A device and method for detecting defects in lightweight fiber cloth for new energy vehicles

Abstract

The present invention relates to the technical field of textile fabric defect detection, and in particular to a device and method for detecting defects in lightweight fiber fabrics for new energy vehicles. The device comprises a base, on which two groups of unwinding racks are provided, and an unwinding roller is rotatably connected between the two groups of unwinding racks, on which the textile fabric to be detected is wound; an image acquisition mechanism is used to simultaneously photograph the front and back sides of the textile fabric, and two groups of first electric push rods are used to drive the image acquisition mechanism to move horizontally on two groups of limit plates, performing full-segment scanning image acquisition on the textile fabric on the detection table, and transmitting the generated scanned image to a display for defect analysis. The device performs defect detection on the textile fabric by positioning and conveying and simultaneously performing full-segment image acquisition on both sides, which greatly improves detection efficiency and reduces the workload of workers.

Description

Technical Field

[0001] The present invention belongs to the technical field of textile fabric defect detection, and in particular relates to a device and method for detecting defects in lightweight fiber fabrics for new energy vehicles. Background Art

[0002] With the global emphasis on environmental protection and sustainable development, the demand for lightweight fiber textile fabrics in the fields of aerospace, automobiles, sporting goods, etc. is growing. Lightweight fiber textile fabrics need to be inspected for defects during the production process. Traditional fabric defect detection devices can only detect defects on one side of the textile fabric at a time. When defect detection on the other side is required, the winding, conveying and inspection operations must be performed again, which makes the double-sided inspection of textile fabrics more cumbersome and greatly affects the inspection efficiency.

[0003] After searching, in the prior art, the authorized patent document with the authorization announcement number: CN216594832U and the announcement date: 2022.05.24 discloses a multi-angle fabric defect detection mechanism, which belongs to the field of weaving. The mechanism comprises a base plate, a mounting portion is provided on the base plate, a support plate is provided above the mounting portion, a rotating shaft is fixedly provided on the lower surface of the support plate, a mounting seat is provided on the upper surface of the mounting portion corresponding to the rotating shaft, the rotating shaft is pivotally connected to the mounting seat, a telescopic rod is further provided between the support plate and the mounting portion, and the two ends of the telescopic rod are respectively pivotally connected to the support plate and the mounting portion; a receiving groove is further provided on opposite sides of the lower surface of the support plate, a fixing strip is embedded in the receiving groove, and the cross-section of the fixing strip is trapezoidal, and one end of the fixing strip is connected to the end of the receiving groove. The present application can conveniently adjust the detection angle.

[0004] However, the device still has the following defects: although the detection angle can be easily adjusted, the device can only detect defects on one side of the fabric at a time. When defects on the other side need to be detected, the winding, conveying and detection operations need to be performed again, which makes the double-sided detection of the fabric more cumbersome and greatly affects the detection efficiency. Summary of the Invention

[0005] To address the above problems, the present invention provides a device and method for detecting defects in lightweight fiber fabrics for new energy vehicles, comprising a base, two sets of unwinding racks being provided on the base, an unwinding roller being rotatably connected between the two sets of unwinding racks, and a textile fabric to be inspected being wound around the unwinding roller;

[0006] Two groups of winding frames are provided on the base, and a winding roller for winding and conveying textile fabrics is rotatably connected between the two groups of winding frames;

[0007] The base is provided with a detection platform for positioning the textile fabric, and the detection platform is arranged between the unwinding roller and the winding roller;

[0008] Two sets of limit plates are symmetrically installed on the inspection platform, and the two sets of limit plates are fixedly connected to extension plates, and the two sets of extension plates are fixedly connected to first electric push rods. The output ends of the two sets of first electric push rods are transmission-connected to image acquisition mechanisms for performing image acquisition and defect detection on textile fabrics;

[0009] Two groups of bidirectional screw rods are rotatably connected between the two groups of limit plates, and the two groups of bidirectional screw rods are both threadedly connected with a first material spreading mechanism and a second material spreading mechanism for tensioning, flattening and cleaning textile fabrics.

[0010] Furthermore, the image acquisition mechanism includes two groups of sliders, which are respectively fixedly connected to the output ends of the two groups of first electric push rods, and the opposite side walls of the two groups of sliders are fixedly connected to limit bolts.

[0011] Furthermore, the upper and lower side walls of the two groups of sliders are respectively fixedly connected with the first bracket and the second bracket, and the two groups of the first brackets and the two groups of the second brackets are fixedly connected with beams, and two groups of second electric push rods are installed on the two groups of beams, and the output ends of the two groups of the second electric push rods are transmission-connected with linkage plates, and scanning cameras are installed on the two groups of linkage plates, and the shooting ends of the two groups of scanning cameras are respectively facing the front and back sides of the textile fabric, and fill lights are provided on both sides of the scanning cameras.

[0012] Furthermore, two groups of arc-shaped material guide plates are fixedly connected between the two groups of limiting plates, and the two groups of arc-shaped material guide plates are distributed in a mirror image with the central axis of the limiting plate as the center. The two groups of arc-shaped material guide plates are movably fitted with the lower surface of the textile fabric. A positioning detection plate is fixedly connected between the two groups of arc-shaped material guide plates, and a detection slot is provided on the positioning detection plate. The image acquisition mechanism can capture images of the lower surface of the textile fabric through the detection slot.

[0013] Furthermore, the first material spreading mechanism and the second material spreading mechanism have the same structure and size, are symmetrically distributed with the central axis of the bidirectional screw as the center, and two groups of limiting shafts are fixedly connected between the two groups of limiting plates.

[0014] Furthermore, one group of the limit plates is fixedly connected to a mounting frame, a second motor is installed on the mounting frame, one group of the limit plates is rotatably connected to two groups of synchronous wheels, the center of one group of the synchronous wheels is transmission connected to the output end of the second motor, both groups of the synchronous wheels are sleeved with synchronous belts, and the centers of the two groups of the synchronous wheels are transmission connected to one end of two groups of bidirectional screw rods respectively.

[0015] Furthermore, the first material spreading mechanism includes an internal thread block and a linkage block, the internal thread block is threadedly connected to a group of bidirectional screw rods, and a through hole is opened on the linkage block, and the through hole is movably fitted with a group of limit shafts.

[0016] Furthermore, the linkage block and the internal thread block are fixedly connected with vertical plates, the top ends of the two groups of vertical plates are fixedly connected with horizontal plates, the horizontal plates are fixedly connected with a dust collection box, the bottom end of the dust collection box is connected with several groups of dust suction pipes, the bottom ends of several groups of dust suction pipes are fixedly connected with a dust collection hood after passing through the horizontal plates, a dust collection chamber is opened in the dust collection hood, the dust collection chamber is connected with several groups of dust collection pipes, and the air inlet end of the dust collection chamber faces the surface of the textile fabric.

[0017] Furthermore, a material spreading roller is fixedly connected between the internal thread block and the linkage block, and an inflation roller is sleeved on the material spreading roller. After the inflation roller is inflated, it fits into the surface of the textile fabric, and an air pressure sensor is installed inside the inflation roller. The inflation roller is connected to an inflation tube, and the inflation tube is connected to an exhaust pipe. A pressure relief valve is provided on the exhaust pipe. The air inlet end of the inflation tube is connected to an air guide bend, and the air inlet end of the air guide bend is connected to an air pump, and the air inlet end of the air pump is connected to an intake pipe, and the air inlet end of the intake pipe extends to the interior of the dust collecting box after passing through the horizontal plate, and the air inlet end of the intake pipe is provided with a filter.

[0018] A detection method for a lightweight fiber cloth defect detection device for new energy vehicles, the detection method comprising:

[0019] The textile fabric roll is placed on the unwinding roller, one end of the textile fabric passes through the testing table and is wound onto the winding roller, and the section of the textile fabric to be tested is conveyed to the testing table;

[0020] The two sets of first material spreading mechanisms and the two sets of second material spreading mechanisms are turned on to softly clamp the textile fabric and simultaneously pull the textile fabric in opposite directions, thereby tensioning and flattening the textile fabric to keep the surface of the textile fabric flat;

[0021] The two first electric push rods are turned on to drive the image acquisition mechanism to move horizontally on the two limit plates, and perform full-segment scanning image acquisition on the textile fabric on the testing table;

[0022] After image acquisition is completed, the image acquisition mechanism is driven to reset by the two sets of first electric push rods, and the first material spreading mechanism and the second material spreading mechanism no longer clamp the textile fabric, so that the textile fabric continues to be conveyed.

[0023] The beneficial effects of the present invention are:

[0024] 1. The unwinding roller and the rewinding roller are used to position and transport one end of the textile fabric to be inspected to the inspection table. The image acquisition mechanism simultaneously captures both the front and back sides of the textile fabric. The image acquisition mechanism is driven by two sets of first electric push rods to move horizontally on two sets of limit plates. Full-segment scanning image acquisition is performed on the textile fabric on the inspection table, and the generated scanned image is transmitted to the display for defect analysis. The device detects defects in textile fabrics by positioning and transporting and simultaneously capturing full-segment images of both the front and back sides, greatly improving inspection efficiency and reducing workers' workload.

[0025] 2. The second motor drives the two sets of synchronous wheels to rotate synchronously, so that the two sets of bidirectional screws rotate synchronously, so that the first material spreading mechanism and the second material spreading mechanism on one set of bidirectional screws move in opposite directions at the same time, spreading the textile fabric, so that the surface of the textile fabric to be photographed remains flat, and the accuracy of fabric detection is improved.

[0026] 3. Air is pumped into the inflation roller to expand the inflation roller and squeeze the textile fabric. The inflation rollers in the two sets of first material spreading mechanisms are respectively attached to the upper and lower end surfaces of the textile fabric and squeeze the textile fabric at the same time to achieve the effect of soft clamping of the textile fabric. The air pressure in the inflation roller is detected by the air pressure sensor. When the air pressure in the inflation roller is too high, the pressure relief valve is opened to allow the air to flow out through the exhaust pipe, thereby maintaining a stable air pressure in the inflation roller, thereby controlling the clamping force of the textile fabric. The two sets of second material spreading mechanisms also operate in the same way to achieve soft clamping of the textile fabric. By controlling the soft clamping force of the textile fabric, the traditional clamping method can be effectively avoided from causing damage to the textile fabric.

[0027] 4. Negative pressure is formed in the dust box through the air pump, and negative pressure is formed in the dust hood through the dust collection pipe connected to the dust collection box, so that impurities or dust attached to the surface of the textile fabric enter the dust collection chamber and finally enter the dust collection box for centralized treatment. By cleaning the surface of the textile fabric, the adhesion of impurities and dust can be effectively avoided to affect the results of defect detection. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following is a brief introduction to the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0029] Figure 1 A schematic diagram of the main structure of an embodiment of the present invention is shown;

[0030] Figure 2A schematic structural diagram of an image acquisition mechanism according to an embodiment of the present invention is shown;

[0031] Figure 3 It shows a schematic structural diagram of the main body from another angle according to an embodiment of the present invention;

[0032] Figure 4 A schematic structural diagram of a first material spreading mechanism and a second material spreading mechanism according to an embodiment of the present invention is shown;

[0033] Figure 5 It shows a schematic structural diagram of the main body from another angle according to an embodiment of the present invention;

[0034] Figure 6 It shows a schematic structural diagram of a first material spreading mechanism according to an embodiment of the present invention;

[0035] Figure 7 It shows an exploded schematic diagram of the structure of a first material spreading mechanism according to an embodiment of the present invention;

[0036] Figure 8 The embodiment of the present invention is shown Figure 7 Enlarged schematic diagram of point A in the middle.

[0037] In the figure: 1. Base; 2. Unwinding rack; 3. Unwinding roller; 4. Rewinding rack; 5. Rewinding roller; 6. First motor; 7. Inspection table; 8. Limit plate; 801. Limit slot; 9. Extension plate; 10. First electric push rod; 11. Image acquisition mechanism; 1101. Slider; 1102. Limit bolt; 1103. First bracket; 1104. Second bracket; 1105. Crossbeam; 1106. Second electric push rod; 1107. Linkage plate; 1108. Scanning camera; 1109. Fill light; 12. Arc guide plate; 13. Positioning detection plate; 1301. Inspection slot; 14. Two-way Screw rod; 15. Limiting shaft; 16. First material spreading mechanism; 1601. Internal thread block; 1602. Linkage block; 1603. Through hole; 1604. Vertical plate; 1605. Horizontal plate; 1606. Dust box; 1607. Dust suction pipe; 1608. Dust hood; 16081. Dust suction chamber; 1609. Material spreading roller; 1610. Inflating roller; 1611. Inflating pipe; 1612. Air guide elbow; 1613. Air pump; 1614. Intake pipe; 1615. Exhaust pipe; 17. Second material spreading mechanism; 18. Mounting frame; 19. Second motor; 20. Synchronous wheel; 21. Synchronous belt. DETAILED DESCRIPTION

[0038] To make the objectives, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts shall fall within the scope of protection of the present invention.

[0039] The embodiment of the present invention provides a device for detecting defects in lightweight fiber cloth for new energy vehicles, comprising a base 1; illustratively, Figure 1 shown.

[0040] Two groups of unwinding frames 2 are provided on the base 1, and an unwinding roller 3 is rotatably connected between the two groups of unwinding frames 2, and the textile fabric to be tested is wound on the unwinding roller 3. Two groups of winding frames 4 are provided on the base 1, and a winding roller 5 is rotatably connected between the two groups of winding frames 4. A first motor 6 is installed on one group of winding frames 4, and the output end of the first motor 6 is transmission-connected to one end of the winding roller 5. A detection platform 7 is provided on the base 1, and the detection platform 7 is arranged between the unwinding roller 3 and the winding roller 5;

[0041] Specifically, the textile fabric roll is placed on the unwinding roller 3, one end of the textile fabric is wound onto the winding roller 5 after passing through the detection table 7, and the winding roller 5 is driven to rotate by the first motor 6 to realize the transportation of the textile fabric. The intermittent transportation of the textile fabric is realized by controlling the opening and closing time of the first motor 6.

[0042] Two sets of limit plates 8 are symmetrically mounted on the detection platform 7. Both sets of limit plates 8 have limit slots 801 formed thereon. Both sets of limit plates 8 are fixedly connected to extension plates 9. Both sets of extension plates 9 are fixedly connected to first electric push rods 10. The output ends of the two sets of first electric push rods 10 are transmission-connected to image acquisition mechanisms 11. A control component is also provided on the detection platform 7, comprising a single-chip microcomputer, a display screen, and an alarm light.

[0043] Specifically, a section of textile fabric to be inspected is conveyed to the inspection table 7, the surface of the textile fabric is photographed by the image acquisition mechanism 11, and the image acquisition mechanism 11 is driven by two groups of first electric push rods 10 to move horizontally on the two groups of limit plates 8, and full-segment scanning image acquisition is performed on the textile fabric located on the inspection table 7, and the completed scan image is generated and conveyed to the display for defect analysis. When a fabric defect is detected, the scan image corresponding to the section of fabric is marked to facilitate the staff to find and locate the defective textile fabric section, and at the same time, the staff is reminded by the alarm light. After the image acquisition is completed, the image acquisition mechanism 11 is reset by the two groups of first electric push rods 10.

[0044] The image acquisition mechanism 11 includes two sets of sliders 1101, illustratively, as Figure 2 shown.

[0045] The two groups of sliders 1101 are respectively fixedly connected to the output ends of the two groups of first electric push rods 10, and the opposite side walls of the two groups of sliders 1101 are fixedly connected to the limit bolts 1102, and the two groups of limit bolts 1102 are respectively movably fitted with the two groups of limit grooves 801;

[0046] The upper and lower side walls of the two groups of sliders 1101 are respectively fixedly connected to a first bracket 1103 and a second bracket 1104. A crossbeam 1105 is fixedly connected between the two groups of first brackets 1103 and the two groups of second brackets 1104. Two groups of second electric push rods 1106 are installed on the two groups of crossbeams 1105. The output ends of the two groups of second electric push rods 1106 are transmission-connected to a linkage plate 1107. Scanning cameras 1108 are installed on the two groups of linkage plates 1107. The shooting ends of the two groups of scanning cameras 1108 are respectively directed towards the front and back sides of the textile fabric. Fill lights 1109 are provided on both sides of the scanning cameras 1108.

[0047] Specifically, by setting up two groups of scanning cameras 1108, the image acquisition mechanism 11 can simultaneously perform image acquisition operations on the front and back sides of the textile fabric. The second electric push rod 1106 can drive the linkage plate 1107 to move up and down, so as to adjust the distance between the scanning camera 1108 and the surface of the textile fabric according to the shooting needs, so that the captured image meets the requirements. By setting the fill light 1109, the clarity of the captured image is effectively improved.

[0048] For example, Figure 3-5 shown.

[0049] Two sets of arc-shaped guide plates 12 are fixedly connected between the two sets of limit plates 8. The two sets of arc-shaped guide plates 12 are distributed in a mirror image with the central axis of the limit plate 8 as the center. Both sets of arc-shaped guide plates 12 are movably fitted with the lower surface of the textile fabric. A positioning detection plate 13 is fixedly connected between the two sets of arc-shaped guide plates 12. The positioning detection plate 13 is provided with a detection slot 1301. Through the detection slot 1301, a scanning camera 1108 located at the bottom end of the positioning detection plate 13 can capture an image of the lower surface of the textile fabric;

[0050] Specifically, by making the textile fabric fit on two sets of arc-shaped guide plates 12 for transportation, when the conveying angle of the textile fabric changes during transportation, it fits with the arc-shaped surface of the arc-shaped guide plate 12, thereby avoiding damage or wrinkles to the textile fabric caused by contact with sharp edges during transportation. By providing the positioning detection plate 13 and the detection slot 1301, the image acquisition mechanism 11 can simultaneously capture images of the upper and lower surfaces of the textile fabric.

[0051] Two groups of bidirectional screw rods 14 are rotatably connected between the two groups of limit plates 8. The two groups of bidirectional screw rods 14 are respectively arranged at the upper and lower ends of the positioning detection plate 13. The two groups of bidirectional screw rods 14 are threadedly connected with a first material spreading mechanism 16 and a second material spreading mechanism 17. The first material spreading mechanism 16 and the second material spreading mechanism 17 have the same structure and size. The first material spreading mechanism 16 and the second material spreading mechanism 17 are symmetrically distributed with the central axis of the bidirectional screw rod 14 as the center. Two groups of limit shafts 15 are fixedly connected between the two groups of limit plates 8;

[0052] A mounting frame 18 is fixedly connected to one group of the limit plates 8, and a second motor 19 is installed on the mounting frame 18. Two groups of synchronous wheels 20 are rotatably connected to one group of the limit plates 8. The center of one group of the synchronous wheels 20 is transmission-connected to the output end of the second motor 19. Both groups of the synchronous wheels 20 are sleeved with a synchronous belt 21. The centers of the two groups of synchronous wheels 20 are respectively transmission-connected to one end of the two groups of bidirectional screw rods 14.

[0053] Specifically, the second motor 19 drives the two sets of synchronous wheels 20 to rotate synchronously, so that the two sets of bidirectional screw rods 14 rotate synchronously, so that the first material spreading mechanism 16 and the second material spreading mechanism 17 on one set of bidirectional screw rods 14 move in opposite directions at the same time, spreading the textile fabric, so that the surface of the textile fabric to be photographed remains flat and clean, and the accuracy of defect detection is improved.

[0054] The first material spreading mechanism 16 includes an internal thread block 1601 and a linkage block 1602; for example, Figure 6-8 shown.

[0055] The internal thread block 1601 is threadedly connected to a group of bidirectional screw rods 14, and a through hole 1603 is provided on the linkage block 1602, and the through hole 1603 is movably fitted with a group of limit shafts 15. The linkage block 1602 and the internal thread block 1601 are fixedly connected with a vertical plate 1604, and the top ends of the two groups of vertical plates 1604 are fixedly connected with a horizontal plate 1605, and the horizontal plate 1605 is fixedly connected with a dust collection box 1606. The bottom end of the dust collection box 1606 is connected with a plurality of dust suction pipes 1607, and the bottom ends of the plurality of dust suction pipes 1607 pass through the horizontal plate 1605 and are fixedly connected with a dust collection cover 1608. A dust collection chamber 16081 is provided in the dust collection cover 1608, and the dust collection chamber 16081 is connected with the plurality of dust suction pipes 1607. The air inlet end of the dust collection chamber 16081 faces the surface of the textile fabric;

[0056] A spreading roller 1609 is fixedly connected between the internal thread block 1601 and the linkage block 1602, and an inflation roller 1610 is sleeved on the spreading roller 1609. After the inflation roller 1610 is inflated, it adheres to the surface of the textile fabric. An air pressure sensor is installed inside the inflation roller 1610. The inflation roller 1610 is connected to an inflation pipe 1611, and the inflation pipe 1611 is connected to an exhaust pipe 1615. The exhaust pipe 1615 is provided with a pressure relief valve. The air inlet end of the inflation pipe 1611 is connected to an air guide elbow 1612, and the air inlet end of the air guide elbow 1612 is connected to an air pump 1613. The air inlet end of the air pump 1613 is connected to an intake pipe 1614. The air inlet end of the intake pipe 1614 passes through the horizontal plate 1605 and extends to the interior of the dust collecting box 1606. The air inlet end of the intake pipe 1614 is provided with a filter.

[0057] Specifically, air is allowed to enter the inflation roller 1610 through the air pump 1613, so that the inflation roller 1610 expands and squeezes the textile fabric. The inflation rollers 1610 in the two sets of first material spreading mechanisms 16 are respectively attached to the upper and lower end surfaces of the textile fabric, and at the same time squeeze the textile fabric to achieve the effect of soft clamping of the textile fabric. The air pressure in the inflation roller 1610 is detected by the air pressure sensor. When the air pressure in the inflation roller 1610 is too high, the air is allowed to flow out through the exhaust pipe 1615 by opening the pressure relief valve, so that the air pressure in the inflation roller 1610 is maintained stable, thereby controlling the clamping force of the textile fabric. The two sets of second material spreading mechanisms 17 are also operated in the same way to achieve soft clamping of the textile fabric, so that when the two sets of first material spreading mechanisms 16 and the second material spreading mechanisms 17 move in opposite directions, the textile fabric can be stretched and flattened to prevent the wrinkles of the textile fabric from affecting the defect detection.

[0058] Furthermore, negative pressure is formed in the dust box 1606 through the air pump 1613, and negative pressure is formed in the dust hood 1608 through the dust suction pipe 1607 connected to the dust box 1606, so that impurities or dust attached to the surface of the textile fabric enter the dust suction chamber 16081 and finally enter the dust box 1606 for centralized treatment.

[0059] The working principle of the device for detecting defects in lightweight fiber cloth for new energy vehicles proposed by the present invention is as follows:

[0060] The textile fabric roll is placed on the unwinding roller 3, and one end of the textile fabric is wound onto the winding roller 5 after passing through the detection table 7. The winding roller 5 is driven to rotate by the first motor 6 to realize the transportation of the textile fabric. The intermittent transportation of the textile fabric is realized by controlling the on and off time of the first motor 6.

[0061] A section of textile fabric to be inspected is conveyed to the inspection table 7, the surface of the textile fabric is photographed by the image acquisition mechanism 11, and the image acquisition mechanism 11 is driven by two groups of first electric push rods 10 to move horizontally on the two groups of limit plates 8, and full-segment scanning image acquisition is performed on the textile fabric on the inspection table 7, and the generated scanned image is conveyed to the display for defect analysis. When a fabric defect is detected, the scanned image corresponding to the section of fabric is marked to facilitate the staff to find and locate the defective textile fabric section, and at the same time, the staff is reminded by the alarm light. After the image acquisition is completed, the image acquisition mechanism 11 is reset by the two groups of first electric push rods 10.

[0062] By setting up two groups of scanning cameras 1108, the image acquisition mechanism 11 can simultaneously perform image acquisition operations on the front and back sides of the textile fabric. The second electric push rod 1106 can drive the linkage plate 1107 to move up and down, so as to adjust the distance between the scanning camera 1108 and the surface of the textile fabric according to the shooting needs, so that the captured image meets the requirements. By setting up the fill light 1109, the clarity of the captured image is effectively improved.

[0063] By making the textile fabric fit on two sets of arc-shaped guide plates 12 for conveying, when the conveying angle of the textile fabric changes during conveying, it fits with the arc-shaped surface of the arc-shaped guide plates 12, thereby preventing the textile fabric from being damaged or wrinkled due to contact with sharp edges during conveying. By providing the positioning detection plate 13 and the detection slot 1301, the image acquisition mechanism 11 can simultaneously capture images of the upper and lower surfaces of the textile fabric.

[0064] The second motor 19 drives the two sets of synchronous wheels 20 to rotate synchronously, so that the two sets of bidirectional screw rods 14 rotate synchronously, so that the first material spreading mechanism 16 and the second material spreading mechanism 17 on one set of bidirectional screw rods 14 move in opposite directions at the same time, spreading the textile fabric, so that the surface of the textile fabric to be photographed remains flat and clean, and the accuracy of defect detection is improved.

[0065] The air is pumped into the inflation roller 1610 through the air pump 1613, causing the inflation roller 1610 to expand and squeeze the textile fabric. The inflation rollers 1610 in the two groups of first material spreading mechanisms 16 are respectively attached to the upper and lower end surfaces of the textile fabric, and at the same time squeeze the textile fabric to achieve the effect of soft clamping of the textile fabric. The air pressure in the inflation roller 1610 is detected by the air pressure sensor. When the air pressure in the inflation roller 1610 is too high, the air is allowed to flow out through the exhaust pipe 1615 by opening the pressure relief valve, so that the air pressure in the inflation roller 1610 is maintained at a stable level, thereby controlling the clamping force of the textile fabric. The two groups of second material spreading mechanisms 17 are also operated in the same way to achieve soft clamping of the textile fabric, so that when the two groups of first material spreading mechanisms 16 and the second material spreading mechanisms 17 move in opposite directions, the textile fabric can be stretched and flattened to avoid the influence of textile fabric wrinkles on defect detection.

[0066] The air pump 1613 creates a negative pressure in the dust box 1606, and the dust hood 1608 creates a negative pressure through the dust pipe 1607 connected to the dust box 1606, so that impurities or dust attached to the surface of the textile fabric enter the dust collection chamber 16081 and finally enter the dust box 1606 for centralized treatment.

[0067] Based on the above-mentioned defect detection device for lightweight fiber cloth of new energy vehicles, an embodiment of the present invention further proposes a detection method for the defect detection device. Exemplarily, the detection method includes:

[0068] The textile fabric roll is placed on the unwinding roller, one end of the textile fabric is passed through the testing table and then wound onto the winding roller, the first motor is turned on to drive the winding roller to rotate, and the section of the textile fabric to be tested is conveyed to the testing table and then the first motor is turned off;

[0069] Turn on the second motor to drive the two sets of synchronous wheels to rotate synchronously, so that the two sets of bidirectional screws rotate synchronously, so that the first material spreading mechanism and the second material spreading mechanism on the same set of bidirectional screws move in opposite directions at the same time to the center of the textile fabric, and then turn off the second motor;

[0070] The air pump is turned on to allow air to enter the inflation roller, causing the inflation roller to expand and squeeze the textile fabric. The inflation rollers in the two sets of first material spreading mechanisms are respectively attached to the upper and lower end surfaces of the textile fabric and squeeze the textile fabric at the same time, achieving a soft clamping effect on the textile fabric.

[0071] The air pressure sensor installed in the inflation roller detects the air pressure inside the inflation roller. When the air pressure inside the inflation roller is too high, the pressure relief valve is opened to allow air to flow out through the exhaust pipe, thereby maintaining a stable air pressure inside the inflation roller and controlling the clamping force of the textile fabric.

[0072] The two sets of second material spreading mechanisms also operate in the same way to achieve soft clamping of textile fabrics;

[0073] Turning on the second motor drives the two sets of synchronous wheels to rotate synchronously in opposite directions, so that the two sets of bidirectional screws rotate synchronously in opposite directions, so that the two sets of first material spreading mechanisms and the two sets of second material spreading mechanisms on the two sets of bidirectional screws softly clamp the textile fabric and pull the textile fabric to move in opposite directions, thereby tensioning and flattening the textile fabric to keep the surface of the textile fabric flat;

[0074] While the air outlet of the air pump inflates the inflation roller, the air inlet of the air pump draws out the air in the dust box, forming a negative pressure in the dust box. The vacuum tube connected to the dust box forms a negative pressure in the dust hood, so that impurities or dust attached to the surface of the textile fabric enter the vacuum chamber and finally enter the dust box, keeping the surface of the textile fabric clean.

[0075] The two first electric push rods are turned on to drive the image acquisition mechanism to move horizontally on the two limit plates, and the scanning camera performs full-segment scanning image acquisition on the textile fabric on the testing table;

[0076] The generated scan image is sent to the display for defect analysis. When a fabric defect is detected, the scan image corresponding to the fabric segment is marked, making it easier for staff to find and locate the defective textile fabric segment. At the same time, an alarm light is used to remind staff.

[0077] After image acquisition is completed, the image acquisition mechanism is reset by the two sets of first electric push rods, and the air pump is turned off to deflate and shrink the inflatable rollers in the first and second material spreading mechanisms, so that the textile fabric is no longer clamped and the textile fabric continues to be transported.

[0078] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A lightweight fiber cloth defect detection device for new energy vehicles, comprising a base, characterized in that: Two sets of unwinding frames are provided on the base, and an unwinding roller is rotatably connected between the two sets of unwinding frames, and the textile fabric to be tested is wound on the unwinding roller; Two groups of winding frames are provided on the base, and a winding roller for winding and conveying textile fabrics is rotatably connected between the two groups of winding frames; The base is provided with a detection platform for positioning the textile fabric, and the detection platform is arranged between the unwinding roller and the winding roller; Two sets of limit plates are symmetrically installed on the inspection platform, and the two sets of limit plates are fixedly connected to extension plates, and the two sets of extension plates are fixedly connected to first electric push rods. The output ends of the two sets of first electric push rods are transmission-connected to image acquisition mechanisms for performing image acquisition and defect detection on textile fabrics; Two sets of bidirectional screw rods are rotatably connected between the two sets of limit plates, and the two sets of bidirectional screw rods are threadedly connected with a first material spreading mechanism and a second material spreading mechanism for tensioning, flattening and cleaning the textile fabrics; The first material spreading mechanism and the second material spreading mechanism have the same structure and size. The first material spreading mechanism and the second material spreading mechanism are symmetrically distributed with the central axis of the bidirectional screw as the center. Two groups of limiting shafts are fixedly connected between the two groups of limiting plates. The first material spreading mechanism includes an internal thread block and a linkage block, wherein the internal thread block is threadedly connected to a set of bidirectional screw rods, and a through hole is opened on the linkage block, and the through hole is movably fitted with a set of limit shafts; The linkage block and the internal thread block are both fixedly connected with a vertical plate, the top ends of the two groups of vertical plates are fixedly connected with a horizontal plate, the horizontal plate is fixedly connected with a dust collection box, the bottom end of the dust collection box is connected with a plurality of groups of dust suction pipes, the bottom ends of the plurality of groups of dust suction pipes are all fixedly connected with a dust collection cover after passing through the horizontal plate, a dust collection cavity is opened in the dust collection cover, the dust collection cavity is connected with the plurality of groups of dust collection pipes, and the air inlet end of the dust collection cavity faces the surface of the textile fabric; A material spreading roller is fixedly connected between the internal thread block and the linkage block, and an inflation roller is sleeved on the material spreading roller. After the inflation roller is inflated, it fits into the surface of the textile fabric. An air pressure sensor is installed inside the inflation roller, and the inflation roller is connected to an inflation pipe, and the inflation pipe is connected to an exhaust pipe. A pressure relief valve is provided on the exhaust pipe, and the air inlet end of the inflation pipe is connected to an air guide elbow, and the air inlet end of the air guide elbow is connected to an air pump, and the air inlet end of the air pump is connected to an intake pipe, and the air inlet end of the intake pipe extends to the interior of the dust collecting box after passing through the horizontal plate, and the air inlet end of the intake pipe is provided with a filter.

2. The device for detecting defects in lightweight fiber cloth for new energy vehicles according to claim 1, characterized in that: The image acquisition mechanism includes two groups of sliders, which are respectively fixedly connected to the output ends of the two groups of first electric push rods, and the opposite side walls of the two groups of sliders are fixedly connected to limit bolts.

3. The device for detecting defects in lightweight fiber cloth for new energy vehicles according to claim 2, characterized in that: The upper and lower side walls of the two groups of sliders are respectively fixedly connected with the first bracket and the second bracket, and the two groups of the first brackets are fixedly connected with the two groups of the second brackets. Two groups of second electric push rods are installed on the two groups of the beams, and the output ends of the two groups of the second electric push rods are transmission-connected with the linkage plate. Scanning cameras are installed on the two groups of linkage plates. The shooting ends of the two groups of scanning cameras are respectively facing the front and back sides of the textile fabric, and fill lights are provided on both sides of the scanning cameras.

4. The device for detecting defects in lightweight fiber cloth for new energy vehicles according to claim 1, characterized in that: Two groups of arc-shaped material guide plates are fixedly connected between the two groups of limit plates. The two groups of arc-shaped material guide plates are distributed in a mirror image with the central axis of the limit plate as the center. The two groups of arc-shaped material guide plates are movably fitted with the lower surface of the textile fabric. A positioning detection plate is fixedly connected between the two groups of arc-shaped material guide plates. A detection slot is provided on the positioning detection plate. Through the detection slot, the image acquisition mechanism can capture images of the lower surface of the textile fabric.

5. The device for detecting defects in lightweight fiber cloth for new energy vehicles according to claim 1, characterized in that: A mounting frame is fixedly connected to one group of the limit plates, a second motor is installed on the mounting frame, two groups of synchronous wheels are rotatably connected to one group of the limit plates, the center of one group of synchronous wheels is transmission connected to the output end of the second motor, and both groups of synchronous wheels are provided with synchronous belts, and the centers of the two groups of synchronous wheels are respectively transmission connected to one end of two groups of bidirectional screw rods.

6. A detection method for a defect detection device for lightweight fiber cloth for new energy vehicles according to any one of claims 1 to 5, characterized in that: The detection method comprises: The textile fabric roll is placed on the unwinding roller, one end of the textile fabric passes through the testing table and is wound onto the winding roller, and the section of the textile fabric to be tested is conveyed to the testing table; The two sets of first material spreading mechanisms and the two sets of second material spreading mechanisms are turned on to softly clamp the textile fabric and simultaneously pull the textile fabric in opposite directions, thereby tensioning and flattening the textile fabric to keep the surface of the textile fabric flat; The two first electric push rods are turned on to drive the image acquisition mechanism to move horizontally on the two limit plates, and perform full-segment scanning image acquisition on the textile fabric on the testing table; After image acquisition is completed, the image acquisition mechanism is driven to reset by the two sets of first electric push rods, and the first material spreading mechanism and the second material spreading mechanism no longer clamp the textile fabric, so that the textile fabric continues to be conveyed.

Images