41) is arc-shaped, and the bottom wall of the first groove (41) gradually decreases in position along the direction close to the other first sliding plate (4). In the initial state, the maximum distance between the two second grooves (42) is less than the width of the copper foil (9), so that the copper foil (9) between the second grooves (42) arches downward.

6. The quality inspection device for electrolytic copper foil according to claim 1, characterized in that, It includes a first movable seat (1), which is capable of moving up and down, and a second movable seat (3) is slidably connected to the inner wall of the first movable seat (1).

7. The quality inspection device for electrolytic copper foil according to claim 3, characterized in that, The second movable seat (3) includes a first frame (31) located above the second frame (32). The first frame (31) includes a wall (311) located at the bottom. A sealing plate (6) is sealed on the wall (311). A first cavity (7) is formed between the upper end face of the sealing plate (6) and the second movable seat (3). The second cavity (8) is located below the sealing plate (6). The sealing plate (6) is provided with a through hole (61). The two ends of the through hole (61) are connected to the first cavity (7) and the second cavity (8). The second movable seat (3) also includes a movable block (34) which can open or close the through hole (61).

8. The quality inspection device for electrolytic copper foil according to claim 7, characterized in that, The second movable seat (3) is equipped with a connector (35), which is connected to the first cavity (7) and externally connected to the air intake device.

9. A method for quality inspection of electrolytic copper foil, using the quality inspection device for electrolytic copper foil according to any one of claims 1-8, characterized in that, Includes the following steps: ① Insert both ends of the copper foil (9) into the second groove (42), and the copper foil (9) arches downward; ② The second movable seat (3) moves downward to press the copper foil sheet (9); ③ The second cavity (8) is pressurized, and at the same time the first moving seat (1) moves downward so that the bottom surface of the copper foil (9) contacts the water surface; ④ The first movable seat (1) moves upward to separate the bottom surface of the copper foil (9) from the water surface, and the second sliding plates (5) on both sides move away from each other to separate from the copper foil (9); ⑤ The two first sliding plates (4) move closer to each other, increasing the downward arching of the copper foil (9).

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