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CN-121976345-A - Double-layer jacquard fabric interlayer weaving process and double-vision artistic effect realization method

CN121976345ACN 121976345 ACN121976345 ACN 121976345ACN-121976345-A

Abstract

The invention provides a double-layer jacquard fabric interlayer weaving process and a double-visual artistic effect realization method, which comprises the following steps of providing warp yarns, weft yarns and interlayer connecting yarns which are matched with double-layer jacquard, wherein the breaking strength of the interlayer connecting yarns is not lower than 3.2cN/dtex, importing surface layer jacquard pattern data and inner layer jacquard pattern data into a pattern weaving CAD system, presetting yarn interweaving threshold values and pattern edge transition parameters of interlayer connecting areas, generating a collaborative weaving data table for connecting surface and inner layer jacquard patterns with an interlayer, marking corresponding interweaving areas of the surface layer and the inner layer jacquard patterns, and enabling the collaborative weaving data table to contain intervention time and interweaving frequency parameters of connecting yarns of each area.

Inventors

  • LI MINGJUAN

Assignees

  • 武汉纺织大学

Dates

Publication Date
20260505
Application Date
20260212

Claims (8)

  1. 1. The double-layer jacquard fabric interlayer weaving process and the double-vision artistic effect realization method are characterized by comprising the following steps: providing warp yarns, weft yarns and interlayer connecting yarns which are suitable for double-layer jacquard, wherein the breaking strength of the interlayer connecting yarns is not lower than 3.2cN/dtex, and the twist is 1.1-1.4 times of the twist of the surface warp yarns; Importing surface layer jacquard pattern data and inner layer jacquard pattern data into a pattern weaving CAD system, presetting a yarn interweaving threshold value and pattern edge transition parameters of an interlayer connection region, generating a collaborative weaving data table for connecting the surface layer jacquard pattern and the inner layer jacquard pattern, marking corresponding interweaving regions of the surface layer pattern and the inner layer pattern, and enabling the collaborative weaving data table to contain intervention time and interweaving frequency parameters of connecting yarns of each region; The collaborative weaving data table is led into weaving equipment to carry out a double-layer jacquard interlayer weaving process, the weaving time period of the weaving process comprises a first weaving time period and a second weaving time period, in the first weaving time period, a heald frame of the weaving equipment drives surface warp yarns and weft yarns to interweave along a first movement track to form a surface jacquard structure, and interlayer connecting yarns are simultaneously inserted into interweaved nodes of the surface warp yarns and the inner warp yarns according to preset frequency to form a punctiform connecting structure; after the weaving is finished, the fabric is shaped and finished, floating yarns generated in the weaving process are removed, the integrity of the jacquard patterns of the surface layer and the inner layer and the connection firmness of the interlayer are checked through a visual detection module, the dual visual effect is ensured to be free from cutting and connecting points to be exposed, The first motion track is a track which is uniformly descended after the heald frame ascends to a preset high position, the second motion track is a track which is uniformly ascended after the heald frame descends to a preset low position, the surface layer jacquard structure and the inner layer jacquard structure are symmetrically matched through the bidirectional motion track switching of the heald frame, the interweaving depth of interlayer connecting yarns is controlled to be 0.3-0.8mm, the spacing range of the point connecting structures is 4-7mm, the length of the linear connecting structures is matched with the edge curvature of the flower type, and the joint of the linear connecting structures and the point connecting structures is free of yarn stacking.
  2. 2. The method according to claim 1, characterized in that the difference between the high heald frame position of the first motion profile and the low heald frame position of the second motion profile is in the range of 5-8mm, the time length of the first weaving period and the second weaving period being the same.
  3. 3. The method of claim 1, wherein the weaving period comprises one or more of the first weaving period and one or more of the second weaving period, and the first weaving period and the second weaving period are alternately arranged, and when two adjacent weaving periods are switched, the interweaving frequency of the interlayer connecting yarns is synchronously adjusted, and the adjustment amplitude is +/-20% of the initial frequency.
  4. 4. The method according to claim 3, wherein the total length of time of one or more first weaving periods is the same as the total length of time of one or more second weaving periods, and/or the ratio of the total number of point-like connection structures to the total number of linear connection structures is in the range of 3:1 to 5:1.
  5. 5. The method according to claim 4, wherein the surface jacquard structure and the inner jacquard structure are mirror images of each other, the surface warp tension is controlled to be 9-13cN, the inner warp tension is reduced by 25-35% compared with the surface warp tension, and the tension of the interlayer connecting yarns is always maintained to be 80-90% of the surface warp tension.
  6. 6. The method according to claim 5, wherein the weaving device is a rapier loom or a flat knitting machine, the interlayer connecting yarn is neutral yarn similar to the ground color of the surface jacquard, and the linear density is 70% -85% of the density of the surface warp yarn.
  7. 7. The method of claim 1, wherein the interweaving frequency of the interlayer connecting yarns is interweaving every 3-5 picks during the first weaving period and every 2-3 picks during the second weaving period.
  8. 8. The method according to claim 1, wherein the misalignment of the jacquard pattern of the surface layer and the inner layer is not more than 0.15mm when the visual detection module is used for verification, and the exposed area of the connecting point is not more than 0.5% of the total area of the fabric.

Description

Double-layer jacquard fabric interlayer weaving process and double-vision artistic effect realization method Technical Field The invention relates to the technical field of textile weaving, in particular to a double-layer jacquard interlayer weaving process and a double-vision artistic effect realization method. Background The double-layer jacquard fabric can realize positive and negative double-vision artistic effects by virtue of the independent jacquard design of the surface layer and the inner layer, and meanwhile, the sandwich structure can improve the thickness sense, the heat retention and the wear resistance of the fabric, so that the double-layer jacquard fabric is widely applied to the textile field. In the existing double-layer jacquard fabric interlayer weaving process, the problems of poor adaptability of an interlayer connecting structure and a jacquard structure, easy exposure of connecting points, insufficient alignment precision of surface and inner layer jacquard and the like commonly exist, so that double-visual effect is split, and the fabric is poor in forming stability. The prior art mainly adopts a single connection mode (such as full-point connection or full-line connection) to finish interlayer fixation, does not dynamically adjust connection structures and interweaving parameters according to pattern region characteristics (pattern density and edge transition form), is easy to cause the problems of insufficient connection strength of pattern dense regions and exposed connection points of edge transition regions, and meanwhile, the heald frame is fixed in motion track, the adaptability of a surface layer jacquard structure and an inner layer jacquard structure is poor, pattern dislocation is easy to generate, double-vision symmetry is damaged, and in addition, the parameters of connecting yarns are not matched with warp yarn parameters of the surface layer and the inner layer, so that uneven stress and yarn stacking of the interlayer are easy to be caused, and the visual effect and fabric durability are further influenced. Aiming at the problems, the existing improvement scheme focuses on hardware structure upgrading, not only increases equipment investment cost, but also is difficult to adapt to the large-scale application of the existing weaving equipment, and lacks a weaving process which is based on the pure technical transformation of the existing equipment, can dynamically adapt to jacquard characteristics and gives consideration to connection firmness and double visual effect integrity. Therefore, developing a double-layer jacquard fabric interlayer braiding process with strong adaptability, excellent visual effect and stable structure becomes an urgent need in the current industry. Disclosure of Invention The invention aims to solve the technical problems of exposed connection points, staggered patterns, insufficient interlayer connection strength and double visual effect splitting in the existing double-layer jacquard fabric interlayer weaving process, and provides a process method based on pure technical transformation of the existing tatting CAD system and weaving equipment, which realizes concealed and firm interlayer connection, accurate adaptation of surface and inner layer jacquard, ensures the integrity and consistency of double visual artistic effects, reduces equipment transformation cost and is suitable for large-scale production. In order to solve the technical problems, the application adopts the technical scheme that the double-layer jacquard interlayer weaving process and the double-vision artistic effect realization method are provided, and the method comprises the following steps: providing warp yarns, weft yarns and interlayer connecting yarns which are suitable for double-layer jacquard, wherein the breaking strength of the interlayer connecting yarns is not lower than 3.2cN/dtex, and the twist is 1.1-1.4 times of the twist of the surface warp yarns; Importing surface layer jacquard pattern data and inner layer jacquard pattern data into a pattern weaving CAD system, presetting a yarn interweaving threshold value and pattern edge transition parameters of an interlayer connection region, generating a collaborative weaving data table for connecting the surface layer jacquard pattern and the inner layer jacquard pattern, marking corresponding interweaving regions of the surface layer pattern and the inner layer pattern, and enabling the collaborative weaving data table to contain intervention time and interweaving frequency parameters of connecting yarns of each region; The collaborative weaving data table is led into weaving equipment to carry out a double-layer jacquard interlayer weaving process, the weaving time period of the weaving process comprises a first weaving time period and a second weaving time period, in the first weaving time period, a heald frame of the weaving equipment drives surface warp yarns and weft yarns to interweave along a first mov