Copper foil quality detection device for copper foil cutting machine

Abstract

The utility model discloses a copper foil quality detection device for a copper foil cutting machine, which comprises a cutting mechanism, a front side detection mechanism and a back side detection mechanism, the cutting mechanism comprises a rack, and the rack is provided with an unwinding roller, a winding roller, a cutter and a driving assembly for driving the cutter to move; the front face detection mechanism comprises a first light source and a first camera which are arranged on the rack, the first light source is used for irradiating the front face of the copper foil, and the first camera is used for collecting front face reflection images of the copper foil; the first light source is used for irradiating the front surface of the copper foil, the first camera is used for collecting reflection images of the front surface of the copper foil, the back surface detection mechanism comprises a second light source and a second camera which are arranged on the rack, the second light source is used for irradiating the back surface of the copper foil, and the second camera is used for collecting the reflection images of the front surface of the copper foil. The second light source irradiates the back face of the copper foil, and the second camera collects transmission images of the front face of the copper foil.

Description

TECHNICAL FIELD

[0001] The utility model relates to copper foil production field, concretely relates to a copper foil quality detection device for copper foil cutting machine. BACKGROUND

[0002] Lithium battery is a kind of battery by lithium metal or lithium alloy as negative electrode material, using non-aqueous solution.Lithium battery copper foil is the key material of lithium battery negative electrode, is the carrier of negative active material in lithium ion battery, is also negative electrode electron collector and conductor.Main function is to gather the current generated by battery active material, to generate greater current.The manufacturing process of electrolytic copper foil mainly has four processes, including copper dissolving, foil, post-processing and slitting process.The slitting process refers to cutting machine according to the requirement, the copper foil produced is cut into the width prepared, and then reeled and packed.It is necessary to do the last quality detection before reeling and packing, detects whether there is hole on the copper foil or not.

[0003] In the related art, a kind of copper foil defect detection machine is presented, including operation table, the two sides of the operation table are respectively provided with material collecting device and feeding device, camera light source detection mechanism, code spraying mechanism and material guiding mechanism are sequentially provided on the operation table along the copper foil conveying direction, the camera light source detection mechanism includes the door type frame across the top of copper foil, the transverse portion of the door type frame is equipped with multiple cameras, multiple cameras are evenly arranged along the length direction of transverse portion, multiple the camera below is equipped with a same plane light source, multiple through holes are formed in the plane light source, the through hole is set one by one with the camera.

[0004] For the related art in the above, there are the following defects: pinhole shape on copper foil is not one, some are large at top and small at bottom, some are small at top and large at bottom, plane light source only irradiates copper foil from the top of copper foil, light projection is not complete, detection precision is lower. INVENTION CONTENTS

[0005] The utility model aims at overcoming the above technical insufficiency, proposes a kind of copper foil quality detection device for copper foil cutting machine, solves the technical problem of lower single-side detection precision in prior art.

[0006] To achieve the above technical purpose, the technical scheme of the utility model provides a kind of copper foil quality detection device for copper foil cutting machine, including cutting mechanism, the cutting mechanism includes rack, the rack is equipped with unwinding roller, winding roller, cutting knife and the drive assembly for driving cutting knife to move;

[0007] Front detection mechanism, the front detection mechanism includes the first light source and the first camera on the rack, the first light source is used to irradiate the front of copper foil, and the first camera is used to collect the front reflection image of copper foil;And,

[0008] A reverse side inspection mechanism includes a second light source and a second camera mounted on a frame. The second light source is used to illuminate the reverse side of the copper foil, and the second camera is used to capture a transmitted image of the front side of the copper foil.

[0009] In some embodiments, both the first light source and the second light source are strip light sources, and the width of both the first light source and the second light source is greater than the width of the copper foil.

[0010] In some embodiments, two rotating frames are rotatably connected to the frame, the first light source and the second light source are respectively disposed on the two rotating frames, and the frame is provided with an adjustment component for adjusting the angle of the rotating frames.

[0011] In some embodiments, the adjustment assembly includes a slot, a toothed block, and a gear. The slot is disposed on the frame, the toothed block is engaged in the slot, and the gear is disposed at the end of the rotating frame and meshes with the toothed block.

[0012] In some embodiments, the gear is provided with a handle.

[0013] In some embodiments, the frame is provided with a detection roller, which is located between the unwinding roller and the rewinding roller and abuts against the copper foil.

[0014] In some embodiments, the rack is provided with a dust removal assembly for cleaning copper foil.

[0015] In some embodiments, the dust removal assembly includes a fan, a duct, and a nozzle, wherein the outlet of the fan is connected to the inlet of the duct, the outlet of the duct is connected to the inlet of the nozzle, and the outlet of the nozzle faces the copper foil.

[0016] In some embodiments, there are two nozzles, each facing one side of the copper foil.

[0017] In some embodiments, a filter screen is provided at the outlet of the nozzle.

[0018] Compared with the prior art, the beneficial effects of this utility model include: the first light source illuminates the front side of the copper foil, the first camera captures the reflected image of the front side of the copper foil, the second light source illuminates the back side of the copper foil, and the second camera captures the transmitted image of the front side of the copper foil. Through the coordinated work of the front detection mechanism and the back detection mechanism, comprehensive quality inspection of the front and back sides of the copper foil can be carried out, further improving the quality stability of the product. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of the quality testing device provided by this utility model;

[0020] Figure 2 This utility model providesFigure 1 Enlarged view of the local structure at point A;

[0021] Figure 3 This is a cross-sectional view of the overall structure of the dust removal component provided by this utility model.

[0022] Explanation of reference numerals in the attached figures:

[0023] 1. Cutting mechanism; 11. Frame; 12. Unwinding roller; 13. Rewinding roller; 14. Cutting knife; 2. Front detection mechanism; 21. First light source; 22. First camera; 3. Back detection mechanism; 31. Second light source; 32. Second camera; 4. Turning frame; 5. Adjustment assembly; 51. Slot; 52. Tooth block; 53. Gear; 54. Handle; 6. Detection roller; 7. Dust removal assembly; 71. Fan; 72. Air duct; 73. Nozzle; 74. Filter screen. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model 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 used to explain this utility model and are not intended to limit this utility model.

[0025] This utility model provides a copper foil quality inspection device for a copper foil cutting machine, the structure of which is as follows: Figure 1 - Figure 3 As shown, it includes a cutting mechanism 1, a front inspection mechanism 2, and a back inspection mechanism 3.

[0026] The cutting mechanism 1 includes a frame 11, on which an unwinding roller 12, a take-up roller 13, a cutting blade 14, and a drive assembly for driving the cutting blade 14 to move are provided. The drive assembly includes a cylinder mounted on the frame 11, and the piston rod of the cylinder is connected to the cutting blade 14.

[0027] The front detection mechanism 2 includes a first light source 21 and a first camera 22 mounted on a frame 11. The first light source 21 is used to illuminate the front of the copper foil, and the first camera 22 is used to capture the front reflection image of the copper foil.

[0028] The reverse side detection mechanism 3 includes a second light source 31 and a second camera 32 mounted on a frame 11. The second light source 31 is used to illuminate the reverse side of the copper foil, and the second camera 32 is used to capture a front-side transmitted image of the copper foil.

[0029] In operation, the unwinding roller 12 is mounted on the frame 11. Its function is to support the copper foil roll and gradually unwind it, providing a continuous supply of copper foil material for subsequent cutting and inspection processes. The cutter 14 is also mounted on the frame 11. When the copper foil is fed to the cutter 14 according to a predetermined length or size requirement, the cutter 14 performs a cutting action. After the cutter 14 completes the cutting, the cut copper foil sheet is conveyed to the take-up roller 13. This facilitates the sorting and collection of the cut copper foil, enabling subsequent packaging and transportation operations. The first light source 21 is mounted on the frame 11 and continuously emits light. When the light shines on the front of the copper foil, it is reflected. The first camera 22 is also mounted on the frame 11, with its lens aimed at the front of the copper foil, positioned to receive the reflected light from the front of the copper foil. When the first light source 21 illuminates the front side of the copper foil and produces reflected light, the first camera 22 captures this reflected light and converts it into an electrical signal based on information such as light intensity and color. The internal image processing circuit then further processes the electrical signal into a digital image signal, ultimately generating a reflected image of the front side of the copper foil. The second light source 31 is located on the frame 11 and illuminates the back side of the copper foil. Light passing through the copper foil produces a transmission phenomenon. The second camera 32 is mounted on the frame 11, with its lens aimed at the front side of the copper foil. When the second light source 31 illuminates the back side of the copper foil and produces transmitted light, the second camera 32 captures this transmitted light and, following a similar principle to the first camera 22, converts the transmitted light into an electrical signal. This signal is then processed into a digital image signal by the image processing circuit, thereby generating a transmitted image of the front side of the copper foil.

[0030] In this invention, the first light source 21 illuminates the front side of the copper foil, and the first camera 22 captures the reflected image of the front side of the copper foil. The second light source 31 illuminates the back side of the copper foil, and the second camera 32 captures the transmitted image of the front side of the copper foil. Through the coordinated work of the front detection mechanism 2 and the back detection mechanism 3, comprehensive quality inspection of the front and back sides of the copper foil can be carried out, further improving the quality stability of the product.

[0031] To improve the illumination effect of the first light source 21 and the second light source 31, please refer to... Figure 1 In a preferred embodiment, both the first light source 21 and the second light source 31 are strip light sources, and the width of both the first light source 21 and the second light source 31 is greater than the width of the copper foil.

[0032] In use, because the width of the strip light source is greater than the width of the copper foil, it can achieve complete coverage of the copper foil from one edge to the other when illuminating it. Both the leftmost and rightmost edges of the copper foil are evenly illuminated by the light emitted from the strip light source, avoiding any blind spots. This ensures that the entire surface of the copper foil receives sufficient and uniform illumination during the inspection process, laying the foundation for subsequent clear and accurate image acquisition by the camera.

[0033] To adjust the illumination angles of the first light source 21 and the second light source 31, please refer to... Figure 2 In a preferred embodiment, two rotating frames 4 are rotatably connected to the frame 11, and the first light source 21 and the second light source 31 are respectively disposed on the two rotating frames 4. The frame 11 is provided with an adjustment component 5 for adjusting the angle of the rotating frames 4.

[0034] In use, the first light source 21 and the second light source 31 are respectively mounted on two rotating frames 4, which are mounted on the frame 11 via a rotatable connection. This rotatable connection allows the rotating frames 4 to rotate around a certain axis, thereby changing the illumination angle of the light sources. When the adjustment component 5 is activated, the angles of the first light source 21 and the second light source 31 mounted on the rotating frames 4 change accordingly as the rotating frames 4 rotate. The operator can observe the effect of the light source illuminating the copper foil in real time, or combine the image quality feedback acquired by the camera to precisely adjust the angle of the light source. After the angle adjustment is completed, the angle of the rotating frames 4 is fixed by the adjustment component 5. In this way, during the copper foil cutting and inspection process, the first light source 21 and the second light source 31 can continuously and stably illuminate the copper foil at the set optimal angle. This ensures the consistency of lighting conditions throughout the inspection process, enabling the camera to acquire high-quality and stable images, thereby achieving accurate inspection of the copper foil quality.

[0035] To adjust the illumination angles of the first light source 21 and the second light source 31, please refer to... Figure 2 In a preferred embodiment, the adjustment component 5 includes a slot 51, a toothed block 52, and a gear 53. The slot 51 is disposed on the frame 11, the toothed block 52 is engaged in the slot 51, and the gear 53 is disposed at the end of the rotating frame 4 and meshes with the toothed block 52.

[0036] In use, when the angle of the rotating frame 4 needs to be adjusted, the gear 53 is rotated by external force. Once the rotating frame 4 has rotated to the desired angle, the external force driving the gear 53 is stopped. At this time, the meshing friction between the tooth block 52 and the gear 53, as well as the restraining effect of the slot 51 on the tooth block 52, keeps the rotating frame 4 at its current angular position. This effectively prevents the rotating frame 4 from changing its angle due to vibration or other external interference during operation, ensuring that the first light source 21 and the second light source 31 can illuminate the copper foil at a stable angle, providing stable lighting conditions for subsequent quality inspection.

[0037] For easier rotation of gear 53, please refer to... Figure 2 In a preferred embodiment, the gear 53 is provided with a handle 54.

[0038] During use, the presence of handle 54 allows the operator to more precisely control the rotation angle of gear 53. By combining tactile and visual observation, the operator can slowly and meticulously rotate handle 54 to make small adjustments to the rotation angle of gear 53, based on the illumination of the copper foil surface and the feedback effect of the image captured by the camera, thereby achieving fine adjustment of the angle of the rotating frame 4.

[0039] To improve detection results, please refer to Figure 1 In a preferred embodiment, the frame 11 is provided with a detection roller 6, which is located between the unwinding roller 12 and the rewinding roller 13, and the detection roller 6 abuts against the copper foil.

[0040] In use, the presence of the detection roller 6 helps the front detection mechanism 2 and the back detection mechanism 3 to better complete the detection of copper foil. Because the detection roller 6 keeps the copper foil stable and in a suitable position, the first light source 21 and the second light source 31 can more evenly and accurately illuminate the front and back sides of the copper foil. Correspondingly, the first camera 22 and the second camera 32 can also more stably and clearly acquire the front reflected image and the front transmitted image of the copper foil. Furthermore, the detection roller 6 can reduce vibration and shaking of the copper foil during transport, avoiding blurring and distortion in image acquisition caused by these unstable factors, further improving the accuracy and reliability of the detection mechanism in detecting the quality of the copper foil.

[0041] To improve the cleanliness of the copper foil, please refer to... Figure 3 In a preferred embodiment, the frame 11 is provided with a dust removal assembly 7 for cleaning copper foil.

[0042] During use, if dust or other impurities are present on the surface of the copper foil, they will affect the reflection and transmission of light under illumination, thus interfering with the image quality captured by the camera. After the dust removal component 7 cleans the surface of the copper foil, it ensures that the reflection and transmission of light when the first light source 21 and the second light source 31 illuminate the copper foil can accurately reflect the state of the copper foil itself. This makes the images captured by the first camera 22 and the second camera 32 more accurate and clear, which is beneficial for more precise detection of the true quality condition of the copper foil, such as whether there are scratches, holes, uneven thickness, or other problems.

[0043] To improve the cleanliness of the copper foil, please refer to... Figure 3 In a preferred embodiment, the dust removal assembly 7 includes a fan 71, a duct 72, and a nozzle 73. The outlet of the fan 71 is connected to the inlet of the duct 72, the outlet of the duct 72 is connected to the inlet of the nozzle 73, and the outlet of the nozzle 73 faces the copper foil.

[0044] In operation, the fan 71 is the power source for airflow in the entire dust removal assembly 7. The high-speed airflow exiting the fan 71 then enters the duct 72, which is connected to the fan 71 outlet. The duct 72 guides and transmits the airflow. The airflow transmitted through the duct 72 finally reaches the inlet of the nozzle 73, and then is ejected from the outlet of the nozzle 73, heading towards the copper foil surface. When the high-speed airflow impacts the copper foil surface, it directly impacts dust, debris, and other impurities on the copper foil surface, using its own kinetic energy to blow these impurities off the copper foil.

[0045] To improve the overall cleanliness of the copper foil, please refer to... Figure 3 In a preferred embodiment, there are two nozzles 73, which face opposite sides of the copper foil.

[0046] During use, the two nozzles 73 simultaneously spray air from both sides of the copper foil to remove dust. This ensures that both sides of the copper foil are effectively cleaned, preventing dust, debris, and other impurities from remaining on the other side due to dust removal on only one side. Complete coverage of both sides of the copper foil for dust removal more thoroughly removes impurities from the surface, ensuring the cleanliness of the copper foil in subsequent cutting and inspection processes, and contributing to improved quality throughout the entire copper foil processing.

[0047] To reduce the possibility of dust entering the air nozzle 73, please refer to... Figure 3 In a preferred embodiment, a filter screen 74 is provided at the outlet of the nozzle 73.

[0048] During use, the filter screen prevents larger particles of impurities from entering the nozzle 73. If these impurities do enter the nozzle 73, they may flow with the airflow inside the duct 72 and nozzle 73, causing blockages. When the duct 72 or nozzle 73 is blocked, it will affect the normal transmission and spraying of airflow, reduce dust removal efficiency, and may even damage equipment such as the fan 71.

[0049] To better understand this utility model, the following is combined with... Figure 1 - Figure 3The working principle of a copper foil quality inspection device for a copper foil cutting machine is described in detail below: The unwinding roller 12 is mounted on the frame 11, and its function is to carry the copper foil roll and gradually unwind it, providing continuous copper foil material for subsequent cutting and inspection processes. The cutting blade 14 is also mounted on the frame 11. When the copper foil is conveyed to the cutting blade 14 according to a predetermined length or size requirement, the cutting blade 14 performs a cutting action. After the cutting blade 14 completes the cutting, the cut copper foil sheet is conveyed to the take-up roller 13. This facilitates the sorting and collection of the cut copper foil, enabling subsequent packaging, transportation, and other operations. A first light source 21 is mounted on the frame 11 and continuously emits light. When the light shines on the front side of the copper foil, it is reflected. A first camera 22 is also mounted on the frame 11, with its lens aimed at the front side of the copper foil, positioned to receive the reflected light from the front side of the copper foil. When the first light source 21 illuminates the front side of the copper foil and produces reflected light, the first camera 22 captures this reflected light and converts it into an electrical signal based on information such as light intensity and color. The internal image processing circuit then further processes the electrical signal into a digital image signal, ultimately generating a reflected image of the front side of the copper foil. The second light source 31 is located on the frame 11 and illuminates the back side of the copper foil. Light passing through the copper foil produces a transmission phenomenon. The second camera 32 is mounted on the frame 11, with its lens aimed at the front side of the copper foil. When the second light source 31 illuminates the back side of the copper foil and produces transmitted light, the second camera 32 captures this transmitted light and, following a similar principle to the first camera 22, converts the transmitted light into an electrical signal. This signal is then processed into a digital image signal by the image processing circuit, thereby generating a transmitted image of the front side of the copper foil.

[0050] The specific embodiments of this utility model described above do not constitute a limitation on the scope of protection of this utility model. Any other corresponding changes and modifications made based on the technical concept of this utility model should be included within the scope of protection of the claims of this utility model.

Claims

1. A copper foil quality inspection device for a copper foil cutting machine, characterized in that, include: A cutting mechanism, comprising a frame on which an unwinding roller, a take-up roller, a cutting blade, and a drive assembly for driving the cutting blade to move are mounted; A front detection mechanism, comprising a first light source and a first camera mounted on a frame, wherein the first light source is used to illuminate the front of the copper foil, and the first camera is used to capture the reflected image of the front of the copper foil; A reverse side inspection mechanism, comprising a second light source and a second camera mounted on a frame, wherein the second light source is used to illuminate the reverse side of the copper foil, and the second camera is used to capture a transmitted image of the front side of the copper foil; Two rotating frames are rotatably connected to the frame, and the first light source and the second light source are respectively disposed on the two rotating frames. The frame is provided with an adjustment component for adjusting the angle of the rotating frames. The adjustment assembly includes a slot, a toothed block, and a gear. The slot is located on the frame, the toothed block is engaged in the slot, and the gear is located at the end of the rotating frame, meshing with the toothed block. The gear is equipped with a handle.

2. The copper foil quality inspection device for a copper foil cutting machine according to claim 1, characterized in that, Both the first light source and the second light source are strip light sources, and the width of both the first light source and the second light source is greater than the width of the copper foil.

3. The copper foil quality inspection device for a copper foil cutting machine according to claim 1, characterized in that, The frame is equipped with a detection roller, which is located between the unwinding roller and the rewinding roller, and the detection roller abuts against the copper foil.

4. The copper foil quality inspection device for a copper foil cutting machine according to claim 1, characterized in that, The frame is equipped with a dust removal assembly for cleaning copper foil.

5. A copper foil quality inspection device for a copper foil cutting machine according to claim 4, characterized in that, The dust removal assembly includes a fan, a duct, and a nozzle. The outlet of the fan is connected to the inlet of the duct, the outlet of the duct is connected to the inlet of the nozzle, and the outlet of the nozzle faces the copper foil.

6. A copper foil quality inspection device for a copper foil cutting machine according to claim 5, characterized in that, The air nozzle is provided in two parts, with the two air nozzles facing opposite sides of the copper foil.

7. A copper foil quality inspection device for a copper foil cutting machine according to claim 5, characterized in that, A filter screen is provided at the outlet of the air nozzle.

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