CN209741349U

CN209741349U - Double-channel hollow spindle fancy yarn forming device

Info

Publication number: CN209741349U
Application number: CN201920318066.3U
Authority: CN
Inventors: 费强; 薛元; 霍允乐
Original assignee: Jiangyin Meilun Yarn Industry Co Ltd
Current assignee: Jiangyin Meilun Yarn Industry Co Ltd
Priority date: 2019-03-13
Filing date: 2019-03-13
Publication date: 2019-12-06
Anticipated expiration: 2029-03-13

Abstract

the utility model provides a double-channel hollow spindle fancy yarn forming device, which comprises a first channel, a first auxiliary channel, a second auxiliary channel and a yarn fixing channel; the three front rollers on the channel can be arranged in a relative rotating way; the first and second component yarns are alternately twisted by a first twisting point to form a fancy yarn main body; and a hollow spindle is arranged at the second twisting point, the fancy yarn main body penetrates through the hollow spindle, the hollow spindle rotates rapidly, and the fixed yarn on the hollow spindle is intersected with the fancy yarn main body and wraps the fancy yarn main body. The utility model discloses a one-step method spinning of fancy yarn, through the speed of regulation and control decoration yarn and core yarn in coordination with the feeding twist point, the linear density and the blending ratio of regulation and control decoration yarn, the twist of regulation and control core yarn simultaneously, the color of regulation and control core yarn and decoration yarn's switching etc. technical means realizes fancy yarn bamboo joint, big tripe, knot, circle, pigtail and the online change of form, expands the new variety of style yarn.

Description

Double-channel hollow spindle fancy yarn forming device

Technical Field

the utility model belongs to the technical field of spinning technique among the textile engineering and specifically relates to a hollow spindle fancy yarn forming device of binary channels.

background

the hollow spindle spinning machine usually adopts a two-step method for producing fancy yarns, and in the first step, core yarns, decorative yarns and solid yarns are respectively spun; and secondly, false twisting the core yarn and the decoration yarn fed at different speeds by using a hollow spindle device, twisting the decoration yarn on the core yarn to form patterns such as knots, loops, braids and the like by overfeeding the core yarn through the decoration yarn, and then binding and fixing the formed patterns by using the fixing yarn unwound from the hollow spindle to form the hollow spindle pattern type yarn. The main problems of the hollow spindle spinning machine for producing fancy yarn are as follows:

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

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

3) When the hollow spindle is used for spinning the three-thread fancy yarn comprising the (core yarn, the decoration yarn and the solid yarn), only simple combination of one decoration yarn and one core yarn can be realized, and a multiple combination mode of a plurality of decoration yarns and a plurality of core yarns can not be realized, so that the online regulation and control of the combination mode of the decoration yarns and the core yarns can not be realized.

4) When the fancy yarn is spun by the hollow spindle, the change of the cladding ratio of the core yarn, the decoration yarn and the solid yarn can not be regulated and controlled: when a three-thread fancy yarn containing (core yarn, decorative yarn and solid yarn) is spun by a hollow spindle, a regulating means is lacked in the process of twisting the core yarn and the decorative yarn and then coating the core yarn and the decorative yarn by 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 and controlled on line.

5) Low efficiency, high production cost and the like. Because the hollow spindle spinning machine has the problems, the wrapping structure, the shape, the color, the style and the hand feeling of the fancy yarn are difficult to change on line through the regulation and control of spinning equipment and a spinning process in the spinning process of the fancy yarn, and the requirements of fancy yarn garment materials with various shape changes, rich and exquisite colors and agile style cannot be met.

SUMMERY OF THE UTILITY MODEL

an object of the utility model is to provide a device and one-step method forming method of hollow spindle spinning fancy yarn of binary channels, through technologies such as reversal draft-carry in coordination-mutual twining and cladding, decorate yarn, core yarn and solid yarn combination and make up into the complicated fancy yarn that contains combination flower type such as knot, circle, pigtail to solve at least one technical problem that exists among the prior art.

In order to solve the technical problem, the utility model provides a double-channel hollow spindle fancy yarn forming device, which comprises a first channel for the first component yarn to pass through, a first auxiliary channel for the second component yarn to pass through, and a second auxiliary channel for the third component yarn to pass through;

The first channel is sequentially provided with a rear roller, a middle roller, a first front roller, a first twisting point and a second twisting point; the first auxiliary channel is sequentially provided with a second front roller, the first twisting point and the second twisting point; a third front roller, the first twisting point and the second twisting point are sequentially arranged on the second auxiliary channel; in the circumferential direction, the first front roller, the second front roller and the third front roller can be arranged in a relative rotating way;

The area among the rear roller, the middle roller and the first front roller on the first channel is a drafting area, and an interactive twisting triangular area is formed among the first front roller, the second front roller, the third front roller and the first twisting point; the first front roller, the second front roller and the third front roller respectively move independently and respectively introduce the corresponding component yarns into the interactive twisting triangular area; one or more of the first component yarn, the second component yarn and the third component yarn are led to the interactive twisting triangular area and then twisted to form a fancy yarn main body;

And a hollow spindle is arranged at the second twisting point, the fancy yarn main body penetrates through the hollow spindle, the hollow spindle rotates rapidly, and the fixed yarn on the hollow spindle is intersected with the fancy yarn main body and wraps the fancy yarn main body.

The utility model discloses break through the technical bottleneck of hollow spindle spinning in the aspect of fancy yarn shaping, implement the reversal draft through the one-step method, in coordination with the output, alternately twine and twist and cladding technology, fancy yarn (containing core yarn, decoration yarn and solidus) one-step method system of spinning has been realized, simultaneously through the output speed of regulation and control decoration yarn and core yarn, the linear density and the blending ratio of regulation and control decoration yarn, the twist of regulation and control core yarn, technological means such as the switching of regulation and control core yarn and decoration yarn realize fancy yarn slub, big tripe, the knot, the circle, the color of braid and the online change of form, expand the new variety of fancy yarn.

The yarn fixing device further comprises a filament bobbin, the filament bobbin is sleeved on the hollow spindle and synchronously rotates along with the hollow spindle, and the fixed yarn is wound on the filament bobbin.

Further, the hollow spindle comprises a false twister for twisting the fancy yarn main body.

further, the back roller and the 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 middle roller and the back roller constant and not more than 1.4.

The utility model provides a form one-level draft unit (being first draft district) between well roller and the back roller, preceding roller and well roller constitute second grade draft unit (being the second draft district), and the well, back roller velocity ratio of same passageway is invariable and be less than 1.4 to and the synchronous variable speed of preceding roller in this passageway relatively, the well, back roller of different passageways change speed in turn relatively, realize the alternation draft to first component yarn. The first-level drafting is pre-drafting, the constant C is the first-level drafting ratio eh, the constant C is the constant drafting ratio eh of the first-level drafting is not more than 1.4, the continuity of the roving can be ensured, and no drafting singular point can 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 for slippage in the main drafting process is made, the end 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.

Further, the first auxiliary channel further comprises a first leading-out roller (a first unwinding shaft), and the first leading-out roller, the second front roller, the first twisting point and the second twisting point are sequentially arranged;

And/or the second auxiliary channel further comprises a second leading-out roller (a second unwinding shaft), and the second leading-out roller, the third front roller, the first twisting point and the second twisting point are sequentially arranged.

preferably, an upper middle leather roller is correspondingly arranged above the middle roller, the yarn forming device further comprises an upper leather ring which is sleeved on the upper middle leather roller and the upper pin and keeps synchronous motion with the middle roller, and a lower leather ring which is sleeved on the middle roller and the lower pin and keeps synchronous motion with the middle roller; the distance between the holding jaw of the upper leather ring and the holding jaw of the lower leather ring and the front roller jaw line is less than 3 mm.

the secondary draft eq is a dynamic main draft, the speed of the middle roller is changed relative to the front roller, when the blending ratio K of the first component yarn in the first channel is 0 percent, when the secondary draft ratio eq of the channel yarn is ∞, the channel yarn forms a draft singular point in a second draft zone, the distance delta between the draft singular point and the jaw of the front roller is less than or equal to 3mm (in the prior art, the gauge between the rear roller and the middle roller is generally greater than 25mm, the draft singular point position of the first draft zone is randomly distributed between the middle roller and the rear roller, when the draft singular point distance exceeds 3mm from the jaw of the middle roller, the time for the draft singular point to be fed into the jaw of the middle roller again has an uncertain factor, if the matching is not good, coarse details are generated, or the spinning ends are broken, so that the spinning becomes an unstable process, and the reliability of the spinning and the quality of the finished yarn are influenced). When K is gradually increased, the slivers held by the upper and lower leather rings are instantaneously fed into the jaw of the front roller to carry out secondary drafting along with the synchronous start of the rear roller and the middle roller, so that the drafting singular points in a secondary drafting zone can not influence the stability of spinning.

Furthermore, the device also comprises a rear roller shaft, a middle roller shaft and an auxiliary shaft;

the rear roller is movably sleeved on the rear roller shaft in a relative rotation way (for example, in a bearing way) in the circumferential direction of the rear roller shaft; in the circumferential direction of the middle roller shaft, the middle roller can be movably sleeved on the middle roller shaft in a relative rotation manner; the first transmission gear set comprises a first driving gear, a first intermediate gear and a first driven gear which are sequentially meshed for transmission; the first driving gear is fixedly connected with the rear roller in a coaxial manner, and the first driven gear is fixedly connected with the middle roller in a coaxial manner; the first intermediate gear is sleeved on the auxiliary shaft relatively and fixedly.

Therefore, the rear roller and the middle roller can be synchronously driven to run through the auxiliary shaft, and the feeding speed of the first component yarn is further adjusted.

Further, the device also comprises a front roller shaft; in the circumferential direction of the front roller shaft, the first front roller is sleeved on the front roller shaft relatively and fixedly; the second front roller and the third front roller can be sleeved on the front roller shaft in a relatively rotating manner.

further, the roller mechanism further comprises a second front shaft and a third front shaft, wherein the second front shaft is connected with the second front roller through a second gear transmission pair; the third front shaft is connected with the third front roller through a third gear transmission pair; the second front roller and the third front roller can be driven to rotate through the second front shaft and the third front shaft respectively.

further, the second gear transmission pair includes: the second main gear and the second auxiliary gear are in meshed transmission with each other, 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 manner;

the third gear transmission pair includes: a third main gear and a third pinion which are in meshed transmission with each other, wherein the third main gear is fixedly sleeved on the third front shaft, and the third pinion is fixedly connected with the third front roller in a coaxial manner.

Wherein the back roller, the middle roller and the front roller are preferably nested rollers.

Wherein, each back roller, middle roller and preceding roller top correspond respectively to be provided with the epitheca roller, and the epitheca roller is used for grasping the yarn with the roller cooperation of below.

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 the servo driver in sequence;

The servo motor includes: the first servo motor is used for driving the front roller shaft, the second servo motor is used for driving the second front shaft, the third servo motor is used for driving the auxiliary shaft to rotate, the fourth servo motor is used for driving the first extraction roller to rotate, the fifth servo motor is used for driving the first extraction roller to rotate, the sixth servo motor is used for driving the third front shaft, and the hollow spindle motor is used for driving the hollow spindle to rotate;

the rotation speed sensor includes: the first sensor, the second sensor, the third sensor, the fourth sensor, the fifth sensor and the sixth sensor are respectively used for monitoring the rotating speeds of the front roller shaft, the second front shaft, the auxiliary shaft, the first leading-out roller, the second leading-out roller and the third front shaft, and the hollow spindle sensor is used for monitoring the rotating speed of the hollow spindle.

The utility model provides a controller loops through the feeding speed of component yarn on servo driver and the servo motor control yarn passageway, and rotational speed sensor real-time supervision component yarn's actual feeding speed to feed the monitoring value back to the controller, the controller can be according to the size of monitoring value adjustment yarn passageway on control signal.

furthermore, the twisting mechanism comprises a ring plate, and the controller controls the ring plate to move through a servo driver and a servo motor. In addition, the control system also includes a series of instructions and modular programs.

the control system further comprises a first comparison module, the first comparison module is respectively connected with a third sensor, a fourth sensor, a fifth sensor and the controller, the first comparison module is used for monitoring the rotation speed ratio among the auxiliary shaft, the first leading-out roller and the second leading-out roller, and the controller regulates and controls the rotation speed of the auxiliary shaft, the first leading-out roller and the second leading-out roller according to a numerical value fed back by the first comparison module, so that the blending ratio of the first component yarn, the second component yarn and the third component yarn is regulated and controlled.

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

adopt above-mentioned technical scheme, the utility model discloses following beneficial effect has:

The utility model provides a pair of adopt hollow spindle fancy yarn forming device of above-mentioned binary channels, have two tunnel spinning passageways and two hollow spindle spinning systems of twist point through the construction, accomplish mutual twist and form fancy yarn main part at first twist point (first twist point department), carry out the cladding twist by the solid yarn of output and the fancy yarn main part that has taken shape at second twist point (second twist point department), form the fancy yarn who contains decorations yarn, core yarn and solid yarn, realize the spinning of the hollow spindle fancy yarn of decorations yarn, heart yearn, the solid one-step process.

in addition, by regulating and controlling the speed of the rear roller, the middle roller and the three front rollers to cooperatively change, fancy yarns with multiple structures such as single-twist coating, alternate-twist coating, winding-twist coating and the like are spun; and through regulating and controlling the speed of the back roller, the middle roller and the three front rollers to change cooperatively, the combination of the decoration yarn and the core yarn is changed online, the combination of patterns such as knots, braids and loops is changed online, the sizes of the patterns such as the knots, the braids and the loops are changed online, the colors of the patterns such as the knots, the braids and the loops are changed online, and the combined fancy yarn with changeable appearance forms is spun; finally, the coating ratios of the core wire, the decoration wire and the solid wire are regulated and controlled by regulating and controlling the speeds of the rear roller, the middle roller and the three front rollers to cooperatively change, the colored fancy yarns with online color change are spun, and the production efficiency is greatly improved.

Additionally, the utility model also discloses a fancy yarn forming method of adopting above-mentioned hollow spindle fancy yarn forming device of binary channels.

The utility model discloses a hollow spindle spinning device comprises the core yarn passageway of the draft passageway of roving and two way staple fiber yarn (or filament) and cladding yarn passageway all the way. The roving is subjected to alternating drafting to form untwisted strands with variable thickness, the untwisted strands are output by a drafting channel and are intersected with the yarns (or filaments) output by the other two core yarn channels at a first twisting point, and under the action of twisting effect, the three strands are twisted alternately to form a fancy yarn main body; due to the effect of the hollow spindle twisting, the solid yarn (or filament) and the main body of the formed fancy yarn are subjected to cladding twisting at the second twisting point, so that the fancy yarn comprising the decoration yarn, the core yarn and the solid yarn is formed, and the spinning of the hollow spindle fancy yarn in one step of decoration yarn, core yarn and solid yarn is realized.

Further, by adjusting and controlling the speed of the rear roller, the middle roller and the three front rollers on line, the fancy yarns with the single-twist coating structure, the fancy yarns with the alternate-twist coating structure and the fancy yarns with the winding and twisting coating structure can be respectively spun by the input decorative yarns and the core yarns in a coordinated manner;

Twisting an untwisted strand or yarn through the first channel, the first auxiliary channel or the second auxiliary channel at the first twisting point, and covering the untwisted strand or yarn at the second twisting point by a fixed yarn to form a single-twist covered structured fancy yarn;

two untwisted strands or yarns are respectively led into the alternating twisting triangular area through two channels of the first channel, the first auxiliary channel or the second auxiliary channel, and are twisted at a non-constant speed at the first twisting point, and then are wrapped by the fixed yarns at the second twisting point to form fancy yarns with an alternating twisting and wrapping structure;

three untwisted strands or yarns are respectively led into the interactive twisting triangular area through the first channel, the first auxiliary channel and the second auxiliary channel, and are wrapped by the fixed yarns at the second twisting point to form the fancy yarn with a twisting and wrapping structure after non-constant-speed twisting is carried out at the first twisting point.

Further, the speeds of the first front roller, the second front roller and the third front roller are respectively Vq1, Vq2 and Vq3, and Vq1, Vq2 and/or Vq3 are regulated and controlled on line; the speed of the rear roller, the middle roller and the three front rollers can be adjusted and controlled on line, so that the online change of the combination modes of the decoration yarns and the core yarns, the online change of the combination modes of patterns such as knots, braids and loops, the online change of the sizes of the patterns such as the knots, the braids and the loops, the online change of the colors of the patterns such as the knots, the braids and the loops and the online change of the colors of the patterns such as the knots, the braids and the loops can be realized, and the combined fancy yarns with changeable appearance forms can.

furthermore, the first component yarn, the second component yarn and the third component yarn are respectively introduced into the interactive twisting triangular area through a first front roller, a second front roller and a third front roller, the component yarn with the lowest speed of the front rollers is core yarn of fancy yarn, the component yarn with the higher speed of the front rollers is decoration yarn of the fancy yarn, and online change of the combination mode of the decoration yarn and the core yarn in the fancy yarn is realized by adjusting the speeds of the first front roller, the second front roller and the third front roller on line.

further, the spinning step of the fancy yarn with the online change of the combination of patterns such as knots, braids, loops and the like comprises the following steps:

First, when Vq1(t) Vq2(t) Vq3(t) is (1.15-1.3) 1:1, the first component yarn (the cover yarn Y) is alternately twisted and kinked on the second component yarn and the third component yarn (the core yarn X1+ X2) to form a knot;

When Vq1(t) Vq2(t) Vq3(t) is (1.4-4) to 1:1, the first component yarn (the cover yarn Y) is alternately twisted and kinked to form loops on the second component yarn and the third component yarn (the core yarn X1+ X2);

② when Vq1(t) and Vq2(t) and Vq3(t) are 1 to (1.15-1.3), the second component yarn and the third component yarn (the decoration yarn X1+ X2) are alternately twisted and kinked on the first component yarn (the core yarn Y) to form knots;

When Vq1(t) and Vq2(t) and Vq3(t) are equal to 1 to (1.4-4) and (1.4-4), the second component yarn and the third component yarn (the decorative yarn X1+ X2) are alternately twisted and kinked on the first component yarn (the core yarn Y) to form a braid or a loop;

③ when Vq1(t) Vq2(t) Vq3(t) is 1:1 (1.15-1.3), the third component yarn (the finish yarn X2) is alternately twisted and kinked on the first component yarn and the second component yarn (the core yarn (X1+ Y)) to form a knot;

When Vq1(t) Vq2(t) Vq3(t) is 1:1 (1.4-4), the third component yarn (the finish yarn X2) is alternately twisted and kinked on the first component yarn and the second component yarn (the core yarn (X1+ Y)) to form a braid or a loop;

When Vq1(t) and Vq2(t) and Vq3(t) are equal to (1.15-1.3) and 1, the first component yarn and the second component yarn (the decorative yarn (X1+ Y)) are alternately twisted and twisted to form a knot on the third component yarn (the core yarn X2);

when Vq1(t) to Vq2(t) to Vq3(t) is (1.4-4) to 1, the first component yarn and the second component yarn (the decorative yarn (X1+ Y)) are alternately twisted and kinked on the third component yarn (the core yarn X2) to form a braid or a loop;

Fifthly, when Vq1(t), Vq2(t) and Vq3(t) are equal to (1.15-1.3) and 1: 1.15-1.3), the first component yarn and the third component yarn (decoration yarn (X2+ Y)) are alternately twisted and twisted on the second component yarn (core yarn X1) to form knots;

When Vq1(t) Vq2(t) Vq3(t) is (1.4-4) to 1 (1.4-4), the first component yarn and the third component yarn (the decorative yarn (X2+ Y)) are alternately twisted and kinked on the second component yarn (the core yarn X1) to form a braid or a loop;

sixthly, when Vq1(t) to Vq2(t) to Vq3(t) is 1 to (1.15-1.3) to 1, the second component yarn is alternately twisted and kinked on the first component yarn and the third component yarn to form knots;

when Vq1(t) Vq2(t) Vq3(t) is 1 to (1.4-4) to 1, the second component yarn is alternately twisted and kinked to form a braid or loop on the first component yarn and the third component yarn.

Further, the spinning step of the double-circle fancy yarn comprises the following steps:

When Vq1(t), Vq2(t) and Vq3(t) are (0.4-0.25) to 1:1, the second component yarn and the third component yarn are decoration yarns (decoration yarns X1 and X2), and the first component yarn is core yarn; the second component yarn and the third component yarn are low twist yarns with a twist factor lower than 320, the second component yarn is alternately twisted and twisted on the first component yarn to form a first circle, and the third component yarn is alternately twisted and twisted on the first component yarn to form a second circle, thereby forming the double-circle fancy yarn;

The linear density and twist of the second component yarn and the third component yarn (the decoration threads X1 and X2) are equal, and the second component yarn and the third component yarn are respectively twisted and twisted on the first component yarn to form a symmetrical double-loop fancy yarn; otherwise, respectively twisting and twisting the second component yarn and the third component yarn on the first component yarn to form an asymmetric double-circle fancy yarn;

that is, the second component yarn and the third component yarn (the molding yarns X1 and X2) have different linear densities and equal twists, or the second component yarn and the third component yarn (the molding yarns X1 and X2) have equal linear densities and different twists, or the second component yarn and the third component yarn (the molding yarns X1 and X2) have different linear densities and different twists, and thus the asymmetric double-loop design yarn is formed on the first component yarn.

further, the spinning step of the double-braid fancy yarn comprises the following steps:

When Vq1(t), Vq2(t) and Vq3(t) are (0.4-0.25) to 1:1, the second component yarn and the third component yarn are decoration yarns (decoration yarns X1 and X2), and the first component yarn (core yarn Y) is core yarn; the second component yarn and the third component yarn are strong twist yarns with the twist factor higher than 480, the second component yarn is alternately twisted and twisted on the first component yarn to form a first braid, and the third component yarn is alternately twisted and twisted on the first component yarn to form a second braid, so that the double-braid fancy yarn is formed;

The second component yarn and the third component yarn have equal density and twist, so that a symmetrical double-braid fancy yarn is formed; and the second component yarn and the third component yarn have unequal densities or twists, so that the asymmetric double-braid fancy yarn is formed.

If the thread density and the twist of the decorative threads X1 and X2 are equal, a symmetrical double-braid fancy thread is formed; if the linear density of the decoration lines X1 and X2 is not equal and the twist is equal, or the linear density of the decoration lines X1 and X2 is equal and the twist is not equal, or the linear density of the decoration lines X1 and X2 is not equal and the twist is not equal, an asymmetric double-braid fancy yarn is formed.

further, the spinning steps of the fancy yarn with patterns of knots, braids, loops and the like which change on line comprise:

The sizes of patterns such as knots, plaits, loops and the like of the fancy yarns depend on the thicknesses and twists of the decorative yarns and the core yarns and the overfeed speed of the decorative yarns relative to the core yarns. When forming knots, the fancy yarn with large decorative yarn coarse twist is larger than the fancy yarn with small decorative yarn fine twist; when the circles are formed, the fancy yarn with the large overfeed ratio of the thick twist of the decorative yarn is larger than the fancy yarn with the small overfeed ratio of the thin twist of the decorative yarn, and the circles formed by twisting are larger; when the braid is formed, the twisted braid formed by the fancy yarn with the large overfeed ratio of the coarse twist of the decorative yarn is longer than the twisted braid formed by the fancy yarn with the small overfeed ratio of the fine twist of the decorative yarn;

Regulating size of yarn knot

When Vq1(t) is Vq2(t) and Vq3(t) is (1.15-1.3) 1:1, the first component yarn is a decorative yarn, and the second component yarn and the third component yarn are core yarns; the first component yarn (the decorative yarn Y1) is alternately twisted and twisted to form knots on the second component yarn and the third component yarn as the core yarn (X1+ X2)); the linear density of the decorative yarn is as follows:

The change of the linear density of the decoration yarns can be regulated and controlled by regulating and controlling the speed Vh (t) of the back roller through the PLC, the linear density of the decoration yarns is increased when the feeding speed of the back roller is increased, and the linear density of the decoration yarns is reduced when the feeding speed of the back roller is reduced. Thereby regulating and controlling the size of the formed fancy yarn knots to change on line;

② regulating and controlling size of fancy yarn ring

When Vq1(t) is Vq2(t) and Vq3(t) is (1.3-4) 1:1, the first component yarn is a decoration yarn, and the second component yarn and the third component yarn are core yarns; the first component yarn (the decorative yarn Y1) is alternately twisted and twisted to form loops on the second component yarn and the third component yarn as the core yarn (X1+ X2)); the linear density of the decorative yarn is as follows:

The change of the linear density of the decoration yarns can be regulated and controlled by regulating and controlling the speed Vh (t) of the back roller, the linear density of the decoration yarns is increased when the feeding speed of the back roller is increased, and the linear density of the decoration yarns is reduced when the feeding speed of the back roller is reduced;

meanwhile, the speed difference of the first front roller relative to the second front roller and the third front roller is regulated, so that the overfeed amount of the linear speed Vq1(t) of the decorative yarn relative to the linear speed Vq2(t) of the core yarn Vq3(t) is regulated, and under the looping condition, the loop is large when the decorative yarn is thick and the overfeed amount is large, the loop is small when the decorative yarn is thin and the overfeed amount is small, so that the size of the formed fancy yarn loop is regulated and controlled to change on line;

regulating and controlling thickness of fancy yarn plait

when Vq1(t) is Vq2(t) is Vq3(t) is 1, (1.3-4) and (1.3-4), the first component yarn is a core yarn, and the second component yarn and the third component yarn are decoration yarns; the second component yarn and the third component yarn are strong twist yarns (the twist coefficient is not less than 480), and the second component yarn and the third component yarn are immediately twisted on the first component yarn under the action of self twisting stress to form a braid;

The linear densities of the second component yarn and the third component yarn serving as the decorative yarn are rho x1 and rho x2, the overfeeding amount of the speed Vq1(t) of the second component yarn and the speed Vq2(t) of the third component yarn relative to the speed Vq3(t) of the first component yarn is regulated, when the overfeeding amount is large, the braid is long, and when the overfeeding amount is small, the braid is short, so that the length of the formed fancy yarn braid is regulated and controlled to change on line.

further, the spinning step of the fancy yarn with the coating ratio changing with the linear density in line comprises the following steps:

the first component yarn, the second component yarn, the third component yarn and the solid yarn are yarns with different colors, and the online change of the colors of the fancy yarns is realized by online adjusting the wrapping structure, the wrapping ratio and/or the linear density of the fancy yarns.

the fancy yarn is formed by mutually wrapping core yarn, decorative yarn and solid yarn, and when the wrapping structure and the wrapping proportion are changed on line, the color of the fancy yarn is changed on line. According to the formulas (6), (7), (8), (9) and (10), if the four yarns ρ s1, ρ x1, ρ x2 and ρ g fed in the two twisting processes are respectively red, yellow, blue, black and the like, the colors of the fancy yarn can be adjusted and controlled by changing the coating ratio. Let the linear density of the fancy yarn be ρ hy (t), and the coating ratios of the fancy yarn be Kh1(t), Kh2(t), Kh3(t), Kh4 (t). Then

the online change of the density and the coating ratio of the fancy yarn can be regulated and controlled by regulating and controlling the servo motors by the PLC and driving Vh (t), Vq1(t), Vq2(t), Vq3(t), Vx1(t) and Vx2 (t).

the following explains the structural parameters of the fancy yarn formed by the alternating drafting, winding and twisting covered hollow spindle spinning system.

let the linear density of the first component yarn (roving) as the decoration yarn, the density of the second component yarn (i.e., the core yarn 1) and the density of the third component yarn (i.e., the core yarn 1) and the linear density of the solid yarn be ρ s1, ρ x1, ρ x2 and ρ g, respectively, after alternating draft, alternate twist and solid yarn coating, the linear density of the fancy yarn be ρ hy, and let the three front roller speeds, the rear roller speed and the middle roller speed in the spinning process, and the core yarn feeding speeds of the first drawing roller and the second drawing roller be Vq1(t), Vq2(t), Vq3(t), vh (t), vz (t), Vx1(t) and Vx2(t), respectively, and C is 1.25, which is the speed ratio of the middle roller and the rear roller in each passage. After the alternate drafting, alternate twisting and yarn fixing cladding of the decorative yarn core yarn, the structural parameters of the formed fancy yarn are as follows:

1. linear density of decorative yarn

2. Linear density of core yarn:

3. Linear density of the solid yarn:

ρ(t)＝ρ (3)

4. Linear density and coating ratio of fancy yarn

drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the embodiments or the description in the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

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 three passages of the hollow fancy yarn forming apparatus of example 1;

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

Fig. 4 is a schematic circuit diagram of a hollow spindle fancy yarn forming device in embodiment 1 of the present invention;

fig. 5 is a circuit diagram of a comparison module in the hollow-spindle fancy yarn forming apparatus according to embodiment 3 of the present invention.

reference numerals:

y-a first component yarn; x1-second component yarn; x3-third component yarn; g1-fixing yarn; r1-first draw-off roller; r2-second draw-off roller; r3-hollow spindle; d1 — first twist point; d2 — second twist point; 41-a back roller; 51-a first carrier gear; 61-middle roller; 71-a first front roller; 72-a second front roller; 73-a third front roller; 4-rear roller shaft; 5-an auxiliary shaft; 6-medium roller shaft; 7-front roller shaft; 8-a second front axle; 11-a third front axle; 411 — a first drive gear; 611 — a first driven gear; 82-a second main gear; 721-a second counter gear; 113-a third main gear; 731-third pinion; p4-posterior epithelial roll; p6-middle upper leather roller; p7-anterior epithelial roller; q1-epithelial ring; q2-lower leather collar.

Detailed Description

The technical solution of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Example 1

as shown in fig. 1 to 3, the double-channel hollow spindle fancy yarn forming device provided by the embodiment comprises a first channel ABC1D 2E for passing a first component yarn Y, a first auxiliary channel R1C2D1D2E for passing a second component yarn X1, and a second auxiliary channel R2C3D1D2E for passing a third component yarn X2; the first channel is sequentially provided with a rear roller 41, a middle roller 61, a first front roller 71, a first twisting point D1 and a second twisting point D2; the first auxiliary channel is sequentially provided with a second front roller 72, a first twisting point D1 and a second twisting point D2. The second auxiliary channel is sequentially provided with a third front roller 73, a first twisting point D1 and a second twisting point D2. The third front roller 73 and the second front roller 72 are rotatably provided relative to each other in the circumferential direction.

the area among the rear roller 41, the middle roller 61 and the first front roller 71 on the first channel is a drafting area, and an alternate winding and twisting triangular area is formed among the first front roller 71, the second front roller 72, the third front roller 73 and the first twisting point; the first front roller, the second front roller and the third front roller respectively move independently and respectively introduce the corresponding component yarns into the interactive twisting triangular area; the first component yarn and the second component yarn are led to the alternate twisting triangular area and then twisted to form the fancy yarn main body. The second twisting point D2 is provided with a hollow spindle R3, the fancy yarn main body passes through the hollow spindle R3, the hollow spindle R3 rotates rapidly, and the fixed yarn on the hollow spindle R3 is intersected with the fancy yarn main body and coats the fancy yarn main body.

the embodiment also comprises a filament bobbin (not shown), the filament bobbin is sleeved on the hollow spindle and synchronously rotates along with the hollow spindle, and the fixed yarn is wound on the filament bobbin. The hollow spindle comprises a false twister (not shown) for twisting the body of fancy yarn.

The back roller 41 and the 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 middle roller 61 and the back roller 41 constant and not more than 1.4.

the utility model provides a form one-level draft unit between well roller 61 and the back roller 41, preceding roller constitutes the second grade draft unit with well roller 61, and the well 41 velocity ratio of back roller of same passageway is invariable and be less than 1.4 to and the synchronous variable speed of preceding roller in this passageway relatively, the well, back roller 41 of different passageways roller variable speed in turn before relatively, realize the alternation draft to first component yarn. The first-level drafting is pre-drafting, the constant C is the first-level drafting ratio eh, the constant C is the constant drafting ratio eh of the first-level drafting is not more than 1.4, the continuity of the roving can be ensured, and no drafting singular point can 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 for slippage in the main drafting process is made, the end 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.

The first auxiliary channel also comprises a first leading-out roller R1 (a first unwinding shaft), and the first leading-out roller, the second front roller 72, the first twisting point and the second twisting point are arranged in sequence; the second auxiliary channel also comprises a second leading-out roller R2 (a second unwinding shaft), and the second leading-out roller, the third front roller 73, the first twisting point and the second twisting point are arranged in sequence.

the back roller, the middle roller and the front roller are respectively provided with a back leather-covered roller P4, a middle leather-covered roller P6 and a front leather-covered roller P7. An upper leather roller P6 is correspondingly arranged above the middle roller 61, the yarn forming device also comprises an upper leather collar Q1 which is sleeved on the upper leather roller and the upper pin and keeps synchronous movement with the middle roller 61, and a lower leather collar Q2 which is sleeved on the middle roller 61 and the lower pin and keeps synchronous movement with the middle roller 61; the distance between the holding jaw of the upper leather ring and the holding jaw of the lower leather ring and the front roller jaw line is less than 3 mm.

The secondary draft eq is a dynamic main draft, the speed of the middle roller 61 is varied relative to the front roller, when the blending ratio K of the first component yarn in the first channel is 0%, when the secondary draft ratio eq of the channel yarn is ∞, the channel yarn forms a draft singular point in the second draft zone, the distance delta between the draft singular point and the jaw of the front roller is less than or equal to 3mm (in the prior art, the gauge between the rear roller 41 and the middle roller 61 is generally greater than 25mm, the draft singular point position in the first draft zone is randomly distributed between the middle roller 41 and the rear roller 41, when the draft singular point distance exceeds 3mm from the jaw of the middle roller 61, the time for the draft singular point to be fed into the jaw of the middle roller 61 again has an uncertain factor, if the matching is not good, coarse details are generated, or the spinning is broken, so that the spinning becomes an unstable process, and the spinning reliability and the yarn quality are influenced). When K is gradually increased, the slivers held by the upper and lower leather rings are instantaneously fed into the jaw of the front roller to carry out secondary drafting along with the synchronous start of the rear roller 41 and the middle roller 61, so that the drafting singular points in the secondary drafting zone can not influence the stability of spinning.

the present embodiment further comprises a rear roller shaft 4, a middle roller shaft 6, a front roller shaft 7 and an auxiliary shaft 5; in the circumferential direction of the rear roller shaft 4, the rear roller 41 is movably sleeved on the rear roller shaft 4 (for example, by means of a bearing) in a relatively rotatable manner; in the circumferential direction of the middle roller shaft 6, the middle roller 61 can be movably sleeved on the middle roller shaft 6 in a relative rotation way; the first transmission gear set comprises a first driving gear 411, a first intermediate gear 51 and a first driven gear 611 which are in meshing transmission in sequence; the first driving gear is fixedly connected with the rear roller 41 in the same axle center, and the first driven gear is fixedly connected with the middle roller 61 in the same axle center; the first intermediate gear 51 is fitted relatively fixedly on the auxiliary shaft 5. Thus, the rear roller 41 and the middle roller 61 can be synchronously driven to run through the auxiliary shaft 5, and the feeding speed of the first component yarn can be adjusted.

In the circumferential direction of the front roller shaft 7, the first front roller 71 is relatively fixedly sleeved on the front roller shaft 7; the second front roller 72 and the third front roller 73 are rotatably fitted around the front roller shaft 7.

the front roller mechanism further comprises a second front shaft 8 and a third front shaft 11, wherein the second front shaft 8 is connected with the second front roller 72 through a second gear transmission pair; the third front shaft 11 is connected with the third front roller 73 through a third gear transmission pair; the second front roller and the third front roller can be driven to rotate through the second front shaft and the third front shaft respectively.

The second gear transmission pair comprises: a second main gear 82 and a second auxiliary gear 721 which are in meshing transmission with each other, wherein the second main gear is fixedly sleeved on the second front shaft 8, and the second auxiliary gear is fixedly connected with the second front roller 72 in a coaxial manner; the third gear transmission pair comprises: a third main gear 113 and a third pinion 731 which are meshed with each other for transmission, the third main gear is fixedly sleeved on the third front shaft 11, and the third pinion 731 is coaxially and fixedly connected with the third front roller 73.

Referring to fig. 4, the present embodiment further includes 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 the servo driver in sequence;

the servo motor includes: the first servo motor is used for driving the front roller shaft, the second servo motor is used for driving the second front shaft, the third servo motor is used for driving the auxiliary shaft to rotate, the fourth servo motor is used for driving the first extraction roller to rotate, the fifth servo motor is used for driving the first extraction roller to rotate, the sixth servo motor is used for driving the third front shaft, and the hollow spindle motor is used for driving the hollow spindle to rotate.

The utility model provides a controller loops through the feeding speed of four component yarns on four yarn passageways of servo driver and servo motor control, and the actual feeding speed of four component yarns of rotational speed sensor real-time supervision to feed back the monitoring value to the controller, the controller can be according to the size of control signal on four yarn passageways of monitoring value adjustment. The twisting mechanism comprises a ring plate, and the controller controls the ring plate to move through a servo driver and a servo motor. In addition, the control system also includes a series of instructions and modular programs.

The utility model provides a pair of adopt hollow spindle fancy yarn forming device of above-mentioned binary channels has two tunnel spinning passageways and two hollow spindle spinning systems of twisting point through the construction, accomplishes mutual twist and forms fancy yarn main part at first twisting point, carries out the cladding twist by the solid yarn of output and the fancy yarn main part that has taken shape at second twisting point, forms the fancy yarn that contains decorations yarn, core yarn and solid yarn, realizes the spinning of the hollow spindle fancy yarn of decorations yarn, heart yearn, solid one-step method.

Example 2

The embodiment also discloses a fancy yarn forming method adopting the double-channel hollow spindle fancy yarn forming device.

1. spinning of hollow spindle fancy yarn formed by one-step twisting of decorative yarn, core yarn and solid yarn

the utility model discloses a hollow spindle spinning device comprises the core yarn passageway of the draft passageway of roving and two way staple fiber yarn (or filament) and cladding yarn passageway all the way. The roving is subjected to alternating drafting to form untwisted strands with variable thickness, the untwisted strands are output by a drafting channel and are intersected with the yarns (or filaments) output by the other two core yarn channels at a first twisting point, and under the action of the twisting effect of the hollow spindle, the three strands are twisted alternately to form a fancy yarn main body; due to the effect of the hollow spindle twisting, the solid yarn (or filament) and the main body of the formed fancy yarn are subjected to cladding twisting at the second twisting point, so that the fancy yarn comprising the decoration yarn, the core yarn and the solid yarn is formed, and the spinning of the hollow spindle fancy yarn in one step of decoration yarn, core yarn and solid yarn is realized.

2. Fancy yarn with on-line changing wrapping structure

The speeds of the rear roller, the middle roller and the three front rollers are regulated and controlled on line, so that the fancy yarns of the single-twist coating structure, the fancy yarns of the alternate-twist coating structure and the fancy yarns of the winding-twisting coating structure can be respectively spun by cooperatively inputting the decorative yarns and the core yarns;

firstly, spinning fancy yarns with a cross-twisting wrapping structure:

The twisted yarn covering structure of an effect yarn is a structure of an effect yarn formed by twisting two untwisted strands (or yarns) at a constant speed at a first twisting point and covering the untwisted strands (or yarns) with a fixed yarn at a second twisting point.

The utility model discloses in the device, roller before roller, second and third before roller before first passageway (main entrance), first auxiliary passage and second auxiliary passage correspond respectively because roving Y1 is exported by roller before first after the main entrance reversal draft, and yarn X1 is through roller output before first auxiliary passage by the second, and yarn X2 is through roller output before the second auxiliary passage by the third. The roving Y1 is intermittent in output strand under the condition of alternating drafting, when the linear density of the strand output by the main channel is zero, two front rollers corresponding to the two auxiliary channels output two strands at a constant speed to be twisted at a first twisting point, and the two strands are wrapped by a fixed thread G1 output by the fixed thread channel at a second twisting point to form a cross-twisted and wrapped fancy yarn structure. For example, in this way, fancy yarns of a twisted covered structure of [ (X1+ X2) + G1] can be formed.

Secondly, the fancy yarn with the winding and twisting coating structure is spun:

The twisted and covered structure of the effect yarn is a structure of the effect yarn formed by twisting three or more untwisted strands (or yarns) at a first twist point at a non-constant speed and covering the untwisted strands (or yarns) with a solid yarn at a second twist point.

the utility model discloses in the device, first passageway and first auxiliary passage, the second auxiliary passage corresponds first preceding roller, roller and third preceding roller before the second, because roving Y is exported by first preceding roller after main entrance reversal draft, roller X1 before the second that X2 corresponds through first auxiliary passage and second auxiliary passage, roller is exported with the constant speed before the third, carry out non-constant speed twist and form and twine the twist structure at two yarns (or silk) of first twist point (X1+ X2) and an untwisted strand (roving Y), solid line G cladding formation that is exported by solid yarn passageway at second twist point twines the fancy yarn structure of twist cladding. In this way, a fancy yarn of a twist-and-twist covered structure of [ Y1+ (X1+ X2) + G1] can be formed.

3. Spinning of fancy yarn with on-line variation of shape

Setting the speeds of the first front roller, the second front roller and the third front roller as Vq1, Vq2 and Vq3 respectively, and regulating Vq1, Vq2 and/or Vq3 on line; the speed of the rear roller, the middle roller and the three front rollers can be adjusted and controlled on line, so that the online change of the combination modes of the decoration yarns and the core yarns, the online change of the combination modes of patterns such as knots, braids and loops, the online change of the sizes of the patterns such as the knots, the braids and the loops, the online change of the colors of the patterns such as the knots, the braids and the loops and the online change of the colors of the patterns such as the knots, the braids and the loops can be realized, and the combined fancy yarns with changeable appearance forms can.

(1) Fancy yarn spinning with online change of decoration yarn and core yarn combination mode

The first component yarn, the second component yarn and the third component yarn are respectively introduced into the interactive twisting triangular area through a first front roller, a second front roller and a third front roller, wherein the component yarn (strand) with the lowest speed of the front rollers is core yarn of fancy yarn, the component yarn with the higher speed of the front rollers is decoration yarn of the fancy yarn, and the online change of the combination mode of the decoration yarn and the core yarn in the fancy yarn is realized by adjusting the speeds of the first front roller, the second front roller and the third front roller on line.

The first component yarn (roving Y) is subjected to alternating drafting through a first channel and then is output by a first front roller at Vq1(t), and the second component yarn and the third component yarn (yarns X1 and X2) are output by a second front roller and a third front roller at the speed of Vq2(t) ═ Vq3 (t).

Generally, the strands with the lowest speed become core yarns of the effect yarns, and the strands with relatively higher speed become decoration yarns of the effect yarns. When Vq1(t) is minimum, X1 and X2 are core yarns, and Y is a decorative yarn; when Vq2(t) is the smallest, X1 is the core yarn and Y, X2 is the face yarn. Therefore, the online change of the combination mode of the decoration yarns and the core yarns can be realized by regulating Vq1(t), Vq2(t) and Vq3(t) through the PLC.

(2) spinning of fancy yarn with online change of knot, braid, loop and other pattern combinations

(3) spinning of double-loop fancy yarn

Spinning of double-braid fancy yarn

Vq1(t), Vq2(t), Vq3(t) (0.4-0.25) and 1:1, the second component yarn and the third component yarn are decoration yarns (decoration yarns X1, X2) and the first component yarn (core yarn Y) is a core yarn; the second component yarn and the third component yarn are strong twist yarns with the twist factor higher than 480, the second component yarn is alternately twisted and twisted on the first component yarn to form a first braid, and the third component yarn is alternately twisted and twisted on the first component yarn to form a second braid, so that the double-braid fancy yarn is formed;

If the thread density and the twist of the decorative threads X1 and X2 are equal, a symmetrical double-braid fancy thread is formed; if the linear densities of the decoration lines X1 and X2 are not equal and the twists are equal, or the linear densities of the decoration lines X1 and X2 are equal and the twists are not equal, or the linear densities of the decoration lines X1 and X2 are not equal and the twists are not equal, asymmetric double-braid fancy yarns are formed;

Weaving of fancy yarns with patterns of sizes changed on line such as knots, braids, loops and the like

the sizes of patterns such as knots, plaits, loops and the like of the fancy yarns depend on the thicknesses and twists of the decorative yarns and the core yarns and the overfeed speed of the decorative yarns relative to the core yarns. When forming knots, the fancy yarn with large decorative yarn coarse twist is larger than the fancy yarn with small decorative yarn fine twist; when the circles are formed, the fancy yarn with the large overfeed ratio of the thick twist of the decorative yarn is larger than the fancy yarn with the small overfeed ratio of the thin twist of the decorative yarn, and the circles formed by twisting are larger; when the plait is formed, the fancy yarn with the large overfeed ratio of the thick twist of the decorative yarn is longer than the fancy yarn with the small overfeed ratio of the thin twist of the decorative yarn.

Regulating size of yarn knot

When Vq1(t), Vq2(t) and Vq3(t) are (1.15-1.3) and 1:1, the first component yarn is a decoration yarn, and the second component yarn and the third component yarn are core yarns; the first component yarn (the decorative yarn Y1) is alternately twisted and twisted to form knots on the second component yarn and the third component yarn as the core yarn (X1+ X2)); the linear density of the decorative yarn is as follows:

② regulating and controlling size of fancy yarn ring

When Vq1(t), Vq2(t) and Vq3(t) are (1.3-4) to 1:1, the first component yarn is a decoration yarn, and the second component yarn and the third component yarn are core yarns; the first component yarn (the decorative yarn Y1) is alternately twisted and twisted to form loops on the second component yarn and the third component yarn as the core yarn (X1+ X2)); the linear density of the decorative yarn is as follows:

the speed Vh (t) of the rear roller is regulated and controlled by the PLC, the change of the linear density of the decoration yarns can be regulated and controlled, the linear density of the decoration yarns is increased when the feeding speed of the rear roller is increased, and the linear density of the decoration yarns is reduced when the feeding speed of the rear roller is reduced;

Regulating and controlling thickness of fancy yarn plait

3. spinning of fancy yarn with online change of coating ratio and linear density

Example 3

the structure of the present embodiment is substantially the same as that of embodiment 1, except that:

as shown in fig. 5, the control system further includes a first comparison module, the first comparison module is respectively connected to the third sensor, the fourth sensor, the fifth sensor and the controller, the first comparison module is used for monitoring a rotation speed ratio among the auxiliary shaft, the first drawing roller and the second drawing roller, and the controller regulates and controls the rotation speeds of the auxiliary shaft, the first drawing roller and the second drawing roller according to a value fed back by the first comparison module, so as to regulate and control a blending ratio of the first component yarn, the second component yarn and the third component yarn.

realize yarn blending ratio regulation and control for the accuracy fast, the utility model discloses direct numerical value according to first comparison module feedback is regulated and control, even lead to auxiliary shaft, first draw roller and second to draw the roller rotational speed and surpass respectively and set for error range because of various error reasons, as long as guarantee that the rotational speed ratio of first comparison module feedback is in setting for error range, can continue production and need not additionally adjust the actual rotational speed of well roller axle 6 and back roller axle 4. Compared with the prior art, need monitor a plurality of parameters simultaneously and compare, the utility model discloses only need monitor a parameter, relaxed the auxiliary shaft, first draw forth roller and second and draw forth the regulation and control precision of roller rotational speed, increased system control's redundancy, and outstanding the importance of roller rotational speed ratio on the different passageways, still improved the blending ratio control precision of yarn greatly when the work load greatly reduced that the controller handled, in addition, the shut down or the adjust time in having avoided the production process, the production efficiency of equipment improves more than 30%.

the comparison module may be a conventional comparator, an integrated comparison circuit, or a comparison module in software in the controller cpu. The sensor may be in many forms, such as a photoelectric encoder or a hall revolution sensor.

finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention.

Claims

1. The double-channel hollow spindle fancy yarn forming device is characterized by comprising a first channel for a first component yarn to pass through, a first auxiliary channel for a second component yarn to pass through, and a second auxiliary channel for a third component yarn to pass through;

2. The hollow fancy yarn forming device of claim 1, wherein the rear roller and the middle roller are connected through a first transmission gear set, and the first transmission gear set is used for keeping a traction ratio between the middle roller and the rear roller constant and not more than 1.4.

3. the hollow fancy yarn forming device of claim 1, wherein the first auxiliary channel further comprises a first draw-out roller, and the first draw-out roller, the second front roller, the first twisting point and the second twisting point are sequentially arranged;

And/or the second auxiliary channel further comprises a second leading-out roller, the third front roller, the first twisting point and the second twisting point are sequentially arranged.

4. The hollow fancy yarn forming device of claim 1, wherein an upper middle leather roller is correspondingly arranged above the middle roller, the yarn forming device further comprises an upper leather collar which is sleeved on the upper middle leather roller and the upper pin and keeps synchronous motion with the middle roller, and a lower leather collar which is sleeved on the middle roller and the lower pin and keeps synchronous motion with the middle roller; the distance between the holding jaw of the upper leather ring and the holding jaw of the lower leather ring and the front roller jaw line is less than 3 mm.

5. the hollow fancy yarn forming apparatus of claim 2, further comprising a rear roller shaft, a middle roller shaft and an auxiliary shaft;

In the circumferential direction of the rear roller shaft, the rear roller can be movably sleeved on the rear roller shaft in a relative rotation manner; in the circumferential direction of the middle roller shaft, the middle roller can be movably sleeved on the middle roller shaft in a relative rotation manner; the first transmission gear set comprises a first driving gear, a first intermediate gear and a first driven gear which are sequentially meshed for transmission; the first driving gear is fixedly connected with the rear roller in a coaxial manner, and the first driven gear is fixedly connected with the middle roller in a coaxial manner; the first intermediate gear is sleeved on the auxiliary shaft relatively and fixedly.

6. The hollow fancy yarn forming apparatus of claim 1, further comprising a front roller shaft; in the circumferential direction of the front roller shaft, the first front roller is sleeved on the front roller shaft relatively and fixedly; the second front roller and the third front roller can be sleeved on the front roller shaft in a relatively rotating manner.

7. the hollow fancy yarn forming device of claim 6, further comprising a second front shaft and a third front shaft, wherein the second front shaft is connected with the second front roller through a second gear transmission pair; the third front shaft is connected with the third front roller through a third gear transmission pair; the second front roller and the third front roller can be driven to rotate through the second front shaft and the third front shaft respectively.

8. The hollow-boule fancy yarn forming apparatus of claim 7, wherein the second gear transmission pair comprises: the second main gear and the second auxiliary gear are in meshed transmission with each other, 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 manner;