Surface defect detection device for film coating

Abstract

The utility model discloses a surface defect detection device for film coating, which relates to the technical field and comprises a darkroom, a detection roller is rotatably mounted in the darkroom, and a marking mechanism is arranged on the detection roller and is used for marking the part with surface defects after film coating; the marking mechanism comprises a sliding frame, the sliding frame is fixedly installed on the inner wall of the darkroom, a marking rod is connected into the sliding frame through a spring, and a marking block is fixedly installed at one end of the marking rod; the defect part of the film can be marked through the marking block under the non-stop condition, later repair or removal is facilitated, meanwhile, the width of each time of marking is consistent and is irrelevant to the passing speed of the film, and the detection applicability is effectively improved.

Description

Technical Field

[0001] This utility model relates to the technical field of thin film surface defect detection devices, and in particular to a surface defect detection device for thin film coating. Background Technology

[0002] In the thin film coating process, the detection of surface defects is very important because these defects may affect the performance and quality of the thin film. Existing surface defect detection methods include illuminating the thin film with light, taking pictures with a camera, and then comparing the pictures; or illuminating the thin film in a dark room, projecting the image of the coated thin film onto an observation board, and then manually inspecting it.

[0003] Manual inspection has the advantages of low investment and cheap equipment, but when defects are detected on the film surface, the location of the defects needs to be marked, which requires stopping the machine, greatly affecting the efficiency of the inspection. Utility Model Content

[0004] The main objective of this invention is to provide a surface defect detection device for thin film coating, which can effectively solve the technical problems in the background art.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0006] A surface defect detection device for thin film coating includes a dark chamber, in which a detection roller is rotatably mounted, and a marking mechanism is provided on the detection roller for marking the parts with surface defects after thin film coating.

[0007] The marking mechanism includes a sliding frame, which is fixedly installed on the inner wall of the darkroom. A marking rod is connected to the sliding frame by a spring, and a marking block is fixedly installed at one end of the marking rod.

[0008] As a further embodiment of this utility model, a drive gear is fixedly connected to the detection roller, the drive gear is meshed with a toothed belt, the toothed belt is internally meshed with a driven gear, the driven gear is rotatably connected to a mounting shaft, and the mounting shaft is fixedly connected to the inner wall of the darkroom.

[0009] As a further embodiment of this utility model, a sliding frame is fixedly installed on the inner wall of the dark room, and a clamping block is slidably connected inside the sliding frame. The clamping block can be connected to the toothed belt by clamping.

[0010] As a further embodiment of this utility model, a top rod is fixedly mounted on the surface of the mounting shaft, and the top rod is connected to a limit rod by a spring. A sliding rod is slidably mounted through the surface of the mounting shaft, and a limit hole is formed on the sliding rod, the limit hole being adapted to the limit rod.

[0011] As a further embodiment of this utility model, one side of the sliding rod is in close contact with the adjusting rod, and the other side of the sliding rod is in close contact with the clamping block.

[0012] As a further embodiment of this utility model, a control rod is slidably installed through the darkroom, the control rod is connected to the inner wall of the darkroom by a spring, and the control rod is in close contact with the clamping block.

[0013] As a further embodiment of this utility model, a plurality of lamp tubes are fixedly installed on the rear inner wall of the darkroom, and an observation plate is fixedly installed on the front side of the darkroom.

[0014] The beneficial effects of this utility model are as follows:

[0015] By setting up a marking mechanism, defective parts of the film can be marked with marking blocks without stopping the machine, which facilitates later repair or removal. At the same time, the width of each mark is consistent and independent of the film's throughput speed, effectively improving the applicability of the inspection.

[0016] By setting a marking mechanism, when the clamping block is held on the toothed belt, it can squeeze the marking rod into close contact with the film. When the clamping block contacts the limiting rod, the marking rod returns to its original position, so that the marking time of the marking rod is consistent with the time after the clamping block clamps the toothed belt and the time when the clamping block contacts the limiting rod. Since the rotation speed of the toothed belt is consistent with the passing speed of the film, the width of each mark is consistent. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of a surface defect detection device for thin film coating according to the present invention;

[0018] Figure 2 This is a schematic diagram of the marking mechanism of a surface defect detection device for thin film coating according to the present invention;

[0019] Figure 3 This is a partial exploded view of the marking mechanism of a surface defect detection device for thin film coating according to the present invention;

[0020] Figure 4 This is a schematic diagram of the internal structure of the sliding frame of a surface defect detection device for thin film coating according to the present invention;

[0021] Figure 5 This is a schematic diagram of the adjusting rod and its connecting part of a surface defect detection device for thin film coating according to the present invention;

[0022] Figure 6 This utility model relates to a surface defect detection device for thin film coating. Figure 5 Partially disassembled and enlarged diagram.

[0023] In the diagram: 1. Darkroom; 2. Detection roller; 3. Lamp tube; 4. Observation plate; 5. Marking mechanism; 6. Driving gear; 7. Toothed belt; 8. Driven gear; 9. Mounting shaft; 10. Sliding frame; 11. Marking rod; 12. Marking block; 13. Adjusting rod; 14. Top rod; 15. Limiting rod; 16. Sliding rod; 17. Limiting hole; 18. Clamping block; 19. Sliding frame; 20. Control rod. Detailed Implementation

[0024] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0025] like Figure 1-5 As shown, a surface defect detection device for thin film coating includes a dark chamber 1. Two detection rollers 2 are rotatably mounted inside the dark chamber 1. The thin film to be inspected passes through the two detection rollers 2, and the space between the two detection rollers 2 is the inspection space. Multiple lamps 3 are fixedly installed at the rear end of the inner wall of the dark chamber 1 to irradiate the thin film passing through the two detection rollers 2, thereby projecting the coated surface of the film. An observation plate 4 is fixedly installed at the front end of the dark chamber 1. The coated surface of the film is projected onto the observation plate 4 in conjunction with the lamps 3, facilitating the inspection of the coated film surface by the operator.

[0026] In this embodiment, a marking mechanism 5 is provided on one side of the upper detection roller 2 to mark films with observed surface defects. The marking width is the distance between the two detection rollers 2, which improves the accuracy of marking. It only requires the defect to be within the operator's line of sight, reducing the difficulty of marking. Furthermore, the marking width remains constant regardless of the film's speed through the detection device, improving the applicability of marking. The marking mechanism 5 includes a drive gear 6, which is fixedly mounted on the detection roller 2. The detection roller 2 can drive the drive gear 6 to rotate synchronously, ensuring that the rotational speed of the drive gear 6 matches the rotational speed of the detection roller 2, i.e., the film's passing speed. The drive gear 6 is connected to the driven gear 8 via a toothed belt 7, and the circumference of the toothed belt 7 is the same as the distance between the two detection rollers 2.

[0027] In this embodiment, a sliding frame 10 is fixedly installed on the inner wall of the darkroom 1. A marking rod 11 is connected to the sliding frame 10 by a spring, so that the marking rod 11 will not contact the film under the elastic force of the spring when no defects are found. A marking block 12 is fixedly installed at one end of the marking rod 11 for marking the surface of the film. An adjusting rod 13 is slidably installed through the sliding frame 10 and is fixedly connected to the marking rod 11. The adjusting rod 13 is used to adjust the position of the marking rod 11, thereby controlling whether the film is marked.

[0028] In this embodiment, the driven gear 8 is rotatably mounted on the mounting shaft 9, and a push rod 14 is fixedly mounted on the mounting shaft 9. The push rod 14 is connected to a limit rod 15 via a spring. The limit rod 15 consists of two vertical rods of different lengths and a horizontal rod. A sliding rod 16 is slidably mounted through the mounting shaft 9. The sliding rod 16 is in close contact with the adjusting rod 13. When the sliding rod 16 presses against the adjusting rod 13, the adjusting rod 13 drives the marking block 12 to work. A limit hole 17 is provided on the sliding rod 16, and the limit hole 17 is adapted to the limit rod 15 so that the sliding rod 16 can be limited by the limit rod 15 when it presses against the adjusting rod 13.

[0029] In this embodiment, a sliding frame 19 is fixedly installed on the inner wall of the darkroom 1, and a clamping block 18 is slidably installed inside the sliding frame 19. The clamping block 18 can be detachably clamped onto the toothed belt 7. The clamping block 18 is in close contact with the sliding rod 16. The upper and lower ends of the clamping claws of the clamping block 18 and the side near the toothed belt 7 are all arc-shaped structures, which makes the clamping block 18 more stable when clamping and disengaging from the toothed belt 7.

[0030] A control rod 20 is slidably installed through the darkroom 1. The control rod 20 is connected to the inner wall of the darkroom 1 by a spring. The control rod 20 is in close contact with the clamping block 18. By pressing the control rod 20, the clamping block 18 can be moved forward along the sliding frame 19, the jaws open, and the clamping block 18 is clamped on the toothed belt 7.

[0031] It should be noted that this utility model is a surface defect detection device for thin film coating. In use, the thin film passes through two detection rollers 2 and then through a dark chamber 1. The thin film between the two detection rollers 2 is projected onto an observation plate 4 by a lamp tube 3, facilitating the inspection of the coated film surface by the operator. When a defect is found on the film surface, the control rod 20 is pressed, which squeezes the clamping block 18. The clamping block 18 moves along the sliding frame 19, the jaws open, and the clamping block 18 is clamped on the toothed belt 7. The displacement of the clamping block 18 squeezes the sliding rod 16, which in turn squeezes the limiting rod 15. The limiting rod 15 is engaged in the limiting hole 17 under the elastic force of the spring, thus limiting the position of the sliding rod 16. When the sliding rod 16 moves, it simultaneously squeezes the adjusting rod 13, which drives the marking rod 11 to move, thereby bringing the marking rod 11 into contact with the film, allowing the marking block 12 to mark the film surface.

[0032] As the film continues to move, the detection roller 2 also rotates continuously. The detection roller 2 drives the drive gear 6 to rotate, which in turn drives the toothed belt 7 to rotate. The rotation of the toothed belt 7 causes the clamping block 18 to move synchronously along the sliding frame 19. When the clamping block 18 moves to the position of the limiting rod 15, the gripper of the clamping block 18 contacts one end of the limiting rod 15, squeezing the limiting rod 15 upward, causing the limiting rod 15 to disengage from the limiting hole 17. At this time, under the elastic force of the spring inside the sliding frame 10, the marking rod 11 disengages from the film, and the marking ends. The displacement of the marking rod 11 causes the adjusting rod 13 to move, and the adjusting rod 13 squeezes the sliding rod 16, causing the sliding rod 16 to return to its original position. When the clamping block 18 contacts the sliding rod 16, the sliding rod 16 squeezes the clamping block 18, causing the clamping block 18 to disengage from the toothed belt 7 and return to its original position. This ensures that even when the rotation speed of the detection roller 2 is different, i.e., the film's passing speed is different, the marking width of the film is always the displacement distance of the clamping block 18 from the beginning to the point of contact with the limiting rod 15, and the marking width is consistent each time.

[0033] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A surface defect detection device for thin film coating, comprising a dark chamber (1), wherein a detection roller (2) is rotatably mounted inside the dark chamber (1), characterized in that: The detection roller (2) is provided with a marking mechanism (5) for marking the parts with surface defects after film coating; The marking mechanism (5) includes a sliding frame (10), which is fixedly installed on the inner wall of the darkroom (1). A marking rod (11) is connected to the sliding frame (10) by a spring, and a marking block (12) is fixedly installed at one end of the marking rod (11).

2. The surface defect detection device for thin film coating according to claim 1, characterized in that: A drive gear (6) is fixedly connected to the detection roller (2), and a toothed belt (7) is meshed with the drive gear (6). A driven gear (8) is meshed with the toothed belt (7). A mounting shaft (9) is rotatably connected to the driven gear (8). The mounting shaft (9) is fixedly connected to the inner wall of the dark chamber (1).

3. The surface defect detection device for thin film coating according to claim 1, characterized in that: A sliding frame (19) is fixedly installed on the inner wall of the darkroom (1), and a clamping block (18) is slidably connected inside the sliding frame (19). The clamping block (18) can be connected to the toothed belt (7) by clamping.

4. The surface defect detection device for thin film coating according to claim 2, characterized in that: A top rod (14) is fixedly mounted on the surface of the mounting shaft (9). The top rod (14) is connected to a limit rod (15) by a spring. A sliding rod (16) is slidably mounted through the surface of the mounting shaft (9). A limit hole (17) is opened on the sliding rod (16). The limit hole (17) is adapted to the limit rod (15).

5. The surface defect detection device for thin film coating according to claim 4, characterized in that: One side of the sliding rod (16) is in close contact with the adjusting rod (13), and the other side of the sliding rod (16) is in close contact with the clamping block (18).

6. The surface defect detection device for thin film coating according to claim 1, characterized in that: A control rod (20) is slidably installed through the darkroom (1). The control rod (20) is connected to the inner wall of the darkroom (1) by a spring. The control rod (20) is in close contact with the clamping block (18).

7. The surface defect detection device for thin film coating according to claim 1, characterized in that: Multiple lamp tubes (3) are fixedly installed on the rear inner wall of the darkroom (1), and an observation plate (4) is fixedly installed on the front side of the darkroom (1).

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