Aluminum foil defect detection device and detection method

Abstract

The present invention relates to the technical field of aluminum foil detection, and in particular to an aluminum foil defect detection device and a detection method, comprising a turntable rotatably connected to a detection table, the turntable being rotatably connected to a barrel, and a first clamping unit and a second clamping unit being provided on the turntable, and a clamping discharging unit being provided on one side outside the turntable, the aluminum foil material on the barrel being unwound as the barrel rotates, and being roller-transmitted by the first clamping unit and the second clamping unit in sequence, and then being clamped and discharged by the clamping discharging unit, when a second detection unit and a first detection unit detect defects at the same position, the second clamping unit is triggered to clamp and cut the aluminum foil material, until the first detection unit does not detect defects, the first clamping unit is triggered to clamp and cut the aluminum foil material, and the turntable is triggered to rotate, so that the aluminum foil material on the first clamping unit is discharged toward the clamping discharging unit, so as to avoid the problem that the defect position still needs to be identified and avoided in subsequent processing, resulting in complicated operation and affecting the efficiency of subsequent operations.

Description

Technical Field

[0001] The present invention relates to the technical field of aluminum foil detection, and in particular to an aluminum foil defect detection device and a detection method. Background Art

[0002] Aluminum foil is one of the commonly used materials for beer bottle labels. During the production and processing, it is often necessary to perform defect detection on the aluminum foil. In the prior art, for example, in the patents No. CN201120530578.X Aluminum Foil Surface Defect Detection System and CN200920091444.5 Aluminum Foil Defect Detection System Based on Computer Vision, the image information of the aluminum foil is mainly obtained through visual detection components. Among them, in the patent of the aluminum foil defect detection system based on computer vision, the defective parts are effectively marked by spray marking equipment.

[0003] However, even if the location of the defect is identified, it is still necessary to identify and avoid the defect mark location again in subsequent embossing, sheet breaking, flattening, die-cutting and other processing, which makes the operation complicated and affects the efficiency of subsequent operations. Therefore, it is not enough to meet higher practical needs. Summary of the invention

[0004] In view of this, the purpose of the present invention is to provide an aluminum foil defect detection device and detection method to solve the problem that the subsequent processing still needs to identify and avoid the defect position, which makes the operation complicated and affects the efficiency of subsequent operations.

[0005] Based on the above purpose, the present invention provides an aluminum foil defect detection device, including a detection platform, and also including:

[0006] A turntable is rotatably connected to the detection table, a barrel is rotatably connected to the turntable, a first clamping unit and a second clamping unit are provided on the turntable, a clamping and discharging unit is provided on one side outside the turntable, an aluminum foil is wound on the barrel, the aluminum foil is unwound and sequentially roller-transmitted by the first clamping unit and the second clamping unit, and then clamped and discharged by the clamping and discharging unit;

[0007] The first detection part is arranged adjacent to the first pinching and conveying unit and is used to detect surface defects of the aluminum foil;

[0008] The second detection part is arranged at the adjacent side of the second clamping unit, and is used for detecting surface defects of the aluminum foil. When the second detection part and the first detection part detect defects at the same position, the second clamping unit is triggered to clamp off the aluminum foil. When the first detection part detects no defects, the first clamping unit is triggered to clamp off the aluminum foil, and the turntable is triggered to rotate so that the aluminum foil on the first clamping unit is discharged toward the clamping discharge unit.

[0009] Preferably, a material guide roller is provided between the first clamping unit and the barrel for rotating and guiding the material.

[0010] Preferably, the clamping and discharging unit comprises discharging rollers arranged opposite to each other, which rotate relative to each other to clamp the aluminum foil material and convey the material.

[0011] Preferably, an air duct is provided at the bottom end adjacent to the clamping and discharging unit for blowing air toward the aluminum foil material to guide the aluminum foil material to be transported into the clamping and discharging unit for discharging.

[0012] Preferably, the first clamping and conveying unit includes a first clamping roller rotatably connected to the turntable, and a first fixed frame fixed on the turntable, the first fixed frame is rotatably connected to the first roller frame, the first roller frame is rotatably connected to the first resisting roller, and a first elastic member is provided at the rotational connection between the first roller frame and the first fixed frame to drive the first resisting roller to elastically press against the first clamping roller for rotation and clamping, and a first roller cutter is provided on the outer end of the first clamping roller, and when the first roller cutter turns to press against the first resisting roller, it is used to clamp and cut the aluminum foil.

[0013] Preferably, the second clamping and conveying unit includes a second clamping roller rotatably connected to the turntable, and a second fixed frame fixed on the detection table, the second fixed frame is rotatably connected to the second roller frame, the second roller frame is rotatably connected to the second resisting roller, and a second elastic member is provided at the rotational connection between the second roller frame and the second fixed frame to drive the second resisting roller to elastically press against the second clamping roller for rotational clamping and conveying, and a second roller cutter is provided on the outer end of the second clamping roller, and when the second roller cutter turns to press against the second resisting roller, it is used to clamp and cut the aluminum foil material.

[0014] Preferably, an alarm is provided on the turntable at one side adjacent to the first detection part, and when the first detection part detects a defect in the aluminum foil, the alarm is triggered to sound an alarm.

[0015] The present invention also provides an aluminum foil defect detection method, comprising the following steps:

[0016] a: The aluminum foil is unwound by the rotating barrel, and then is rolled and flattened by the first pinching unit and the second pinching unit, and then is pinched and discharged by the pinching and discharging unit;

[0017] b: During the conveyance of the aluminum foil, the surface defects are detected by the first detection part adjacent to the first pinching and conveying unit and the second detection part adjacent to the second pinching and conveying unit in sequence;

[0018] c: When the second detection unit and the first detection unit detect defects at the same position, the second clamping unit is triggered to clamp off the aluminum foil. When the first detection unit detects no defects, the first clamping unit is triggered to clamp off the aluminum foil and the turntable is triggered to rotate so that the aluminum foil on the first clamping unit is discharged toward the clamping discharge unit.

[0019] Preferably, it also includes d: after the aluminum foil material on the first pinching and conveying unit enters the pinching and conveying discharging unit for discharging, the turntable rotates and resets, and the aluminum foil material re-enters the second pinching and conveying unit for roller pressing and transmission.

[0020] Preferably, in step b, when the first detection unit detects a defect in the aluminum foil, an alarm is triggered.

[0021] The beneficial effects of the present invention are as follows: the aluminum foil is unwound as the barrel rotates, and is rolled and conveyed by the first clamping unit and the second clamping unit in sequence, and then is clamped and discharged by the clamping and discharging unit. During the transmission, the surface defects are detected by the first detection part and the second detection part in sequence. When the second detection part and the first detection part detect defects at the same position, the second clamping unit is triggered to clamp and cut the aluminum foil. When the first detection part does not detect defects, the first clamping unit is triggered to clamp and cut the aluminum foil, and the turntable is triggered to rotate, so that the aluminum foil on the first clamping unit is discharged toward the clamping and discharging unit. After the aluminum foil on the first clamping unit enters the clamping and discharging unit for discharge, the turntable rotates and resets, and the aluminum foil re-enters the second clamping unit for roller conveyance, avoiding continued transmission into the clamping and discharging unit, and discharging to subsequent processing procedures, and quickly and efficiently introducing normal aluminum foil into the clamping and discharging unit to connect to subsequent processing procedures, which is beneficial to the overall continuous processing operation, so as to solve the problem that the subsequent processing still needs to identify and avoid the defect position operation, resulting in complicated operation and affecting the efficiency of subsequent operations. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings in the following description are only for the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0023] Figure 1 It is a structural schematic diagram of the aluminum foil material of the present invention during normal detection and transmission in the initial state;

[0024] Figure 2 It is a structural schematic diagram of the second clamping and conveying unit of the present invention when clamping and cutting off the aluminum foil;

[0025] Figure 3 It is a structural schematic diagram of the first clamping and conveying unit of the present invention when clamping and cutting off the aluminum foil;

[0026] Figure 4 It is a schematic diagram of the structure of the turntable of the present invention when it rotates;

[0027] Figure 5 It is a structural schematic diagram of the aluminum foil material on the first clamping and conveying unit being discharged toward the clamping and conveying discharging unit after the turntable of the present invention rotates;

[0028] Figure 6 It is a schematic diagram of the structure of the power connection between the detection platform and the turntable of the present invention.

[0029] The markings in the figure are:

[0030] 1. Inspection table; 2. Turntable; 3. Material barrel; 31. Aluminum foil material; 4. First pinching unit; 41. First pinching roller; 42. First fixed frame; 43. First roller frame; 44. First resisting roller; 45. First roller cutter; 5. Second pinching unit; 51. Second pinching roller; 52. Second fixed frame; 53. Second roller frame; 54. Second resisting roller; 55. Second roller cutter; 6. Pinch discharging unit; 61. Discharging roller; 7. First detection section; 8. Second detection section; 9. Material guide roller; 10. Air duct; 11. Alarm. DETAILED DESCRIPTION

[0031] In order to make the objectives, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with specific embodiments.

[0032] It should be noted that, unless otherwise defined, the technical terms or scientific terms used in the present invention should be understood by people with ordinary skills in the field to which the present invention belongs. The "first", "second" and similar words used in the present invention do not indicate any order, quantity or importance, but are only used to distinguish different components. "Include" or "comprise" and similar words mean that the elements or objects appearing before the word include the elements or objects listed after the word and their equivalents, without excluding other elements or objects. "Connect" or "connected" and similar words are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0033] like Figure 1 As shown, an aluminum foil defect detection device includes a detection platform 1, and also includes a turntable 2 rotatably connected to the detection platform 1, the turntable 2 is rotatably connected to a barrel 3, a first pinching unit 4 and a second pinching unit 5 are provided on the turntable 2, a pinching and discharging unit 6 is provided on the outer side of the turntable 2, an aluminum foil material 31 is wound on the barrel 3, the aluminum foil material 31 is unwound and sequentially rolled and conveyed by the first pinching unit 4 and the second pinching unit 5, and then pinched and discharged by the pinching and discharging unit 6, a first detection part 7 is provided on the adjacent side of the first pinching unit 4 for detecting surface defects of the aluminum foil material 31, a second detection part 8 is provided on the adjacent side of the second pinching unit 5 for detecting surface defects of the aluminum foil material 31, when the second detection part 8 and the first detection part 7 detect defects at the same position, the second pinching unit 5 is triggered to pinch off the aluminum foil material 31, until the first detection part 7 does not detect defects, the first pinching unit 4 is triggered to pinch off the aluminum foil material 31, and the turntable 2 is triggered to rotate, so that the aluminum foil material 31 on the first pinching unit 4 is discharged toward the pinching and discharging unit 6.

[0034] The present invention provides a turntable 2 rotatably connected to a detection table 1, a barrel 3 is rotatably connected to the turntable 2, and a first clamping unit 4 and a second clamping unit 5 are provided on the turntable 2, and a clamping discharging unit 6 is provided on one side outside the turntable 2, so that the aluminum foil material 31 on the barrel 3 is unwound as the barrel 3 rotates, and is successively rolled and conveyed by the first clamping unit 4 and the second clamping unit 5, and then is clamped and discharged by the clamping discharging unit 6, so as to be flattened by successive rolling. At the same time, a first detection unit 7 is provided on the adjacent side of the first clamping unit 4, and a second clamping unit 5 is provided. A second detection unit 8 is provided on the adjacent side. The first detection unit 7 and the second detection unit 8 can use existing visual detection equipment on the market, such as cameras, to obtain surface image information of the aluminum foil material 31 being conveyed, so as to judge common defects such as holes, cracks, wrinkles, bulges, scratches, insect spots, yellow spots, black spots, horizontal lines, etc. on the surface of the aluminum foil material 31. When the second detection unit 8 and the first detection unit 7 detect defects at the same position, based on a stable conveying speed, the first detection unit 7 generally detects the defects first. After a certain time interval, the second detection unit 8 detects the defects at the same position. At this time, the second clamping unit 5 is triggered to clamp off the aluminum foil material 31 to avoid continuing to convey it into the clamping discharging unit 6 and discharging it to subsequent processing steps. If only the first detection unit 7 or only the second detection unit 8 detects the defects, it means that a misjudgment is likely to occur, thereby effectively avoiding misjudgment during detection. Defects generally appear on a length of the aluminum foil material 31. Until the first detection unit 7 does not detect the defects, the first clamping unit 4 is triggered to clamp off the aluminum foil material 31 to remove the defective aluminum foil material The two ends of 31 are cut off and abandoned together, and the turntable 2 is triggered to rotate, so that the end of the aluminum foil material 31 on the first clamping unit 4 is directly turned to the clamping and discharging unit 6, so as to discharge the material toward the clamping and discharging unit 6, so as to quickly and efficiently introduce the normal aluminum foil material 31 into the clamping and discharging unit 6, so as to connect to the subsequent processing steps, which is beneficial to the overall continuous processing operation and avoids unnecessary processing interruption or waste of processing materials. As the turntable 2 rotates and resets again, the aluminum foil material 31 re-enters the second clamping unit 5 for roller transmission, and continues to be detected and transmitted in real time.

[0035] In an embodiment of the present invention, Figure 1 As shown, a material guide roller 9 is provided between the first clamping unit 4 and the barrel 3 for rotating and guiding the material.

[0036] In an embodiment of the present invention, Figure 1 As shown, the clamping and discharging unit 6 includes discharging rollers 61 arranged opposite to each other. The discharging rollers 61 rotate relatively to each other so as to firmly clamp the aluminum foil material 31 and convey the material to the subsequent processing steps.

[0037] In an embodiment of the present invention, Figure 1 As shown, an air duct 10 is provided at the bottom end adjacent to the clamping and discharging unit 6 for blowing air toward the aluminum foil 31 to guide the aluminum foil 31 to be transported into the clamping and discharging unit 6 for discharging.

[0038] In an embodiment of the present invention, Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 As shown, the first clamping unit 4 includes a first clamping roller 41 rotatably connected to the turntable 2, and a first fixed frame 42 fixed on the turntable 2, the first fixed frame 42 is rotatably connected to a first roller frame 43, the first roller frame 43 is rotatably connected to a first resisting roller 44, and a first elastic member is provided at the rotational connection between the first roller frame 43 and the first fixed frame 42. Specifically, the first elastic member can adopt a torsion spring to drive the first resisting roller 44 to elastically press against the first clamping roller 41 for rotation and clamping, and at the same time play a rolling and flattening effect. A first roller cutter 45 is provided on the outer end of the first clamping roller 41. Specifically, one end of the first clamping roller 41 is connected to an existing power device such as a motor or a rotating cylinder to drive the first clamping roller 41 to rotate axially. When the first roller cutter 45 turns to press against the first resisting roller 44, it is used to clamp off the aluminum foil material 31.

[0039] In an embodiment of the present invention, Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 As shown, the second clamping and conveying unit 5 includes a second clamping roller 51 rotatably connected to the turntable 2, and a second fixed frame 52 fixed on the detection table 1, the second fixed frame 52 is rotatably connected to a second roller frame 53, the second roller frame 53 is rotatably connected to a second resisting roller 54, and a second elastic member is provided at the rotational connection between the second roller frame 53 and the second fixed frame 52. Specifically, the second elastic member can be a torsion spring to drive the second resisting roller 54 to elastically press against the second clamping roller 51 for rotation and clamping, and at the same time have the effect of rolling and flattening. A second roller cutter 55 is provided on the outer end of the second clamping roller 51. Specifically, one end of the second clamping roller 51 is connected to an existing power device such as a motor or a rotating cylinder to drive the second clamping roller 51 to rotate axially. When the second roller cutter 55 turns to press against the second resisting roller 54, it is used to clamp off the aluminum foil material 31.

[0040] Among them, Figure 6As shown, the detection table 1 is also fixed with existing power equipment such as a motor or a rotating cylinder, which is used to connect and drive the turntable 2 to rotate axially. The power equipment used to drive the first clamping roller 41, the second clamping roller 51, and the turntable 2 to rotate are all electrically connected to the second detection part 8 and the first detection part 7. When the second detection part 8 and the first detection part 7 detect defects at the same position, the second clamping roller 51 is triggered to rotate in the opposite direction of the conveying direction to clamp off one end of the aluminum foil material 31. When the first detection part 7 does not detect defects, the first clamping roller 41 is triggered to rotate in the forward direction of the conveying direction to clamp off the other end of the aluminum foil material 31, and the aluminum foil material 31 with defects is cut off. The turntable 2 is triggered to rotate so that the first clamping roller 41 turns to approach the clamping and discharging unit 6, and the second clamping roller 51 turns away from the second fixed frame 52 and the second abutting roller 54. The aluminum foil material 31 clamped by the first clamping roller 41 moves toward the clamping and discharging unit 6, and is reset along the conveying direction with the rotation of the first clamping roller 41, which just drives the aluminum foil material 31 to be conveyed into the clamping and discharging unit 6 for further conveying. At the same time, the air duct 10 plays a role in further blowing guidance. As the turntable 2 rotates and resets, the conveyed aluminum foil material 31 is attached to the second clamping roller 51 again, and the second clamping roller 51 turns to the second abutting roller 54 again to abut, so as to detect the conveyed aluminum foil material 31 normally.

[0041] In an embodiment of the present invention, Figure 1 As shown, an alarm 11 is provided on the turntable 2 at a side adjacent to the first detection part 7. Specifically, the alarm 11 can adopt an existing sound and light alarm. When the first detection part 7 detects a defect in the aluminum foil material 31, the alarm 11 is triggered to sound and light alarm. If the second detection part 8 does not detect a defect in the same position, the alarm 11 is triggered to restore and reset.

[0042] The present invention also provides an aluminum foil defect detection method, comprising the following steps:

[0043] a: The aluminum foil material 31 is unrolled by the barrel 3, and then is rolled and flattened by the first clamping unit 4 and the second clamping unit 5, and then is clamped and discharged by the clamping and discharging unit 6;

[0044] b: During the conveyance of the aluminum foil 31, the surface defects are detected by the first detection unit 7 adjacent to the first pinching and conveying unit 4 and the second detection unit 8 adjacent to the second pinching and conveying unit 5 in sequence;

[0045] c: When the second detection unit 8 and the first detection unit 7 detect defects at the same position, the second clamping unit 5 is triggered to clamp off the aluminum foil 31. When the first detection unit 7 detects no defects, the first clamping unit 4 is triggered to clamp off the aluminum foil 31, and the turntable 2 is triggered to rotate so that the aluminum foil 31 on the first clamping unit 4 is discharged toward the clamping and discharging unit 6.

[0046] It also includes d: after the aluminum foil material 31 on the first clamping unit 4 enters the clamping discharging unit 6 for discharging, the turntable 2 rotates and resets, and the aluminum foil material 31 re-enters the second clamping unit 5 for roller conveying, so as to normally detect and convey the aluminum foil material 31.

[0047] In step b, when the first detection unit 7 detects a defect in the aluminum foil 31, an alarm is triggered to alert the operator. If the second detection unit 8 does not detect a defect in the same position, the alarm 11 is triggered to be restored and reset to eliminate the false alarm.

[0048] In an aluminum foil defect detection device disclosed in the present invention, when in use, by rotating a turntable 2 connected to a detection table 1, a barrel 3 is rotatably connected to the turntable 2, a first clamping unit 4 and a second clamping unit 5 are provided on the turntable 2, and a clamping discharging unit 6 is provided on one side outside the turntable 2. The aluminum foil material 31 is unrolled by the barrel 3, and then is rolled and flattened by the first clamping unit 4 and the second clamping unit 5 in turn, and then is clamped and discharged by the clamping discharging unit 6. During the transmission, the aluminum foil material 31 passes through the first detection part 7 adjacent to the first clamping unit 4 and the second detection part adjacent to the second clamping unit 5 in turn. The second detection unit 8 detects surface defects. When the second detection unit 8 and the first detection unit 7 detect defects at the same position, the second clamping unit 5 is triggered to clamp off the aluminum foil 31. When the first detection unit 7 detects no defects, the first clamping unit 4 is triggered to clamp off the aluminum foil 31, and the turntable 2 is triggered to rotate so that the aluminum foil 31 on the first clamping unit 4 is discharged toward the clamping and discharging unit 6. After the aluminum foil 31 on the first clamping unit 4 enters the clamping and discharging unit 6 for discharge, the turntable 2 rotates and resets, and the aluminum foil 31 re-enters the second clamping unit 5 for roller conveying, so as to normally detect and convey the aluminum foil 31.

[0049] Those skilled in the art should understand that the discussion of any of the above embodiments is merely illustrative and is not intended to imply that the scope of the present invention (including the claims) is limited to these examples. Under the concept of the present invention, the technical features in the above embodiments or different embodiments may be combined, the steps may be implemented in any order, and there are many other variations of the different aspects of the present invention as described above, which are not provided in detail for the sake of simplicity.

[0050] The present invention is intended to cover all such substitutions, modifications and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. An aluminum foil defect detection device, comprising a detection platform (1), characterized in that: Also includes: A turntable (2) is rotatably connected to the detection platform (1), a barrel (3) is rotatably connected to the turntable (2), a first clamping unit (4) and a second clamping unit (5) are provided on the turntable (2), a clamping and discharging unit (6) is provided on one side outside the turntable (2), an aluminum foil material (31) is wound on the barrel (3), the aluminum foil material (31) is unwound and sequentially rolled and conveyed by the first clamping unit (4) and the second clamping unit (5), and then clamped and discharged by the clamping and discharging unit (6); A first detection unit (7), arranged adjacent to the first pinching unit (4), and used for detecting surface defects of the aluminum foil material (31); a second detection unit (8) disposed adjacent to the second pinching unit (5) and used to detect surface defects of the aluminum foil material (31); when the second detection unit (8) and the first detection unit (7) detect defects at the same position, the second pinching unit (5) is triggered to pinch off the aluminum foil material (31); until the first detection unit (7) detects no defects, the first pinching unit (4) is triggered to pinch off the aluminum foil material (31), and the turntable (2) is triggered to rotate, so that the aluminum foil material (31) on the first pinching unit (4) is discharged toward the pinching discharge unit (6); The first clamping and conveying unit (4) comprises a first clamping roller (41) rotatably connected to the rotating disk (2), and a first fixed frame (42) fixed to the rotating disk (2); a first roller frame (43) rotatably connected to the first fixed frame (42); a first resisting roller (44) rotatably connected to the first roller frame (43); a first elastic member is provided at the rotatable connection between the first roller frame (43) and the first fixed frame (42) to drive the first resisting roller (44) to elastically abut against the first clamping roller (41) for rotational clamping and conveying; a first roller cutter (45) is provided on the outer end of the first clamping roller (41); when the first roller cutter (45) turns to abut against the first resisting roller (44), it is used to clamp and cut the aluminum foil material (31); The second clamping and conveying unit (5) comprises a second clamping roller (51) rotatably connected to the turntable (2), and a second fixed frame (52) fixed to the detection platform (1); the second fixed frame (52) is rotatably connected to a second roller frame (53); the second roller frame (53) is rotatably connected to a second resisting roller (54); a second elastic member is provided at the rotatable connection between the second roller frame (53) and the second fixed frame (52) to drive the second resisting roller (54) to elastically press against the second clamping roller (51) for rotational clamping and conveying; a second roller cutter (55) is provided on the outer end of the second clamping roller (51); when the second roller cutter (55) turns to press against the second resisting roller (54), it is used to clamp and cut the aluminum foil material (31).

2. The aluminum foil defect detection device according to claim 1, characterized in that: A material guide roller (9) is provided between the first clamping unit (4) and the barrel (3) for rotating and guiding the material.

3. The aluminum foil defect detection device according to claim 1, characterized in that: The clamping and discharging unit (6) comprises discharging rollers (61) arranged opposite to each other. The discharging rollers (61) rotate relative to each other to clamp the aluminum foil material (31) and convey the discharging material.

4. The aluminum foil defect detection device according to claim 1, characterized in that: An air duct (10) is provided at the bottom end adjacent to the clamping and discharging unit (6) for blowing air toward the aluminum foil material (31).

5. The aluminum foil defect detection device according to claim 1, characterized in that: An alarm (11) is provided on the turntable (2) at a side adjacent to the first detection portion (7); when the first detection portion (7) detects a defect in the aluminum foil material (31), the alarm (11) is triggered to sound an alarm.

6. A method for detecting aluminum foil defects, the method using the aluminum foil defect detection device according to any one of claims 1 to 5 for detection, characterized in that: The steps include: a: The aluminum foil material (31) is unrolled by the material barrel (3) through rotation, and then is rolled and flattened and conveyed by the first clamping unit (4) and the second clamping unit (5) in sequence, and then is clamped and discharged by the clamping and discharging unit (6); b: During the conveyance of the aluminum foil material (31), the first detection unit (7) adjacent to the first pinching and conveying unit (4) and the second detection unit (8) adjacent to the second pinching and conveying unit (5) are sequentially used to detect surface defects; c: When the second detection unit (8) and the first detection unit (7) detect defects at the same position, the second clamping unit (5) is triggered to clamp off the aluminum foil (31), until the first detection unit (7) detects no defects, then the first clamping unit (4) is triggered to clamp off the aluminum foil (31), and the turntable (2) is triggered to rotate, so that the aluminum foil (31) on the first clamping unit (4) is discharged toward the clamping discharge unit (6).

7. The aluminum foil defect detection method according to claim 6, characterized in that: Also includes: d: After the aluminum foil material (31) on the first pinching and conveying unit (4) enters the pinching and conveying discharging unit (6) for discharging, the turntable (2) rotates and resets, and the aluminum foil material (31) re-enters the second pinching and conveying unit (5) for roller conveying.

8. The aluminum foil defect detection method according to claim 6, characterized in that: In step b, when the first detection unit (7) detects a defect in the aluminum foil material (31), an alarm is triggered.

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