PVB film defect detection equipment

Abstract

The utility model relates to the technical field of PVB (Polyvinyl Butyral) film defect detection, in particular to PVB film defect detection equipment which is convenient for quickly changing a roll of a PVB film, improves the detection efficiency, is convenient for reminding an operator to change the roll and improves the practicability. Comprising a detection mechanism; the marking mechanism is installed on the side wall of the detection mechanism, the roll changing mechanism is installed at the top end of the detection mechanism, the unwinding mechanism is installed on the roll changing mechanism, the alarm mechanism is installed at the top end of the detection mechanism, and the winding mechanism is installed at the top end of the detection mechanism; the detection mechanism is used for detecting flaws of the PVB film, the marking mechanism is used for marking the detected flaws conveniently, the roll changing mechanism is used for quickly changing rolls of the unwinding mechanism conveniently, the unwinding mechanism is used for quickly mounting the PVB film conveniently, the alarm mechanism is used for alarming whether one roll of the PVB film is detected completely, and the winding mechanism is used for winding the PVB film conveniently.

Description

Technical Field

[0001] The utility model relates to the technical field of PVB film defect detection, in particular to a PVB film defect detection device. Background Art

[0002] PVB film is a commonly used intermediate film material, the full name of which is polyvinyl butyral film, which is a plastic resin film made of polyvinyl alcohol and butene. It has good transparency, heat resistance, cold resistance and high mechanical strength, so it is widely used in the construction and automotive industries. As an excellent adhesive material for making laminated glass, in the production process of PVB film, it is necessary to detect the defects of PVB film to improve the quality of PVB film.

[0003] In the existing PVB film defect detection technology, for example, the prior art with application number CN202223590904.3, it includes a detection table, a conveying mechanism, an optical defect detection device, a PVB film body, a mounting groove, a first cylinder, a second cylinder, a connecting block, a connecting tube, a fixing rod, a marking pen, a locking ring and a fixing hole. A marking pen is provided, and the marking pen is installed on a power component through a connecting component. When a defect is detected on the PVB film body, the conveying mechanism stops. Under the action of two sets of power components, the marking pen draws two lines on the PVB film body, thereby automatically marking the defective area.

[0004] After a roll of PVB film is inspected, the prior art is not convenient for reminding the operator to come and change the roll, and changing the roll is relatively cumbersome, resulting in low inspection efficiency. In addition, the prior art is not convenient for marking the specific location of the defects at the inspection site of the PVB film, which reduces its practicality. Utility Model Content

[0005] In order to solve the above technical problems, the utility model provides a PVB film defect detection device which is convenient for quickly changing the roll of PVB film, improves the detection efficiency, and is convenient for reminding the operator to change the roll, thereby improving the practicality.

[0006] The utility model discloses a PVB film defect detection device, comprising a detection mechanism; further comprising a marking mechanism, a roll-changing mechanism, an unwinding mechanism, an alarm mechanism and a rewinding mechanism, wherein the marking mechanism is mounted on a side wall of the detection mechanism, the roll-changing mechanism is mounted on the top of the detection mechanism, the unwinding mechanism is mounted on the roll-changing mechanism, the alarm mechanism is mounted on the top of the detection mechanism, and the rewinding mechanism is mounted on the top of the detection mechanism; the detection mechanism is used to detect defects on the PVB film, the marking mechanism is convenient for marking detected defects, the roll-changing mechanism is convenient for quickly rewinding the unwinding mechanism, the unwinding mechanism is convenient for quickly installing the PVB film, the alarm mechanism alarms whether one roll of the PVB film is detected, and the rewinding mechanism is convenient for rewinding the PVB film; the detection mechanism is used to detect defects on the PVB film, the marking mechanism is convenient for marking detected defects, the roll-changing mechanism is convenient for quickly rewinding the unwinding mechanism, thereby improving detection efficiency, the unwinding mechanism is convenient for quickly installing the PVB film, the alarm mechanism alarms whether one roll of the PVB film is detected, and the rewinding mechanism is convenient for rewinding the PVB film.

[0007] Preferably, the detection mechanism includes a base plate and a checker, and the checker is installed on the top of the base plate; the defects of the PVB film can be easily detected by the checker.

[0008] Preferably, the marking mechanism includes a lead screw, a slider, a cylinder, a mounting plate, a turntable, a first motor, a marking pen and a second motor. A slide groove is provided on the inspector, and a mounting frame is installed on the inspector. The lead screw is rotatably installed on the mounting frame, the slider is slidably installed in the slide groove, the slider is threadedly matched with the lead screw, the cylinder is installed on the slider, the mounting plate is installed on the bottom end of the cylinder, the turntable is rotatably installed at the bottom end of the mounting plate, the first motor is installed on the top end of the mounting plate, the output end of the first motor is connected to the turntable, the marking pen is eccentrically installed at the bottom end of the turntable, the second motor is installed on the mounting frame, and the output end of the second motor is connected to the lead screw; when the inspector detects a defect, the lead screw is driven to rotate by turning on the second motor, and then the slider is driven to slide in the slide groove through the threaded relationship, and then the mounting plate is driven to descend by turning on the cylinder, and then the turntable is driven to rotate by turning on the first motor, and then the marking pen is driven to rotate eccentrically to mark the defect.

[0009] Preferably, the reel changing mechanism includes a reel changing rack, a reel changing disk, a drive box, a worm gear and a worm. The reel changing rack is installed on the top of the base plate, the reel changing disk is rotatably installed on the reel changing rack through a rotating shaft, the drive box is installed on the side wall of the reel changing rack, the worm gear is installed on the rotating shaft of the reel changing disk, and the worm is rotatably installed on the inner wall of the drive box, and the worm is meshed with the worm gear. When the unwinding mechanism needs to be changed, the worm gear is rotated, and then the reel changing disk is driven to rotate through the meshing relationship, which facilitates the replacement of the unwinding mechanism and improves efficiency.

[0010] Preferably, the unwinding mechanism includes a unwinding reel, a fixed plate, a sliding plate and a first spring, a mounting hole is provided on the reel changing disk, the unwinding reel is slidably installed in the mounting hole of the reel changing disk, the fixed plate is installed on the unwinding reel, the sliding plate is slidably installed on the unwinding reel, one end of the first spring is installed on the sliding plate, and the other end of the first spring is installed on the fixed plate; when the unwinding reel is to be replaced, the unwinding reel is pulled laterally so that the sliding plate and the reel changing disk are squeezed, so that the first spring contracts, so that the other end of the unwinding reel slides out of the reel changing disk, thereby facilitating the replacement of the unwinding reel and improving convenience.

[0011] Preferably, the alarm mechanism includes two first roller frames, two first rollers, a sliding sleeve, a sliding mounting plate, a second roller frame, a second roller, a second spring, a proximity switch and a buzzer, the two first roller frames are mounted on the top of the bottom plate, the two first rollers are rotatably mounted on the two first roller frames respectively, the sliding sleeve is mounted on the top of the bottom plate, the sliding mounting plate is slidably mounted in the sliding sleeve, the second roller frame is mounted on the top of the sliding mounting plate, the second roller frame is slidably mounted on the top surface of the sliding sleeve, the second roller is rotatably mounted on the second roller frame, one end of the second spring is mounted on the bottom end of the sliding mounting plate, and the other end of the second spring is mounted on the sliding sleeve. The inner bottom end of the sliding sleeve, the proximity switch is installed at the inner top end of the sliding sleeve, the buzzer is installed on the side wall of the sliding sleeve, and the two sets of first roller frames and the first roller are respectively installed on both sides of the sliding sleeve; the PVB film is passed through the bottom ends of the two first rollers and the top end of the second roller, and then the second roller is squeezed by the PVB film. When the PVB film needs to be reeled, since the PVB film is no longer squeezed with the second roller, the elasticity of the second spring pushes the sliding mounting plate to slide in the sliding sleeve, so that the sliding mounting plate is close to the proximity switch, and the proximity switch controls the buzzer alarm to remind the operator to come to change the roll.

[0012] Preferably, the winding mechanism includes a winding frame, a winding roller and a winding motor, the winding frame is installed on the top of the base plate, the winding roller is rotatably installed on the winding frame, the winding motor is installed on the side wall of the winding frame, and the output end of the winding motor is connected to the winding roller; the winding roller is driven to rotate by turning on the winding motor, and the PVB film is wound by the rotation of the winding roller.

[0013] Compared with the prior art, the utility model has the following beneficial effects: the defect detection of PVB film is performed through the detection mechanism, the marking mechanism is convenient for marking the detected defects, the roll changing mechanism is convenient for quickly changing the roll of the unwinding mechanism, thereby improving the detection efficiency, the unwinding mechanism is convenient for quickly installing the PVB film, the alarm mechanism alarms whether a roll of PVB film has been detected, and the rewinding mechanism is convenient for rewinding the PVB film. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a first axonometric structural schematic diagram of the utility model;

[0015] Figure 2 It is a second axonometric structural schematic diagram of the utility model;

[0016] Figure 3 It is a third axonometric structural schematic diagram of the utility model;

[0017] Figure 4 It is a front cross-sectional structural schematic diagram of the utility model;

[0018] Figure 5 It is a side cross-sectional structural schematic diagram of the utility model;

[0019] Markings in the accompanying drawings: 01, detection mechanism; 11, base plate; 12, inspector; 02, marking mechanism; 21, lead screw; 22, slider; 23, cylinder; 24, mounting plate; 25, turntable; 26, first motor; 27, marking pen; 28, second motor; 03, roll changing mechanism; 31, roll changing frame; 32, roll changing disk; 33, drive box; 34, worm gear; 35, worm; 04, unwinding mechanism; 41, unwinding roll; 42, fixed plate; 43, sliding plate; 44, first spring; 05, alarm mechanism; 51, first roller frame; 52, first roller; 53, sliding sleeve; 54, sliding mounting plate; 55, second roller frame; 56, second roller; 57, second spring; 58, proximity switch; 59, buzzer; 06, winding mechanism; 61, winding frame; 62, winding roller; 63, winding motor. DETAILED DESCRIPTION

[0020] In order to facilitate the understanding of the utility model, the utility model will be described more comprehensively below with reference to the relevant drawings. The utility model can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the utility model more thorough and comprehensive.

[0021] Example 1

[0022] like Figures 1 to 4 As shown, it includes a detection mechanism 01, a marking mechanism 02, a roll-changing mechanism 03, an unwinding mechanism 04, an alarm mechanism 05 and a rewinding mechanism 06, wherein the marking mechanism 02 is mounted on the side wall of the detection mechanism 01, the reel-changing mechanism 03 is mounted on the top of the detection mechanism 01, the unwinding mechanism 04 is mounted on the reel-changing mechanism 03, the alarm mechanism 05 is mounted on the top of the detection mechanism 01, and the rewinding mechanism 06 is mounted on the top of the detection mechanism 01;

[0023] The PVB film is inspected for defects by the inspection mechanism 01, the marking mechanism 02 is convenient for marking the detected defects, the roll changing mechanism 03 is convenient for quickly changing the rolls of the unwinding mechanism 04, the unwinding mechanism 04 is convenient for quickly installing the PVB film, the alarm mechanism 05 alarms whether the PVB film has been inspected for one roll, and the rewinding mechanism 06 is convenient for rewinding the PVB film;

[0024] The detection mechanism 01 includes a base plate 11 and an inspector 12, and the inspector 12 is installed on the top of the base plate 11;

[0025] The marking mechanism 02 includes a lead screw 21, a slider 22, a cylinder 23, a mounting plate 24, a turntable 25, a first motor 26, a marking pen 27 and a second motor 28. A slide groove is provided on the inspector 12, a mounting frame is installed on the inspector 12, the lead screw 21 is rotatably installed on the mounting frame, the slider 22 is slidably installed in the slide groove, the slider 22 is threadedly matched with the lead screw 21, the cylinder 23 is installed on the slider 22, the mounting plate 24 is installed at the bottom end of the cylinder 23, the turntable 25 is rotatably installed at the bottom end of the mounting plate 24, the first motor 26 is installed at the top end of the mounting plate 24, the output end of the first motor 26 is connected to the turntable 25, the marking pen 27 is eccentrically installed at the bottom end of the turntable 25, the second motor 28 is installed on the mounting frame, and the output end of the second motor 28 is connected to the lead screw 21;

[0026] The roll changing mechanism 03 includes a roll changing frame 31, a roll changing disk 32, a driving box 33, a worm gear 34 and a worm 35. The roll changing frame 31 is mounted on the top of the bottom plate 11, the roll changing disk 32 is rotatably mounted on the roll changing frame 31 through a rotating shaft, the driving box 33 is mounted on the side wall of the roll changing frame 31, the worm gear 34 is mounted on the rotating shaft of the roll changing disk 32, and the worm 35 is rotatably mounted on the inner wall of the driving box 33, and the worm 35 is meshed with the worm gear 34.

[0027] The unwinding mechanism 04 includes an unwinding roll 41, a fixed plate 42, a sliding plate 43 and a first spring 44. A mounting hole is provided on the reel changing disk 32. The unwinding roll 41 is slidably mounted in the mounting hole of the reel changing disk 32. The fixed plate 42 is mounted on the unwinding roll 41. The sliding plate 43 is slidably mounted on the unwinding roll 41. One end of the first spring 44 is mounted on the sliding plate 43, and the other end of the first spring 44 is mounted on the fixed plate 42.

[0028] The inspector 12 is used to detect defects of the PVB film. When the inspector 12 detects defects, the second motor 28 is turned on to drive the lead screw 21 to rotate, and then the slider 22 is driven to slide in the slide groove through the thread relationship, and then the mounting plate 24 is driven to descend by turning on the cylinder 23, and then the turntable 25 is driven to rotate by turning on the first motor 26, and then the marking pen 27 is driven to rotate eccentrically to mark the defect. When the unwinding roll 41 is to be replaced, the worm 35 is rotated, and then the meshing relationship is It drives the reel changing disk 32 to rotate, thereby facilitating the replacement of the unwinding mechanism 04 and improving efficiency. When the unwinding roll 41 needs to be replaced, the unwinding roll 41 is pulled laterally so that the sliding plate 43 is squeezed with the reel changing disk 32, thereby contracting the first spring 44, so that the other end of the unwinding roll 41 slides out from the reel changing disk 32, thereby facilitating the replacement of the unwinding roll 41 and improving convenience. The alarm mechanism 05 alarms whether a roll of PVB film has been detected, and the winding mechanism 06 facilitates the winding of the PVB film.

[0029] Example 2

[0030] like Figure 2 , Figure 3 and Figure 5 As shown, it includes a detection mechanism 01, a marking mechanism 02, a roll-changing mechanism 03, an unwinding mechanism 04, an alarm mechanism 05 and a rewinding mechanism 06, wherein the marking mechanism 02 is mounted on the side wall of the detection mechanism 01, the reel-changing mechanism 03 is mounted on the top of the detection mechanism 01, the unwinding mechanism 04 is mounted on the reel-changing mechanism 03, the alarm mechanism 05 is mounted on the top of the detection mechanism 01, and the rewinding mechanism 06 is mounted on the top of the detection mechanism 01;

[0031] The PVB film is inspected for defects by the inspection mechanism 01, the marking mechanism 02 is convenient for marking the detected defects, the roll changing mechanism 03 is convenient for quickly changing the rolls of the unwinding mechanism 04, the unwinding mechanism 04 is convenient for quickly installing the PVB film, the alarm mechanism 05 alarms whether the PVB film has been inspected for one roll, and the rewinding mechanism 06 is convenient for rewinding the PVB film;

[0032] The alarm mechanism 05 includes two first roller frames 51, two first rollers 52, a sliding sleeve 53, a sliding mounting plate 54, a second roller frame 55, a second roller 56, a second spring 57, a proximity switch 58 and a buzzer 59. The two first roller frames 51 are mounted on the top of the bottom plate 11, the two first rollers 52 are rotatably mounted on the two first roller frames 51, the sliding sleeve 53 is mounted on the top of the bottom plate 11, the sliding mounting plate 54 is slidably mounted in the sliding sleeve 53, the second roller frame 55 is mounted on the top of the sliding mounting plate 54, the second roller frame 55 is slidably mounted on the top surface of the sliding sleeve 53, the second roller 56 is rotatably mounted on the second roller frame 55, one end of the second spring 57 is mounted on the bottom end of the sliding mounting plate 54, the other end of the second spring 57 is mounted on the inner bottom end of the sliding sleeve 53, the proximity switch 58 is mounted on the inner top end of the sliding sleeve 53, the buzzer 59 is mounted on the side wall of the sliding sleeve 53, and the two groups of first roller frames 51 and first rollers 52 are respectively mounted on both sides of the sliding sleeve 53;

[0033] The winding mechanism 06 includes a winding frame 61, a winding roller 62 and a winding motor 63. The winding frame 61 is mounted on the top of the bottom plate 11, the winding roller 62 is rotatably mounted on the winding frame 61, the winding motor 63 is mounted on the side wall of the winding frame 61, and the output end of the winding motor 63 is connected to the winding roller 62;

[0034] The PVB film is inspected for defects by the inspection mechanism 01, the marking mechanism 02 is convenient for marking the detected defects, the roll-changing mechanism 03 is convenient for quickly changing the rolls of the unwinding mechanism 04, so as to improve the inspection efficiency, and the unwinding mechanism 04 is convenient for quickly installing the PVB film, by passing the PVB film through the bottom ends of the two first rollers 52 and the top end of the second roller 56, and then squeezing the second roller 56 through the PVB film. When the PVB film needs to be rewound, since the PVB film is no longer squeezed by the second roller 56, the elasticity of the second spring 57 pushes the sliding mounting plate 54 to slide in the sliding sleeve 53, so that the sliding mounting plate 54 is close to the proximity switch 58, so that the proximity switch 58 controls the buzzer 59 to alarm and remind the operator to come to change the roll, and the rewinding motor 63 is turned on to drive the rewinding roller 62 to rotate, and the PVB film is rewound by the rotation of the rewinding roller 62.

[0035] like Figures 1 to 5As shown, the utility model is a PVB film defect detection device, which, when working, is convenient for detecting defects of the PVB film through the inspector 12. When the inspector 12 detects the defect, the second motor 28 is turned on to drive the lead screw 21 to rotate, and then the slider 22 is driven to slide in the slide groove through the threaded relationship, and then the mounting plate 24 is driven to descend by turning on the cylinder 23, and then the turntable 25 is driven to rotate by turning on the first motor 26, and then the marking pen 27 is driven to rotate eccentrically to mark the defect. When the unwinding roll 41 is to be replaced, the worm 35 is rotated, and then the reel changing disk 32 is driven to rotate through the meshing relationship, so as to facilitate the replacement of the unwinding mechanism 04 and improve efficiency. When the unwinding roll 41 is to be replaced, the unwinding roll 41 is pulled horizontally so that the sliding plate 43 and The reel-changing disc 32 is squeezed, so that the first spring 44 contracts, so that the other end of the unwinding roll 41 slides out from the reel-changing disc 32, so that it is easy to replace the unwinding roll 41, and the convenience is improved. The PVB film is passed through the bottom ends of the two first rollers 52 and the top end of the second roller 56, and then the second roller 56 is squeezed by the PVB film. When the PVB film needs to be rewound, since the PVB film is no longer squeezed by the second roller 56, the elasticity of the second spring 57 pushes the sliding mounting plate 54 to slide in the sliding sleeve 53, so that the sliding mounting plate 54 is close to the proximity switch 58, so that the proximity switch 58 controls the buzzer 59 to alarm and remind the operator to come to change the roll, and the winding motor 63 is turned on to drive the winding roller 62 to rotate, and the PVB film is rewound by the rotation of the winding roller 62.

[0036] The inspector 12, cylinder 23, first motor 26, second motor 28, proximity switch 58, buzzer 59 and winding motor 63 of the utility model are purchased on the market, and technicians in the industry only need to install and operate them according to the accompanying instruction manual, without the need for creative work by technicians in this field.

[0037] The main functions realized by the utility model are: in the process of PVB film defect detection, it is convenient to quickly change the PVB film roll, thereby improving the detection efficiency, and it is convenient to remind the operator to come and change the roll, thereby improving the practicality.

[0038] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principle of the present invention. These improvements and modifications should also be regarded as the protection scope of the present invention.

Claims

1. A PVB film defect detection device, comprising a detection mechanism (01); characterized in that: It also includes a marking mechanism (02), a roll-changing mechanism (03), an unwinding mechanism (04), an alarm mechanism (05) and a rewinding mechanism (06), wherein the marking mechanism (02) is mounted on the side wall of the detection mechanism (01), the roll-changing mechanism (03) is mounted on the top of the detection mechanism (01), the unwinding mechanism (04) is mounted on the roll-changing mechanism (03), the alarm mechanism (05) is mounted on the top of the detection mechanism (01), and the rewinding mechanism (06) is mounted on the top of the detection mechanism (01); The detection mechanism (01) detects defects on the PVB film, the marking mechanism (02) facilitates marking the detected defects, the roll changing mechanism (03) facilitates rapid roll changing of the unwinding mechanism (04), the unwinding mechanism (04) facilitates rapid installation of the PVB film, the alarm mechanism (05) alarms whether a roll of the PVB film has been detected, and the rewinding mechanism (06) facilitates rewinding of the PVB film.

2. A PVB film defect detection device as claimed in claim 1, characterized in that: The detection mechanism (01) comprises a base plate (11) and a checker (12), wherein the checker (12) is mounted on the top of the base plate (11).

3. A PVB film defect detection device as claimed in claim 2, characterized in that: The marking mechanism (02) comprises a lead screw (21), a slider (22), a cylinder (23), a mounting plate (24), a turntable (25), a first motor (26), a marking pen (27) and a second motor (28). The inspector (12) is provided with a slide groove, a mounting frame is mounted on the inspector (12), the lead screw (21) is rotatably mounted on the mounting frame, the slider (22) is slidably mounted in the slide groove, the slider (22) is threadedly matched with the lead screw (21), and the cylinder (23) The utility model is mounted on the slider (22), the mounting plate (24) is mounted on the bottom end of the cylinder (23), the turntable (25) is rotatably mounted on the bottom end of the mounting plate (24), the first motor (26) is mounted on the top end of the mounting plate (24), the output end of the first motor (26) is connected to the turntable (25), the marking pen (27) is eccentrically mounted on the bottom end of the turntable (25), the second motor (28) is mounted on the mounting frame, and the output end of the second motor (28) is connected to the lead screw (21).

4. A PVB film defect detection device as claimed in claim 2, characterized in that: The roll changing mechanism (03) comprises a roll changing frame (31), a roll changing disk (32), a driving box (33), a worm gear (34) and a worm (35). The roll changing frame (31) is mounted on the top of the bottom plate (11). The roll changing disk (32) is rotatably mounted on the roll changing frame (31) via a rotating shaft. The driving box (33) is mounted on the side wall of the roll changing frame (31). The worm gear (34) is mounted on the rotating shaft of the roll changing disk (32). The worm (35) is rotatably mounted on the inner wall of the driving box (33). The worm (35) is meshed with the worm gear (34).

5. A PVB film defect detection device as claimed in claim 4, characterized in that: The unwinding mechanism (04) comprises an unwinding reel (41), a fixed plate (42), a sliding plate (43) and a first spring (44); a mounting hole is provided on the reel changing disk (32); the unwinding reel (41) is slidably mounted in the mounting hole of the reel changing disk (32); the fixed plate (42) is mounted on the unwinding reel (41); the sliding plate (43) is slidably mounted on the unwinding reel (41); one end of the first spring (44) is mounted on the sliding plate (43); and the other end of the first spring (44) is mounted on the fixed plate (42).

6. A PVB film defect detection device as claimed in claim 2, characterized in that: The alarm mechanism (05) comprises two first roller frames (51), two first rollers (52), a sliding sleeve (53), a sliding mounting plate (54), a second roller frame (55), a second roller (56), a second spring (57), a proximity switch (58) and a buzzer (59). The two first roller frames (51) are mounted on the top of the bottom plate (11), the two first rollers (52) are rotatably mounted on the two first roller frames (51), the sliding sleeve (53) is mounted on the top of the bottom plate (11), the sliding mounting plate (54) is slidably mounted in the sliding sleeve (53), and the second roller frame (55) is mounted on the sliding mounting plate (54). The sliding sleeve (53) is a sliding sleeve (53) and a second roller frame (55) is slidably mounted on the top of the sliding mounting plate (54). The second roller (56) is rotatably mounted on the second roller frame (55). One end of the second spring (57) is mounted on the bottom end of the sliding mounting plate (54). The other end of the second spring (57) is mounted on the bottom end of the interior of the sliding sleeve (53). The proximity switch (58) is mounted on the top end of the interior of the sliding sleeve (53). The buzzer (59) is mounted on the side wall of the sliding sleeve (53). Two sets of first roller frames (51) and first rollers (52) are respectively mounted on both sides of the sliding sleeve (53).

7. A PVB film defect detection device as claimed in claim 2, characterized in that: The winding mechanism (06) comprises a winding frame (61), a winding roller (62) and a winding motor (63); the winding frame (61) is mounted on the top of the bottom plate (11); the winding roller (62) is rotatably mounted on the winding frame (61); the winding motor (63) is mounted on the side wall of the winding frame (61); and the output end of the winding motor (63) is connected to the winding roller (62).

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