Independently assembled cloth optical detection device

Abstract

The invention relates to the technical field of cloth detection, and provides an independently-assembled cloth optical detection device which comprises a horizontal frame, the two ends of the frame are assembled on the two side walls of cloth detection equipment, the lower portion of the frame is provided with more than two parallel cameras, lenses of the cameras right face an optical detection plate of cloth, and the lenses of the cameras face the optical detection plate of the cloth. Cloth passes through the space between the optical detection plate and the lens and is parallel to the optical detection plate when passing through the optical detection plate, and a controller in data communication with the camera is assembled on the frame. The device can be directly assembled at the upper part of an optical surface of old-fashioned cloth detection equipment, acquires data through the camera arranged at the lower part of the frame, and transmits the data to the controller, so that the old-fashioned equipment which needs to be manually detected by virtue of eyes is upgraded into automatic visual detection equipment; and a lens moving device is arranged in the camera, so that the shot moving cloth is clearer.

Description

Technical Field

[0001] The present invention relates to the technical field of cloth detection equipment, and in particular to an independently assembled cloth optical detection device. Background Art

[0002] Traditional fabric inspection usually relies on manual work. Although this method is intuitive and can handle some complex visual problems, it has many limitations, such as low efficiency, strong subjectivity, and susceptibility to fatigue. Therefore, with the advancement of technology, automated visual inspection technology through cameras is becoming more and more mainstream in the field of fabric inspection.

[0003] The new generation of fabric production equipment usually has visual optical detection structures, which are usually directly integrated above the fabric detection equipment, and the overall cost is relatively high. However, there are still a large number of primitive detection equipment in the current fabric production workshop. The efficiency of manual detection is relatively low, and it is difficult to cope with large-scale, high-speed production lines. However, the cost of replacing equipment is too high, and most fabric production companies cannot afford it. In addition, because the width of the fabric to be detected is relatively wide (1.5 to 1.75m), a large number of cameras are required, which is costly. In addition, the camera is affected by motion blur and the acquisition clarity is also low, resulting in a high defect missed detection rate. Summary of the invention

[0004] (I) Technical Problems Solved: In view of the above problems, the present invention provides an independently assembled fabric optical detection device which can be conveniently mounted above the optical surface of an existing fabric detection device to perform computer vision detection on fabrics.

[0005] (II) Technical solution: The technical solution adopted by the present invention to solve its technical problem is: the independently assembled cloth optical detection device includes a horizontal frame, the two ends of the frame are mounted on the two side walls of the cloth detection device, the lower part of the frame is equipped with two or more parallel cameras, the lens of the camera is facing the optical detection plate of the cloth, the cloth passes between the optical detection plate and the camera, and the cloth is parallel to the optical detection plate when passing through the optical detection plate, and the frame is equipped with a controller connected to the camera data; the camera includes a lens, a limit belt, a sun gear and a travel gear. The star wheel, the lens is fixedly mounted on the outer surface of the limiting belt, the limiting belt is an annular belt made of flexible material and has no rotational freedom; the sun wheel and the planetary wheel are both arranged inside the limiting belt and the outer surfaces of both are tightly attached to the inner surface of the limiting belt, the two side surfaces of the sun wheel are fixedly connected with rotating plates, the center of the planetary wheel is provided with a planetary shaft, the planetary wheel has the rotational freedom along the planetary shaft, the rotating plate is fixedly connected to the two sides of the planetary shaft, the sun wheel is connected with a bearing, the bearing is fixed on the rotating shaft, and the end of the rotating shaft is connected with a rotating motor; When the sun gear rotates, the planetary gear revolves along the sun gear and rotates along its axis; the limiting belt is deformed, and the lens has a tendency to move horizontally, and the movement speed of the lens is the same as the speed of the cloth to be detected placed on the cloth detection device below.

[0006] Preferably, the camera is mounted on the lower part of the frame via a connecting plate.

[0007] Preferably, the controller is mounted on the right side of the lower portion of the frame.

[0008] Preferably, the number of the cameras is 3.

[0009] Preferably, the frame comprises two front and rear support rods, the two support rods are connected as a whole via left and right side panels, and the two side panels are fixed to the left and right wall surfaces of the cloth detection device via bolts.

[0010] Preferably, the frame adopts a pull-out structure toward both sides, and the two sides of the frame are pressed tightly against the inner walls on both sides of the cloth detection equipment, so that positioning support is achieved through friction.

[0011] Preferably, a sliding assembly is provided above the lens, and the sliding assembly includes a sliding rod and a limiting groove, a horizontal hollow groove is provided in the middle of the limiting groove, the lower end of the sliding rod is fixedly connected to the upper surface of the lens, the upper end passes through the limiting groove, and has freedom of movement in the hollow groove inside the limiting groove, the width of the hollow groove is the same as the diameter of the sliding rod, and the surfaces of the two are tightly connected.

[0012] Preferably, the sliding assembly is fixedly connected to the interior of the camera via a connecting piece, and the position of the rotating motor is fixed inside the camera.

[0013] Preferably, the upper and lower ends of the connecting portion between the sliding rod and the limiting groove are provided with a locking structure, and the sliding rod has and only has horizontal freedom of movement inside the limiting groove.

[0014] Preferably, the sliding assembly further comprises a connecting rod, which is welded and fixed to the side surface of the sliding rod and fixedly connected to the limiting belt by gluing or welding, and the connecting rod is parallel to the horizontal plane.

[0015] Preferably, the rotating motor and the lens are connected to a power source via electric wires.

[0016] (III) Beneficial effects: Compared with the prior art, the present invention provides an independently assembled cloth optical detection device, which has the following beneficial effects: 1. This independently assembled fabric optical inspection device can be directly assembled on the upper optical surface of the old-fashioned fabric inspection equipment, collect data through the lens arranged at the lower part of the frame, and transmit the data to the controller, analyze it through the controller, and feed back the results to the display interface. Compared with the prior art, the old-fashioned equipment that requires manual inspection of fabrics by eyes is upgraded to automatic visual inspection equipment, which does not need to replace advanced equipment, reduces costs, and frees up the workload of staff. In addition, this inspection data can be stored by computer, which is convenient for recording, checking, and viewing. The old-fashioned equipment that originally required a lot of manpower and was easily affected by subjective factors has been successfully upgraded to highly automated and intelligent visual inspection equipment.

[0017] 2. This is an independently assembled fabric optical inspection device, in which a moving component is installed inside the camera, so that the lens inside the camera can be flexibly adjusted in the horizontal direction, and perfectly synchronized with the inspected fabric in terms of moving speed and direction. When the lens and the fabric move at the same speed and direction, the fabric image captured by the lens appears to be in a relatively static state, so the photographs taken are clearer, which greatly improves the accuracy and efficiency of the inspection, so that the quality problems of the fabric can be discovered and handled in a timely and accurate manner. At the same time, due to the high clarity of the photographs taken, strong evidence support is also provided for subsequent quality analysis and tracing. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the three-dimensional structure of an independently assembled cloth optical detection device.

[0019] Figure 2It is a schematic diagram of the structure of the front side of an independently assembled fabric optical detection device.

[0020] Figure 3 Schematic diagram of the side structure of an independently assembled cloth optical detection device.

[0021] Figure 4 Schematic diagram of the internal structure of the camera.

[0022] Figure 5 It is a schematic diagram of the structure when the lens reaches the rightmost end in the horizontal direction.

[0023] Figure 6 It is a schematic diagram of the structure when the lens reaches the leftmost end in the horizontal direction.

[0024] Figure 7 Schematic diagram of the camera's internal sliding components.

[0025] Figure 8 This is a schematic diagram of the structure when the sun gear and the planetary gear are not connected through the rotating plate.

[0026] In the figure: 1. frame; 2. camera; 21. lens; 22. limiting belt; 23. sun gear; 231. bearing; 232. rotating shaft; 24. planetary gear; 241. planetary shaft; 25. sliding assembly; 251. sliding rod; 252. limiting groove; 253. connecting rod; 26. rotating plate; 3. controller; 4. connecting plate; 5. side plate. DETAILED DESCRIPTION

[0027] The present invention is further described below in conjunction with embodiments: In this patent, the directional terms used are based on the Figure 2 The orientation or positional relationship of the figures shown is only for simplifying the description of the present application, rather than indicating a specific orientation that a device or component must have, and therefore should not be understood as a limitation on the present application.

[0028] In this embodiment, if Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, the independently assembled fabric optical inspection device comprises a horizontal frame 1, both ends of the frame 1 are mounted on the side walls of the fabric inspection device, the lower part of the frame 1 is equipped with two or more parallel cameras 2, the lens 21 of the camera 2 is facing the optical inspection plate of the fabric, the fabric passes between the optical inspection plate and the lens 21, and the fabric is parallel to the optical inspection plate when passing through the optical inspection plate, and the frame 1 is equipped with a controller 3 which is in data communication with the camera 2.

[0029] See also Figure 1-Figure 3The independently assembled cloth optical inspection device can be directly assembled on the upper optical surface of the old cloth inspection equipment, collect data through the camera 2 arranged at the lower part of the frame 1, and transmit the data to the controller 3, analyze it through the controller 3, and feed back the result to the display interface, so that the old-fashioned equipment that needs manual inspection of cloth by eyes is upgraded to automatic visual inspection equipment. At the same time, the inspection data can be stored by the computer for subsequent viewing and analysis.

[0030] In the specific design, the camera 2 is installed at the lower part of the frame 1 through the connecting plate 4. The controller 3 is assembled on the right side of the lower part of the frame 1. In the specific implementation, the number of cameras is 3, and the camera 2 is a line scan camera, so that the shooting format is wide, the speed is fast, the accuracy is high, and the product continuity on the assembly line is high. It is more cost-effective than traditional cameras. In this embodiment, the frame 1 includes two front and rear support rods, and the two support rods are connected as a whole by left and right side panels 5. The two side panels 5 are fixed to the left and right walls of the fabric detection equipment by bolts. The support rods and the frame 1 are an integrated structure formed by welding, which is not drawn in the drawings of the specification.

[0031] In specific implementation, the frame 1 can also be designed as a pull-out structure on both sides, with both sides of the frame 1 pressed tightly against the inner walls on both sides of the cloth detection equipment, and positioning support is achieved through friction.

[0032] In this embodiment, if Figure 5-Figure 8 As shown, the interior of the camera 2 includes a lens 21, a limiting belt 22, a sun gear 23 and a planetary gear 24. The lens 21 is fixedly mounted on the outer surfaces of the two horizontal ends of the limiting belt 22 through a sliding assembly 25. The limiting belt 22 is a flexible material, such as an annular belt made of rubber, etc., and has no rotational freedom; the sun gear 23 and the planetary gear 24 are both arranged inside the limiting belt 22 and the outer surfaces of both are tightly attached to the inner surface of the limiting belt 22. A rotating plate 26 is fixedly connected to the two side surfaces of the sun gear 23. A planetary shaft 241 is arranged at the center of the planetary gear 24. The planetary gear 24 has the rotational freedom along the planetary shaft 241, so that the sliding friction between the planetary gear 24 and the limiting belt 22 is converted into rolling friction, thereby reducing resistance. The rotating plate 26 is fixedly connected to the two sides of the planetary shaft 241. The sun gear 23 is connected to a bearing 232, and the bearing 232 is fixed on the rotating shaft 231. The end of the rotating shaft 231 is connected to a rotating motor; When the sun gear 23 rotates along the axis driven by the rotating motor, it will drive the rotating plates 26 on both sides to rotate together. The other end of the rotating plate 26 is fixedly connected to the planetary shaft 241. Therefore, the planetary gear 24 revolves around the sun gear 23 driven by the planetary shaft 241. Because the planetary gear 24 itself has the freedom to rotate along the planetary shaft 241, the planetary shaft 24 will also rotate under the friction of the limiting belt 22. At the same time, affected by the motion trajectory of the internal planetary gear 24, the limiting belt 22 that is closely attached to its outer surface undergoes regular deformation, driving the lens 2 connected to the outer surface 1 makes horizontal back-and-forth movement. The user can adjust the moving speed of the lens 21 by adjusting the power of the rotating motor to make its moving speed the same as the speed of the cloth to be detected placed on the cloth detection device below. At this time, the cloth picture captured by the lens 21 is in a relatively static state, so the photos taken are clearer, which greatly improves the accuracy and efficiency of the detection, so that the quality problems of the cloth can be discovered and handled in a timely and accurate manner. At the same time, due to the high clarity of the photos taken, it also provides strong evidence support for subsequent quality analysis and tracing.

[0033] See also Figure 5-Figure 7 In this embodiment, a sliding assembly 25 is provided above the lens 21. The sliding assembly 25 is fixedly connected to the interior of the camera 2 through a connecting piece, such as a clamping mechanism or a welding block. The position of the rotating motor inside the camera 2 is fixed to ensure the stability of the two structures inside the camera. The sliding assembly 25 includes a sliding rod 251 and a limiting groove 252. A horizontal hollow groove is provided in the middle of the limiting groove 252. The lower end of the sliding rod 251 is fixedly connected to the upper surface of the lens 21, and the upper end passes through the limiting groove 252 and has freedom of movement in the hollow groove. The width of the hollow groove is the same as the diameter of the sliding rod 251. The surfaces of the two are tightly connected. The upper and lower ends of the connecting part of the sliding rod 251 and the limiting groove 252 are both provided with a clamping structure. Therefore, the sliding rod 251 has and only has horizontal linear motion freedom inside the hollow groove, which ensures that the lens 21 will not shake in the vertical direction under the movement of the sun gear 23, thereby ensuring the quality of the picture taken by the lens 21.

[0034] In this embodiment, the sliding assembly 25 also includes a connecting rod 253, which is welded and fixed to the side surface of the sliding rod 251, and is fixedly connected to the limiting belt 22 by gluing or welding. The connecting rod 253 is parallel to the horizontal plane, so that the lens 21 does not need to be directly connected to the limiting belt 22, but is indirectly connected through the connecting rod 253, which facilitates the replacement of the lens 21 during the maintenance of the equipment.

[0035] In specific implementation, the rotating motor and lens 21 inside the camera 2 are both connected to the power supply circuit through wires. The specific connection lines are not drawn in the drawings of the specification and are determined according to the specific model and specifications of the camera 2 used.

[0036] The above embodiments are only preferred modes of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An independently assembled cloth optical inspection device, comprising a horizontal frame (1), characterized in that: The two ends of the frame (1) are mounted on the side walls of the fabric detection device. The lower part of the frame (1) is equipped with two or more parallel cameras (2). The lens (21) of the camera (2) faces the optical detection plate of the fabric. The fabric passes between the optical detection plate and the camera (2). When the fabric passes through the optical detection plate, it is parallel to the optical detection plate. The frame (1) is equipped with a controller (3) which is in data communication with the camera (2). The camera (2) includes a lens (21), a limiting belt (22), a sun gear (23) and a planetary gear (24). The lens (21) is fixedly mounted on the outer surface of the limiting belt (22). The limiting belt (22) is flexible. The ring belt is made of a material and has no rotational freedom; the sun gear (23) and the planet gear (24) are both arranged inside the limiting belt (22) and the outer surfaces of both are tightly attached to the inner surface of the limiting belt (22); rotating plates (26) are fixedly connected to the two side surfaces of the sun gear (23); a planet shaft (241) is arranged at the center of the planet gear (24); the planet gear (24) has a rotational freedom along the planet shaft (241); the rotating plate (26) is fixedly connected to the two sides of the planet shaft (241); the sun gear (23) is connected to a bearing (232); the bearing (232) is fixed on the rotating shaft (231); and the end of the rotating shaft (231) is connected to a rotating motor; When the sun gear (23) rotates, the planetary gear revolves along the sun gear (23) and rotates along its axis; the limiting belt (22) is deformed, and the lens (21) has a tendency to move in the horizontal direction; the movement speed of the lens (21) is the same as the speed of the fabric to be detected placed below on the fabric detection device.

2. The optical inspection device for independently assembled fabrics according to claim 1, characterized in that: The camera (2) is mounted on the lower part of the frame (1) via a connecting plate (4), and the number of the cameras (2) is three.

3. The optical inspection device for independently assembled fabrics according to claim 1, characterized in that: The controller (3) is mounted on the right side of the lower part of the frame (1).

4. The optical inspection device for independently assembled fabrics according to claim 1, characterized in that: The frame (1) comprises two front and rear support rods, the two support rods being connected as a whole via left and right side panels (5), and the two side panels (5) being fixed to left and right wall surfaces of the cloth detection device via bolts.

5. The independently assembled cloth optical detection device according to claim 1, characterized in that: The frame (1) adopts a structure that can be pulled out toward both sides, and the two sides of the frame (1) are pressed tightly against the inner walls of both sides of the fabric detection equipment, achieving positioning support through friction.

6. The independently assembled cloth optical detection device according to claim 1, characterized in that: A sliding assembly (25) is arranged above the lens (21), the sliding assembly (25) comprising a sliding rod (251) and a limiting groove (252), a hollow groove in the horizontal direction being provided in the middle of the limiting groove (252), the lower end of the sliding rod (251) being fixedly connected to the upper surface of the lens (21), the upper end of the sliding rod (251) passing through the limiting groove (252) and having freedom of movement in the hollow groove, the width of the hollow groove being the same as the diameter of the sliding rod (251), and the surfaces of the two being tightly connected.

7. The optical inspection device for independently assembled fabrics according to claim 6, characterized in that: The sliding assembly (25) is fixedly connected to the interior of the camera (2) via a connecting piece, and the position of the rotating motor inside the camera (2) is fixed.

8. The independently assembled cloth optical detection device according to claim 6, characterized in that: The upper and lower ends of the connection portion between the sliding rod (251) and the limiting groove (252) are both provided with a locking structure, and the sliding rod (251) has and only has a horizontal degree of freedom of movement inside the limiting groove (252).

9. The optical inspection device for independently assembled fabrics according to claim 6, characterized in that: The sliding assembly (25) further comprises a connecting rod (253), wherein the connecting rod (253) is welded and fixed to the side surface of the sliding rod (251) and is fixedly connected to the limiting belt (22) by gluing or welding, and the connecting rod (253) is parallel to the horizontal plane.

10. The independently assembled cloth optical detection device according to claim 1, characterized in that: The rotating motor and the lens (21) are connected to a power source via electric wires.

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