Defect detection camera light source support and circular weft machine defect detection system

Abstract

The utility model discloses a kind of defect cloth detection camera light source support and circular weft machine defect cloth detection system, belong to defect cloth detection system technical field, the lens of camera is towards front, cloth is laid in the front of lens along up-down direction, cloth moves in the front of lens, light source mounting frame is set in the top of camera mounting frame, light source is irradiated from the top of camera downwards, when cloth exists defect, the defect position of cloth can appear forward recess or backward bulge error structure, since light source is irradiated from top to bottom cloth vertically arranged, when light irradiates to forward recess or backward bulge defect, it can form larger shadow in defect position, the contrast between shadow and normal structure of cloth is higher, so as to facilitate defect cloth detection system to detect defect by the shadow in image, improve defect detection accuracy of defect cloth detection system, improve the efficiency of defect cloth detection.

Description

Technical Field

[0001] This utility model relates to the technical field of defective fabric detection systems, and in particular to a defective fabric detection camera light source bracket and a defective fabric detection system for circular knitting machines. Background Technology

[0002] Circular knitting machines typically require a defect detection system to inspect the woven fabric for defects. Currently, these systems consist of a camera and a light source. The light source illuminates the fabric, and the camera lens is pointed directly at the fabric to capture a clear image. The system then uses this image to detect defects. However, the low contrast between the defects in the image and the fabric itself can lead to errors in defect detection, impacting the efficiency of the defect detection process. Utility Model Content

[0003] This invention aims to solve at least one of the technical problems existing in the prior art. To this end, this invention proposes a defective fabric detection camera light source bracket and a defective fabric detection system for circular knitting machines. The defective fabric detection system detects defects by using shadows in the image, thereby improving the accuracy and efficiency of defective fabric detection.

[0004] According to a first aspect embodiment of the present invention, a light source bracket for a defective fabric detection camera includes: The camera mounting bracket has a through-hole for mounting cameras at the front and back. A camera is mounted on the camera mounting bracket. The camera has a lens, which is disposed in the camera mounting hole and faces forward. A light source mounting bracket is disposed on top of the camera mounting bracket, and the light source mounting bracket extends forward; A light source is mounted on the light source mounting bracket, and the light source's illumination direction is downward.

[0005] According to the embodiment of this utility model, the light source bracket for the defective fabric detection camera has at least the following beneficial effects: the camera lens faces forward, the fabric is laid in front of the lens in a vertical direction, the fabric moves in front of the lens, the light source mounting bracket is set on the top of the camera mounting bracket, and the light source shines down from above the camera. When there are defects in the fabric, the defective position of the fabric will show an incorrect structure of forward concavity or backward convexity. Since the light source shines down on the vertically arranged fabric, when the light shines on the forward concavity or backward convexity defect, a large shadow will be formed at the defect position. The contrast between the shadow and the normal structure of the fabric is high, so that the defective fabric detection system can detect defects by the shadow in the image, thereby improving the defect detection accuracy of the defective fabric detection system and improving the efficiency of defective fabric detection.

[0006] According to some embodiments of the present invention, the illumination direction of the light source forms an angle with the optical axis of the lens.

[0007] According to some embodiments of this utility model, the angle between the illumination direction of the light source and the optical axis of the lens can be arbitrarily adjusted.

[0008] According to some embodiments of the present invention, the light source extends in the left-right direction, and the width of the light source in the left-right direction is greater than the width of the lens in the left-right direction.

[0009] According to some embodiments of this utility model, the distances from the left and right sides of the light source to the camera are equal.

[0010] According to some embodiments of the present invention, the bottom of the light source mounting bracket is provided with a light source mounting groove extending in the left-right direction, and the light source is disposed in the light source mounting groove.

[0011] According to some embodiments of the present invention, the defective fabric detection camera light source bracket further includes: A pressure cap is detachably connected to the bottom of the light source mounting bracket, and the pressure cap abuts against the bottom of the light source to confine the light source within the light source mounting slot.

[0012] According to some embodiments of the present invention, the defective fabric detection camera light source bracket further includes: A glass plate is placed over the front end of the camera mounting hole; A driver is provided on the camera mounting bracket; A scraper blade is connected to the driver, which drives the scraper blade to move on the front side of the glass sheet.

[0013] According to some embodiments of this utility model, both the camera mounting bracket and the light source mounting bracket are plate-shaped structures.

[0014] The defective fabric detection system for circular knitting machines according to a second aspect of the present invention includes the defective fabric detection camera light source bracket described in the above embodiment.

[0015] Since the circular knitting machine defective fabric detection system adopts all the technical solutions of the defective fabric detection camera light source bracket of the above embodiments, it has at least all the beneficial effects brought about by the technical solutions of the above embodiments, which will not be repeated here. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of the light source bracket for a defective fabric detection camera according to an embodiment of the present invention; Figure 2 This is a schematic diagram of the working operation of the light source bracket for a defective fabric detection camera according to an embodiment of the present invention; Figure 3This is an exploded view of the light source bracket of a defective fabric detection camera according to an embodiment of the present invention.

[0017] Reference numerals: camera mounting bracket 100, camera mounting hole 110, camera 200, lens 210, light source mounting bracket 300, light source mounting slot 310, light source 400, pressure cap 500, light transmission hole 510, glass plate 600, driver 700, scraper 800, cloth 900, defect 910. Detailed Implementation

[0018] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0019] In the description of this utility model, it should be understood that the terms front, back, up, down, axial, circumferential, etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0020] In the description of this utility model, "multiple" means two or more; "greater than," "less than," and "exceeding" are understood to exclude the stated number; "above," "below," and "within" are understood to include the stated number. The use of "first" and "second" in the description is merely for distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly specifying the number of indicated technical features or their sequential relationship.

[0021] In the description of this utility model, it should be noted that terms such as "setting," "installing," and "connecting" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0022] The technical solution of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the embodiments described below are some embodiments of this utility model, not all embodiments.

[0023] Reference Figures 1 to 3 As shown, this utility model provides a light source bracket for a defective fabric detection camera.

[0024] The defective fabric inspection camera light source bracket includes a camera mounting bracket 100, a camera 200, a light source mounting bracket 300, a light source 400, a pressure cover 500, a glass plate 600, a driver 700, and a scraper 800.

[0025] The camera mounting bracket 100 has a plate-like structure. A camera mounting hole 110 is provided in the middle of the camera mounting bracket 100, which runs through the front and rear direction. A connecting bracket is provided on the rear side of the camera mounting bracket 100. The camera 200 is located on the rear side of the camera mounting bracket 100. The connecting bracket is connected to the camera 200. A lens 210 is provided on the front side of the camera 200. The lens 210 passes through the camera mounting hole 110 and faces forward. A glass plate 600 is placed on the front end face of the camera mounting hole 110. The front side of the glass plate 600 is flush with the front side of the camera mounting bracket 100.

[0026] The light source mounting bracket 300 has a plate-like structure. The rear end of the light source mounting bracket 300 is connected to the top of the camera mounting bracket 100. The light source mounting bracket 300 extends forward and the front end of the light source mounting bracket 300 extends out in front of the camera mounting bracket 100. The bottom of the light source mounting bracket 300 is provided with a light source mounting groove 310, which runs through the light source mounting bracket 300 in the left and right direction. The light source 400 extends in the left and right direction and is disposed in the light source mounting groove 310.

[0027] The flat camera mounting bracket 100 and light source mounting bracket 300 are less likely to accumulate yarn and other debris generated during the weaving of fabric by the circular knitting machine, thus preventing the light source 400 from being blocked by debris and affecting the light illumination range, and preventing the camera 200 from being blocked by debris and affecting the detection of defective fabric.

[0028] The cover 500 is provided with a light-transmitting hole 510 that runs through the vertical direction. The left and right sides of the cover 500 are folded upward to form flanges. The cover 500 is located below the light source mounting groove 310. The flanges on the left and right sides of the cover 500 are connected to the left and right sides of the light source mounting bracket 300. The cover 500 abuts against the bottom of the light source 400. The light-transmitting hole 510 of the cover 500 avoids the light-emitting component of the light source 400 to ensure that the light source 400 can emit light downward.

[0029] The light source 400 is detachably mounted on the bottom of the light source mounting bracket 300, and the light source 400 is confined in the light source mounting slot 310, so that the light source can be quickly replaced when the brightness decreases or is damaged after long-term operation.

[0030] The width of the light source 400 in the left-right direction is greater than the width of the lens 210 in the left-right direction, ensuring that the light emitted downward by the light source 400 can cover the entire area of ​​the fabric 900 in front of the lens 210, and avoiding shadows in the shooting area of ​​the fabric 900 due to the deviation of the light source 400.

[0031] Furthermore, the distances from the left and right sides of the light source 400 to the lens 210 are equal, which helps the light emitted by the light source 400 to be evenly distributed on the fabric 900 directly in front of the lens 210, so as to ensure that the image captured by the lens 210 obtains a uniform and clear image of the fabric 900.

[0032] The angle between the illumination direction of the light source 400 and the optical axis of the lens 210 of the camera 200 is between 80° and 110°. In this embodiment, the angle between the illumination direction of the light source 400 and the optical axis of the lens 210 of the camera 200 is preferably 90°.

[0033] By restricting the illumination direction of the light source 400, it is ensured that the light emitted downward from the light source 400 can form a shadow on the defect 910 on the fabric 900, thereby highlighting the defect 910 in the image. The shadow expands the display range of the defect 910 in the image, and the shadow increases the contrast between the defect 910 and the normal position in the image, which helps the defect fabric detection system to accurately identify the defect 910.

[0034] The driver 700 is located on the rear side of the camera mounting bracket 100. The driver 700 is a rotary cylinder. The output shaft of the rotary cylinder extends out from the front side of the camera mounting bracket 100. The output shaft rotates around an axis extending in the front-rear direction. The driver 700 has two air inlets. Compressed gas is introduced into the two air inlets to rotate the output shaft of the rotary cylinder. The scraper 800 is connected to the output shaft. The scraper 800 abuts against the front side of the camera mounting bracket 100, and the front side of the glass plate 600 is located within the rotation trajectory of the scraper 800.

[0035] The drive 700 drives the scraper 800 to rotate, so that the scraper 800 cleans the front side of the glass plate 600, so as to prevent foreign objects on the circular knitting machine from falling onto the front side of the glass plate 600 and interfering with the image captured by the lens 210.

[0036] Reference Figure 1 and Figure 2 As shown, the lens 210 of the camera 200 faces forward, and the cloth 900 is laid in the vertical direction in front of the lens 210. The cloth 900 moves in front of the lens 210. The light source mounting bracket 300 is set on top of the camera mounting bracket 100, and the light source 400 shines downward from above the camera 200. (Refer to...) Figure 2As shown, when fabric 900 has a defect 910, the defect position of fabric 900 will have an incorrect structure that is concave forward or convex backward. Since the light source 400 illuminates the vertically arranged fabric 900 from top to bottom, when the light shines on the concave forward or convex backward defect 910, a large shadow will be formed at the defect position. The contrast between the shadow and the normal structure of fabric 900 is high, so that the defect detection system can detect the defect 910 by the shadow in the image, thereby improving the defect detection accuracy and efficiency of the defect detection system.

[0037] This utility model also provides a defective fabric detection system for circular knitting machines, including the defective fabric detection camera light source bracket described in the above embodiments.

[0038] Since the circular knitting machine defective fabric detection system adopts all the technical solutions of the defective fabric detection camera light source bracket of the above embodiments, it has at least all the beneficial effects brought about by the technical solutions of the above embodiments, which will not be repeated here.

[0039] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.

Claims

1. A light source bracket for a defective fabric detection camera, characterized in that, include: The camera mounting bracket has a through-hole for mounting cameras at the front and back. A camera is mounted on the camera mounting bracket. The camera has a lens, which is disposed in the camera mounting hole and faces forward. A light source mounting bracket is disposed on top of the camera mounting bracket, and the light source mounting bracket extends forward; A light source is mounted on the light source mounting bracket, and the light source's illumination direction is downward.

2. The defective fabric detection camera light source bracket according to claim 1, characterized in that, The illumination direction of the light source forms an angle with the optical axis of the lens.

3. The defective fabric detection camera light source bracket according to claim 2, characterized in that, The angle between the illumination direction of the light source and the optical axis of the lens can be adjusted arbitrarily.

4. The defective fabric detection camera light source bracket according to claim 1, characterized in that, The light source extends in the left-right direction, and the width of the light source in the left-right direction is greater than the width of the lens in the left-right direction.

5. The defective fabric detection camera light source bracket according to claim 4, characterized in that, The distances from the left and right sides of the light source to the camera are equal.

6. The defective fabric detection camera light source bracket according to claim 1, characterized in that, The bottom of the light source mounting bracket is provided with a light source mounting groove extending in the left-right direction, and the light source is disposed in the light source mounting groove.

7. The defective fabric detection camera light source bracket according to claim 6, characterized in that, The defective fabric detection camera light source bracket also includes: A pressure cap is detachably connected to the bottom of the light source mounting bracket, and the pressure cap abuts against the bottom of the light source to confine the light source in the light source mounting groove.

8. The defective fabric detection camera light source bracket according to claim 1, characterized in that, The defective fabric detection camera light source bracket also includes: A glass plate is placed over the front end of the camera mounting hole; A driver is provided on the camera mounting bracket; A scraper blade is connected to the driver, which drives the scraper blade to move on the front side of the glass sheet.

9. The defective fabric detection camera light source bracket according to claim 1, characterized in that, Both the camera mounting bracket and the light source mounting bracket are plate-shaped structures.

10. A defective fabric detection system for circular knitting machines, characterized in that, Includes a light source bracket for a defective fabric detection camera as described in any one of claims 1 to 9.

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