Thin film defect detection device

Abstract

The utility model belongs to the field of film detection, and relates to a film defect detection device which comprises a base, a feeding frame and a discharging frame are arranged at the two ends of the base respectively, a roller groove is formed in the feeding frame, a notch communicated with the roller groove is formed in the front end of the feeding frame, a locking piece is arranged at the notch, and a first roller, a second roller and a CCD detection camera are further arranged on the feeding frame. A breakage detection assembly is arranged on the base, a third roller and a fourth roller are arranged at the two ends of the breakage detection assembly respectively, a discharging roller is rotationally connected to the discharging frame, and a rotating motor is connected to the discharging roller. According to the utility model, surface flaws of the film are detected and recorded through the CCD detection camera, and the breakage of the film is detected through the airflow plate and the induction plate in order to avoid the situation that color points, bubbles or breakage cannot be distinguished, so that the surface flaws of the film are automatically detected.

Description

Technical Field

[0001] The utility model belongs to the field of film detection and relates to a film defect detection device. Background Art

[0002] Film defect detection refers to the detection and analysis of defects such as holes, mosquitoes, black spots, crystal points, scratches, spots, etc. on the surface of the film to ensure the quality and performance of the film. The human eye often cannot judge defects in a timely and accurate manner during the production process. The existing utility model patent with patent number CN217846103U, a film defect detection device includes a base plate, a mounting rod is installed on the outer wall of one side of the base plate, a cylinder is provided on the top outer wall of the mounting rod, one end of the cylinder extension rod is connected to a detection probe, a display screen is provided on the outer wall of one side of the mounting rod, the display screen is electrically connected to the detection probe, a mounting groove is provided on the top outer wall of the base plate, an adjusting rod is connected to the inner wall of the mounting groove through a bearing, and movable pads distributed at equal distances are symmetrically arranged on the outer wall of the adjusting rod, and lamp beads are provided on the top outer walls of several movable pads, and a first knob is connected to one end of the adjusting rod.

[0003] The prior art has the following technical defects:

[0004] The above technical solution uses electronic components to supplement light and amplify the film, but it still requires manual detection and cannot achieve automatic and rapid detection, which is inefficient. Utility Model Content

[0005] The technical problem to be solved by the utility model is to overcome the deficiencies of the prior art and provide a film defect detection device.

[0006] The film defect detection device described in the utility model comprises a base, a loading rack and a unloading rack are respectively provided at both ends of the base, a roller groove is provided on the loading rack, a notch connected to the roller groove is provided at the front end of the loading rack, a locking piece is provided at the notch, a first roller, a second roller and a CCD detection camera are also provided on the loading rack, a damage detection component is provided on the base, a third roller and a fourth roller are respectively provided at both ends of the damage detection component, a unloading roller is rotatably connected to the unloading rack, and a rotating motor is connected to the unloading roller.

[0007] Working process or working principle:

[0008] During operation, the film roller is placed in the roller groove, and the film is passed around the first roller, the second roller, the third roller and the fourth roller in turn and wound around the feed roller. The feed roller is driven by a rotating motor to wind the film. When the film passes between the first roller and the second roller, the black spots, stains, etc. on the surface of the film are detected by a CCD detection camera. The CCD detection camera is a prior art. CCD is a semiconductor device that can convert optical images into digital signals. The detected film passes through the third roller and enters the damage detection component for damage detection, and is finally wound around the feed roller through the fourth roller to achieve the entire detection and winding.

[0009] The damage detection component includes a detection plate fixed on the base, there is a cavity between the base and the detection plate, a plurality of air outlets are provided on the base, and a sensing element adapted to the air outlet is provided on the detection plate. The sensing element is used to check the gas ejected from the air outlet to detect the breakage of the film, and the air outlets are evenly and densely laid on the base.

[0010] The unloading rack is provided with a sliding groove, in which a lead screw is rotatably connected, and a nut seat adapted to the unloading roller is connected to the lead screw. A lifting motor connected to the lead screw is provided on the top of the unloading rack. The unloading roller can be lifted and lowered by the lead screw and the motor, which facilitates the loading and unloading of the unloading roller.

[0011] The locking member includes a baffle rotatably connected to the inside of the loading rack, a ratchet locking mechanism adapted to the baffle is provided in the loading rack, and an unlocking member adapted to the ratchet locking mechanism is provided on the loading rack. When the rolled film is rolled into the roller groove, one baffle is pressed into the loading rack, and the other baffle is rotated out of the loading rack. The ratchet is used to achieve locking to prevent the baffle from flipping over and causing the film roller to slide out of the roller groove. When the film is completely detected, the ratchet locking mechanism is opened by the unlocking member so that the baffle can be flipped over and the film roller can be taken out. The ratchet locking mechanism here is prior art and will not be described in detail herein.

[0012] The loading rack is provided with a linear light source compatible with the CCD detection camera. Through the structure of the linear light source and the loading rack, the light source can be evenly projected onto the film, making it convenient for the CCD detection camera to detect it and improving the detection effect.

[0013] The front ends of the loading racks are fixedly connected with air pipe racks, on which blowing pipes are arranged, and when the film is about to pass by the first roller, a CCD detection camera is used to detect black spots, bubbles, folds and cracks on the surface, and air is blown on the film to blow away dust on the surface of the film, thereby preventing the film from being re-stained with dust during the transfer process.

[0014] Compared with the prior art, the beneficial effects of the utility model are:

[0015] The utility model detects and records the surface defects of the film by using a CCD detection camera. In order to avoid being unable to distinguish whether it is a color spot, bubble or breakage, the film breakage is detected by an airflow plate and a sensor plate to realize automatic detection of film surface defects. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is one of the structural schematic diagrams of an embodiment of the utility model.

[0017] Figure 2 This is the second structural diagram of an embodiment of the utility model.

[0018] Figure 3 This is the third structural diagram of an embodiment of the utility model.

[0019] Figure 4 It is a schematic diagram of the internal operation of an embodiment of the utility model.

[0020] In the figure: 1. lifting motor; 2. unloading rack; 3. nut seat; 4. lead screw; 5. fourth roller; 6. base; 7. loading rack; 8. roller groove; 9. unlocking piece; 10. air pipe rack; 11. blowing pipe; 12. baffle; 13. first roller; 14. second roller; 15. detection plate; 16. rotating motor; 17. air outlet; 18. third roller; 19. CCD detection camera; 20. unloading roller; 21. sliding groove. DETAILED DESCRIPTION

[0021] Example 1

[0022] like Figure 1 to Figure 4As shown, the film defect detection device described in the utility model includes a base 6, a loading frame 7 and a lowering frame 2 are respectively provided at both ends of the base 6, a roller groove 8 is provided on the loading frame 7, a notch connected to the roller groove 8 is provided at the front end of the loading frame 7, a locking member is provided at the notch, a first roller 13, a second roller 14 and a CCD detection camera 19 are also provided on the loading frame 7, a damage detection component is provided on the base 6, a third roller 18 and a fourth roller 5 are respectively provided at both ends of the damage detection component, a lowering frame 2 is rotatably connected to a lowering roller 20, and a rotating motor 16 is connected to the lowering roller 20; the damage detection component includes a detection plate 1 fixed to the base 6 5, there is a cavity between the base 6 and the detection plate 15, a plurality of air outlets 17 are provided on the base 6, and a sensing piece adapted to the air outlet 17 is provided on the detection plate 15, and the gas ejected from the air outlet 17 is checked by the sensing piece to detect the film breakage, and the air outlets 17 are evenly and densely laid on the base 6; the unloading frame 2 is provided with a sliding groove 21, and a lead screw 4 is rotatably connected in the sliding groove 21, and a nut seat 3 adapted to the unloading roller 20 is connected to the lead screw 4, and a lifting motor 1 connected to the lead screw 4 is provided on the top of the unloading frame 2, and the lifting and lowering of the unloading roller 20 can be realized by the lead screw 4 and the motor, which is convenient for unloading. The loading and unloading of the roller 20; the locking member includes a baffle 12 rotatably connected to the inside of the loading rack 7, a ratchet locking mechanism adapted to the baffle 12 is provided in the loading rack 7, and an unlocking member 9 adapted to the ratchet locking mechanism is provided on the loading rack 7. When the rolled film is rolled into the roller groove 8, one baffle 12 is pressed to enter the loading rack 7, and the other baffle 12 is rotated out of the loading rack 7. The ratchet is used to achieve locking to prevent the baffle 12 from flipping over and causing the film roller to slide out of the roller groove 8. When the film is completely detected, the ratchet locking mechanism is opened by the unlocking member 9 so that the baffle 12 can be flipped over and the film roller can be taken out. The ratchet locking mechanism here is a prior art , which will not be described in detail here; the loading rack 7 is provided with a linear light source compatible with the CCD detection camera 19. Through the structure of the linear light source and the loading rack 7, the light source can be evenly projected onto the film, which is convenient for the CCD detection camera 19 to detect it and improve the detection effect; the front end of the loading rack 7 is fixedly connected to an air pipe rack 10 on both sides, and the air pipe rack 10 is provided with a blowing pipe 11. When the film is about to bypass the first roller and use the CCD detection camera 19 to detect black spots, bubbles, folds and cracks on the surface, air is blown on it to blow away dust on the surface of the film and avoid re-contamination with dust during the transfer process.

[0023] Working process or working principle:

[0024] During operation, the film roller is placed in the roller groove 8, and the film is passed around the first roller, the second roller 14, the third roller 18 and the fourth roller 5 in turn and wrapped around the discharge roller 20. The discharge roller 20 is driven by the rotating motor 16 to wind. When the film passes between the first roller and the second roller 14, the black spots, stains, etc. on the surface of the film are detected by the CCD detection camera 19. The inspected film passes through the third roller 18 and enters the damage detection component for damage detection. The damage detection component uses the induction component to check the gas ejected from the air outlet 17 to detect the breakage of the film. The principle can refer to the prior art (a film defect detection device and detection method with application number CN202111075429.3). Finally, it is wrapped around the discharge roller 20 by the fourth roller 5 to realize the entire detection and winding.

[0025] The utility model detects and records the surface defects of the film through the CCD detection camera 19. In order to avoid being unable to distinguish whether it is a color spot, bubble or breakage, the film is broken through the airflow plate and the sensor plate to realize automatic detection of film surface defects.

[0026] The description of the direction and relative position relationship of the structure in the present invention, such as the description of front, back, left, right, up, and down, does not constitute a limitation of the present invention, but is only for the convenience of description.

Claims

1. A film defect detection device, characterized in that: The invention comprises a base (6), wherein a loading frame (7) and a discharging frame (2) are respectively provided at two ends of the base (6), a roller groove (8) is provided on the loading frame (7), a notch connected to the roller groove (8) is provided at the front end of the loading frame (7), a locking member is provided at the notch, a first roller (13), a second roller (14) and a CCD detection camera (19) are also provided on the loading frame (7), a damage detection component is provided on the base (6), a third roller (18) and a fourth roller (5) are respectively provided at two ends of the damage detection component, a discharging frame (2) is rotatably connected to a discharging roller (20), and a rotating motor (16) is connected to the discharging roller (20).

2. The thin film defect detection device according to claim 1, characterized in that: The damage detection component comprises a detection plate (15) fixed on a base (6); a cavity is formed between the base (6) and the detection plate (15); a plurality of air outlets (17) are provided on the base (6); and a sensing element adapted to the air outlets (17) is provided on the detection plate (15).

3. The film defect detection device according to claim 2, characterized in that: The unloading rack (2) is provided with a sliding groove (21), a lead screw (4) is rotatably connected in the sliding groove (21), a nut seat (3) adapted to the unloading roller (20) is connected to the lead screw (4), and a lifting motor (1) connected to the lead screw (4) is provided at the top of the unloading rack (2).

4. The thin film defect detection device according to claim 1, characterized in that: The locking member comprises a baffle (12) rotatably connected to the inside of the loading rack (7), a ratchet locking mechanism matched with the baffle (12) is provided in the loading rack (7), and an unlocking member (9) matched with the ratchet locking mechanism is provided on the loading rack (7).

5. The thin film defect detection device according to any one of claims 1 to 4, characterized in that: The loading rack (7) is provided with a linear light source that is compatible with the CCD detection camera (19).

6. The thin film defect detection device according to claim 5, characterized in that: Both sides of the front end of the loading rack (7) are fixedly connected with air pipe racks (10), and the air pipe racks (10) are provided with blowing pipes (11).

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