CN109763221B

CN109763221B - Five-channel hollow spindle fancy yarn forming device and method

Info

Publication number: CN109763221B
Application number: CN201910207559.4A
Authority: CN
Inventors: 刘曰兴; 薛元; 张国清; 乔传亮; 莫振恩; 刘立霞; 刘成禄
Original assignee: Jiangnan University; Yuyue Home Textile Co Ltd
Current assignee: Jiangnan University; Yuyue Home Textile Co Ltd
Priority date: 2019-03-13
Filing date: 2019-03-19
Publication date: 2023-09-29
Anticipated expiration: 2039-03-19
Also published as: CN109763221A

Abstract

The invention provides a five-channel hollow spindle fancy yarn forming device and a method, wherein the yarn forming device comprises a first channel, a second channel, a third channel, a fourth channel and a fifth channel; the first component yarn, the second component yarn, the third component yarn, the fourth component yarn and the fifth component yarn form a fancy yarn main body after being alternately twisted by first twisting points; a hollow spindle is arranged at the second twisting point, and the sixth component yarn on the hollow spindle is intersected with the fancy yarn main body and coats the fancy yarn main body. The invention realizes one-step spinning of fancy yarn by alternating drafting, alternating twisting and cladding processes through a one-step method, and simultaneously realizes on-line changes of colors and forms of bamboo joints, large belly, knots, circles and braids of the fancy yarn by technical means of regulating and controlling the speed of the cooperative feeding twisting points of the fancy yarn and the core yarn, regulating and controlling the linear density and blending ratio of the fancy yarn, regulating and controlling the twist of the core yarn, regulating and controlling the switching of the core yarn and the fancy yarn, and the like, thereby expanding new varieties of fancy yarn.

Description

Five-channel hollow spindle fancy yarn forming device and method

Technical Field

The invention relates to the technical field of spinning in textile engineering, in particular to a five-channel hollow spindle fancy yarn forming device and method.

Background

The hollow spindle spinning machine is used for producing fancy yarn by a two-step method, wherein the first step is that core yarn, decorative yarn and solid yarn are spun respectively; and twisting the core yarn and the decorative yarn fed at different speeds by using a hollow spindle device, twisting the decorative yarn on the core yarn by overfeeding the decorative yarn to form knots, loops, braids and other patterns on the core yarn, and fixing the formed patterns by using the fixed yarn unwound from the hollow spindle to form the hollow spindle fancy yarn. The main problems of producing fancy yarn by a hollow spindle spinning machine are as follows:

1) The change of the color of the fancy yarn cannot be regulated and controlled when the fancy yarn is spun by the hollow spindle: in order to realize the color change of fancy yarns, one is to regulate and control the mutual wrapping relation among the decorative yarns, the core yarns and the fixed yarns, and the other is to regulate and control the color of the decorative yarns. The traditional hollow spindle spinning machine for producing fancy yarn does not have a means for regulating and controlling the mutual wrapping relation among the decorative yarn, the core yarn and the fixed yarn, and the color of the decorative yarn cannot be regulated and controlled, so that the color change of the fancy yarn cannot be regulated and controlled;

2) The size and color of knots, loops and braids cannot be regulated and controlled when the hollow spindle spins fancy yarns: the hollow spindle fancy yarn comprises three components (core yarn, decorative yarn and solid yarn), wherein the decorative yarn is a main body for forming fancy yarn knots, rings and braids, and the traditional hollow spindle spinning machine cannot regulate the thickness and color change of the decorative yarn on line, so that the size and color change of knots, rings and braids cannot be regulated;

3) When the hollow spindle spins the three-thread fancy yarn comprising (core yarn + fancy yarn + solid yarn), only one fancy yarn and one core yarn can be simply combined, and multiple combination modes of a plurality of fancy yarns and a plurality of core yarns can not be realized, so that the on-line regulation and control of the combination modes of the fancy yarn and the core yarn can not be realized.

4) The change of the coating ratio of the core yarn, the decorative yarn and the solid yarn cannot be regulated and controlled when the hollow spindle spins the fancy yarn: when a three-thread fancy yarn including (core yarn+decorative yarn+solid yarn) is spun by a hollow spindle, a regulating means is absent in the process of twisting the core yarn and the decorative yarn and then coating the yarn with the solid yarn, so that the change of the coating ratio of the core yarn, the decorative yarn and the solid yarn cannot be regulated on line.

5) Low efficiency, high production cost, etc.

Because the hollow spindle spinning machine has the problems, in the spinning process of fancy yarns, the wrapping structure, the shape, the color, the style and the hand feeling of the fancy yarns are difficult to change on line through the regulation and control of spinning equipment and spinning technology, and the requirements of the fancy yarn clothing fabric with various shapes, rich and fine colors and flexible front guard style cannot be met.

Disclosure of Invention

The invention aims to provide a five-channel hollow spindle fancy yarn forming device and a method thereof, which combine decorative yarns, core yarns and fixed yarns into a complex fancy yarn comprising combined flowers such as knots, loops, braids and the like through alternating drafting, cooperative conveying, alternate twisting, cladding and other processes so as to solve at least one technical problem in the prior art.

In order to solve the technical problems, the invention provides a five-channel hollow spindle fancy yarn forming device, which comprises a first channel for passing a first component yarn, a second channel for passing a second component yarn, a third channel for passing a third component yarn, a fourth channel for passing a fourth component yarn and a fifth channel for passing a fifth component yarn;

the first channel is sequentially provided with a first back roller, a first middle roller, a first front roller, a first twisting point and a second twisting point;

the second channel is sequentially provided with a second back roller, a second middle roller, a second front roller, the first twisting point and the second twisting point;

a third rear roller, a third middle roller, the second front roller, the first twisting point and the second twisting point are sequentially arranged on the third channel;

a fourth rear roller, a fourth middle roller, the first front roller, the first twisting point and the second twisting point are sequentially arranged on the fourth channel;

a third front roller, the first twisting point and the second twisting point are sequentially arranged on the fifth channel;

the areas among the rear roller, the middle roller and the front roller on the first channel, the second channel, the third channel and the fourth channel are drafting areas, the first front roller, the second front roller, the third front roller and the first twisting point form an interactive twisting triangular area, and the first front roller, the second front roller and the third front roller respectively and independently move to respectively introduce corresponding component yarns into the interactive twisting triangular area;

One or a plurality of yarns in the first component yarn, the second component yarn, the third component yarn, the fourth component yarn and/or the fifth component yarn form a fancy yarn main body after being alternately twisted by first twisting points;

the second twisting point is provided with a hollow spindle, the fancy yarn main body passes through the hollow spindle, the hollow spindle rotates rapidly, and the sixth component yarn on the hollow spindle is intersected with the fancy yarn main body and coats the fancy yarn main body.

Further, the yarn winding device also comprises a yarn bobbin, wherein the yarn bobbin is sleeved on the hollow spindle and synchronously rotates along with the hollow spindle, and the sixth component yarn is wound on the yarn bobbin.

Further, the hollow spindle includes a twister for twisting the fancy yarn body.

The invention breaks through the technical bottleneck of hollow spindle spinning in the aspect of fancy yarn forming, realizes the one-step spinning of fancy yarns (comprising core yarns, ornamental yarns and solid yarns) by carrying out alternating drafting, cooperative output, alternating twisting and cladding processes through a one-step method, and simultaneously realizes the online change of the colors and the forms of fancy yarn bamboo joints, large belly, knots, circles and braids by regulating and controlling the output speed of the ornamental yarns and the core yarns, the linear density and blending ratio of the ornamental yarns, the twist of the core yarns, the switching of the core yarns and the ornamental yarns and other technical means, and expands new varieties of fancy yarns.

Wherein preferably, the first component yarn, the second component yarn, the third component yarn and the fourth component yarn are decorative yarns, the fifth component yarn is a core yarn, and the sixth component yarn is a solid yarn.

Of course, the roles of the first component yarn, the second component yarn, the third component yarn, the fourth component yarn and the fifth component yarn, and even the roles of the sixth component yarn are opposite, namely, any 1 to 4 yarns of the first component yarn, the second component yarn, the third component yarn, the fourth component yarn and the fifth component yarn can be decorative yarns, and other yarns can be core yarns, and can be freely adjusted according to the combination modes of the yarns when the yarn is applied.

Further, the first back roller and the first middle roller are connected through a first transmission gear set, and the first transmission gear set is used for keeping the traction ratio (linear velocity ratio) between the first middle roller and the first back roller constant and not more than 1.4;

the second rear roller and the second middle roller are connected through a second transmission gear set, and the second transmission gear set is used for keeping the traction ratio (linear velocity ratio) between the second middle roller and the second rear roller constant and not more than 1.4;

the third rear roller and the third middle roller are connected through a third transmission gear set, and the third transmission gear set is used for keeping the traction ratio (linear velocity ratio) between the third middle roller and the third rear roller constant and not more than 1.4;

The fourth back roller and the fourth middle roller are connected through a fourth transmission gear set, and the fourth transmission gear set is used for keeping the traction ratio (linear velocity ratio) between the fourth middle roller and the fourth back roller constant and not more than 1.4.

First to fourth aspects of the inventionIn the channel, a primary drafting unit (namely a first drafting zone or a rear zone) is formed between the middle roller and the rear roller, and the front roller and the middle roller form a secondary drafting unit (namely a second drafting zone or a front zone); the speed ratio of the middle roller and the rear roller of the same channel is constant and less than 1.4, and the speed ratio is synchronously changed relative to the front roller in the channel, and the speed ratio of the middle roller and the rear roller of different channels is alternately changed relative to the front roller, so that the alternating drafting of four groups of roves is realized. Of particular importance, the first draft is pre-draft, the first draft ratio e _h The constant C is the constant draft, the draft ratio e of the first-order draft _h The number of times C is less than or equal to 1.4, the continuity of the roving can be ensured, and the drafting singular point can not be generated in the first drafting zone. Meanwhile, the fiber in the roving can be straightened, tensioned and oriented in the pre-drafting process, so that the preparation of sliding in the main drafting process is finished, the breakage rate or the singular point rate in the main drafting process is reduced, the drafting and twisting process is more stable, and the labor intensity of workers is greatly reduced.

And an upper leather roller is correspondingly arranged above each rear roller, each middle roller and each front roller, and the upper leather roller is matched with the rollers below to clamp yarns.

Preferably, an upper leather roller is correspondingly arranged above the middle roller on the same channel in the first channel, the second channel, the third channel and the fourth channel, and the yarn forming device further comprises an upper leather ring sleeved on the upper pin and the middle roller and keeping synchronous movement with the middle roller, and a lower leather ring sleeved on the lower pin and the middle roller and keeping synchronous movement with the middle roller; the distance between the holding jaws of the upper leather collar and the lower leather collar and the jaw line of the front roller is less than 3mm.

Two-stage drafting e _q For dynamic main drafting, the speed of the middle roller is changed relative to the front roller, when the blending ratio K=0% of one component yarn in the first channel, the second channel, the third channel or the fourth channel, the secondary drafting ratio e of the channel yarn _q When in = -infinity, the channel yarn forms a drafting singular point in the second drafting zone, the distance delta between the drafting singular point and the front roller jaw is less than or equal to 3mm (the gauge of the rear roller and the middle roller in the prior art is generally more than 25mm, and the position of the drafting singular point in the first drafting zone is random When the drafting singular point is more than 3mm away from the middle roller jaw, the time for the drafting singular point to be fed into the middle roller jaw again is uncertain, if the matching is poor, coarse and fine materials are generated or spinning broken ends are caused, so that spinning becomes an unstable process, and the reliability and the yarn forming quality of spinning are affected. When K is increased gradually, along with synchronous starting of the rear roller and the middle roller, the whisker held by the upper leather collar and the lower leather collar is instantaneously fed into a jaw of the front roller to carry out secondary drafting, so that the drafting singular point in the secondary drafting zone does not influence the stability of spinning.

Further, the fifth channel further comprises a drawing roller, and the drawing roller, the third front roller, the first twisting point and the second twisting point are sequentially arranged.

Further, the device also comprises a rear roller shaft and a middle roller shaft;

in the circumferential direction of the rear roller shaft, the first rear roller is sleeved on the rear roller shaft in a relatively fixed manner (for example, by a key manner), and the second rear roller, the third rear roller and the fourth rear roller are sleeved on the rear roller shaft in a relatively rotatable manner (for example, by a bearing manner);

in the circumferential direction of the middle roller shaft, the first middle roller, the third middle roller and the fourth middle roller are sleeved on the middle roller shaft in a relatively rotatable manner, and the second middle roller is sleeved on the middle roller shaft in a relatively fixed manner.

Thus, the feeding speeds of the first component yarn and the second component yarn can be respectively regulated and controlled through the rear roller shaft and the middle roller shaft.

Further, the front roller shaft is also included; in the circumferential direction of the front roller shaft, the first front roller and the second front roller are sleeved on the front roller shaft in a relatively rotatable manner, and the third front roller is sleeved on the front roller shaft in a relatively fixed manner.

Further, the first transmission gear set comprises a first driving gear, a first carrier gear and a first driven gear which are sequentially meshed for transmission; the first driving gear is fixedly connected with the first rear roller in a coaxial manner, and the first driven gear is fixedly connected with the first middle roller in a coaxial manner;

the second transmission gear set comprises a second driving gear, a second carrier gear and a second driven gear which are sequentially meshed for transmission; the second driving gear is fixedly connected with the second middle roller in a coaxial manner, and the second driven gear is fixedly connected with the second rear roller in a coaxial manner;

the third transmission gear set comprises a third driving gear, a third bridging gear and a third driven gear which are sequentially meshed for transmission; the third driving gear is fixedly connected with the third middle roller in a coaxial manner, and the third driven gear is fixedly connected with the third rear roller in a coaxial manner;

The fourth transmission gear set comprises a fourth driving gear, a fourth bridging gear and a fourth driven gear which are sequentially meshed for transmission; the fourth driving gear is fixedly connected with the fourth middle roller in a coaxial mode, and the fourth driven gear is fixedly connected with the fourth rear roller in a coaxial mode.

Further, a first auxiliary shaft is also included;

in the circumferential direction, the third carrier gear is sleeved on the first auxiliary shaft relatively fixedly; the first carrier gear, the second carrier gear and the fourth carrier gear are rotatably sleeved on the first auxiliary shaft.

Further, the device also comprises a second auxiliary shaft which is arranged in parallel with the first auxiliary shaft, and a transmission gear which is in meshed transmission with the fourth bridge gear is fixedly sleeved on the second auxiliary shaft.

Thus, the feeding speeds of the first component yarn, the second component yarn, the third component yarn and the fourth component yarn can be respectively controlled through the rear roller shaft, the middle roller shaft, the first auxiliary shaft and the second auxiliary shaft.

Preferably, the rear roller, the middle roller and the front roller are nested rollers. Of course, the driving modes of the rear roller and the middle roller on different channels are not limited to the above modes, for example, a leather collar for belt transmission is arranged on the rear roller or the middle roller on each channel, and the leather collar is connected with a servo motor through a belt transmission mechanism; or the rear roller or the middle roller on each channel is respectively and independently provided with a transmission gear structure, and is connected with a servo motor through a speed reducing mechanism. For another example, the first auxiliary shaft and the second auxiliary shaft can be arranged coaxially, the third bridging gear and the fourth bridging gear are respectively and fixedly sleeved on the first auxiliary shaft and the second auxiliary shaft, and the feeding speeds of the third component yarn and the fourth component yarn can be respectively controlled through the first auxiliary shaft and the second auxiliary shaft.

Further, the device also comprises a first front shaft and a second front shaft, wherein the first front shaft is connected with the first front roller through a first gear transmission pair, the second front shaft is connected with the second front roller through a second gear transmission pair, and the rotating speeds of the first front roller and the second front roller can be respectively regulated and controlled through the first front shaft and the second front shaft.

Further, the first gear pair includes: the first main gear and the first auxiliary gear are meshed with each other for transmission, the first main gear is fixedly sleeved on the first front shaft, and the first auxiliary gear is coaxially and fixedly connected with the first front roller;

the second gear pair includes: the second main gear and the second auxiliary gear are meshed with each other for transmission, the second main gear is fixedly sleeved on the second front shaft, and the second auxiliary gear is fixedly connected with the second front roller in a coaxial mode.

Further, the device also comprises a control system and a servo driving system;

the servo driving system comprises a servo driver and a servo motor;

the control system comprises a controller (preferably a PLC programmable controller) and a rotating speed sensor;

the controller is connected with the servo motor through a servo driver in sequence;

the servo motor includes: the hollow spindle comprises a first servo motor for driving the rear roller shaft to rotate, a second servo motor for driving the middle roller shaft to rotate, a third servo motor for driving the first auxiliary shaft to rotate, a fourth servo motor for driving the second auxiliary shaft to rotate, a fifth servo motor for driving the first front shaft, a sixth servo motor for driving the second front shaft, a seventh servo motor for driving the front roller shaft to rotate and a spindle motor for driving the hollow spindle to rotate;

The rotational speed sensor includes: the spindle sensor is used for monitoring the rotating speeds of the rear roller shaft, the middle roller shaft, the first auxiliary shaft, the second auxiliary shaft, the first front shaft, the second front shaft and the front roller shaft respectively, and is used for monitoring the rotating speeds of the hollow spindle.

The controller in the invention sequentially controls the feeding speed of six component yarns through the servo driver and the servo motor, the rotating speed sensor monitors the actual feeding speed of the six component yarns in real time, the monitoring value is fed back to the controller, and the controller can adjust the magnitude of the six yarn control signals according to the monitoring value.

Further, the twisting mechanism comprises a ring plate; the controller controls the movement of the ring plate through a servo driver and a servo motor.

In addition, the control system includes a series of instructions and a modular program.

Further, the control system further comprises a first comparison module, the first comparison module is respectively connected with the first sensor, the second sensor, the third sensor, the fourth sensor and the controller, the first comparison module is used for monitoring the rotation speed ratio between the middle roller shaft, the rear roller shaft, the first auxiliary shaft and the second auxiliary shaft, and the controller regulates and controls the rotation speed of the middle roller shaft, the rear roller shaft, the first auxiliary shaft and/or the second auxiliary shaft according to the numerical value fed back by the first comparison module, so as to regulate and control the blending ratio of the first component yarn, the second component yarn, the third component yarn and the fourth component yarn.

The comparison module may be a prior art, may be an existing comparator or integrated comparison circuit, or may be a comparison module in the form of software in the controller CUP. The sensor is also in many forms, for example, a photoelectric encoder or a hall rotation speed sensor, etc.

Further, the outer diameter sizes of the first front roller, the second front roller and the third front roller are the same.

By adopting the technical scheme, the invention has the following beneficial effects:

according to the five-channel hollow spindle fancy yarn forming device provided by the invention, a hollow spindle spinning system with five spinning channels and two twisting points is constructed, four untwisted yarns and one staple yarn (or filament) are respectively output from three front rollers which are coaxial and have different rotating speeds at a first twisting point, the four untwisted yarns and one staple yarn (or filament) are alternately twisted in a twisting triangular area to form a fancy yarn main body, and the output staple yarn (or filament) and the formed fancy yarn main body are subjected to cladding twisting at a second twisting point to form fancy yarns comprising decorative yarns, core yarns and fixed yarns, so that the spinning of the hollow spindle fancy yarns by a one-step method of decorative yarns, core yarns and fixed yarns is realized;

in addition, through regulating and controlling the cooperative change of the speeds of the rear roller, the middle roller, the auxiliary shaft and the three front rollers, the fancy yarn with multiple structures such as single-twist coating, cross-twist coating, twist coating and the like is spun; the yarn is spun into a combined fancy yarn with changeable appearance and shape by regulating and controlling the speeds of the rear roller, the middle roller, the auxiliary shaft and the three front rollers to cooperatively change, on-line changing the combination of the decorative yarn and the core yarn, on-line changing the combination of the patterns such as knots, braids, loops and the like, on-line changing the sizes of the patterns such as knots, braids, loops and the like, on-line changing the colors of the patterns such as knots, braids, loops and the like; finally, the coating ratio of the core wire, the decorative wire and the solid wire is regulated and controlled by regulating and controlling the speeds of the rear roller, the middle roller, the auxiliary shaft and the three front rollers in a cooperative mode, the color fancy yarn with online color change is spun, and the production efficiency is greatly improved.

In addition, the invention also discloses a fancy yarn forming method adopting the five-channel hollow spindle fancy yarn forming device.

Further, the first component yarn and the fourth component yarn are output by a first front roller after being alternately drafted through a first channel and a fourth channel; the second component yarn and the third component yarn are output by a second front roller after being alternately drafted by a second channel and a third channel; the fifth component yarn is output by a third front roller through a fifth channel;

in a twisting triangular area of the first twisting point, one or more of the first component yarn, the second component yarn, the third component yarn, the fourth component yarn and the fifth component yarn are alternately twisted under the twisting force of the hollow spindle to form a fancy yarn main body; and the sixth component yarn output from the hollow spindle at the second twisting point is subjected to cladding twisting with the formed fancy yarn main body to form fancy yarn, so that the hollow spindle fancy yarn is spun by the trim, the core yarn and the solid yarn one-step method.

Further, through regulating and controlling the speeds of the rear roller, the middle roller and the three front rollers on the first channel, the second channel, the third channel and/or the fourth channel, the single-twist cladding structure fancy yarn, the cross-twist cladding structure fancy yarn and the winding cladding structure fancy yarn can be spun respectively by the cooperative input decorative yarn and the core yarn;

A single-twist cladding structured fancy yarn formed by twisting an untwisted yarn strip or yarn through the first channel, the second channel, the third channel, the fourth channel or the fifth channel at the first twisting point and cladding the yarn with a sixth component at the second twisting point;

two untwisted strands or yarns are respectively led into the alternating twisting triangular area through two channels of the first channel, the second channel, the third channel, the fourth channel or the fifth channel, and are wrapped by a sixth component yarn at a second twisting point after being twisted at the same speed at the first twisting point;

at least three yarns of the first component yarn, the second component yarn, the third component yarn, the fourth component yarn and the fifth component yarn are led into the alternating twisting triangular area, and after non-constant-speed twisting is carried out at the first twisting point, the twisting cladding structure fancy yarn is formed by cladding the sixth component yarn at the second twisting point.

Further, a twisting phenomenon is generated at a first twisting point by a plurality of groups of yarns or strands which are output by the front roller at different speeds, and the groups of yarns or strands which are twisted with each other are obviously separated into decorative yarns and core yarns along with the increase of the speed difference, and the decorative yarns are twisted on the core yarns to form fancy yarn pattern shapes; the on-line change of the combination mode of the decorative yarn and the core yarn, the on-line change of the pattern combination mode, the on-line change of the pattern size, the on-line change of the pattern color and the color can be realized by on-line regulating and controlling the speeds of the rear roller, the middle roller and the three front rollers, and the combined fancy yarn with changeable appearance can be spun.

Wherein the flower shape comprises knots, braids, circles and the like.

Further, the first component yarn and the fourth component yarn are introduced into an alternate twisting triangle area by a first front roller after being alternately drafted by a first channel and a fourth channel; the second component yarn and the third component yarn are introduced into an alternate twisting triangle area by a second front roller after being alternately drafted by a second channel and a third channel; the fifth component yarn is led into the interactive twisting triangle area through a fifth channel by a third front roller; the component yarn with the lowest front roller speed is core yarn of fancy yarn, the component yarn with higher front roller speed is decorative yarn of fancy yarn, and the on-line change of the combination mode of the decorative yarn and the core yarn in the fancy yarn is realized by on-line adjusting the feeding speeds of the three front rollers.

Further, the speeds of the first front roller, the second front roller and the third front roller are respectively V _q1 、V _q2 And V _q3 Through on-line regulation and control of V _q1 、V _q2 And/or V _q3 Under the condition that the rotation speed of the back roller and the rotation speed of the middle roller on the first channel, the second channel, the third channel and the fourth channel are kept unequal and are not zero (namely V _h (t)≠V _z (t) noteq0), regulating V by the controller _q1 (t)∶V _q2 (t)∶V _q3 The ratio of (t) can realize the online change of various pattern combinations on the fancy yarn;

(1) when V is _q1 (t)∶V _q2 (t)∶V _q3 When (t) = (1.15-1.3): 1, the first component yarn, the second component yarn, the third component yarn and the fourth component yarn (decorative yarn Y) ₁ +Y ₂ +Y ₃ +Y ₄ ) Inter-twist and kink in the fifth component yarn (core yarn X ₁ ) Forming a knot on the upper part;

(2) when V is _q1 (t)∶V _q2 (t)∶V _q3 When (t) = (1.3-4) to 1, the first component yarn, the second component yarn, the third component yarn and the fourth component yarn (decorative yarn Y) ₁ +Y ₂ +Y ₃ +Y ₄ ) Inter-twist and kink in the fifth component yarn (core yarn X ₁ ) Forming a ring on the upper part;

(3) when V is _q1 (t)∶V _q2 (t)∶V _q3 When (t) =1:1:1 (1.15-1.3), the fifth component yarn (core yarn X ₁ ) The first, second, third and fourth component yarns (core yarn Y) ₁ +Y ₂ +Y ₃ +Y ₄ ) Forming a knot on the upper part;

(4) when V is _q1 (t)∶V _q2 (t)∶V _q3 When (t) =1:1:1:1.3-4, the fifth component yarn (core yarn X ₁ ) The first, second, third and fourth component yarns (core yarn Y) ₁ +Y ₂ +Y ₃ +Y ₄ ) Forming a braid or a loop.

Further, the middle roller speed V in the first channel, the second channel, the third channel and/or the fourth channel is regulated and controlled on line _z (t) and velocity V of the rear roller _h (t) further changing the linear density of the first component yarn, the second component yarn, the third component yarn and/or the fourth component yarn and/or by regulating the speed V of the third front roller on line _q3 (t) thereby enabling an on-line variation of the size of the pattern on the fancy yarn.

The on-line variation of the pattern size on fancy yarns specifically includes:

(1) on-line regulation and control of fancy yarn knot size

When V is _q1 (t)∶V _q2 (t)∶V _q3 When (t) = (1.15-1.3): 1, the first component yarn, the second component yarn, the third component yarn and the fourth component yarn are decorative yarns (decorative yarns [ (Y) ₁ +Y ₄ )+( _Y 2+Y ₃ )]) The fifth component yarn is a core yarn (core yarn X ₁ ) The method comprises the steps of carrying out a first treatment on the surface of the The decorative yarn is alternately twisted and kinked on the core yarn to form knots; the yarn density of the yarn at this time is:

the change of the density of the decorative yarns can be regulated and controlled by regulating the speed of the middle roller and the speed of the rear roller in the first channel, the second channel, the third channel and/or the fourth channel on line, and the density of the decorative yarns is increased when the feeding speed of the middle roller and the rear roller is increased; when the feeding speed of the middle roller and the rear roller is reduced, the linear density of the decorative yarn is reduced;

(2) on-line regulation and control of fancy yarn loop size

When V is _q1 (t)∶V _q2 (t)∶V _q3 When the ratio of (t) = (1.3-4) to 1, the first component yarn, the second component yarn, the third component yarn and the fourth component yarn are decorative yarns, and the fifth component yarn is core yarn; the decorative yarn is alternately twisted and kinked on the core yarn to form a loop; yarn with linear density for forming loop

meanwhile, the overfeeding quantity of the decorative yarn relative to the core yarn speed is regulated and controlled, namely the speed V of the first front roller is regulated and controlled _q1 (t) and second front roller speed V _q2 (t) relative to the third front roller velocity V _q3 The overfeeding amount of (t) is large, and the overfeeding is small, so that the size of the formed fancy yarn loop is regulated and controlled on line;

(3) on-line regulation and control of fancy yarn braid length

When V is _q1 (t)∶V _q2 (t)∶V _q3 When (t) =1:1:1:1.3-4, the first component yarn, the second component yarn, the third component yarn and the fourth component yarn areCore yarn (core yarn [ (Y) ₁ +Y ₄ )+(Y ₂ +Y ₃ )]) The fifth component yarn is a decorative yarn (decorative yarn X ₁ ) The method comprises the steps of carrying out a first treatment on the surface of the The decorative yarn is alternately twisted on the core yarn to form a loop, and when the decorative yarn is the strong twisting yarn, the loop formed under the action of the self twisting stress of the decorative yarn is immediately twisted into a braid;

yarn speed V is regulated and controlled by PLC _q3 (t) an ultra-small amount of relative core yarn speed, wherein the strand is long when the overfeeding amount is large, and the strand is short when the overfeeding amount is small, so that the length of the formed fancy yarn strand is regulated and controlled to change on line.

Further, the component yarns forming the decorative yarn are colored yarns, the change of the blending ratio of the decorative yarn can be regulated and controlled by regulating and controlling the speeds of the middle roller shaft and the rear roller of the drafting zone, and when the decorative yarn forms a pattern, the online change of the spinning pattern color is realized by regulating and controlling the change of the blending ratio of the decorative yarn.

Further, the wrapping structure and the wrapping ratio of each component of the fancy yarn can be regulated and controlled by regulating and controlling the speeds of the rear roller, the middle roller and the three front rollers on the first channel, the second channel, the third channel and/or the fourth channel, so that the online color change of the fancy yarn can be regulated and controlled online.

The following explains the structural parameters of the forming fancy yarn of the alternating draft twisting coating hollow spindle spinning system.

The linear density, the core yarn density and the solid yarn density of the four rovings serving as the decoration yarns are respectively ρ ₁ 、ρ ₂ 、ρ ₃ 、ρ ₄ 、ρ _x 、ρ _g After alternating drafting, alternating twisting and yarn fixing coating, the linear density of the fancy yarn is ρ _hy The speeds of the three front rollers, the rear roller, the middle roller and the two auxiliary shafts in the spinning process and the core wire sending-out speed are respectively V _q1 (t)、V _q2 (t)、V _q3 (t)、V _h (t)、V _z (t)、V _f1 (t)、V _f2 (t)、V _R1 (t), c=1.25 is the speed ratio of the back roller in the channel. After alternating drafting, alternating twisting and coating of the yarn fixing of the yarn core yarn, the formed fancy yarn has the following structural parameters:

1. Yarn density and blending ratio of decorative yarn

2. Linear density of core yarn:

3. linear density of the solid yarn:

ρ _g (t)＝ρ _g (7)

4. yarn density and coating ratio of fancy yarn

Drawings

In order to more clearly illustrate the embodiments of the invention or the technical solutions in the prior art, the drawings which are required in the description of the embodiments or the prior art will be briefly described, it being obvious that the drawings in the description below are some embodiments of the invention and that other drawings may be obtained from these drawings without inventive effort for a person skilled in the art.

Fig. 1 is a schematic structural view of a hollow spindle fancy yarn forming device provided in embodiment 1 of the present invention;

fig. 2 is a schematic view of first to six channels of the hollow spindle fancy yarn forming apparatus in example 1;

FIG. 3 is a transmission structure diagram of the hollow spindle fancy yarn forming device provided in embodiment 1;

fig. 4 is a transmission structural diagram between the first auxiliary shaft and the second auxiliary shaft in embodiment 1;

FIG. 5 is a schematic circuit diagram of a hollow spindle fancy yarn forming apparatus in example 1 of the present invention;

fig. 6 is a circuit diagram showing a comparison module in the hollow spindle fancy yarn forming apparatus in example 3 of the present invention.

Reference numerals:

Y ₁ -a first component yarn; y is Y ₂ -a second component yarn; y is Y ₃ -a third component yarn; y is Y ₄ -a fourth component yarn; x is X ₁ -a fifth component yarn; g ₁ -a sixth component yarn; r is R ₁ -a take-out roller; r is R ₂ -a hollow spindle; d (D) ₁ -a first twisting point; d (D) ₂ -a second twisting point; 41-a first rear roller; 42-a second rear roller; 43-a third rear roller; 44-a fourth rear roller; 51-a first idler gear; 52-a second intermediate gear; 53-a third intermediate gear; 54-fourth intermediate gear; 61-a first middle roller; 62-a second middle roller; 63-a third middle roller; 64-a fourth middle roller; 71-a first front roller; 72-a second front roller; 73-a third front roller; 4-a rear roller shaft; 5-a first auxiliary shaft; 9-a second auxiliary shaft; 6-middle roller shaft; 7-a front roller shaft; 8-a first front axle; 11-a second front axle; 411-first drive gear; 421-a second passive gear; 431-third driven gear; 441-fourth driven gears; 611-a first driven gear; 621-a second drive gear; 631-a third drive gear; 641-fourth drive gear; 81-a first main gear; 711-first pinion; 112-a second main gear; 721-a second pinion; p (P) ₄ -a rear upper leather roller; p (P) ₆ -a mid-epithelial roller; p (P) ₇ -a front epithelial roller; q (Q) ₁ -an upper apron; q (Q) ₂ -a lower apron.

Detailed Description

The following description of the embodiments of the present invention will be made apparent and fully in view of the accompanying drawings, in which some, but not all embodiments of the invention are shown. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

Example 1

As shown in FIGS. 1-4, the five-channel hollow spindle fancy yarn forming device provided in this embodiment comprises a first component yarn Y ₁ First passage A therethrough ₁ B ₁ C ₁ D ₁ D ₂ E. For the second component yarn Y ₂ A second passage A therethrough ₂ B ₂ C ₂ D ₁ D ₂ E. For the third component yarn Y ₃ A third passage A therethrough ₃ B ₃ C ₃ D ₁ D ₂ E. For the fourth component yarn Y ₄ Fourth passage A therethrough ₄ B ₄ C ₄ D ₁ D ₂ E. For the fifth component yarn X ₁ A fifth passage R therethrough ₁ C ₃ D ₁ D ₂ E。

The first channel is provided with a first back roller 41, a first middle roller 61, a first front roller 71 and a first twisting point D in sequence ₁ And a second twisting point D ₂ The method comprises the steps of carrying out a first treatment on the surface of the The second channel is provided with a second back roller 42, a second middle roller 62, a second front roller 72 and a first twisting point D in sequence ₁ And a second twisting point D ₂ The method comprises the steps of carrying out a first treatment on the surface of the The third channel is provided with a third back roller 43, a third middle roller 63, a second front roller 72 and a first twisting point D in sequence ₁ And a second twisting point D ₂ The method comprises the steps of carrying out a first treatment on the surface of the The fourth channel is provided with a fourth back roller 44, a fourth middle roller 64, a first front roller 71 and a first twisting point D in sequence ₁ And a second twisting point D ₂ The method comprises the steps of carrying out a first treatment on the surface of the The fifth channel is provided with a third front roller 73 and a first twisting point D in sequence ₁ And a second twisting point D ₂ 。

The areas among the rear roller, the middle roller and the front roller on the channel are drafting areas, the first front roller 71, the second front roller 72, the third front roller 73 and the first twisting point D1 form an alternate twisting triangle area, the first front roller 71, the second front roller 72 and the third front roller 73 respectively and independently move, and the corresponding component yarns are respectively introduced into the alternate twisting triangle area; one or a plurality of yarns of the first component yarn, the second component yarn, the third component yarn, the fourth component yarn and/or the fifth component yarn pass through the first twisting point D ₁ Forming the fancy yarn body after the alternate twisting.

D at the second twisting point ₂ Is provided with a hollow spindle R ₂ Fancy yarn main body passes through hollow spindle R ₂ Hollow spindle R ₂ Quick rotation hollow spindle R ₂ The sixth component yarn G ₁ Intersecting with the fancy yarn main body and coating the fancy yarn main body.

The present embodiment also includes filamentsA bobbin (not shown) and a twisting device (not shown), the filament bobbin is sleeved on the hollow spindle R ₂ Upper and following with hollow spindle R ₂ Synchronous rotation, sixth component yarn G ₁ Wound on a filament bobbin. The twister is used for twisting the fancy yarn main body.

The invention breaks through the technical bottleneck of hollow spindle spinning in the aspect of fancy yarn forming, realizes the one-step spinning of fancy yarn by carrying out alternating drafting, cooperative output, alternating twisting and cladding processes through a one-step method, and simultaneously realizes the online change of the colors and the forms of the slubs, the large belly, the knots, the rings and the braids of the fancy yarn by regulating and controlling the output speed of the fancy yarn and the core yarn, regulating and controlling the linear density and the blending ratio of the fancy yarn, regulating and controlling the twist of the core yarn, regulating and controlling the switching of the core yarn and the fancy yarn and other technical means, and expands the new variety of the fancy yarn.

Wherein the first back roller 41 and the first middle roller 61 are connected through a first transmission gear set, and the first transmission gear set is used for keeping the traction ratio between the first middle roller 61 and the first back roller 41 constant and not more than 1.4; the second rear roller 42 and the second middle roller 62 are connected through a second transmission gear set, and the second transmission gear set is used for keeping the traction ratio between the second middle roller 62 and the second rear roller 42 constant and not more than 1.4; the third rear roller 43 and the third middle roller 63 are connected through a third transmission gear set, and the third transmission gear set is used for keeping the traction ratio between the third middle roller 63 and the third rear roller 43 constant and not more than 1.4; the fourth rear roller 44 and the fourth middle roller 64 are connected by a fourth driving gear set for keeping the traction ratio between the fourth middle roller 64 and the fourth rear roller 44 constant and not more than 1.4.

In the first to four channels, a first-stage drafting unit is formed between a middle roller and a rear roller, and a second-stage drafting unit is formed by a front roller and the middle roller; the speed ratio of the middle roller and the rear roller of the same channel is constant and less than 1.4, and the speed ratio is synchronously changed relative to the front roller in the channel, and the speed ratio of the middle roller and the rear roller of different channels is alternately changed relative to the front roller, so that the alternating drafting of four groups of roves is realized. Of particular importance, the first draft is pre-draft, the first draft ratio e _h Constant C is constant tractionDraft ratio e of stretching and first-level drafting _h The number of times C is less than or equal to 1.4, the continuity of the roving can be ensured, and the drafting singular point can not be generated in the first drafting zone. Meanwhile, the fiber in the roving can be straightened, tensioned and oriented in the pre-drafting process, so that the preparation of sliding in the main drafting process is finished, the breakage rate or the singular point rate in the main drafting process is reduced, the drafting and twisting process is more stable, and the labor intensity of workers is greatly reduced.

Wherein, a rear upper leather roller P is correspondingly arranged above each rear roller, middle roller and front roller ₄ Middle epithelial roller P ₆ And front epithelial roller P ₇ The upper roller is matched with the lower roller for clamping the yarn.

Preferably, an upper leather roller is correspondingly arranged above the middle roller on the same channel in the first channel, the second channel and the third channel, and the yarn forming device also comprises an upper leather ring Q sleeved on the middle leather roller and the upper pin and keeping synchronous motion with the middle roller ₁ Lower apron Q sleeved on middle roller and lower pin and keeping synchronous motion with middle roller ₂ The method comprises the steps of carrying out a first treatment on the surface of the The distance between the holding jaws of the upper leather collar and the lower leather collar and the jaw line of the front roller is less than 3mm.

The fifth channel also comprises a drawing roller R ₁ Draw-out roller R in the direction in which the yarn is drawn ₁ Third front roller 73, first twisting point D ₁ And a second twisting point D ₂ Is sequentially arranged.

The embodiment also comprises a rear roller shaft 4, a middle roller shaft 6 and a front roller shaft 7; the first back roller 41 is fixed to the back roller shaft 4 by means of a key, and the second back roller 42, the third back roller 43 and the fourth back roller 44 are rotatably fixed to the back roller shaft 4 by means of a bearing. In the circumferential direction of the middle roller shaft 6, the first middle roller 61, the third middle roller 63 and the fourth middle roller 64 are rotatably sleeved on the middle roller shaft 6, and the second middle roller 62 is fixedly sleeved on the middle roller shaft 6. Thus, the feeding speeds of the first component yarn and the second component yarn can be controlled by the rear roller shaft 4 and the middle roller shaft 6, respectively.

The first front roller 71 and the second front roller 72 are rotatably fitted around the front roller shaft 7 in the circumferential direction of the front roller shaft 7, and the third front roller 73 is fixedly fitted around the front roller shaft 7.

The first transmission gear set comprises a first driving gear 411, a first carrier gear 51 and a first driven gear 611 which are sequentially meshed for transmission; the first driving gear is fixedly connected with the first rear roller 41 coaxially and the first driven gear is fixedly connected with the first middle roller 61 coaxially;

the second transmission gear set comprises a second driving gear 621, a second carrier gear 52 and a second driven gear 421 which are sequentially meshed for transmission; the second driving gear is fixedly connected with the second middle roller 62 in a coaxial manner, and the second driven gear is fixedly connected with the second rear roller 42 in a coaxial manner; the third transmission gear set comprises a third driving gear 631, a third carrier gear 53 and a third driven gear 431 which are sequentially meshed for transmission; the third driving gear is fixedly connected with the third middle roller 63 in a coaxial manner, and the third driven gear is fixedly connected with the third rear roller 43 in a coaxial manner; the fourth transmission gear set comprises a fourth driving gear 641, a fourth carrier gear 54 and a fourth driven gear 441 which are sequentially meshed for transmission; the fourth driving gear is fixedly connected with the center of the fourth middle roller 64, and the fourth driven gear is fixedly connected with the center of the fourth rear roller 44.

The present embodiment further includes a first auxiliary shaft 5 and a second auxiliary shaft 9 disposed parallel to the first auxiliary shaft 5; the third carrier gear 53 is fixedly mounted on the first auxiliary shaft 5 in a circumferential direction; the first, second and fourth intermediate gears 51, 52 and 54 are rotatably journaled on the first auxiliary shaft 5. The second auxiliary shaft 9 is fixedly sleeved with a transmission gear 94 which is meshed with the fourth carrier gear 54 for transmission.

Thereby, the feeding speeds of the first component yarn, the second component yarn, the third component yarn and the fourth component yarn can be controlled by the rear roller shaft 4, the middle roller shaft 6, the first auxiliary shaft 5 and the second auxiliary shaft 9, respectively.

Preferably, the rear roller, the middle roller and the front roller are nested rollers. Of course, the driving modes of the rear roller and the middle roller on different channels are not limited to the above modes, for example, a leather collar for belt transmission is arranged on the rear roller or the middle roller on each channel, and the leather collar is connected with a servo motor through a belt transmission mechanism; or the rear roller or the middle roller on each channel is respectively and independently provided with a transmission gear structure, and is connected with a servo motor through a speed reducing mechanism. For another example, the first auxiliary shaft 5 and the second auxiliary shaft 9 may be further arranged coaxially, the third carrier gear 53 and the fourth carrier gear 54 are respectively fixedly sleeved on the first auxiliary shaft 5 and the second auxiliary shaft 9, and the feeding speed of the third component yarn and the feeding speed of the fourth component yarn may be respectively controlled through the first auxiliary shaft 5 and the second auxiliary shaft 9.

In addition, the device further comprises a first front shaft 8 and a second front shaft 11, wherein the first front shaft 8 is connected with the first front roller 71 through a first gear transmission pair, the second front shaft 11 is connected with the second front roller 72 through a second gear transmission pair, and the rotation speeds of the first front roller 71 and the second front roller 72 can be respectively regulated and controlled through the first front shaft 8 and the second front shaft 11.

The first gear transmission pair includes: the first main gear 81 and the first auxiliary gear 711 which are mutually meshed and driven, the first main gear 81 is fixedly sleeved on the first front shaft 8, and the first auxiliary gear 711 is fixedly connected with the first front roller 71 in a coaxial way; the second gear transmission pair includes: the second main gear 112 and the second auxiliary gear 721 are meshed with each other, the second main gear 112 is fixedly sleeved on the second front shaft 11, and the second auxiliary gear 721 is fixedly connected with the second front roller 72 in a coaxial manner.

As shown in fig. 5, the present embodiment further includes a control system and a servo drive system; the servo driving system comprises a servo driver and a servo motor; the control system comprises a controller (preferably a PLC programmable controller) and a rotating speed sensor; the controller is connected with the servo motor through the servo driver in turn.

The servo motor includes: a first servo motor for driving the rear roller shaft 4 to rotate, a second servo motor for driving the middle roller shaft 6 to rotate, a third servo motor for driving the first auxiliary shaft 5 to rotate, a fourth servo motor for driving the second auxiliary shaft 9 to rotate, a fifth servo motor for driving the first front shaft 8, a sixth servo motor for driving the second front shaft 11, and a seventh servo motor for driving the front roller shaft 7 to rotate, so as to For driving hollow spindles R ₂ A rotating spindle motor.

The rotation speed sensor includes: a first sensor, a second sensor, a third sensor, a fourth sensor, a fifth sensor, a sixth sensor and a seventh sensor for monitoring the rotational speeds of the rear roller shaft 4, the middle roller shaft 6, the first auxiliary shaft 5, the second auxiliary shaft 9, the first front shaft 8, the second front shaft 11 and the front roller shaft 7, respectively, and a spindle sensor for monitoring the rotational speed of the hollow spindle R2.

The controller in the invention sequentially controls the feeding speeds of six component yarns through the servo driver and the servo motor, the rotating speed sensor monitors the actual feeding speeds of the six component yarns in real time, the monitoring value is fed back to the controller, and the controller can adjust the magnitude of the control signal according to the monitoring value.

The twisting mechanism comprises a twisting device on the hollow spindle; the controller controls the movement of the twisting device through the servo driver and the servo motor, and the control system comprises a twisting device sensor for monitoring the twisting device. In addition, the control system includes a series of instructions and a modular program.

According to the five-channel hollow spindle fancy yarn forming device provided by the invention, a hollow spindle spinning system with five spinning channels and two twisting points is constructed, four non-twisted yarns and one staple yarn (or filament) are respectively output from three front rollers which are coaxial and have different rotating speeds at a first twisting point D1, the four non-twisted yarns and one staple yarn (or filament) are alternately twisted in a twisting triangular region to form a fancy yarn main body, and the staple yarn (or filament) output from a hollow spindle at a second twisting point D2 is subjected to cladding twisting with the formed fancy yarn main body to form fancy yarns comprising decorative yarns, core yarns and fixed yarns, so that the spinning of the hollow spindle fancy yarns by a one-step method of decorative yarns, core yarns and fixed yarns is realized;

Example 2

In addition, the embodiment also discloses a fancy yarn forming method adopting the five-channel hollow spindle fancy yarn forming device.

1. Spinning of hollow spindle fancy yarn formed by twisting decorative thread, core thread and fixed thread in one step

The hollow spindle spinning device in this embodiment has five spinning channels and two twisting points. Wherein the first component yarn and the fourth component yarn (roving Y ₁ Roving Y ₄ ) The first channel and the fourth channel are used for outputting by a first front roller after alternating drafting; second component yarn and third component yarn (roving Y ₂ Roving Y ₃ ) The alternating drafting is carried out through a second channel and a third channel, and then the alternating drafting is output through a second front roller; fifth component yarn (or filament) X ₁ ) Outputting by a third front roller through a fifth channel;

in a twisting triangle area of a first twisting point, three front rollers which are coaxial with each other and have different outer diameters and different rotating speeds respectively output four paths of untwisted yarns and one path of spun yarns (or filaments), and the four paths of untwisted yarns and the one path of spun yarns are alternately twisted under the action of twisting force to form a fancy yarn main body; the sixth component yarn (spun yarn (or filament) fed from the hollow spindle at the second twisting point is taken up as a yarn G ₁ ) And the yarn is wrapped and twisted with the formed fancy yarn main body to form fancy yarn, so that the hollow spindle fancy yarn is spun by the trim, core yarn and solid yarn one-step method.

2. Spinning of fancy yarn with online changing wrapping structure

The speed of the rear roller, the middle roller and the speed of the three front rollers on the first channel, the second channel, the third channel and/or the fourth channel are regulated and controlled, so that single-twist cladding structure fancy yarns, cross-twist cladding structure fancy yarns and twining cladding structure fancy yarns can be spun respectively by synergized input of decorative yarns and core yarns;

A single-twist coated structured fancy yarn formed by twisting an untwisted yarn strand or yarn through the first channel, the second channel, the third channel, the fourth channel or the fifth channel at the first twisting point and coating the untwisted yarn strand or yarn at the second twisting point by a sixth component yarn (solid yarn);

two untwisted strands or yarns are respectively led into the cross-twisting triangular area through two channels of the first channel, the second channel, the third channel, the fourth channel or the fifth channel, and after being twisted at the same speed at the first twisting point, the two untwisted strands or yarns are wrapped by a sixth component yarn (solid yarn) at a second twisting point to form the cross-twisting wrapping structure fancy yarn;

at least three yarns of the first component yarn, the second component yarn, the third component yarn, the fourth component yarn and the fifth component yarn are introduced into the alternating twisting triangle zone, and after non-constant-speed twisting is performed at the first twisting point, are twisted at the second twisting point by the sixth component yarn (solid yarn G ₁ ) And coating the formed twisting coating structure fancy yarn.

(1) Spinning of fancy yarn with single twist cladding structure:

the single twist cladding structure of the effect yarn is a structure of the effect yarn formed by twisting an untwisted yarn strand (or yarn) at a first twisting point and cladding the yarn at a second twisting point.

In the device of the invention, the output strand is single-twisted at a first twisting point and is output by a sixth channel at a second twisting point ₁ Cladding forms a single twist clad fancy yarn structure. Can be formed in this way (Y ₁ +G ₁ )、(Y ₂ +G ₁ )、(Y ₃ +G ₁ )、(Y ₄ +G ₁ )、(X ₁ +G ₁ )、[(Y ₁ +Y ₄ )+G ₁ ]、[(Y ₃ +Y ₂ )+G ₁ ]Seven kinds of fancy yarn with single-twist cladding structure.

(2) Spinning fancy yarn with cross-twisting cladding structure:

the twisting cladding structure of the effect yarn is a structure of the effect yarn formed by twisting two non-twisted strands (or yarns) at a constant speed at a first twisting point and cladding the two non-twisted strands with a solid yarn at a second twisting point.

In the device of the invention, two strands are output from two front rollers and are twisted at the same speed at a first twisting point, and a fixed thread G is output from a sixth channel at a second twisting point ₁ Cladding to form a fancy yarn structure with the cross-twisted cladding. In this way [ Y ] can be formed ₁ +X ₁ +G ₁ ]、[Y ₂ +X ₁ +G ₁ ]、[(Y ₁ +Y ₄ )+X ₁ +G ₁ ]、[Y ₃ +X ₁ +G ₁ ]、[Y ₄ +X ₁ +G ₁ ]、[(Y ₃ +Y ₂ )+X ₁ +G ₁ ]、[(Y ₁ +Y ₄ )+(Y ₃ +Y ₂ )+G ₁ ]And seven types of fancy yarns with cross-twisting cladding structures.

(3) Spinning fancy yarn with twisting cladding structure:

the twist coating structure of the effect yarn is a structure of effect yarn in which three or more non-twisted strands (or yarns) are non-uniformly twisted at a first twisting point and are coated with a solid yarn at a second twisting point. In the device of the invention, three or more non-twisted strands (or yarns) are non-uniformly output from three front rollers, non-uniformly twisted at a first twisting point, and a fixed thread G is output from a sixth channel at a second twisting point ₁ The wrapping forms a twisting wrapped fancy yarn structure. In this way [ Y ] can be formed ₁ +X ₁ +(Y ₃ +Y ₂ )+G ₁ ]、[Y ₂ +X ₁ +(Y ₁ +Y ₄ )+G ₁ ]、[(Y ₁ +Y ₄ )+X ₁ +Y ₃ +G ₁ ]、[(Y ₁ +Y ₄ )+X ₁ +Y ₂ +G ₁ ]、[(Y ₁ +Y ₄ )+X ₁ +(Y ₃ +Y ₂ )+G ₁ ]Seven kinds of twisting coating structure fancy yarn.

3. Spinning of fancy yarn with on-line changing morphology

The yarn or the whisker strips which are mutually twisted are obviously separated into decorative yarn and core yarn along with the increase of the speed difference, and the decorative yarn is twisted on the core yarn to form various fancy yarn forms such as knots, braids, loops and the like; the on-line change of the combination mode of the decorative yarn and the core yarn, the on-line change of the pattern combination mode, the on-line change of the pattern size, the on-line change of the pattern color and the color can be realized by on-line regulating and controlling the speeds of the rear roller, the middle roller and the three front rollers, and the combined fancy yarn with changeable appearance can be spun. Wherein the flower shape comprises knots, braids, circles and the like.

(1) Fancy yarn spinning with online changing decorative yarn and core yarn combined mode

First component yarn and fourth component yarn (roving Y ₁ Roving Y ₄ ) Introducing an alternating twisting triangle zone by a first front roller after alternating drafting through a first channel and a fourth channel; second component yarn and third component yarn (roving Y ₂ Roving Y ₃ ) Introducing the alternating twisting triangle by a second front roller after alternating drafting through a second channel and a third channel; fifth component yarn (or filament) X ₁ ) Introducing an interactive twisting triangle area from a third front roller through a fifth channel; the component yarn (strand) with the lowest front roller speed is core yarn of fancy yarn, the component yarn with higher front roller speed is decorative yarn of fancy yarn, and the on-line change of the combination mode of decorative yarn and core yarn in the fancy yarn is realized by on-line adjusting the feeding speeds of the three front rollers.

For example, roving Y ₁ 、Y ₄ After alternating drafting through the first channel and the fourth channel, the first front roller is driven at a speed V _q1 (t) output, yarn X ₁ At a speed V by a third front roller through a fifth channel _q3 (t) output, roving Y ₂ 、Y ₃ After alternating drafting through the second channel and the third channel, the second front roller is driven at a speed V _q2 (t) output. The yarn with the lowest front roller speed will generally become the core yarn of the fancy yarn, and the yarn with relatively higher speed will become the core yarn of the fancy yarn.

When V is _q1 At minimum (t), roving (Y) ₁ +Y ₄ ) Is a core yarn, yarn X ₁ And roving (Y) ₂ +Y ₃ ) Is a decorative yarn; when V is _q2 (t) minimum timeRoving (Y) ₂ +Y ₃ ) Is a core yarn, yarn X ₁ And roving (Y) ₁ +Y ₄ ) Is a decorative yarn; when V is _q3 (t) at minimum, X ₁ Is a core yarn, roving (Y ₂ +Y ₃ ) And roving (Y) ₁ +Y ₄ ) Is a decorative yarn; thus, V is regulated by PLC _q1 (t)、V _q2 (t)、V _q3 (t) on-line variation of the combination pattern of the decorative yarn and the core yarn can be realized.

(2) Spinning of fancy yarn with combined online variation of patterns such as knots, braids, loops and the like

The speeds of the first front roller, the second front roller and the third front roller are respectively V _q1 、V _q2 And V _q3 Through on-line regulation and control of V _q1 、V _q2 And/or V _q3 Under the condition that the rotation speed of the back roller and the rotation speed of the middle roller on the first channel, the second channel, the third channel and the fourth channel are kept unequal and are not zero (namely V _h (t)≠V _z (t) noteq0), regulating V by the controller _q1 (t)∶V _q2 (t)∶V _q3 The ratio of (t) can realize the online change of various pattern combinations on the fancy yarn. The flower shape includes, but is not limited to, knots, braids, loops, etc.

(3) when V is _q1 (t)∶V _q2 (t)∶V _q3 When (t) =1:1:1 (1.15-1.3), the fifth component yarn (core yarn X ₁ ) Alternately twisting and kinking the yarn in the first component yarn, the second component yarn,Third component yarn and fourth component yarn (core yarn Y ₁ +Y ₂ +Y ₃ +Y ₄ ) Forming a knot on the upper part;

(3) Spinning of fancy yarn with yarn-like size changing in-line like knots, braids, loops, etc

The size of the flower-shaped yarn knots, braids, loops and the like depends on the thickness and twist of the decorative yarn and the core yarn, and the overfeeding speed of the decorative yarn relative to the core yarn. When the knots are formed, the knots formed by twisting the fancy yarn with large coarse twist and the fancy yarn with small fine twist are larger; when the loop is formed, the loop formed by twisting the fancy yarn with large thick twist and large overfeeding ratio of the decorative yarn is larger than the fancy yarn with small thin twist and small feeding ratio of the decorative yarn; when the braid is formed, the braided braid formed by twisting the fancy yarn with large thick twist and large overfeeding ratio is longer than the fancy yarn with small thin twist and small feeding ratio.

By regulating and controlling the middle roller speed V in the first channel, the second channel, the third channel and/or the fourth channel on line _z (t) and velocity V of the rear roller _h (t) further changing the linear density of the first component yarn, the second component yarn, the third component yarn and/or the fourth component yarn and/or by regulating the speed V of the third front roller on line _q3 (t) thereby enabling an on-line variation of the size of the pattern on the fancy yarn.

The on-line variation of the pattern size on fancy yarns specifically includes:

(1) on-line regulation and control of fancy yarn knot size

When V is _q1 (t)∶V _q2 (t)∶V _q3 When (t) = (1.15-1.3): 1, the first component yarn, the second component yarn, the third component yarn and the fourth component yarn are decorative yarns (decorative yarns [ (Y) ₁ +Y ₂ )+(Y ₃ +Y ₄ ) The fifth component yarn is a core yarn (core yarn X) ₁ ) The method comprises the steps of carrying out a first treatment on the surface of the The decorative yarn is alternately twisted and kinked on the core yarn to form knots; the yarn density of the yarn at this time is:

by regulating the speed of the middle roller and the speed of the rear roller in the first channel, the second channel, the third channel and/or the fourth channel on line (particularly regulating the speeds V of the rear roller shaft, the middle roller shaft, the first auxiliary shaft and the second auxiliary shaft by PLC _h (t)、V _z (t)、V _f1 (t)、V _f2 (t) adjusting the change of the density of the decorative yarn, wherein the density of the decorative yarn is increased when the feeding speed of the middle roller and the rear roller is increased; when the feeding speed of the middle roller and the rear roller is reduced, the linear density of the decorative yarn is reduced;

(2) on-line regulation and control of fancy yarn loop size

When V is _q1 (t)∶V _q2 (t)∶V _q3 When (t) = (1.3-4) to 1, the first, second, third and fourth component yarns are decorative yarns (decorative yarns [ (Y) ₁ +Y ₂ )+(Y ₃ +Y ₄ ) The fifth component yarn is a core yarn (core yarn X) ₁ ) The method comprises the steps of carrying out a first treatment on the surface of the The decorative yarn is alternately twisted and kinked on the core yarn to form a loop; yarn with linear density for forming loop

meanwhile, the overfeeding quantity of the decorative yarn relative to the core yarn speed is regulated and controlled, namely the speed V of the first front roller is regulated and controlled _q1 (t) and second front roller speed V _q2 (t) relative to the third precursorPulling speed V _q3 And (d) overfeeding the yarn in the step (t), wherein the overfeeding is large, the overfeeding is small, and the overfeeding is large, so that the size of the formed fancy yarn loop is regulated and controlled on line.

(3) On-line regulation and control of fancy yarn braid length

When V is _q1 (t)∶V _q2 (t)∶V _q3 When (t) =1:1:1:1.3-4, the first, second, third and fourth component yarns are core yarns (core yarn [ (Y) ₁ +Y ₂ )+(Y ₃ +Y ₄ )]) The fifth component yarn is a decorative yarn (decorative yarn X ₁ ) The method comprises the steps of carrying out a first treatment on the surface of the The decorative yarn is alternately twisted on the core yarn to form a loop, and when the decorative yarn is the strong twisting yarn, the loop formed under the action of the self twisting stress of the decorative yarn is immediately twisted into a braid;

(4) Spinning of fancy yarn with on-line variation of flower-like color such as knots, braids, loops and the like

The component yarns forming the decorative yarn are colored yarns, and the speeds of the middle roller shaft and the rear roller of the drafting zone (specifically, the speeds V of the rear roller shaft, the middle roller shaft, the first auxiliary shaft and the second auxiliary shaft are regulated and controlled by a PLC _h (t)、V _z (t)、V _f1 (t)、V _f2 And (t)), the change of the blending ratio of the decorative yarn can be regulated, and when the decorative yarn forms a pattern, the online change of the color of the spun pattern (knots, braids, loops and the like) is realized by regulating the change of the blending ratio of the decorative yarn.

The flower-like yarn knots, braids, loops and the like can be varied depending on the color mixing ratio of the decorative yarn. If roving Y is used as decorative yarn ₁ 、Y ₂ 、Y ₃ 、Y ₄ The color roving can be selected from seven colors of roving such as red, orange, yellow, green, cyan, blue and purple, if the linear density is ρ ₁ 、ρ ₂ 、ρ ₃ 、ρ ₄ The blending ratio of the decorative yarn is K _h1 (t)、K _h2 (t)、K _h3 (t)、K _h4 (t) is as followsThe following steps:

therefore, the speed V of the middle roller shaft, the rear roller shaft, the first auxiliary shaft and the second auxiliary shaft is regulated and controlled by the PLC _h (t)、V _z (t)、V _f1 (t)、V _f2 And (t) adjusting the change of the blending ratio of the decorative yarn, and spinning fancy yarns with online change of flower colors such as knots, braids, loops and the like through the change of the blending ratio of the decorative yarn when the decorative yarn forms knots and loops.

4. Spinning of fancy yarn with color changing on line

The wrapping structure and the wrapping ratio of each component of the fancy yarn can be regulated and controlled by regulating and controlling the speeds of the rear roller, the middle roller and the three front rollers on the first channel, the second channel, the third channel and/or the fourth channel through a PLC, so that the online color change of the fancy yarn can be regulated and controlled online.

The fancy yarn is formed by mutually wrapping core yarn, decorative yarn and fixed yarn, and when the wrapping structure and the wrapping proportion are changed on line, the color of the fancy yarn can be changed on line. According to formula (6) (7) (8) (9) (10), if six sliver ρ is fed during two twisting ₁ 、ρ ₂ 、ρ ₃ 、ρ ₄ 、ρ _x 、ρ _g The colors of the fancy yarn can be regulated and controlled by changing the coating ratio when the fancy yarn is respectively selected from red, orange, yellow, green, blue, purple, black, white and the like.

Let the coating ratio of the fancy yarn be K _h1 (t)、K _h2 (t)、K _h3 (t)、K _h4 (t) the linear density of the fancy yarn is ρ _hy (t) regulating and controlling the servo motor through the PLC and driving V _h (t)、V _z (t)、V _q1 (t)、V _q2 (t)、V _q3 (t)、V _R1 (t) making it satisfy the following formula:

V _h (t)＝K _h1 (t)*ρ _hy (t)/ρ ₁ (21)

V _z (t)＝C*K _h2 (t)*ρ _hy (t)/ρ ₂ (22)

V _f1 (t)＝K _h3 (t)*ρ _hy (t)/ρ ₃ (23)

V _f2 (t)＝K _h4 (t)*ρ _hy (t)/ρ ₄ (24)

V _R1 (t)＝K _h5 (t)*ρ _hy (t)/ρ _X (25)

therefore, the speed of the rear roller, the middle roller, the auxiliary roller and the front roller and the twist of the wrapping twist of the front roller can be regulated and controlled by the PLC, and the wrapping structure and the wrapping ratio of each component of the fancy yarn can be regulated and controlled, so that the online color change of the fancy yarn can be regulated and controlled online.

Example 3

The present embodiment is basically the same in structure as embodiment 1, except that:

as shown in fig. 6, the control system further includes a first comparing module, where the first comparing module is connected to the first sensor, the second sensor, the third sensor, the fourth sensor and the controller, respectively, and the first comparing module is used to monitor a rotation speed ratio between the middle roller shaft 6, the rear roller shaft 4, the first auxiliary shaft 5 and the second auxiliary shaft 9, and the controller adjusts and controls the rotation speed of the middle roller shaft 6, the rear roller shaft 4 and/or the auxiliary shaft according to a value fed back by the first comparing module, so as to adjust and control the blending ratio of the first component yarn, the second component yarn, the third component yarn and the fourth component yarn.

In order to accurately and rapidly realize yarn blending ratio regulation and control, the invention directly regulates and controls according to the numerical value fed back by the first comparison module, even if the rotation speeds of the middle roller shaft 6, the rear roller shaft 4 or the two auxiliary shafts respectively exceed the set error range due to various error reasons, the invention can continue production without additionally regulating the actual rotation speeds of the rear roller shaft 4, the middle roller shaft 6, the first auxiliary shaft 5 or the second auxiliary shaft 9 as long as the rotation speed ratio of the rear roller shaft 4, the middle roller shaft 6, the first auxiliary shaft 5 and the second auxiliary shaft 9 fed back by the first comparison module (namely the feeding speed ratio of the first component yarn, the second component yarn, the third component yarn and the fourth component yarn) is ensured to be in the set error range.

Compared with the prior art, the invention only needs to monitor one parameter compared with the prior art that a plurality of parameters such as the middle roller and the back roller in different channels are monitored simultaneously, the invention widens the regulation precision of the middle roller and the back roller, increases the redundancy of system control, highlights the importance of the rotation speed ratio of the upper roller of different channels, greatly improves the control precision of the blending ratio of yarns while greatly reducing the workload of the controller processing, and in addition, avoids the shutdown or adjustment time in the production process, and improves the production efficiency of equipment by more than 30 percent.

The comparison module may be a prior art, may be an existing comparator or integrated comparison circuit, or may be a comparison module in the form of software in the controller CUP. The sensor is also in many forms, and can be, for example, a photoelectric encoder or a Hall rotation speed sensor.

In addition, the second comparison module is respectively connected with the fifth sensor, the sixth sensor, the seventh sensor and the controller, and is used for monitoring the rotation speed ratio among the three front rollers, and the controller regulates and controls the first front shaft, the second front shaft or the front roller shaft according to the numerical value fed back by the second comparison module, so that the pattern combination and the pattern size are regulated and controlled. Therefore, the control precision of the control system is further relaxed, the redundancy of system control is increased, the importance of the front roller rotating speed ratio on different channels is highlighted, the processing workload of the controller is greatly reduced, the control precision of the blending ratio of yarns is greatly improved, in addition, the shutdown or adjustment time in the production process is avoided, and the production efficiency of the equipment is improved.

Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present invention, and not for limiting the same; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the invention.

Claims

1. The five-channel hollow spindle fancy yarn forming device is characterized by comprising a first channel for passing a first component yarn, a second channel for passing a second component yarn, a third channel for passing a third component yarn, a fourth channel for passing a fourth component yarn and a fifth channel for passing a fifth component yarn;

a hollow spindle is arranged at the second twisting point, the fancy yarn main body passes through the hollow spindle, the hollow spindle rotates rapidly, and the sixth component yarn on the hollow spindle is intersected with the fancy yarn main body and coats the fancy yarn main body;

The first rear roller and the first middle roller are connected through a first transmission gear set, and the first transmission gear set is used for keeping the traction ratio between the first middle roller and the first rear roller constant and not more than 1.4;

the second rear roller and the second middle roller are connected through a second transmission gear set, and the second transmission gear set is used for keeping the traction ratio between the second middle roller and the second rear roller constant and not more than 1.4;

the third rear roller and the third middle roller are connected through a third transmission gear set, and the third transmission gear set is used for keeping the traction ratio between the third middle roller and the third rear roller constant and not more than 1.4;

the fourth rear roller and the fourth middle roller are connected through a fourth transmission gear set, and the fourth transmission gear set is used for keeping the traction ratio between the fourth middle roller and the fourth rear roller constant and not more than 1.4;

an upper leather roller is correspondingly arranged above the middle roller on the same channel among the first channel, the second channel, the third channel and the fourth channel, and the yarn forming device also comprises an upper leather ring sleeved on the upper pin and the middle roller and keeping synchronous movement with the middle roller, and a lower leather ring sleeved on the lower pin and the middle roller and keeping synchronous movement with the middle roller; the distance between the holding jaws of the upper leather collar and the lower leather collar and the jaw line of the front roller is less than 3mm.

2. The hollow spindle fancy yarn forming device of claim 1 further comprising a back roller shaft and a middle roller shaft;

in the circumferential direction of the rear roller shaft, the first rear roller is sleeved on the rear roller shaft relatively fixedly, and the second rear roller, the third rear roller and the fourth rear roller are sleeved on the rear roller shaft relatively rotatably;

3. The hollow spindle yarn forming device as in claim 1 further comprising a front roller shaft; in the circumferential direction of the front roller shaft, the first front roller and the second front roller are sleeved on the front roller shaft in a relatively rotatable manner, and the third front roller is sleeved on the front roller shaft in a relatively fixed manner.

4. The hollow spindle fancy yarn forming device of claim 1 wherein said first drive gear set comprises a first drive gear, a first bridge gear and a first driven gear which are sequentially meshed for transmission; the first driving gear is fixedly connected with the first rear roller in a coaxial manner, and the first driven gear is fixedly connected with the first middle roller in a coaxial manner;

5. The hollow spindle yarn forming device of claim 4 further comprising a first auxiliary shaft;

6. The apparatus of claim 5, further comprising a second auxiliary shaft disposed parallel to the first auxiliary shaft, wherein a transmission gear engaged with the fourth carrier gear is fixedly installed on the second auxiliary shaft.

7. The apparatus of claim 3, further comprising a first front shaft and a second front shaft, wherein the first front shaft is connected to the first front roller through a first gear pair, the second front shaft is connected to the second front roller through a second gear pair, and the rotation speeds of the first front roller and the second front roller can be controlled by the first front shaft and the second front shaft, respectively.

8. The hollow spindle yarn forming device of claim 7 wherein said first gear train pair comprises: the first main gear and the first auxiliary gear are meshed with each other for transmission, the first main gear is fixedly sleeved on the first front shaft, and the first auxiliary gear is coaxially and fixedly connected with the first front roller;

9. The apparatus according to claim 1, further comprising a filament bobbin which is fitted around the hollow spindle and rotates synchronously with the hollow spindle, the sixth component yarn being wound around the filament bobbin;

the hollow spindle comprises a twister for twisting the fancy yarn body.