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CN-122016792-A - Oxford fabric density laser detection device and method

CN122016792ACN 122016792 ACN122016792 ACN 122016792ACN-122016792-A

Abstract

The invention discloses a laser detection device and method for oxford fabric density, and belongs to the field of oxford detection. The invention discloses an oxford fabric density laser detection device, which comprises a top plate, a movable frame sliding on the top plate, two sliding blocks connected with the bottom of the movable frame in a sliding manner, a vertical plate fixedly connected with the bottom of the movable frame, a mounting plate arranged at the bottom of the vertical plate, a laser emitter arranged in the middle of the mounting plate, signal receiving cameras obliquely arranged at two sides of the mounting plate, fixing blocks arranged at two sides of the sliding blocks, a connecting block connected with the bottom of the fixing blocks in a sliding manner, and a supporting plate arranged at the bottom of the connecting block and a flattening roller rotationally connected with the supporting plate.

Inventors

  • WU XIAOHAI
  • WANG YONGMING
  • GU CHUNRONG

Assignees

  • 吴江市振海纺织品有限公司

Dates

Publication Date
20260512
Application Date
20260313

Claims (10)

  1. 1. The utility model provides an oxford fabric density laser detection device, includes roof (1), its characterized in that still includes: The movable frame (2) is arranged on the top plate (1) in a sliding manner, and two sliding blocks (3) are connected to the bottom of the movable frame (2) in a sliding manner; the device comprises a vertical plate (205) fixedly connected to the bottom of a movable frame (2), wherein a mounting plate (206) is arranged at the bottom of the vertical plate (205), a laser emitter (207) is arranged in the middle of the mounting plate (206), and signal receiving cameras (208) which are obliquely arranged and matched with the laser emitter (207) are arranged on two sides of the mounting plate (206); both sides of slider (3) all are provided with fixed block (302), the bottom sliding connection of fixed block (302) has connecting block (305), the bottom of connecting block (305) is equipped with backup pad (306), rotate on backup pad (306) and be connected with flattening roller (307).
  2. 2. The oxford fabric density laser detection device according to claim 1, wherein three groups of supporting lugs (201) are fixedly arranged at the bottom of the movable frame (2), a group of middle supporting lugs (201) are rotatably connected with threaded rods (203), limiting rods (204) are arranged between two groups of supporting lugs (201) on two sides, threads at two ends of the threaded rods (203) are opposite in rotation direction, and two sliding blocks (3) are respectively in threaded connection with two ends of the threaded rods (203).
  3. 3. The oxford fabric density laser detection device according to claim 2, wherein a motor (202) is arranged on one supporting lug (201) in the middle group, the threaded rod (203) is arranged at the output end of the motor (202), a supporting rod (301) is arranged on the outer wall of the sliding block (3), and the supporting rod (301) is connected to the limiting rod (204) in a sliding mode.
  4. 4. An oxford fabric density laser detection device according to claim 3, wherein the fixing block (302) is fixedly arranged at one end of the supporting rod (301) far away from the sliding block (3), an inserting block (303) is arranged at the bottom of the fixing block (302), a sliding plate (304) is arranged at the bottom of the inserting block (303), and the sliding plate (304) is slidably connected in the connecting block (305).
  5. 5. The oxford fabric density laser detection device according to claim 4, wherein two guide posts (308) are fixedly arranged in the connecting block (305), the sliding plate (304) is slidably connected to the guide posts (308), springs (309) are respectively connected between the upper end and the lower end of the sliding plate (304) and the inner walls of the upper side and the lower side of the connecting block (305), the springs (309) are sleeved on the outer walls of the guide posts (308), a plurality of thin rods (310) are fixedly connected to the connecting block (305), and the thin rods (310) are slidably inserted in the fixed blocks (302).
  6. 6. The oxford fabric density laser detection device according to claim 1, wherein the connecting block (305) is provided with an extending plate (4), the extending plate (4) is provided with a connecting shaft (401), the connecting shaft (401) is rotatably connected with an inclined plate (402), the inclined plate (402) is fixedly provided with an inclined block (403), and the inclined block (403) is provided with a pressing plate (404).
  7. 7. The oxford fabric density laser detection device according to claim 6, wherein a limiting block (405) is slidably connected to the inclined block (403), a plurality of elastic members (406) are arranged between the limiting block (405) and the inner wall of the inclined block (403), a pressure switch (407) is fixedly arranged on the inner wall of the limiting block (405), a heating plate (408) is arranged in the pressing plate (404), and the pressure switch (407) is electrically connected with the heating plate (408).
  8. 8. The oxford fabric density laser detection device according to claim 1, wherein the laser transmitter (207) is provided with a plurality of linearly distributed laser transmitters, the signal receiving cameras (208) are provided with two groups, the two groups of signal receiving cameras (208) are respectively arranged at two sides of the laser transmitter (207), and each group of signal receiving cameras (208) is provided with a plurality of linearly distributed laser transmitters.
  9. 9. The oxford fabric density laser detection device according to claim 1, wherein the top plate (1) is provided with an air cylinder (103), the movable frame (2) is arranged at the output end of the air cylinder (103), the outer wall of the top plate (1) is fixedly provided with a plurality of transverse plates (101), and the bottoms of the transverse plates (101) are provided with supporting legs (102).
  10. 10. An oxford fabric density laser detection method, comprising the oxford fabric density laser detection device according to any one of claims 1-9, characterized by comprising the following steps: Step one, placing the prepared oxford fabric below a device; Step two, controlling the moving frame (2) to move downwards so that the flattening roller (307) contacts with oxford fabric; Continuously controlling the moving frame (2) to move downwards so as to generate pressure between the flattening roller (307) and the oxford fabric; controlling the two sliding blocks (3) to be mutually far away at the same time, and driving the two flattening rollers (307) to be mutually far away so as to flatten oxford fabric; and fifthly, starting a laser emitter (207) to emit stable and uniform line laser to the surface of the flat oxford fabric, forming optical signals with alternate brightness and periodical change after the laser is reflected by the surface of the oxford fabric, acquiring the reflected optical signals in real time by a signal receiving camera (208) to convert an optical image into an electric signal and a digital image, and finally calculating the number of yarns in unit length, namely the fabric density by a control system in an external control panel through an image processing algorithm to identify the number of bright and dark periods.

Description

Oxford fabric density laser detection device and method Technical Field The invention relates to the technical field of oxford fabric detection, in particular to a device and a method for detecting oxford fabric density by laser. Background The oxford fabric is used as a textile fabric with compact structure, wear resistance and durability, is widely applied to the fields of bags, outdoor equipment, automotive interiors and the like, the warp and weft yarn linear density is a core index for determining the mechanical property, appearance texture and specification compliance of products, and currently, the non-contact density detection technology based on laser scattering and imaging has the advantages of high detection speed, high precision, no damage and the like, and gradually replaces the traditional manual yarn counting and microscopic detection, so that the detection becomes the main technical direction of the oxford fabric density detection. However, in the practical application of the existing laser detection technology, the oxford sample is directly placed in the to-be-detected area for direct detection, which easily causes insufficient spreading of the oxford sample, and the key bottleneck affecting the detection precision and stability is specifically expressed as follows: When laser irradiation, the original regular concave-convex structure of the yarns is destroyed, the periodical wave crest and wave trough shape of the reflected light signals is disordered, the system can not accurately identify the boundary of a single yarn, the overlapped yarns at the folds are easily misjudged as the single yarns, or the yarns overlapped due to bending are missed to be judged, the deviation of density detection data and the true value is finally caused to be too large, and the density detection data and the true value can not be used as the reliable basis for judging the qualified products, meanwhile, the concave-convex surface can cause the repeated reflection and scattering of the laser, a large amount of noise signals are introduced, the contrast ratio of the yarns and gaps is further reduced, and the repeatability and the stability of density calculation are obviously reduced. Disclosure of Invention The invention aims at solving the problems existing in the prior art and provides an oxford fabric density laser detection device and method. In order to achieve the above purpose, the present invention adopts the following technical scheme: The utility model provides an oxford fabric density laser detection device, includes the roof, still includes: the movable frame is arranged on the top plate in a sliding manner, and two sliding blocks are connected to the bottom of the movable frame in a sliding manner; the vertical plate is fixedly connected to the bottom of the movable frame, the bottom of the vertical plate is provided with a mounting plate, the middle position of the mounting plate is provided with a laser emitter, and two sides of the mounting plate are provided with signal receiving cameras which are obliquely arranged and matched with the laser emitter; The two sides of the sliding block are provided with fixed blocks, the bottoms of the fixed blocks are connected with connecting blocks in a sliding way, the bottom of connecting block is equipped with the backup pad, rotate in the backup pad and be connected with the flattening roller. Preferably, the bottom of the movable frame is fixedly provided with three groups of supporting lugs, a group of supporting lugs in the middle is rotationally connected with a threaded rod, a limit rod is arranged between two groups of supporting lugs on two sides, threads at two ends of the threaded rod are opposite in rotation direction, and two sliding blocks are respectively in threaded connection with two ends of the threaded rod. Further, be equipped with the motor on one of them supporting lug that is located middle a set of, the threaded rod sets up the output at the motor, be equipped with the bracing piece on the outer wall of slider, bracing piece sliding connection is on the gag lever post. Further, the fixed block is fixedly arranged at one end of the supporting rod far away from the sliding block, an inserting block is arranged at the bottom of the fixed block, a sliding plate is arranged at the bottom of the inserting block, and the sliding plate is slidably connected in the connecting block. Further, the connecting block internal fixation is provided with two guide posts, slide sliding connection is on the guide post, the upper and lower both ends of slide respectively with the upper and lower both sides inner wall of connecting block between all be connected with the spring, the spring housing is established on the outer wall of guide post, fixedly connected with a plurality of thin poles on the connecting block, thin pole slip grafting is in the fixed block. Preferably, the connecting block is provided with an extending plate, the extending plate