A method for online regulation of structure of chenille yarn and special chenille yarn and spinning system

Abstract

This invention relates to an online control method for the morphological structure of chenille yarn. By adjusting the output of the decorative yarn, the core yarn, and the spindle rotation speed, the method achieves online control over the change in the arrangement density of the chenille decorative yarn. Furthermore, based on the change in the linear density of the chenille yarn, the method also achieves online control over the twist of the chenille yarn. Different output states, such as decorative yarn output and pause, are used to control the yarn, resulting in ball-shaped chenille yarn, brush-shaped chenille yarn, and slub chenille yarn. A corresponding spinning system is designed, introducing core yarn output rollers and decorative yarn feed rollers for independent control. Combined with a twisting and winding system, a spinning twist stress balance is designed to synergistically control various morphological structural parameters of the chenille yarn. This results in a wider range of morphological structural parameter control, a richer variety of morphological structures, and special chenille yarns that are less prone to shedding.

Description

Technical Field

[0001] This invention relates to an online control method for the morphology and structure of chenille yarn, as well as special chenille yarn and spinning system, belonging to the field of spinning technology. Background Technology

[0002] Chenille yarn is made by sandwiching a vertically fed decorative yarn between two intertwined core yarns, distributing it in a spiral pattern along its length to create a caterpillar-like appearance. Chenille yarn is fluffy, soft to the touch, and fabrics made from it have a strong three-dimensional feel and excellent warmth. Chenille yarn has a wide range of applications, including outerwear, interior decoration, and automotive interiors, and is often used to produce high-value-added specialty knitted and woven fabrics.

[0003] However, current chenille yarn spinning systems only use a pair of rollers to synchronously control the output of the finishing yarn and the core yarn, which limits the degree of freedom in mechanical control. They cannot stop the output of the finishing yarn to arrange it discontinuously on the core yarn, thus failing to form spherical or toothbrush-shaped chenille yarns. Furthermore, they cannot coordinately control the morphological and structural parameters of the chenille yarn, resulting in a limited range of adjustable parameters and a relatively simple variety of shapes and structures. Therefore, overcoming the limitations of traditional technology to spin fancy chenille yarns with variations in shape, structure, and color sequence, and achieving flexible design and diversified production of chenille yarn, is key to expanding the application areas of chenille yarn products and enhancing the core competitiveness of chenille yarn apparel products.

[0004] Furthermore, existing chenille spinning machines have the problem of difficulty in controlling the shape and structure of the spun chenille yarn, but no effective solution has yet been proposed. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to provide an online control method for the morphology and structure of chenille yarn, which controls the changes in the output of decorative yarn, core yarn, and spindle rotation speed. It not only achieves online control of the change in the arrangement density of chenille decorative yarn, but also achieves online control of the change in the twist of chenille yarn based on the change in the linear density of chenille yarn.

[0006] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: The present invention designs an online control method for the morphology and structure of chenille yarn. The decorative yarn is wound onto the spacer plate by a rotating head. The friction between the rotating feed roller and the surface of the spacer plate pushes the decorative yarn wound on the spacer plate to be cut by a blade. The cut decorative yarn intersects with the core yarn in a perpendicular posture for twisting and winding, thereby obtaining chenille yarn. During the spinning process, the online control method includes the following steps:

[0007] Step A. Based on the fact that when only the rotary head speed is changed, the density of the decorative yarn in the obtained chenille yarn is directly proportional to the change in rotary head speed; when only the core yarn output speed is changed, the density of the decorative yarn in the obtained chenille yarn is inversely proportional to the change in core yarn output speed; and when only the decorative yarn output speed is changed, the density of the decorative yarn in the obtained chenille yarn is directly proportional to the change in decorative yarn output speed, the change in the density of the decorative yarn in the obtained chenille yarn, Δλ, is constructed as follows:

[0008]

[0009] Where λ represents the density of the decorative yarn arrangement in the obtained chenille yarn, ω r Indicates the rotational speed of the rotary head, Δω r V represents the change in the rotational speed of the rotary head. r Indicates the output speed of the decorative yarn, ΔV r V represents the change in the output speed of the decorative yarn. x Indicates the core yarn output speed, ΔV x η represents the change in the output speed of the core yarn, and η represents the number of decorative yarns simultaneously input into the obtained chenille yarn;

[0010] Step B. Based on the change in the density of the decorative yarn arrangement in the chenille yarn Δλ, for the alternating execution of the first preset duration of the decorative yarn output stopping, and the second preset duration of the decorative yarn output starting from V... r =0 starting with ΔV r The positive increment is used to change the output, and the change in the first discontinuous arrangement density Δλ' of the decorative yarn in the obtained chenille yarn is constructed as follows:

[0011]

[0012] Meanwhile, based on the change in the arrangement density Δλ of the chenille yarn, for the alternating execution of the third preset duration of the interior yarn with a speed lower than the preset lower limit threshold of the yarn output speed, V' is used. r Outputting and pre-setting the fourth duration of interior decoration by V' r Starting with ΔV r The positive increment is used to change the output, and the change in the second discontinuous arrangement density of the decorative yarn in the obtained chenille yarn, Δλ”, is constructed as follows:

[0013]

[0014] Step C. Based on the density change Δλ' of the first discontinuous arrangement of the decorative yarn in the chenille yarn and the density change Δλ' of the second discontinuous arrangement of the decorative yarn, and according to the distribution law of the preset first time during the spinning process, the distribution law of the spherical chenille yarn is controlled; the rotation speed of the spinning head is controlled to control the number of spherical decorative yarn ends in the obtained chenille yarn; the preset first time is controlled to control the length of the undecorative yarn segment in the obtained chenille yarn.

[0015] As a preferred technical solution of the present invention: Step C further includes adjusting the distance between the spacer plate and the rotating head and the blade to control the length of the decorative yarn and the diameter of the obtained chenille yarn. When the width of the spacer plate is changed, the length of the decorative yarn in the obtained chenille yarn is directly proportional to the change in the width of the spacer plate. Therefore, the change in the length of the decorative yarn in the obtained chenille yarn, Δζ, is constructed as follows:

[0016] Δζ=Δδ+ε (4)

[0017] Where ζ is the length of the decorative yarn, δ is the width of the spacer, and ε is the thickness of the spacer.

[0018] As a preferred technical solution of the present invention: Step C further includes adjusting the twist of different yarn segments during the spinning process of different types of chenille yarn to achieve twist stress balance. Specifically, for the spinning process of ball chenille yarn or brush chenille yarn, spinning is performed according to the first discontinuous arrangement density change Δλ' of the decorative yarn in the chenille yarn. Within a preset first time period, the core yarn output speed is adjusted to be lower than the preset lower threshold of the core yarn output speed, and the spindle speed during twisting and winding operations is higher than the preset upper threshold of the spindle speed, thereby achieving the matching of the twist of the corresponding yarn segments in the ball chenille yarn; and within a preset second time period, the core yarn output speed is adjusted to be higher than the preset upper threshold of the core yarn output speed, and the spindle speed during twisting and winding operations is lower than the preset lower threshold of the spindle speed, thereby achieving the matching of the twist of the corresponding yarn segments in the ball chenille yarn; wherein, the preset second time period in the ball chenille yarn spinning process is shorter than the preset second time period in the brush chenille yarn spinning process;

[0019] For the spinning process of slub chenille yarn, spinning is carried out according to the second discontinuous arrangement density change Δλ” of the decorative yarn in the chenille yarn. Within a preset third time period, the core yarn output speed is adjusted to be lower than the preset lower threshold of core yarn output speed, and the spindle speed during twisting and winding operations is higher than the preset upper threshold of spindle speed. Within a preset fourth time period, the core yarn output speed is adjusted to be higher than the preset upper threshold of core yarn output speed, and the spindle speed during twisting and winding operations is lower than the preset lower threshold of spindle speed, so as to achieve the matching of the twist of the corresponding yarn segment in the slub chenille yarn.

[0020] As a preferred technical solution of the present invention: For the spinning process of ball-shaped chenille yarn, by varying the matching of the stopping time and the feeding time of the decorative yarn, the radius and spacing of the chenille decorative yarn balls are controlled. Spinning is performed according to the first discontinuous arrangement density change Δλ' of the decorative yarn in the chenille yarn. The resulting ball-shaped chenille yarn has a decorative yarn arrangement density λ in different yarn segments. i Length ζ i The corresponding information is as follows:

[0021]

[0022] Where i represents the sequence number of each different yarn segment in the ball-shaped chenille yarn, 2 represents the two types of yarn segments in the ball-shaped chenille yarn: the undecorated yarn segment and the ball-shaped decorative yarn segment. The ball-shaped decorative yarn segment corresponds to the length change segment of the decorative yarn perpendicular to the core yarn direction under the control of the rotary head, as well as the combination segments of sparse and dense with short and long lengths under the ball-shaped decorative yarn segment.

[0023] If, during the spinning process of brushed chenille yarn, the length and spacing of the chenille yarn trim segments are adjusted by varying the matching of the stop-feeding and feed-feeding yarn durations, and spinning is performed according to the first discontinuous arrangement density change Δλ' of the trim yarn in the chenille yarn, where the preset first duration is equal to the preset second duration (i.e., the length of the yarn segment corresponding to the preset first duration is equal to the length of the yarn segment corresponding to the preset second duration), then the arrangement density λ of the trim yarn in different yarn segments of the obtained spherical chenille yarn will be... j The corresponding information is as follows:

[0024]

[0025] Where j represents the sequence number of each different yarn segment in the brushed chenille yarn, and 2 represents the two types of yarn segments in the brushed chenille yarn: the undecorated yarn segment and the brush-shaped decorative yarn segment.

[0026] If, during the spinning process of slub chenille yarn, the height, length, and arrangement density of the chenille slub are controlled by varying the feed speed of the decorative yarn, and spinning is performed according to the second discontinuous arrangement density change Δλ of the decorative yarn in the chenille yarn, and the preset third time length is greater than the preset fourth time length, and the length of the decorative yarn perpendicular to the core yarn under the preset fourth time length is greater than the length of the decorative yarn perpendicular to the core yarn under the preset third time length, then the arrangement density λ of the decorative yarn in different yarn segments of the obtained slub chenille yarn will be... k Length ζ k The corresponding information is as follows:

[0027]

[0028] Where k represents the sequence number of each different yarn segment in the slub chenille yarn, and 2 represents the two yarn segments in the slub chenille yarn that correspond to the preset third and preset fourth durations, respectively.

[0029] Corresponding to the above, the technical problem to be solved by the present invention is to provide special chenille yarns that apply an online control method for the chenille yarn morphology and structure, thereby controlling the changes in the output of decorative yarn, core yarn, and spindle rotation speed to obtain spherical chenille yarn, brush chenille yarn, and slub chenille yarn.

[0030] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: The present invention designs a special chenille yarn with an online control method for the morphology and structure of chenille yarn, including spherical chenille yarn, brush chenille yarn, and slub chenille yarn obtained by spinning. In the spherical chenille yarn structure, the spherical decorative yarns are discontinuously arranged on the core yarn, and each exposed core yarn segment and each spherical decorative yarn stacked by the decorative yarns are arranged alternately to form a chenille yarn with discontinuously changing linear density.

[0031] In the brushed chenille yarn structure, the brushed decorative yarns are arranged discontinuously on the core yarn. Each section of the exposed core yarn and each section of the brushed decorative yarn are arranged alternately to form a brushed chenille yarn with a discontinuous change in linear density. The brushed decorative yarns are composed of decorative yarns of the same length arranged at a uniform density.

[0032] In the slub chenille yarn structure, slub decorative yarns are continuously arranged on the core yarn. Based on the base yarn formed by the core yarn and decorative yarns, slub yarn segments are distributed at intervals along the base yarn according to a preset distribution interval rule, forming slub chenille yarn with continuously varying linear density. The arrangement density of the slub yarn segments is greater than that of the base yarn, and the length of the decorative yarn in the slub yarn segment is greater than the length of the base yarn.

[0033] Corresponding to the above, the technical problem to be solved by the present invention is to provide a spinning system for realizing online control of the morphology and structure of chenille yarn, introducing a core yarn output roller, connecting it with a decorative yarn feed roller, and controlling the changes in decorative yarn output, core yarn output, and spindle rotation speed to efficiently realize the spinning of chenille yarn.

[0034] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: The present invention designs a spinning system for online control of the morphology and structure of chenille yarn, based on a rotary head, a spacer, and a blade, and further includes a first decorative yarn feeding system, a first core yarn output system, and a first twisting and winding system. The rotary head and one end of the spacer are opposite to each other. The decorative yarn is fed into the rotary head and wound onto the spacer under the control of the rotary head. The other end of the spacer is opposite to the blade edge. The first decorative yarn feeding system and the first core yarn output system are both located between the spacer and the blade. On the same side of the blade, the first decorative yarn feeding system includes a decorative yarn feeding roller and a feeding roller that corresponds to and rotates synchronously with the decorative yarn feeding roller. The first core yarn output system includes a core yarn output roller and a feeding roller that corresponds to and rotates synchronously with the core yarn output roller. In the first decorative yarn feeding system, the rotating surface of the decorative yarn feeding roller contacts the surface on the same side of the blade. As the decorative yarn feeding roller rotates, friction between it and the surface of the spacer plate pushes the decorative yarn wound on the spacer plate towards the blade blade and cuts it into two pieces by the blade blade. In this section, the position between the decorative yarn feed roller and the corresponding feed roller corresponds to the position of the blade edge. A portion of the decorative yarn cut by the blade edge is fed into the position between the decorative yarn feed roller and the corresponding feed roller. The upper and lower core yarns in the core yarn are connected at the position between the core yarn output roller and the corresponding feed roller, and are conveyed by the rotation of the core yarn output roller and the corresponding feed roller. The upper core yarn output by the first core yarn output system bypasses the groove on the outer periphery of the decorative yarn feed roller in the first decorative yarn feeding system, and is then fed into the decorative yarn feed roller and the corresponding feed roller. The lower core yarn, output from the first core yarn output system, bypasses the groove on the outer periphery of the feeding roller in the first decorative yarn feeding system and is then fed into the position between the decorative yarn feeding roller and the corresponding feeding roller. The decorative yarn, upper core yarn, and lower core yarn fed into the position between the decorative yarn feeding roller and the corresponding feeding roller are perpendicular to each other. After passing through the position between the decorative yarn feeding roller and the corresponding feeding roller, they are fed into the first twisting and winding system. The spindle and the ring rail lifting device in the first twisting and winding system twist the decorative yarn, upper core yarn, and lower core yarn to form chenille yarn.

[0035] As a preferred embodiment of the present invention, it further includes a second decorative yarn feeding system, a second core yarn output system, and a second twisting and winding system, which are structurally identical to the first decorative yarn feeding system, the first core yarn output system, and the first twisting and winding system, respectively. The second decorative yarn feeding system and the second core yarn output system are both located on the same side of the spacer plate and the blade edge. The arrangement structure of the second decorative yarn feeding system and the second core yarn output system is the same as that of the first decorative yarn feeding system and the first core yarn output system. The decorative yarn fed by the roller in the second decorative yarn feeding system rotates and pushes the decorative yarn wound on the spacer plate to be cut into two parts by the blade edge. The other part of the decorative yarn cut by the blade edge is then fed into the second decorative yarn feeding system. The system is positioned between the decorative yarn feeding roller and the corresponding feeding roller. The second core yarn output system connects to the upper and lower core yarns of another core yarn and feeds the upper and lower core yarns of the other core yarn into the position between the decorative yarn feeding roller and the corresponding feeding roller in the second decorative yarn feeding system in the same manner. The decorative yarn and the upper and lower core yarns fed into the position between the decorative yarn feeding roller and the corresponding feeding roller in the second decorative yarn feeding system are perpendicular to each other. After passing through the position between the decorative yarn feeding roller and the corresponding feeding roller in the second decorative yarn feeding system, they are fed into the second twisting and winding system. The spindle and the ring rail lifting device in the second twisting and winding system twist the decorative yarn, the upper core yarn, and the lower core yarn to form chenille yarn.

[0036] As a preferred embodiment of the present invention, it further includes a host computer, a PLC controller, an encoder, and servo drivers that are respectively connected to the rotary head motor, the decorative yarn feeding roller motor, the core yarn output roller motor, the spacer motor, the spindle motor, and the ring rail lifting device motor. The host computer is used to send the spinning process parameters of each device to the PLC controller, and the PLC controller converts the received instructions into analog data quantities that can be recognized by the corresponding servo drivers and sends them to the corresponding servo drivers. Then, each servo driver controls the motor of its connected device to work. The encoder is connected to the rotary head, the decorative yarn feeding roller, the core yarn output roller, the spacer, the spindle, and the ring rail lifting device, and is used to collect the status parameters of each connected device in real time and feed them back to the PLC controller.

[0037] The online control method for the morphology and structure of chenille yarn and the special chenille yarn and spinning system described in this invention have the following technical advantages compared with the prior art:

[0038] (1) The present invention designs an online control method for the morphological structure of chenille yarn. By controlling the changes in the output of the decorative yarn, the output of the core yarn, and the rotation speed of the spindle, the change in the arrangement density of the chenille decorative yarn is controlled online. Based on the change in the linear density of chenille yarn, the change in the twist of chenille yarn is controlled online. Different output states of decorative yarn output and pause are controlled to form ball chenille yarn, brush chenille yarn, and slub chenille yarn. A corresponding spinning system is designed, and the core yarn output roller and the decorative yarn feeding roller are introduced to be independently controlled. Combined with the twisting and winding system, the spinning twist stress balance is designed to coordinately control the various morphological structure parameters of chenille yarn, so that the range of control of the morphological structure parameters of the spun chenille yarn is larger, the types of morphological structures are richer, and the special chenille yarn obtained by spinning is not easy to shed. Attached Figure Description

[0039] Figure 1 This invention relates to chenille yarn with temporal changes in morphology and structure under the application of the online control method for chenille yarn morphology and structure designed in this invention;

[0040] Figure 2 This is a schematic diagram of the structure of traditional chenille yarn;

[0041] Figure 3 This is a schematic diagram of the structure of chenille yarn with varying yarn arrangement density under the application of the online control method for the chenille yarn morphology and structure designed in this invention;

[0042] Figure 4 This invention relates to the online control method for the morphology and structure of chenille yarn, which produces spherical chenille yarn.

[0043] Figure 5 This invention relates to the online control method for the morphology and structure of chenille yarn, which is used to produce brush-like chenille yarn.

[0044] Figure 6 This is a schematic diagram of the structure of chenille yarn with varying twist and decorative yarn arrangement density under the application of the online control method for the chenille yarn morphology and structure designed in this invention.

[0045] Figure 7 This invention relates to the application of the online control method for the morphology and structure of chenille yarn designed in this invention, resulting in slub-shaped chenille yarn.

[0046] Figure 8 This is a schematic diagram of the spinning system of the online control method for the morphology and structure of chenille yarn designed in this invention;

[0047] Figure 9 This is a schematic diagram of the servo drive-control module of the spinning system for the online control method of chenille yarn morphology and structure designed in this invention. Detailed Implementation

[0048] The specific embodiments of the present invention will be further described in detail below with reference to the accompanying drawings.

[0049] The present invention discloses an online control method for the morphology and structure of chenille yarn, as well as a special chenille yarn and spinning system. In practical applications, such as... Figure 8 As shown, the spinning system is based on a rotary head, a spacer plate, and a blade, and also includes a first decorative yarn feeding system, a first core yarn output system, and a first twisting and winding system. The rotary head and one end of the spacer plate are opposite each other. The decorative yarn is fed into the rotary head and wound onto the spacer plate under the control of the rotary head. The other end of the spacer plate is opposite to the blade edge. The first decorative yarn feeding system and the first core yarn output system are both located on the same side of the spacer plate and the blade edge. The first decorative yarn feeding system includes a decorative yarn feeding roller and a roller connected to the decorative yarn feeding roller. The first core yarn output system includes a core yarn output roller and a feed roller that corresponds to and rotates synchronously with the core yarn output roller. In the first decorative yarn feeding system, the rotating surface of the decorative yarn feed roller contacts the surface on the same side as the blade edge. As the decorative yarn feed roller rotates, friction between it and the surface of the spacer plate pushes the decorative yarn wound on the spacer plate towards the blade edge, where it is cut into two parts by the blade edge. The position between the decorative yarn feed roller and the corresponding feed roller... Corresponding to the position of the blade edge, a portion of the decorative yarn cut by the blade edge is fed into the position between the decorative yarn feeding roller and the corresponding feeding roller; the upper core yarn and the lower core yarn in the core yarn are connected at the position between the core yarn output roller and the corresponding feeding roller, and are conveyed under the rotation of the core yarn output roller and the corresponding feeding roller. The upper core yarn output by the first core yarn output system bypasses the groove on the outer periphery of the decorative yarn feeding roller in the first decorative yarn feeding system, and is then fed into the position between the decorative yarn feeding roller and the corresponding feeding roller, passing through the first core yarn... The lower core yarn output by the yarn output system bypasses the groove on the outer periphery of the feeding roller in the first decorative yarn feeding system, and is then fed into the position between the decorative yarn feeding roller and the corresponding feeding roller. The decorative yarn, upper core yarn, and lower core yarn fed into the position between the decorative yarn feeding roller and the corresponding feeding roller are perpendicular to each other. After passing through the position between the decorative yarn feeding roller and the corresponding feeding roller, they are fed into the first twisting and winding system. The spindle and the ring rail lifting device in the first twisting and winding system twist the decorative yarn, upper core yarn, and lower core yarn to form chenille yarn.

[0050] like Figure 8As shown, the spinning system also includes a second decorative yarn feeding system, a second core yarn output system, and a second twisting and winding system, which have the same structure as the first decorative yarn feeding system, the first core yarn output system, and the first twisting and winding system, respectively. The second decorative yarn feeding system and the second core yarn output system are both located on the same side of the spacer plate and the blade edge. The arrangement structure of the second decorative yarn feeding system and the second core yarn output system is the same as that of the first decorative yarn feeding system and the first core yarn output system. In the second decorative yarn feeding system, the rotating decorative yarn feeding roller pushes the decorative yarn wound on the spacer plate to be cut into two parts by the blade edge. The other part of the decorative yarn cut by the blade edge is fed into the second decorative yarn feeding system. The position between the decorative yarn feed roller and the corresponding feed roller; the second core yarn output system connects to the upper and lower core yarns of another core yarn, and feeds the upper and lower core yarns of the other core yarn into the position between the decorative yarn feed roller and the corresponding feed roller in the second decorative yarn feeding system in the same way. The decorative yarn and the upper and lower core yarns fed into the position between the decorative yarn feed roller and the corresponding feed roller in the second decorative yarn feeding system are perpendicular to each other, and after passing through the position between the decorative yarn feed roller and the corresponding feed roller in the second decorative yarn feeding system, they are fed into the second twisting and winding system. The spindle and the ring rail lifting device in the second twisting and winding system twist the decorative yarn, the upper core yarn, and the lower core yarn to form chenille yarn.

[0051] In application, the length of the decorative yarn (the diameter of the chenille yarn) is determined by factors such as the width of the spacer neck; the arrangement density of the decorative yarn is determined by factors such as the rotation speed of the spindle, the output speed of the core yarn, and the feed speed of the decorative yarn; the linear density of the chenille yarn is determined by factors such as the length of the decorative yarn and the arrangement density of the decorative yarn; and the twist of the chenille yarn is determined by factors such as the spindle speed and the output speed of the core yarn.

[0052] Regarding the feeding and output structures of the above-mentioned spinning system, as follows: Figure 9 As shown, a host computer, PLC controller, encoder, and servo drives are further designed to correspond to the motors of the rotary head motor, the decorative yarn feeding roller motor, the core yarn output roller motor, the spacer motor, the spindle motor, and the ring rail lifting device motor. The host computer is used to send the spinning process parameters of each device to the PLC controller, and the PLC controller converts the received instructions into analog data quantities that can be recognized by the corresponding servo drives and sends them to the corresponding servo drives. Then, each servo drive controls the motors of its connected device to work. The encoder is connected to the rotary head, the decorative yarn feeding roller, the core yarn output roller, the spacer, the spindle, and the ring rail lifting device to collect the status parameters of each connected device in real time and feed them back to the PLC controller. In application, the host computer can select a touch screen, and the PLC controller can coordinate the control to realize flexible spinning of multi-variety and multi-parameter chenille yarn.

[0053] Based on the design and construction of the above spinning system, this invention specifically designs an online control method for the morphology and structure of chenille yarn. The decorative yarn is wound onto the spacer plate by a rotating head. The friction between the rotating feed roller and the surface of the spacer plate pushes the decorative yarn wound on the spacer plate to be cut by a blade. The cut decorative yarn intersects with the core yarn in a vertical posture for twisting and winding, thereby obtaining chenille yarn. During the spinning process, the online control method includes performing the following steps A to C.

[0054] Step A. Based on the fact that when only the rotary head speed is changed, the density of the decorative yarn in the obtained chenille yarn is directly proportional to the change in rotary head speed; when only the core yarn output speed is changed, the density of the decorative yarn in the obtained chenille yarn is inversely proportional to the change in core yarn output speed; and when only the decorative yarn output speed is changed, the density of the decorative yarn in the obtained chenille yarn is directly proportional to the change in decorative yarn output speed, the change in the density of the decorative yarn in the obtained chenille yarn, Δλ, is constructed as follows:

[0055]

[0056] Where λ represents the density of the decorative yarn arrangement in the obtained chenille yarn, ω r Indicates the rotational speed of the rotary head, Δω r V represents the change in the rotational speed of the rotary head. r Indicates the output speed of the decorative yarn, ΔV r V represents the change in the output speed of the decorative yarn. x Indicates the core yarn output speed, ΔV x η represents the change in the core yarn output speed, and η represents the number of decorative yarns simultaneously input into the obtained chenille yarn.

[0057] Step B. Based on the change in the density of the decorative yarn arrangement in the chenille yarn Δλ, for the alternating execution of the first preset duration of the decorative yarn output stopping, and the second preset duration of the decorative yarn output starting from V... r =0 starting with ΔV r The positive increment is used to change the output, and the change in the first discontinuous arrangement density Δλ' of the decorative yarn in the obtained chenille yarn is constructed as follows:

[0058]

[0059] Meanwhile, based on the change in the arrangement density Δλ of the chenille yarn, for the alternating execution of the third preset duration of the interior yarn with a speed lower than the preset lower limit threshold of the yarn output speed, V' is used. r Outputting and pre-setting the fourth duration of interior decoration by V' r Starting with ΔV r The positive increment is used to change the output, and the change in the second discontinuous arrangement density of the decorative yarn in the obtained chenille yarn, Δλ”, is constructed as follows:

[0060]

[0061] Step C. Based on the density change Δλ' of the first discontinuous arrangement of the decorative yarn in the chenille yarn and the density change Δλ' of the second discontinuous arrangement of the decorative yarn, and according to the distribution law of the preset first time during the spinning process, the distribution law of the spherical chenille yarn is controlled; the distance between the spacer and the rotary head and the blade is controlled to control the length of the decorative yarn and the diameter of the obtained chenille yarn; the rotary head speed is controlled to control the number of spherical decorative yarns in the obtained chenille yarn; the preset first time is controlled to control the length of the undecorated yarn segment in the obtained chenille yarn. These factors will affect the linear density of the chenille yarn. In order to ensure that the decorative yarn of the chenille yarn can be firmly clamped in the core yarn and maintain good abrasion resistance, the twist of different yarn segments during the spinning process of different types of chenille yarn can be controlled to achieve a balance of twist stress.

[0062] Regarding step C above, adjusting the distance between the spacer plate and the rotating head and blade to control the length of the decorative yarn and the diameter of the obtained chenille yarn, in practical applications, when the width of the spacer plate is changed, the length of the decorative yarn in the obtained chenille yarn is directly proportional to the change in the width of the spacer plate. Therefore, the change in the length of the decorative yarn in the obtained chenille yarn, Δζ, is constructed as follows:

[0063] Δζ=Δδ+ε (4)

[0064] Where ζ is the length of the decorative yarn, δ is the width of the spacer, and ε is the thickness of the spacer.

[0065] The height of the spacer is adjusted by driving a servo motor. Raising the spacer position will reduce the width of the spacer, resulting in a shorter chenille yarn length; lowering the spacer position will increase the width of the spacer, resulting in a longer chenille yarn length. Therefore, the change in the length of the chenille yarn is adjusted by adjusting the height of the spacer, which in turn adjusts the change in the diameter of the chenille yarn. The change in the length (diameter) of the chenille yarn is also controlled by regulating the motion law of the spacer's raising and lowering.

[0066] Furthermore, regarding step C above, the twist of different yarn segments during the spinning process of different types of chenille yarn is adjusted to achieve twist stress balance. In practical applications, for ball-shaped chenille yarn, the decorative yarn feeding roller is switched between two states of slow and fixed frequency of pause and feeding. The decorative yarn is discontinuously piled on the core yarn. Under the twisting force of the core yarn, the discontinuously piled decorative yarn twists into spherical fiber clusters, like bubbles scattered on the core yarn, thus spinning ball-shaped chenille yarn. The core yarn is continuously output at a certain speed. By adjusting the speed of the decorative yarn feeding roller, when the decorative yarn feeding roller is paused for a long time, the decorative yarn is not output, resulting in a longer undecorated yarn segment; when the decorative yarn is briefly and rapidly fed in, the piled decorative yarn is quickly output, forming balls. This process is repeated to spin ball-shaped chenille yarn.

[0067] To ensure the spherical decorative yarns of the ball-shaped chenille yarn are firmly held and to facilitate a balance of twist stress, the spinning process of the ball-shaped chenille yarn involves spinning according to the first discontinuous arrangement density change Δλ' of the decorative yarns in the chenille yarn. Within a preset first time period, the core yarn output speed is controlled to be lower than a preset lower threshold, while the spindle speed during twisting and winding operations is higher than a preset upper threshold, thus achieving matching of the twist of the corresponding yarn segments in the ball-shaped chenille yarn. Within a preset second time period, the core yarn output speed is controlled to be higher than the preset upper threshold, while the spindle speed during twisting and winding operations is lower than a preset lower threshold, again achieving matching of the twist of the corresponding yarn segments in the ball-shaped chenille yarn. The preset second time period in the ball-shaped chenille yarn spinning process is shorter than the preset second time period in the brush chenille yarn spinning process. Ultimately, through the balance of twist stress, the core yarn firmly holds the spherical decorative yarns and prevents shedding.

[0068] Regarding brushed chenille yarn, by varying the timing of stopping the finishing yarn feeding and the timing of feeding the finishing yarn, the brushed finishing yarn is arranged discontinuously on the core yarn. This results in a section of brush-shaped finishing yarn with uniform density and consistent length appearing every other section of exposed core yarn. The core yarn is continuously output at a certain speed. By adjusting the speed of the finishing yarn feeding roller, when the finishing yarn roller stops feeding the finishing yarn for a long time, no finishing yarn is output, resulting in a longer section of unfinished yarn. When the finishing yarn feeding roller feeds the finishing yarn for a short time, a longer brush is formed. This process is repeated to obtain a brush-shaped chenille yarn with longer finishing yarn sections arranged at larger intervals.

[0069] To ensure the decorative yarns of the brush chenille yarn are firmly held and to facilitate a balance of twist stress, the spinning process of the brush chenille yarn is carried out according to the same first discontinuous arrangement density change Δλ' of the decorative yarns in the chenille yarn. Within a preset first time period, the core yarn output speed is controlled to be lower than a preset lower threshold, while the spindle speed during twisting and winding operations is higher than a preset upper threshold, thus achieving matching of the twist of the corresponding yarn segments in the ball-shaped chenille yarn. Within a preset second time period, the core yarn output speed is controlled to be higher than a preset upper threshold, while the spindle speed during twisting and winding operations is lower than a preset lower threshold, again achieving matching of the twist of the corresponding yarn segments in the ball-shaped chenille yarn. The preset second time period in the ball-shaped chenille yarn spinning process is shorter than the preset second time period in the brush chenille yarn spinning process. Ultimately, through the balance of twist stress, the core yarn firmly holds the brush-shaped decorative yarns and prevents shedding.

[0070] Regarding slub chenille yarn, slub chenille yarn is produced by using a faster spindle speed and a faster decorative yarn feed roller speed to create the thicker sections, and a slower spindle speed and a slower decorative yarn feed roller speed to create the thinner sections. The length of the thicker and thinner sections is controlled by adjusting the switching cycle between these two feeding states. The core yarn is continuously output at a certain speed. By coordinating the speed of the decorative yarn feed roller and the spindle speed, when the decorative yarn is fed at a slower speed, the spindle speed is relatively reduced, creating the thinner sections, and the length of the thinner sections is adjusted by controlling the feeding time. Conversely, when the decorative yarn is fed at a faster speed, the spindle speed is relatively increased, creating the slubs, and the length of the slubs is adjusted by controlling the feeding time. This process is repeated to produce slub chenille yarn.

[0071] To ensure the decorative yarns of the variable linear density chenille yarn are firmly held and to facilitate the balance of twist stress, the spinning process of slub chenille yarn is carried out according to the second discontinuous arrangement density change Δλ” of the decorative yarns in the chenille yarn. Furthermore, within a preset third time period, the core yarn output speed is controlled to be lower than the preset lower threshold, while the spindle speed during twisting and winding operations is higher than the preset upper threshold. Within a preset fourth time period, the core yarn output speed is controlled to be higher than the preset upper threshold, while the spindle speed during twisting and winding operations is lower than the preset lower threshold. This achieves matching of the twist of the corresponding yarn segments in the slub chenille yarn. Ultimately, through the balance of twist stress, the core yarn firmly holds the decorative yarns and prevents shedding.

[0072] In practical applications, the aforementioned online control method for the morphology and structure of chenille yarn specifically enables the acquisition of special chenille yarns, including spherical chenille yarn, brush chenille yarn, and slub chenille yarn. Specifically, for the spinning process of spherical chenille yarn, by varying the matching of the stop-feeding and feeding times of the decorative yarn, the radius and spacing of the chenille decorative yarn spheres are controlled. Spinning is performed according to the first discontinuous arrangement density change Δλ' of the decorative yarn in the chenille yarn. The resulting spherical chenille yarn exhibits varying arrangement densities λ of the decorative yarn in different yarn segments. i Length ζ i The corresponding information is as follows:

[0073]

[0074] Where i represents the sequence number of each different yarn segment in the ball-shaped chenille yarn, 2 represents the two types of yarn segments in the ball-shaped chenille yarn: the undecorated yarn segment and the ball-shaped decorative yarn segment. The ball-shaped decorative yarn segment corresponds to the length change segment of the decorative yarn perpendicular to the core yarn direction under the control of the rotary head, as well as the combination segments of sparse and dense with short and long lengths under the ball-shaped decorative yarn segment.

[0075] If, during the spinning process of brushed chenille yarn, the length and spacing of the chenille yarn trim segments are adjusted by varying the matching of the stop-feeding and feed-feeding yarn durations, and spinning is performed according to the first discontinuous arrangement density change Δλ' of the trim yarn in the chenille yarn, where the preset first duration is equal to the preset second duration (i.e., the length of the yarn segment corresponding to the preset first duration is equal to the length of the yarn segment corresponding to the preset second duration), then the arrangement density λ of the trim yarn in different yarn segments of the obtained spherical chenille yarn will be... j The corresponding information is as follows:

[0076]

[0077] Where j represents the sequence number of each different yarn segment in the brushed chenille yarn, and 2 represents the two types of yarn segments in the brushed chenille yarn: the undecorated yarn segment and the brush-shaped decorative yarn segment.

[0078] If, during the spinning process of slub chenille yarn, the height, length, and arrangement density of the chenille slub are controlled by varying the feed speed of the decorative yarn, and spinning is performed according to the second discontinuous arrangement density change Δλ of the decorative yarn in the chenille yarn, and the preset third time length is greater than the preset fourth time length, and the length of the decorative yarn perpendicular to the core yarn under the preset fourth time length is greater than the length of the decorative yarn perpendicular to the core yarn under the preset third time length, then the arrangement density λ of the decorative yarn in different yarn segments of the obtained slub chenille yarn will be... k Length ζ k The corresponding information is as follows:

[0079]

[0080] Where k represents the sequence number of each different yarn segment in the slub chenille yarn, and 2 represents the two yarn segments in the slub chenille yarn that correspond to the preset third and preset fourth durations, respectively.

[0081] Implementing the above design will yield various specialty chenille yarns, including spherical chenille yarn, brushed chenille yarn, and slub chenille yarn. When spinning spherical chenille yarn, the radius and spacing of the chenille yarn spheres can be controlled by varying the timing of the stop-feed and feed-feeding of the yarn. If chenille yarn is spun using a mode where the yarn roller stops feeding the yarn for a long time and feeds it in intermittently, a spherical or bubble-like chenille yarn with relatively large sphere radii and larger intervals will be obtained. If chenille yarn is spun using a mode where the yarn roller stops feeding the yarn irregularly for short periods and feeds it in intermittently, a bead-like chenille yarn with varying sphere radii and random intervals will be obtained. Figure 4 As shown, in the spherical chenille yarn structure, the spherical decorative yarns are arranged discontinuously on the core yarn. Each section of the exposed core yarn and each spherical decorative yarn stacked by the decorative yarns are arranged alternately to form a chenille yarn with discontinuous changes in linear density.

[0082] When spinning brush-like chenille yarn, the length and spacing of the chenille finishing yarn segments can be controlled by varying the matching of the finishing yarn pause time and the finishing yarn feed time. If chenille yarn is spun using a pattern of long finishing yarn pause and short finishing yarn feed times on the finishing yarn roller, a brush-like chenille yarn with longer chenille finishing yarn segments and larger intervals will be obtained. Figure 5 As shown, in the brushed chenille yarn structure, the brushed decorative yarns are arranged discontinuously on the core yarn. Each section of the exposed core yarn and each section of the brushed decorative yarn are arranged alternately to form a brushed chenille yarn with a discontinuous change in linear density. The brushed decorative yarns are composed of decorative yarns of the same length arranged at a uniform density.

[0083] When spinning slub chenille yarn, the height, length, and arrangement density of the slub segments can be controlled by varying the feed speed of the decorative yarn. If chenille yarn is spun using a pattern of feeding the decorative yarn at a low speed for a long time and then feeding it at a high speed for a short time, a slub-shaped chenille yarn with longer slub segments and larger intervals of decorative yarn will be obtained; for example... Figure 7 As shown, in the slub chenille yarn structure, slub decorative yarns are continuously arranged on the core yarn. Based on the base yarn formed by the core yarn and decorative yarns, slub yarn segments are distributed sequentially along the base yarn according to a preset distribution interval rule, forming a slub chenille yarn with continuously varying linear density. The arrangement density of the slub yarn segments is greater than that of the base yarn, and the length of the decorative yarn in the slub yarn segment is greater than that of the base yarn.

[0084] Under the above design and application, such as Figure 1 As shown, chenille yarn with temporal changes in morphological structure is obtained based on, as Figure 2 The diagram shows the structure of a traditional chenille yarn. Further analysis follows, as shown below. Figure 3 The variation in the yarn arrangement density of the chenille yarn shown is achieved by adjusting the rotation speed of the rotary head; the yarn arrangement density is directly proportional to the rotation speed of the rotary head. Figure 6 The twist and yarn arrangement density of the chenille yarn shown are both varied, which is achieved by adjusting the output speed of the core yarn. The yarn arrangement density and twist are inversely proportional to the output speed of the core yarn.

[0085] The above design is applied to practice, and the following three embodiments are analyzed.

[0086] Example 1: Spinning of pom-pom chenille yarn. Two 21S polyester core yarns and 150D / 288F polyester decorative yarns are selected to spin chenille yarn. The chenille spinning machine has a spindle speed of 6800 r / min, a spindle speed of 6000 r / min, a spacer width of 3 mm, a core yarn output speed of 8 m / min, a spacer width of 2 mm, and one decorative yarn is input simultaneously. The chenille yarn twist is 750 twists / m.

[0087] Design of the temporal variation law of structural parameters:

[0088] Time / ms <![CDATA[Decorative yarn output speed / (m·min -1 )]]> 180 0 20 8.2

[0089] Structural parameters of the spun special chenille yarn:

[0090] Time / ms Segment length / cm Decorative yarn arrangement density / (threads / 10cm) Length of decorative veil (mm) Linear density (tex) 180 2.4 0 0 64.67 20 0.26 872 4.6 848.06

[0091] Example 2: Spinning of brushed chenille yarn. Two 21S polyester core yarns and 150D / 288F polyester finishing yarns were selected to spin chenille yarn. The chenille spinning machine had a spindle speed of 6800 r / min, a spindle speed of 6000 r / min, a core yarn output speed of 8 m / min, a spacer width of 2 mm, and simultaneously input one finishing yarn with a twist of 750 twists / m.

[0092] Design of the temporal variation law of structural parameters:

[0093]

[0094]

[0095] Structural parameters of the spun special chenille yarn:

[0096] Time / ms Segment length / cm Decorative yarn arrangement density / (threads / 10cm) Length of decorative veil (mm) Linear density (tex) 180 2.4 0 0 64.67 180 2.4 340 2.8 250.6

[0097] Example 3: Spinning of slub chenille yarn. Two 21S polyester core yarns and 150D / 288F polyester finishing yarns were selected to spin chenille yarn. The chenille spinning machine had a spindle speed of 16200 r / min, a spindle speed of 6300 r / min, a spacer width of 2 mm, a core yarn output speed of 9 m / min, and two finishing yarns were simultaneously input with a twist of 700 twists / m.

[0098] Design of the temporal variation law of structural parameters:

[0099] Time / ms Yarn output speed (m / min) 800 5.5 200 23

[0100] Structural parameters of the spun special chenille yarn:

[0101] Time / ms Segment length / cm Decorative yarn arrangement density / (threads / 10cm) Length of decorative veil (mm) Linear density (tex) 800 12 220 0 194.98 200 3 920 4.2 819.31

[0102] The online control method for the morphology and structure of chenille yarn designed in the above technical solution achieves online control over the change in the arrangement density of chenille yarn by adjusting the output of the decorative yarn, the output of the core yarn, and the spindle rotation speed. Furthermore, based on the change in the linear density of the chenille yarn, the twist of the chenille yarn is also controlled online. Different output states, such as the output of the decorative yarn and the pause, are used to control the yarn to form ball-shaped chenille yarn, brush-shaped chenille yarn, and slub chenille yarn. A corresponding spinning system is designed, introducing core yarn output rollers and decorative yarn feeding rollers for independent control. Combined with a twisting and winding system, a spinning twist stress balance is designed to synergistically control various morphological and structural parameters of the chenille yarn. This results in a wider range of morphological and structural parameter control and a richer variety of morphological structures in the spun chenille yarn. Moreover, the special chenille yarn obtained from this spinning is less prone to shedding.

[0103] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present invention.

Claims

1. A method for online control of the morphological structure of chenille yarn, characterized in that: The decorative yarn is wound onto the spacer plate by a rotating head. The friction between the rotating feed roller and the surface of the spacer plate pushes the wound decorative yarn onto the spacer plate, causing it to be cut by a blade. The cut decorative yarn then intersects with the core yarn at a perpendicular angle for twisting and winding, thus obtaining chenille yarn. The online control method during the spinning process includes the following steps: Step A. Based on the fact that when only the rotary head speed is changed, the density of the decorative yarn in the obtained chenille yarn is directly proportional to the change in rotary head speed; when only the core yarn output speed is changed, the density of the decorative yarn in the obtained chenille yarn is inversely proportional to the change in core yarn output speed; and when only the decorative yarn output speed is changed, the density of the decorative yarn in the obtained chenille yarn is directly proportional to the change in decorative yarn output speed, then construct the change in the density of the decorative yarn in the obtained chenille yarn. as follows: (1) in, This indicates the density of the decorative yarn arrangement in the obtained chenille yarn. Indicates the rotational speed of the rotary head. This indicates the change in the rotational speed of the rotary head. Indicates the output speed of the decorative yarn. This indicates the change in the output speed of the decorative yarn. Indicates the core yarn output speed. This indicates the change in core yarn output speed. This indicates the number of decorative yarns simultaneously input into the obtained chenille yarn; Step B. Based on the change in the density of the decorative yarns in the chenille yarn. For alternating execution of the first preset duration of interior yarn stopping output, and the second preset duration of interior yarn stopping output... Beginning The positive increment is used to change the output, constructing the first discontinuous arrangement density change of the decorative yarn in the obtained chenille yarn. as follows: (2) Meanwhile, based on the change in the density of the decorative yarn arrangement in chenille yarn For alternating execution of a preset third duration of interior yarn with a speed lower than the preset lower limit threshold of yarn output speed. Output, and preset the fourth duration interior yarn. Beginning The positive increment is used to change the output, constructing the change in the second discontinuous arrangement density of the decorative yarn in the obtained chenille yarn. as follows: (3) Step C. Based on the change in density of the first discontinuous arrangement of the decorative yarns in the chenille yarn. The change in density of the second discontinuous arrangement of the decorative yarn Based on the distribution pattern of the preset first time during the spinning process, the distribution pattern of spherical chenille yarn is controlled; the rotation speed of the rotary head is controlled to control the number of spherical yarns containing decorative yarns in the obtained chenille yarn; and the preset first time is controlled to control the length of the undecorative yarn segment in the obtained chenille yarn.

2. The method for online control of the morphological structure of chenille yarn according to claim 1, characterized in that: Step C further includes adjusting the distance between the spacer plate and the rotating head and blade to control the length of the decorative yarn and the diameter of the obtained chenille yarn. Specifically, when the width of the spacer plate changes, the length of the decorative yarn in the obtained chenille yarn is directly proportional to the change in the width of the spacer plate. Therefore, the change in the length of the decorative yarn in the obtained chenille yarn is constructed. as follows: (4) in, For the length of the decorative yarn, The width of the spacer plate. This refers to the thickness of the spacer plate.

3. The method for online control of the morphological structure of chenille yarn according to claim 1, characterized in that: Step C further includes adjusting the twist of different yarn segments during the spinning process of different types of chenille yarn to achieve twist stress balance. Specifically, for the spinning process of ball-shaped chenille yarn or brush-shaped chenille yarn, the adjustment is based on the change in the density of the first discontinuous arrangement of the decorative yarn in the chenille yarn. Spinning is performed, and within a preset first time period, the core yarn output speed is adjusted to be lower than a preset lower threshold value, and the spindle speed during twisting and winding operations is adjusted to be higher than a preset upper threshold value, so as to achieve the matching of the twist of the corresponding yarn segments in the ball chenille yarn; and within a preset second time period, the core yarn output speed is adjusted to be higher than a preset upper threshold value, and the spindle speed during twisting and winding operations is adjusted to be lower than a preset lower threshold value, so as to achieve the matching of the twist of the corresponding yarn segments in the ball chenille yarn; wherein, the preset second time period in the ball chenille yarn spinning process is shorter than the preset second time period in the brush chenille yarn spinning process; If we consider the spinning process of slub chenille yarn, and calculate the change in density of the second discontinuous arrangement of the decorative yarn in the chenille yarn... Spinning is performed, and within a preset third time period, the core yarn output speed is adjusted to be lower than the preset lower threshold of core yarn output speed, and the spindle speed during twisting and winding operations is higher than the preset upper threshold of spindle speed; and within a preset fourth time period, the core yarn output speed is adjusted to be higher than the preset upper threshold of core yarn output speed, and the spindle speed during twisting and winding operations is lower than the preset lower threshold of spindle speed, so as to achieve the matching of the twist of the corresponding yarn segment in the ball chenille yarn.

4. The method for online control of the morphological structure of chenille yarn according to claim 3, characterized in that: For the spinning process of chenille yarn with tufts, by varying the matching of the stop-feeding and feed-feeding times of the decorative yarn, the radius and spacing of the chenille decorative yarn tufts can be controlled, according to the change in the density of the first discontinuous arrangement of the decorative yarn in the chenille yarn. The spinning process is used to determine the density of the decorative yarn in different segments of the resulting spherical chenille yarn. ,length The corresponding information is as follows: ； in, This indicates the sequence number of each different yarn segment in the ball-shaped chenille yarn. 2 represents the two types of yarn segments in the ball-shaped chenille yarn: the undecorated yarn segment and the ball-shaped decorative yarn segment. The ball-shaped decorative yarn segment corresponds to the length change segment of the decorative yarn perpendicular to the core yarn direction under the control of the rotary head, as well as the combination segments of sparse and dense with short and long lengths under the ball-shaped decorative yarn segment. For the spinning process of brushed chenille yarn, by varying the matching of the stop feeding time and the feed feeding time, the length and spacing of the chenille yarn trim can be controlled, according to the change in the density of the first discontinuous arrangement of the trim in the chenille yarn. Spinning is performed, where a preset first time is equal to a preset second time, meaning the length of the yarn segment corresponding to the preset first time is equal to the length of the yarn segment corresponding to the preset second time. Then, the arrangement density of the decorative yarn in different yarn segments of the resulting spherical chenille yarn is determined. The corresponding information is as follows: ； in, This indicates the sequence number of each different yarn segment in brushed chenille yarn. 2 represents the two types of yarn segments in brushed chenille yarn: undecorated yarn segment and brush-shaped decorative yarn segment. If, during the spinning process of slub chenille yarn, the height, length, and arrangement density of the slub in the chenille decorative yarn are controlled by varying the feed speed of the decorative yarn, then the change in the second discontinuous arrangement density of the decorative yarn in the chenille yarn can be considered. Spinning is performed, with a preset third time length greater than a preset fourth time length, and the length of the decorative yarn perpendicular to the core yarn at the preset fourth time length greater than the length of the decorative yarn perpendicular to the core yarn at the preset third time length. The resulting slub chenille yarn will have different decorative yarn arrangement densities in different yarn segments. ,length The corresponding information is as follows: ； in, This indicates the sequence number of each different yarn segment in the slub chenille yarn. 2 represents two yarn segments in the slub chenille yarn that correspond to the preset third and preset fourth durations, respectively.

5. A special chenille yarn using the online control method for the morphology and structure of chenille yarn according to any one of claims 1 to 4, characterized in that: Including spherical chenille yarn, brush chenille yarn, and slub chenille yarn obtained by spinning. In the spherical chenille yarn structure, the spherical decorative yarns are arranged discontinuously on the core yarn. Each section of the exposed core yarn and each spherical decorative yarn piled up by the decorative yarns are arranged alternately to form chenille yarn with discontinuous changes in linear density. In the brushed chenille yarn structure, the brushed decorative yarns are arranged discontinuously on the core yarn. Each section of the exposed core yarn and each section of the brushed decorative yarn are arranged alternately to form a brushed chenille yarn with a discontinuous change in linear density. The brushed decorative yarns are composed of decorative yarns of the same length arranged at a uniform density. In the slub chenille yarn structure, slub decorative yarns are continuously arranged on the core yarn. Based on the base yarn formed by the core yarn and decorative yarns, slub yarn segments are distributed at intervals along the base yarn according to a preset distribution interval rule, forming slub chenille yarn with continuously varying linear density. The arrangement density of the slub yarn segments is greater than that of the base yarn, and the length of the decorative yarn in the slub yarn segment is greater than the length of the base yarn.

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