A copper foil surface defect detection device

Abstract

The application discloses a copper foil surface defect detection equipment and belongs to the technical field of copper foil detection. Mainly includes: base and leveling mechanism, the top of base is vertically installed with backstop, the side of backstop is respectively rotatably connected with unwinding roller and winding roller, and the side of backstop is installed with support plate, the side of backstop and above support plate is installed with detection camera, leveling mechanism includes installation frame and two leveling blocks, the bottom of installation frame is rotatably connected with four pairs of connecting arms, and the two sides of two leveling blocks are rotatably connected with four pairs of connecting arms. The copper foil surface defect detection equipment of the application carries out pretreatment on the surface of copper foil through the leveling mechanism, uses a pair of leveling blocks to flatten the copper foil on the top of support plate, effectively eliminates the wrinkles and unevenness of the detection area on the surface of copper foil, significantly improves the recognition accuracy of the detection camera on defects, reduces the false detection and missed detection caused by the poor surface state of copper foil, and improves the overall detection quality.

Description

Technical Field

[0001] This application relates to the field of copper foil inspection technology, specifically a copper foil surface defect inspection device. Background Technology

[0002] Copper foil is a cathodic electrolytic material, a thin, continuous metal foil deposited on the substrate layer of a circuit board. As a conductor in the PCB, it easily adheres to the insulating layer, receives the printed protective layer, and forms the circuit pattern after etching. During the copper foil production and processing, a surface defect detection device is needed to detect the flatness of the copper foil.

[0003] Chinese Patent Announcement No. CN220304522U discloses a surface defect detection device. This solution, through the coordinated operation of a copper foil roller, a transmission roller, a mounting plate, a defect detection probe, a cylinder, and a pigment plate, can mark the location of copper foil defects on the surface, facilitating subsequent retrieval. It has a simple structure, saves time and effort, and is highly practical.

[0004] In the above scheme, copper foil is transported on the inspection table by copper foil rollers and transmission rollers, and the surface of copper foil is inspected for defects by a defect detection probe. However, during the copper foil transport process, wrinkles may be generated in the inspection area of ​​the copper foil surface due to mechanical vibration, uneven tension, etc. The tiny wrinkles on the surface of the copper foil may be misjudged as defects, resulting in false detection and thus reducing the accuracy of copper foil surface inspection.

[0005] Therefore, it is necessary to provide a copper foil surface defect detection device to solve the above problems.

[0006] It should be noted that the information disclosed in this background section is only for understanding the background technology of this application concept, and therefore may include information that does not constitute prior art. Utility Model Content

[0007] Based on the aforementioned problems in the existing technology, the problem to be solved by this application is to provide a copper foil surface defect detection device, which pre-processes the copper foil surface through a leveling mechanism and uses a pair of leveling blocks to level the copper foil on the top of the support plate, effectively eliminating wrinkles and unevenness in the detection area of ​​the copper foil surface, significantly improving the accuracy of the detection camera in identifying defects, reducing false detections and missed detections caused by poor copper foil surface condition, and improving the overall detection quality.

[0008] The technical solution adopted by this application to solve its technical problem is: a copper foil surface defect detection device, comprising: a base and a leveling mechanism, wherein a rear baffle is vertically installed on the top of the base, an unwinding roller and a winding roller are rotatably connected to one side of the rear baffle, and a support plate is installed on one side of the rear baffle, and a detection camera is installed on one side of the rear baffle and above the support plate; the leveling mechanism includes a mounting frame and two leveling blocks, four pairs of connecting arms are rotatably connected to the bottom of the mounting frame, the four pairs of connecting arms are rotatably connected to the two sides of the two leveling blocks respectively, and a pair of reset members are installed between the four pairs of connecting arms; wherein, a lifting mechanism for driving the mounting frame to move vertically is also installed on the base.

[0009] Furthermore, the reset component includes a fixing block, and two connecting rods are rotatably connected to the outside of the fixing block, the connecting rods being rotatably connected to the connecting arm.

[0010] Furthermore, a spring is installed on the top of the fixing block, and the end of the spring away from the fixing block is connected to the bottom of the mounting frame.

[0011] Furthermore, the bottom of the leveling block is set in a semi-circular shape.

[0012] Furthermore, each pair of connecting arms is arranged in parallel to each other.

[0013] Furthermore, a connecting block is installed on one side of the mounting frame, and a sliding groove is provided on the rear baffle. The connecting block passes through the sliding groove and is slidably connected to the sliding groove.

[0014] Furthermore, the lifting mechanism includes a motor mounted on the rear baffle, the output end of the motor being keyed to a screw, and a threaded sleeve matching the screw being mounted on the connecting block.

[0015] Furthermore, two guide rollers are rotatably connected to one side of the rear baffle. The two guide rollers are symmetrically distributed on both sides of the support plate, and the tops of the two guide rollers are flush with the top of the support plate.

[0016] The beneficial effects of this application are as follows: The copper foil surface defect detection device provided by this application pre-processes the copper foil surface through a leveling mechanism and uses a pair of leveling blocks to level the copper foil on the top of the support plate, effectively eliminating wrinkles and unevenness in the detection area of ​​the copper foil surface, significantly improving the accuracy of the detection camera in identifying defects, reducing false detections and missed detections caused by poor copper foil surface condition, and improving the overall detection quality.

[0017] In addition to the purposes, features, and advantages described above, this application has other purposes, features, and advantages. A further detailed description of this application will be provided below with reference to the figures. Attached Figure Description

[0018] The accompanying drawings, which form part of this application, are used to provide a further understanding of this application. The illustrative embodiments of this application and their descriptions are used to explain this application and do not constitute an undue limitation of this application.

[0019] In the attached diagram:

[0020] Figure 1 This is a schematic diagram of the first overall structure;

[0021] Figure 2 This is a schematic diagram of the second overall structure;

[0022] Figure 3 A schematic diagram of the leveling mechanism and the lifting mechanism;

[0023] Figure 4 This is a schematic diagram of the leveling mechanism;

[0024] Figure 5 for Figure 4 Enlarged structural diagram at point A in the middle.

[0025] The following are the labeling elements in the figure:

[0026] 1. Base; 2. Rear baffle; 3. Unwind roller; 4. Rewind roller; 5. Guide roller; 6. Support plate; 7. Leveling mechanism; 71. Mounting frame; 72. Connecting arm; 73. Leveling block; 74. Connecting rod; 75. Spring; 76. Fixing block; 77. Connecting block; 8. Detection camera; 9. Lifting mechanism; 91. Motor; 92. Screw. Detailed Implementation

[0027] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. This application will now be described in detail with reference to the accompanying drawings and embodiments.

[0028] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort should fall within the scope of protection of the present application.

[0029] like Figure 1-5As shown, this application provides a copper foil surface defect detection device, including: a base 1 and a leveling mechanism 7. A rear baffle 2 is vertically installed on the top of the base 1 and is fixed to the top of the base 1 by welding. An unwinding roller 3 and a winding roller 4 are rotatably connected to one side of the rear baffle 2. Both the unwinding roller 3 and the winding roller 4 are driven by motors. A support plate 6 is installed on one side of the rear baffle 2 and is fixed to one side of the rear baffle 2 by bolts. A detection camera 8 is installed on one side of the rear baffle 2 and above the support plate 6. The leveling mechanism 7 includes a mounting frame 71 and two leveling blocks 73. The mounting frame 71 has a frame-shaped structure to avoid obstructing the detection camera 8 above. The bottom of the leveling blocks 73 is semi-circular. Four pairs of connecting arms 72 are rotatably connected to the bottom of the mounting frame 71. The four pairs of connecting arms 72 are rotatably connected to the two sides of the two leveling blocks 73 respectively. A pair of reset members are installed between the four pairs of connecting arms 72. The base 1 is also equipped with a lifting mechanism 9 for driving the mounting frame 71 to move vertically.

[0030] In this embodiment, the proposed solution is a device for defect detection on the surface of processed copper foil. Specifically, the copper foil to be inspected is wound around the outer wall of the unwinding roller 3, then placed on the support plate 6, and one end of the copper foil is connected to the winding roller 4. The copper foil is then conveyed by intermittently rotating the unwinding roller 3 and the winding roller 4. The inspection camera 8 can detect defects on the surface of the copper foil. Before each defect detection, the mounting frame 71 can be controlled to move vertically downwards using the lifting mechanism 9 until the two leveling blocks 73 abut against the top of the copper foil. The mounting frame 71 continues to move vertically downwards. Under the action of the connecting arm 72, a pair of leveling blocks 73 can move away from each other on the copper foil surface, so that the pair of leveling blocks 73 can flatten the copper foil on the top of the support plate 6, effectively eliminating wrinkles and unevenness in the detection area of ​​the copper foil surface. Then, the lifting mechanism 9 controls the mounting frame 71 to move vertically upward, so that the pair of leveling blocks 73 are separated from the copper foil surface and move closer to each other under the action of the reset member. The leveling mechanism pre-processes the copper foil surface, effectively eliminating wrinkles and unevenness, significantly improving the accuracy of the inspection camera in identifying defects, reducing false detections and missed detections caused by poor copper foil surface condition, and improving the overall inspection quality.

[0031] It should be noted that the inspection camera 8 is used to detect the flatness of the copper foil surface, thereby performing defect detection on the copper foil. The inspection camera 8 is installed in an appropriate position to clearly capture images of the copper foil surface. Through the coordinated work of the lens and sensor, the image of the copper foil surface is converted into a digital signal and transmitted to the image processing system for comparison and analysis, thereby performing defect detection. These defects include scratches, holes, stains, etc.

[0032] like Figure 3-5 As shown, the reset component includes a fixing block 76, with two connecting rods 74 rotatably connected to the outside of the fixing block 76. The connecting rods 74 are rotatably connected to the connecting arm 72. A spring 75 is installed on the top of the fixing block 76, and the end of the spring 75 away from the fixing block 76 is connected to the bottom of the mounting frame 71.

[0033] In this embodiment, when the lifting mechanism 9 controls the mounting frame 71 to move vertically downward until the two leveling blocks 73 abut against the top of the copper foil, and continues to control the mounting frame 71 to move vertically downward, the connecting arm 72 can drive the pair of leveling blocks 73 to move away from each other on the copper foil surface. Under the action of the connecting rod 74, the fixing block 76 can be controlled to move vertically upward, thereby compressing the spring 75. When the lifting mechanism 9 controls the mounting frame 71 to move vertically upward, causing the pair of leveling blocks 73 to detach from the copper foil surface, the spring 75 can apply a downward elastic force to the fixing block 76 using its own elastic force, causing the pair of leveling blocks 73 to move closer to each other.

[0034] like Figure 3-4 As shown, each pair of connecting arms 72 is arranged in parallel to each other.

[0035] In this embodiment, by arranging each pair of connecting arms 72 in parallel with each other, it is ensured that the two leveling blocks 73 will not tilt during their movements of moving away from or towards each other.

[0036] like Figure 3-4 As shown, a connecting block 77 is installed on one side of the mounting frame 71. The connecting block 77 is fixed to one side of the mounting frame 71 by welding. A sliding groove is provided on the rear baffle 2. The connecting block 77 passes through the sliding groove and is slidably connected to the sliding groove. The lifting mechanism 9 includes a motor 91 installed on the rear baffle 2. The motor 91 is fixed to the top of the rear baffle 2 by bolts. A screw 92 is keyed to the output end of the motor 91. A threaded sleeve matching the screw 92 is installed on the connecting block 77.

[0037] In this embodiment, the motor 91 can control the screw 92 to rotate, which in turn drives the connecting block 77 to move, thereby controlling the vertical movement of the mounting frame 71.

[0038] like Figure 1 As shown, two guide rollers 5 are rotatably connected to one side of the rear baffle 2. The two guide rollers 5 are symmetrically distributed on both sides of the support plate 6, and the tops of the two guide rollers 5 are flush with the tops of the support plate 6.

[0039] In this embodiment, the guide roller 5 provides support for the copper foil and also guides the copper foil.

[0040] Working principle:

[0041] The copper foil to be inspected is wound around the outer wall of the unwinding roller 3, then placed on the support plate 6, and one end of the copper foil is connected to the take-up roller 4. At this time, the unwinding roller 3 and the take-up roller 4 can be rotated intermittently to allow the copper foil to be conveyed for a certain distance and then stopped. The inspection camera 8 can perform defect detection on the surface of the copper foil. Before each defect detection, the screw 92 can be rotated by the motor 91, which drives the connecting block 77 to move, thereby controlling the vertical movement of the mounting frame 71 until the two leveling blocks 73 abut against the top of the copper foil. Then, the mounting frame 71 continues to move vertically downward. At this time, under the action of the connecting arm 72, a pair of leveling blocks 73 can be driven to move away from each other on the copper foil surface, so that the pair of leveling blocks 73 can flatten the copper foil on the top of the support plate 6, effectively eliminating wrinkles and unevenness in the detection area of ​​the copper foil surface. Then, the motor 91 can control the screw 92 to rotate, driving the connecting block 77 to move, thereby controlling the mounting frame 71 to move vertically, so that the pair of leveling blocks 73 are separated from the copper foil surface and move closer to each other under the action of the reset member. Then, the unwinding roller 3 and the winding roller 4 are started, and the copper foil is transported for a certain distance and then stopped. The above operation is repeated.

[0042] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A copper foil surface defect detection device, characterized in that: include: A base (1) is provided with a rear baffle (2) vertically mounted on the top of the base (1). A unwinding roller (3) and a winding roller (4) are rotatably connected to one side of the rear baffle (2). A support plate (6) is installed on one side of the rear baffle (2). A detection camera (8) is installed on one side of the rear baffle (2) and above the support plate (6). The leveling mechanism (7) includes a mounting frame (71) and two leveling blocks (73). The bottom of the mounting frame (71) is rotatably connected to four pairs of connecting arms (72). The four pairs of connecting arms (72) are rotatably connected to the two sides of the two leveling blocks (73) respectively. A pair of reset members are installed between the four pairs of connecting arms (72). The base (1) is also equipped with a lifting mechanism (9) for driving the mounting frame (71) to move vertically.

2. The copper foil surface defect detection device according to claim 1, characterized in that: The reset component includes a fixing block (76), and two connecting rods (74) are rotatably connected to the outside of the fixing block (76). The connecting rods (74) are rotatably connected to the connecting arm (72).

3. The copper foil surface defect detection device according to claim 2, characterized in that: A spring (75) is installed on the top of the fixing block (76), and the end of the spring (75) away from the fixing block (76) is connected to the bottom of the mounting frame (71).

4. The copper foil surface defect detection device according to claim 1, characterized in that: The bottom of the leveling block (73) is set in a semi-circular shape.

5. The copper foil surface defect detection device according to claim 1, characterized in that: Each pair of connecting arms (72) is arranged in parallel to each other.

6. The copper foil surface defect detection device according to claim 1, characterized in that: A connecting block (77) is installed on one side of the mounting frame (71), and a sliding groove is provided on the rear baffle (2). The connecting block (77) passes through the sliding groove and is slidably connected to the sliding groove.

7. The copper foil surface defect detection device according to claim 6, characterized in that: The lifting mechanism (9) includes a motor (91) mounted on the rear baffle (2), the output end of the motor (91) is keyed to a screw (92), and a threaded sleeve matching the screw (92) is mounted on the connecting block (77).

8. The copper foil surface defect detection device according to claim 1, characterized in that: Two guide rollers (5) are rotatably connected to one side of the rear baffle (2). The two guide rollers (5) are symmetrically distributed on both sides of the support plate (6), and the top of the two guide rollers (5) is flush with the top of the support plate (6).

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