CN109722747A - Four roller double draft spinning apparatus of one kind and Yarn spinning method - Google Patents

Abstract

The invention discloses a kind of four roller double draft spinning apparatus and Yarn spinning methods, including rear bottom roll and rear upper glue roller, in after bottom roll and in after upper glue roller, in preceding bottom roll and in preceding upper glue roller, four roller systems of preceding bottom roll and preceding upper glue roller, preceding bottom roll is driven by first motor, and it is driven with rear bottom roll by gear set, in after, in preceding bottom roll by belt jointly by the second motor drive, when after, in after, in before, when preceding upper glue roller pushes simultaneously, the first draft area is formed between rear bottom roll in afterwards, in before form the second draft area between preceding bottom roll, in after in formation transition Distribution Area between preceding bottom roll；When it is rear, in after, preceding upper glue roller push simultaneously when, afterwards in after form the first draft area between bottom roll, in after form the second draft area between preceding bottom roll；When it is rear, in front of, preceding upper glue roller push simultaneously when, form the first draft area between preceding bottom roll in afterwards, in front of form the second draft area between preceding bottom roll.

Description

Four roller double draft spinning apparatus of one kind and Yarn spinning method

Technical field

The present invention relates to ring spinning new technical fields, particularly relate to a kind of four roller double drafts spinning dress It sets and Yarn spinning method.

Background technique

Drafting system is the important component of spinning frame work, and performance directly influences yarn quality.It is general at present Spinning frame be all made of three roller draft forms, including the double rubber ring structures of three common rollers and can realize 80 ~ 100 times big Three rollers, four rubber ring structure of drawing-off.The double rubber ring structures of three common rollers are divided into two draft areas: front draft zone and first break draft Area, and back zone is since only with simple roller draft, so that the friction field at middle part is weaker, drafting multiple is generally less than 1.4 times, This is unfavorable to the total drafting multiple for improving spinning frame, thus its total draft multiple is between 20 ~ 50.In order to solve back area draft The low problem of ability, Chinese patent " involving device for high-count worsted machine " (number: 96107383) with " four skin of spinning frame Circle draft mechanism " (number: individually discloses three roller three-aprons of one kind and three rollers, four apron draft machine in 012439010) Structure preferably resolves the weak problem of the back area draft ability of three roller form draft mechanisms, so that total draft multiple can be improved To 100.But since it uses three roller forms, namely only there are two continuous draft areas, therefore drafting multiple raising has Limit.

Summary of the invention

The purpose of the present invention provides four roller double draft spinning apparatus of one kind and Yarn spinning method, by using four column rollers The drafting system of two draft areas is formed, to realize between two draft areas when selecting four column upper glue rollers to push simultaneously The transition of yarn is arranged, drawing-off effect is improved, improves the drawing-off efficiency of the second draft area, when three column rubber rollers of selection push simultaneously When, it realizes the adjusting of the first draft area or the roller gauge in the second draft area, improves the adaptability to raw material of drafting system.

In order to achieve the above object, the present invention relates to a kind of four roller double draft spinning apparatus, including drafting system, institutes Stating drafting system includes rear roller pair, middle rear roller pair, middle front roller to, front roller pair, the rear roller pair lower sieve after including Draw and rear upper glue roller, the middle rear roller pair include in after bottom roll and in after upper glue roller, the middle front roller is to before in including Bottom roll and middle front and back upper glue roller, the front roller to including preceding bottom roll and preceding upper glue roller, it is described after bottom roll, in after lower sieve Draw, in preceding bottom roll, the structure of preceding bottom roll it is identical, it is described after bottom roll, in after bottom roll, in preceding bottom roll, preceding bottom roll Including roller shaft, the roller shaft be solid cylindrical structure, all spindle positions of the front truck table top of a spinning frame it is rear under The roller shaft integration of roller is fixedly connected, in all spindle positions after bottom roll roller shaft integration be fixedly connected, Suo Youding The roller shaft integration of preceding bottom roll, which is fixedly connected, in position, the roller shaft integration of the preceding bottom roll of all spindle positions is fixed connects It connects, the roller shaft integration of the rear bottom roll of all spindle positions of the rear car table top of a spinning frame is fixedly connected, all spindle positions In after bottom roll roller shaft integration be fixedly connected, in all spindle positions the roller shaft integration of preceding bottom roll be fixedly connected, The roller shaft integration of the preceding bottom roll of all spindle positions is fixedly connected, each spindle position rear bottom roll, in after bottom roll, in front of Bottom roll, preceding bottom roll roller shaft exterior circumference on fix it is fixed have a roller set, roller set is identical with the material of roller shaft And be irony or steel, roller set is integrated with roller shaft to be fixedly connected, front truck table top, rear car table top preceding bottom roll sieve The left end of pulling shaft is driven by first motor jointly and is rotated, front truck table top, rear car table top rear bottom roll roller shaft left end point Do not pass through the left end of identical front gear group and backgear group and front truck table top, the roller shaft of the preceding bottom roll of rear car table top It is sequentially connected, a left side for the roller shaft of bottom roll after the left end of the roller shaft of preceding bottom roll is in front truck table top, rear car table top End synchronizes rotation by the drive of the second motor by belt, rear upper glue roller, in afterwards upper glue roller, in preceding upper glue roller, preceding upper glue roller Including rubber roller, rubber roller is irony material, and rubber roller is solid cylindrical structure, the rear car table top of a spinning frame, preceding The adjacent spindle position of one, ride face spindle position and right side constitutes a spindle position group, on rear in two spindle positions of a spindle position group Rubber roller rubber roller integration connection, in after upper glue roller rubber roller integration connection, in preceding upper glue roller rubber roller integration Connection, the rubber roller integration of preceding upper glue roller connection, each spindle position rear upper glue roller, in after upper glue roller, in preceding upper glue roller, preceding The exterior circumference make-up of the rubber roller of upper glue roller is cased with rubber roller set, and rubber roller set is rubber material, and rubber roller set passes through bearing and rubber roller Axis connection, rubber roller set can be freely rotated around rubber roller, and keep one between the rubber roller set in two spindle positions of a spindle position group Fixed spacing, the rear upper glue roller of two spindle positions of a spindle position group, in after upper glue roller, in preceding upper glue roller, preceding upper glue roller rubber roller The rear insertion for being embedded in pressure-applying unit of rubber roller successively from back to front between set grabs, in after insertion grab, in preceding insertion grab, be preceding Insertion grab in, thus realize after upper glue roller, in after upper glue roller, in the installation of preceding upper glue roller, preceding upper glue roller on pressure-applying unit, add The rear portion of pressure component is fixed on the ride face of spinning frame by fixing axle, and pressure-applying unit can be rotated along fixing axle, To during rotation realize after upper glue roller, in after upper glue roller, in preceding upper glue roller, preceding upper glue roller under a certain pressure under Pressure.

In use, including the spinning of four rollers, four rubber roller double draft and the spinning of four rollers, three rubber roller double draft, for four Four rubber roller double draft of roller spinning, at this point, the rear upper glue roller of two spindle positions of a spindle position group, in after upper glue roller, in front of on Rubber roller, preceding upper glue roller rubber roller set between the rubber roller rear insertion for being embedded in pressure-applying unit successively from back to front grab, in after Insertion grab, in it is preceding insertion grab, it is preceding insertion grab in, thus realize after upper glue roller, in after upper glue roller, in preceding upper glue roller, preceding upper glue roller Installation on pressure-applying unit, pressure-applying unit are rotated along fixing axle under force, thus realize the pushing of pressure-applying unit, So that close face contact between the roller set of rear bottom roll and the rubber roller set of rear upper glue roller, in after bottom roll roller set Close face contact between the rubber roller set of upper glue roller after in and, in preceding bottom roll roller set and in the rubber roller of preceding upper glue roller cover it Between close face contact between close face contact, the roller set of preceding bottom roll and the rubber roller set of preceding upper glue roller, at this point, the first electricity The roller shaft rotation of bottom roll, then directly drives the preceding bottom roll of connection integrated with the roller shaft of preceding bottom roll before machine drives Roller cover and rotate synchronously, then drive that with the roller of preceding bottom roll to cover the rubber roller set of preceding upper glue roller of close face contact synchronous Rotation, the roller shaft of bottom roll rotates after the roller shaft of preceding bottom roll is driven by preceding connection gear or rear connection gear, then It directly drives the roller of the rear bottom roll of connection integrated with the roller shaft of rear bottom roll to cover to rotate synchronously, under then driving and being rear The roller of roller cover the rear upper glue roller of close face contact rubber roller set rotate synchronously, then at this time rear roller pair and front roller to it Between the total draft multiple that is formed be equal to the gear ratio of preceding connection gear or rear connection gear, the second motor is driven jointly by belt In preceding bottom roll roller shaft, in after bottom roll roller shaft rotation, then respectively directly drive and in preceding bottom roll roller The roller set of preceding bottom roll in axis integration connection, in after bottom roll afterwards in the integrated connection of the roller shaft of bottom roll Roller set rotates synchronously, and the roller of the preceding bottom roll in is then driven to cover the rubber roller of preceding upper glue roller in close face contact respectively Set, the rubber roller set that the roller of rear bottom roll covers rear upper glue roller in close face contact in rotate synchronously, at this point, in rear roller To the first draft area is formed between middle rear roller pair, the second draft area is formed between middle front roller pair and front roller pair, in after The transition Distribution Area without drawing-off, and the drafting multiple of the first draft area and the second drawing-off are formed between roller pair and middle front roller pair The product of the drafting multiple in area keeps constant and equal to the total draft multiple formed between rear roller pair and front roller pair, and due to Middle rear roller pair is identical as the revolving speed of middle front roller pair, so that transition Distribution Area does not have a drawing-off effect, that is, transition is whole The drafting multiple for managing area is 1, at this point, by the adjusting of the second motor output speeds to rear roller pair and middle front roller in realization Adjusting to revolving speed, so that the product in the drafting multiple of the drafting multiple and the second draft area of the first draft area is kept constant In the case of realize the synchronous adjustment of the drafting multiple of the first draft area and the drafting multiple of the second draft area, that is, realize The adjusting of the Pullin performances of one draft area and the second draft area, and the drafting multiple of the first draft area is set at this time much smaller than second The drafting multiple of draft area, when spinning, short fibre rove enters drafting system via feeding horn mouth, and the short fine rove of feeding is straight It connects and is pressed between rear bottom roll and rear upper glue roller by rear roller pair, and constantly exported under the rotation of rear roller pair drive, it is defeated Short fine rove after out then by bottom roll after in middle rear roller pair and in after press between upper glue roller, during which led by first The drawing-off effect in area is stretched, so that the short fine rove of feeding is stretched under the small drawing-off effect of the first draft area and attenuates to obtain First yarn, the first yarn middle rear roller pair rotation drive under constantly export, the first yarn after output then by before In roller pair preceding bottom roll and in press between preceding upper glue roller, during which the arrangement by transition Distribution Area acts on so that It stretches the fiber in the first yarn to attenuate and realizes that being transferred to complete stability by faint transition is distributed in the case where no drawing-off acts on Transformation so that generate stable internal friction field between fiber in the first yarn, to enter for the first yarn It is ready before carrying out high draft effect in two draft areas, rotation of first yarn in middle front roller pair of output is arranged through transition Lower constantly output, the first yarn after output is driven then to be pressed between the preceding bottom roll of front roller pair and preceding upper glue roller, the phase Between acted on by the drawing-off of the second draft area so that the first yarn is stretched change under the high draft effect of the second draft area The second yarn carefully is obtained, during this, the fiber in the first yarn is in stable internal friction field and preceding bottom roll and preceding gluing It realizes in front roller under the comprehensively control in the external friction field of force that roller forms the fiber generation rolling friction in the first yarn to rear The concentralized control in portion, and due in the first yarn at this time with the internal friction field of Stable distritation so that the second draft area Drafting multiple can effectively improve, then realize effectively mentioning for the total draft multiple formed between rear roller pair and front roller pair It is high；It spins for four rollers, three rubber roller double draft, including rear three rubber roller double drafts spinning and four rollers one in four rollers one In the spinning of first three rubber roller double draft, for three rubber roller double drafts spinning after in four rollers one, at this point, the two of a spindle position group The rear upper glue roller of a spindle position, in after upper glue roller, preceding upper glue roller rubber roller set between rubber roller successively being embedded in from back to front The rear insertion of pressure-applying unit grabs, in after in insertion is grabbed, preceding insertion is grabbed, thus upper glue roller after realizing, in after upper glue roller, preceding upper glue roller Installation on pressure-applying unit, pressure-applying unit are rotated along fixing axle under force, thus realize the pushing of pressure-applying unit, So that close face contact between the roller set of rear bottom roll and the rubber roller set of rear upper glue roller, in after bottom roll roller set It is tight between close face contact, the roller set of preceding bottom roll and the rubber roller set of preceding upper glue roller between the rubber roller set of upper glue roller after in and Close face contact, in it is hanging above preceding bottom roll, at this point, first motor drive before bottom roll roller shaft rotation, then directly It drives the roller of the preceding bottom roll of connection integrated with the roller shaft of preceding bottom roll to cover to rotate synchronously, then drive and preceding bottom roll The rubber roller set of the roller preceding upper glue roller that covers close face contact rotate synchronously, the roller shaft of preceding bottom roll passes through preceding connection gear Or the roller shaft of bottom roll rotates after rear connection gear drive, then directly drives connection integrated with the roller shaft of rear bottom roll The roller of rear bottom roll cover and rotate synchronously, then drive the rear upper glue roller that close face contact is covered with the roller of rear bottom roll Rubber roller set rotate synchronously, then the total draft multiple formed between rear roller pair and front roller pair at this time be equal to preceding connection gear or after The gear ratio of connection gear, the second motor by belt drives jointly in preceding bottom roll roller shaft, in afterwards bottom roll roller Axis rotation, then respectively directly drive in the roller shaft of preceding bottom roll it is integrated connect in preceding bottom roll roller set, and In after bottom roll roller shaft integration connection in after bottom roll roller cover rotate synchronously, then drive in after bottom roll Roller cover in close face contact after the rubber roller set of upper glue roller rotate synchronously, at this point, in rear roller pair and middle rear roller pair Between form the first draft area, the second draft area, and the drawing-off of the first draft area are formed between middle rear roller pair and front roller pair The product of multiple and the drafting multiple of the second draft area keep constant and be equal to formed between rear roller pair and front roller pair it is total Drafting multiple, then at this point, the roller gauge in the second draft area increases compared with when the spinning of four rollers, four rubber roller double draft, To realize the adjusting between the roller gauge in the second draft area, at this point, by the adjustings of the second motor output speeds to The adjusting of rear roller pair revolving speed in realization, so that the drafting multiple in the drafting multiple and the second draft area of the first draft area multiplies Product realizes the synchronous adjustment of the drafting multiple of the first draft area and the drafting multiple of the second draft area in the case where keeping constant, The adjusting of the Pullin performances of the first draft area and the second draft area is exactly realized, and the drawing-off times of the first draft area is set at this time Number is much smaller than the drafting multiple of the second draft area, and when spinning, short fibre rove enters drafting system via feeding horn mouth, feeds Short fine rove directly pressed between the rear bottom roll of rear roller pair and rear upper glue roller, and under the rotation of rear roller pair drive Constantly output, short fine rove after output then by bottom roll after in middle rear roller pair and in after press between upper glue roller, the phase Between acted on by the drawing-off of the first draft area so that the short fine rove of feeding quilt under the small drawing-off effect of the first draft area Stretching attenuates to obtain third yarn, and third yarn is constantly exported in the case where the rotation of middle rear roller pair drives, the third palpus after output Item is then pressed between the preceding bottom roll of front roller pair and preceding upper glue roller, and during which the drawing-off by the second draft area acts on, from And third yarn is made to be stretched under the high draft effect of the second draft area and attenuate to obtain the 4th yarn, and during this, first Fiber in yarn keeps preceding bottom roll in synchronous rotational speed before by front roller to by pressure and speed, by bottom roll rear in Surface is acted on without the rolling friction under pressing active force, to provide one to the fiber in the first yarn in the second draft area A additional external friction field of force, thus realize the more stable outer control action to the fiber in the first yarn, so that the Fiber in one yarn generates rolling to the fiber in the first yarn in the additional external friction field of force and preceding bottom roll and preceding upper glue roller It realizes in front roller under the comprehensively control in the external friction field of force formed that rubs to the concentralized control at rear portion, so that the second drawing-off The drafting multiple in area can effectively improve, and then realize effectively mentioning for the total draft multiple formed between rear roller pair and front roller pair It is high；Spin for first three rubber roller double draft in four rollers one, at this point, the rear upper glue roller of two spindle positions of a spindle position group, in Preceding upper glue roller, preceding upper glue roller rubber roller set between the rubber roller rear insertion for being embedded in pressure-applying unit successively from back to front grab, In it is preceding insertion grab, it is preceding insertion grab in, thus realize after upper glue roller, in the installation of preceding upper glue roller, preceding upper glue roller on pressure-applying unit, Pressure-applying unit is rotated along fixing axle under force, thus realize the pushing of pressure-applying unit, so that rear bottom roll Roller cover between the rubber roller of rear upper glue roller set close face contact, in preceding bottom roll roller set and in preceding upper glue roller rubber roller Close face contact between close face contact between set, the roller set of preceding bottom roll and the rubber roller set of preceding upper glue roller, in it is front lower It is hanging above roller, at this point, first motor drives the roller shaft rotation of preceding bottom roll, then directly drive sieve with preceding bottom roll The roller of the preceding bottom roll of pulling shaft integration connection, which covers, to be rotated synchronously, and is then driven and is connect with the close pressing of the roller of preceding bottom roll set The rubber roller of the preceding upper glue roller of touching, which covers, to be rotated synchronously, after the roller shaft of preceding bottom roll is driven by preceding connection gear or rear connection gear The roller shaft of bottom roll rotates, and then directly drives the roller set of the rear bottom roll of connection integrated with the roller shaft of rear bottom roll It rotates synchronously, then drives the rubber roller set for the rear upper glue roller for covering close face contact with the roller of rear bottom roll to rotate synchronously, then The total draft multiple formed between rear roller pair and front roller pair at this time is equal to the gear ratio of preceding connection gear or rear connection gear, Second motor by belt drives jointly in preceding bottom roll roller shaft, in after bottom roll roller shaft rotation, then respectively directly Tape splicing move the roller shaft of bottom roll preceding in it is integrated connection in preceding bottom roll roller set, in afterwards bottom roll roller shaft The roller of bottom roll, which covers, after in integration connection rotates synchronously, and the close pressing of roller set of the preceding bottom roll in is then driven to connect The rubber roller of preceding upper glue roller, which covers, in touching rotates synchronously, at this point, the first draft area is formed between rear roller pair and middle front roller pair, Form the second draft area between middle front roller pair and front roller pair, and the drafting multiple of the first draft area and the second draft area are led The product for stretching multiple keeps constant and is equal to the total draft multiple formed between rear roller pair and front roller pair, then at this point, with four Four rubber roller double draft of roller is compared when spinning, and the roller gauge in the first draft area increases, to realize in the first draft area Roller gauge between adjusting, at this point, by the second motor output speeds adjusting to realize in front roller to revolving speed It adjusts, thus real in the case where the product of the drafting multiple of the drafting multiple of the first draft area and the second draft area is kept constant The synchronous adjustment of the drafting multiple of the drafting multiple and the second draft area of existing first draft area, that is, realize the first draft area With the adjusting of the Pullin performances of the second draft area, when spinning, short fibre rove enters drafting system via feeding horn mouth, feeds Short fine rove directly pressed between the rear bottom roll of rear roller pair and rear upper glue roller, and under the rotation of rear roller pair drive Constantly output, short fine rove after output then by preceding bottom roll in middle front roller pair and in press between preceding upper glue roller, the phase Between acted on by the drawing-off of the first draft area so that the short fine rove of feeding quilt under the small drawing-off effect of the first draft area Stretching attenuates to obtain the 5th yarn, during this, the fiber in short fibre rove before by middle front roller to by pressure and speed, by After preceding bottom roll is kept in synchronous rotational speed in bottom roll surface without the rolling friction effect under pressing active force, thus An additional external friction field of force is provided to the fiber in short fine rove in first draft area, to realize to the fibre in short fine rove Dimension more stable outer control action so that it is short fibre rove in fiber the additional external friction field of force in preceding bottom roll It realizes and exists under the comprehensively control in the external friction field of force that preceding upper glue roller generates rolling friction formation to the fiber in short fine rove in Middle front roller is to the concentralized control at rear portion, so that the drafting multiple of the first draft area can effectively improve, sieve after then realizing Effectively improving to the total draft multiple formed between front roller pair is drawn, the 5th yarn is in the case where the rotation of middle front roller pair drives Constantly output, the 5th yarn after output then pressed between the preceding bottom roll of front roller pair and preceding upper glue roller, during which by The drawing-off of second draft area acts on, and attenuates to obtain so that the 5th yarn is stretched under the high draft effect of the second draft area 6th yarn；The yarn obtained after drawing-off is being constantly twisted resultant yarn under the action of twisting the twist after drafting system exports And on spool.

The present invention forms the drafting system of two draft areas by using four column rollers, thus when four column upper glue rollers of selection are same When pushing, realize that the transition to yarn arranges between two draft areas, so as to improve drawing-off effect, improve the second draft area Drawing-off efficiency realize the first draft area or the roller gauge in the second draft area when selecting three column rubber rollers to push simultaneously It adjusts, so as to improve the adaptability to raw material of drafting system.

Detailed description of the invention

Fig. 1 is four roller double draft spinning apparatus structural schematic diagrams of the invention.

Specific embodiment

As shown in Figure 1, a kind of four roller double draft spinning apparatus, including drafting system, drafting system include rear roller To, middle rear roller pair, middle front roller to, front roller pair, rear roller pair includes rear bottom roll 1 and rear upper glue roller 2, middle rear roller pair Upper glue roller 4 after bottom roll 3 is in after including in, middle front roller is to bottom roll 5 preceding in including and middle front and back upper glue roller 6, front roller To including preceding bottom roll 7 and preceding upper glue roller 8, rear bottom roll, in after bottom roll, in preceding bottom roll, the structure of preceding bottom roll it is identical, Afterwards bottom roll, in after bottom roll, in preceding bottom roll, preceding bottom roll include roller shaft 9, roller shaft is solid cylindrical structure, The roller shaft integration of the rear bottom roll of all spindle positions of the front truck table top of one spinning frame is fixedly connected, in all spindle positions after The roller shaft integration of bottom roll is fixedly connected, the roller shaft integration of preceding bottom roll is fixedly connected, owns in all spindle positions The roller shaft integration of the preceding bottom roll of spindle position is fixedly connected, all spindle positions of spinning frame, that is, spinning apparatus rear car table top Rear bottom roll roller shaft integration be fixedly connected, in all spindle positions after bottom roll roller shaft integration be fixedly connected, In all spindle positions the roller shaft integration of preceding bottom roll be fixedly connected, the roller shaft integrated solid of the preceding bottom roll of all spindle positions Fixed connection, each spindle position rear bottom roll, in after bottom roll, in preceding bottom roll, preceding bottom roll roller shaft exterior circumference Upper fixation is fixed to have roller to cover 10, and roller set is identical with the material of roller shaft and is irony or steel, and roller covers and roller shaft Integration is fixedly connected, front truck table top, rear car table top the left end of roller shaft of preceding bottom roll driven jointly by first motor 16 Rotation, front truck table top, rear car table top the left end of roller shaft of rear bottom roll pass through identical 15 and of front gear group respectively Backgear group and the left end of front truck table top, the roller shaft of the preceding bottom roll of rear car table top are sequentially connected, front truck table top, rear car table top In preceding bottom roll roller shaft left end in after bottom roll roller shaft left end by belt 13 by 14 band of the second motor It is dynamic to synchronize rotation, rear upper glue roller, in afterwards upper glue roller, in preceding upper glue roller, preceding upper glue roller include rubber roller 11, rubber roller is iron Material matter, rubber roller are solid cylindrical structure, one spindle position of rear car table top, front truck table top and right side phase of a spinning frame An adjacent spindle position constitutes a spindle position group, and the rubber roller integration of the rear upper glue roller in two spindle positions of a spindle position group connects Connect, in after upper glue roller rubber roller integration connection, in preceding upper glue roller rubber roller integration connection, preceding upper glue roller rubber roller Integration connection, each spindle position rear upper glue roller, in after upper glue roller, in preceding upper glue roller, preceding upper glue roller rubber roller outside Circumference make-up is cased with rubber roller set 12, and rubber roller set is rubber material, and for rubber roller set by bearing and rubber roller axis connection, rubber roller set can be around Rubber roller is freely rotated, and keeps certain spacing, a spindle position group between the rubber roller set in two spindle positions of a spindle position group Two spindle positions rear upper glue roller, in after upper glue roller, in preceding upper glue roller, preceding upper glue roller rubber roller set between rubber roller successively from Afterwards the rear insertion for being embedded in pressure-applying unit forward grab, in after insertion grab, in it is preceding insertion grab, it is preceding insertion grab in, thus realize after Upper glue roller, in after upper glue roller, in the installation of preceding upper glue roller, preceding upper glue roller on pressure-applying unit, the rear portion of pressure-applying unit passes through solid Dead axle is fixed on the ride face of spinning frame, and pressure-applying unit can be rotated along fixing axle, thus real during rotation Now after upper glue roller, in after upper glue roller, in preceding upper glue roller, preceding upper glue roller pushing under a certain pressure.

In use, including the spinning of four rollers, four rubber roller double draft and the spinning of four rollers, three rubber roller double draft, wherein four The spinning of three rubber roller double draft of roller is again including first three glue in three rubber roller double drafts spinning rear in four rollers one and four rollers one The spinning of roller double draft.

For four rollers, four rubber roller double draft spin, at this point, the rear upper glue roller 2 of two spindle positions of a spindle position group, in Afterwards upper glue roller 4, in preceding upper glue roller 6, preceding upper glue roller 8 rubber roller set between rubber roller successively from back to front be embedded in pressurization group The rear insertion of part grabs, in after insertion grab, in preceding insertion is grabbed, preceding insertion is grabbed, thus upper glue roller after realizing, in after upper glue roller, in The installation of preceding upper glue roller, preceding upper glue roller on pressure-applying unit, pressure-applying unit are rotated along fixing axle under force, thus real The pushing of existing pressure-applying unit, so that closely by crimping between the roller set of rear bottom roll 1 and the rubber roller set of rear upper glue roller 2 Touching, in after bottom roll 3 roller set and in after upper glue roller 4 rubber roller set between close face contact, in preceding bottom roll 5 roller Set and in preceding upper glue roller 6 rubber roller set between close face contact, preceding bottom roll 7 roller set and preceding upper glue roller 8 rubber roller set Between close face contact, at this point, first motor 16 drive before bottom roll roller shaft rotation, then directly drive and front lower sieve The roller of the preceding bottom roll of the roller shaft integration connection of drawing, which covers, to be rotated synchronously, and is then driven close with the roller of preceding bottom roll set The rubber roller of the preceding upper glue roller of face contact, which covers, to be rotated synchronously, and the roller shaft of preceding bottom roll passes through preceding connection gear 15 or rear tooth connection The roller shaft rotation of bottom roll, then directly drives the rear bottom roll of connection integrated with the roller shaft of rear bottom roll after wheel drives Roller cover and rotate synchronously, then drive that with the roller of rear bottom roll to cover the rubber roller set of rear upper glue roller of close face contact synchronous Rotation, the then total draft multiple formed between rear roller pair and front roller pair at this time are equal to preceding connection gear or rear connection gear Gear ratio, the second motor 14 by belt 13 jointly drive in preceding bottom roll roller shaft, in after bottom roll roller shaft rotation, Then directly drive respectively the roller set of preceding bottom roll in the integrated connection of in the roller shaft of preceding bottom roll, it is rear under sieve The roller of bottom roll, which covers, after in the roller shaft integration connection of drawing rotates synchronously, and then drives sieve of the preceding bottom roll in respectively The rubber roller set of preceding upper glue roller in close face contact of helping pull a cart, in after bottom roll roller cover in close face contact after on The rubber roller of rubber roller, which covers, to be rotated synchronously, at this point, forming the first draft area, middle front roller pair between rear roller pair and middle rear roller pair The second draft area is formed between front roller pair, is formed the transition without drawing-off between middle rear roller pair and middle front roller pair and is arranged Area, and the product of the drafting multiple of the first draft area and the drafting multiple of the second draft area keep constant and be equal to rear roller pair and The total draft multiple formed between front roller pair, and since middle rear roller pair is identical as the revolving speed of middle front roller pair, so that Transition Distribution Area does not have drawing-off effect, that is, the drafting multiple of transition Distribution Area is 1, at this point, being turned by the output of the second motor The adjusting of speed to rear roller pair and adjusting of the middle front roller to revolving speed in realizing, thus the first draft area drafting multiple and The product of the drafting multiple of second draft area realizes drafting multiple and the second drawing-off of the first draft area in the case where keeping constant The synchronous adjustment of the drafting multiple in area, that is, the adjusting of the Pullin performances of the first draft area and the second draft area is realized, and The drafting multiple that the first draft area is arranged at this time is much smaller than the drafting multiple of the second draft area, and when spinning, short fibre rove is via feeding Enter horn mouth and enter drafting system, the short fine rove of feeding is directly pressed between the rear bottom roll of rear roller pair and rear upper glue roller Pressure, and constantly exporting under the rotation of rear roller pair drive, the short fine rove after output is then by under after in middle rear roller pair Roller and in after press between upper glue roller, during which the drawing-off by the first draft area acts on, so that the short fine rove of feeding It is stretched under the small drawing-off effect of the first draft area and attenuates to obtain the first yarn, rotation band of first yarn in middle rear roller pair Dynamic lower constantly output, the first yarn after output then by preceding bottom roll in middle front roller pair and in press between preceding upper glue roller Pressure, during which the arrangement by transition Distribution Area acts on, so that the fiber stretched in the first yarn to attenuate is led in nothing The effect of stretching is lower to realize the transformation that complete stability distribution is transferred to by faint transition, so that producing between the fiber in the first yarn Raw stable internal friction field is ready before progress high draft effect to enter in the second draft area for the first yarn, is passed through Transition arrange output the first yarn middle front roller pair rotation drive under constantly export, the first yarn after output then by It is pressed between the preceding bottom roll and preceding upper glue roller of front roller pair, during which the drawing-off by the second draft area acts on, so that the One yarn is stretched under the high draft effect of the second draft area and attenuates to obtain the second yarn, during this, in the first yarn Fiber generates rolling friction to the fiber in the first yarn in stable internal friction field and preceding bottom roll and preceding upper glue roller and is formed The external friction field of force comprehensively control under realize in front roller to the concentralized control at rear portion, and due to having in the first yarn at this time Rear roller pair is then realized so that the drafting multiple of the second draft area can effectively improve in the internal friction field of Stable distritation The total draft multiple formed between front roller pair effectively improves.

For three rubber roller double drafts spinning rear in four rollers one, at this point, the rear gluing of two spindle positions of a spindle position group Roller 2, in after upper glue roller 4, preceding upper glue roller 8 rubber roller set between rubber roller successively from back to front be embedded in pressure-applying unit after Insertion grab, in after insertion grab, it is preceding insertion grab in, thus realize after upper glue roller, in after upper glue roller, preceding upper glue roller on pressure-applying unit Installation, pressure-applying unit is rotated along fixing axle under force, to realize the pushing of pressure-applying unit, so that under rear The roller of roller 1 cover between the rubber roller of rear upper glue roller 2 set close face contact, in after bottom roll 3 roller set and in after on It is closely pressed between close face contact, the roller set of preceding bottom roll 7 and the rubber roller set of preceding upper glue roller 8 between the rubber roller set of rubber roller 4 Press contacts, in it is hanging above preceding bottom roll, at this point, first motor 16 drive before bottom roll roller shaft rotation, then direct band The roller of the preceding bottom roll of dynamic connection integrated with the roller shaft of preceding bottom roll, which covers, to be rotated synchronously, and is then driven and preceding bottom roll The rubber roller set that roller covers the preceding upper glue roller of close face contact rotates synchronously, and the roller shaft of preceding bottom roll passes through preceding connection gear 15 Or the roller shaft of bottom roll rotates after rear connection gear drive, then directly drives connection integrated with the roller shaft of rear bottom roll The roller of rear bottom roll cover and rotate synchronously, then drive the rear upper glue roller that close face contact is covered with the roller of rear bottom roll Rubber roller set rotate synchronously, then the total draft multiple formed between rear roller pair and front roller pair at this time be equal to preceding connection gear or after The gear ratio of connection gear, second motor 14 driven jointly by belt 13 in preceding bottom roll roller shaft, in after bottom roll Roller shaft rotation, then respectively directly drive in the roller shaft of preceding bottom roll it is integrated connect in preceding bottom roll roller Set, in after the roller shaft of bottom roll it is integrated connection in after bottom roll roller cover rotate synchronously, then drive and in after The rubber roller set of upper glue roller rotates synchronously after the roller of bottom roll covers in close face contact, at this point, after rear roller pair is in The first draft area is formed between roller pair, and the second draft area, and the first draft area are formed between middle rear roller pair and front roller pair Drafting multiple and the product of drafting multiple of the second draft area keep constant and be equal to shape between rear roller pair and front roller pair At total draft multiple, then at this point, compared with when the spinning of four rollers, four rubber roller double draft, roller gauge in the second draft area Increase, so that the adjusting between the roller gauge in the second draft area is realized, at this point, passing through the adjusting of the second motor output speeds To the adjusting of rear roller pair revolving speed in realization, thus in the drafting multiple of the first draft area and the drafting multiple of the second draft area Product keep constant in the case where realize the same step of the drafting multiple of the first draft area and the drafting multiple of the second draft area Section, that is, realize the adjusting of the Pullin performances of the first draft area and the second draft area, and the first draft area is set at this time Drafting multiple is much smaller than the drafting multiple of the second draft area, and when spinning, short fibre rove enters drawing-off system via feeding horn mouth The short fine rove of system, feeding is directly pressed between the rear bottom roll of rear roller pair and rear upper glue roller, and is turned in rear roller pair It is dynamic to drive lower constantly output, short fine rove after output then by bottom roll after in middle rear roller pair and in after between upper glue roller Pressing, during which the drawing-off by the first draft area acts on, so that small drawing-off of the short fine rove of feeding in the first draft area It is stretched under effect and attenuates to obtain third yarn, third yarn is constantly exported in the case where the rotation of middle rear roller pair drives, after output Third yarn then pressed between the preceding bottom roll of front roller pair and preceding upper glue roller, the during which drawing-off by the second draft area Effect, so that third yarn is stretched under the high draft effect of the second draft area attenuates to obtain the 4th yarn, this process In, the fiber in third yarn is kept in synchronous rotational speed before by front roller to by pressure and speed by bottom roll rear in Front lower surface of roller is acted on without the rolling friction under pressing active force, thus to the fibre in third yarn in the second draft area Dimension provides an additional external friction field of force, thus realize the more stable outer control action to the fiber in third yarn, from And make the fiber in third yarn in the additional external friction field of force and preceding bottom roll and preceding upper glue roller to the fiber in third yarn It generates and is realized in front roller under the comprehensively control in the external friction field of force that rolling friction is formed to the concentralized control at rear portion, so that The drafting multiple of second draft area can effectively improve, and then realize the total draft multiple formed between rear roller pair and front roller pair Effectively improve；

It spins for first three rubber roller double draft in four rollers one, at this point, the rear upper glue roller 2 of two spindle positions of a spindle position group, In preceding upper glue roller 6, preceding upper glue roller 8 rubber roller set between the rubber roller rear insertion for being embedded in pressure-applying unit successively from back to front Grab, in it is preceding insertion grab, it is preceding insertion grab in, thus realize after upper glue roller, in the peace of preceding upper glue roller, preceding upper glue roller on pressure-applying unit Dress, pressure-applying unit is rotated along fixing axle under force, so that the pushing of pressure-applying unit is realized, so that rear bottom roll Close face contact between 1 roller set and the rubber roller of rear upper glue roller 2 set, in preceding bottom roll 5 roller set and in preceding upper glue roller 6 Rubber roller set between close face contact, the roller set of preceding bottom roll 7 and the rubber roller set of preceding upper glue roller 8 closely by crimping Touching, in it is hanging above preceding bottom roll, at this point, first motor 16 drive before bottom roll roller shaft rotation, then directly drive and The roller of the preceding bottom roll of the roller shaft integration connection of preceding bottom roll, which covers, to be rotated synchronously, and the roller with preceding bottom roll is then driven The rubber roller set for covering the preceding upper glue roller of close face contact rotates synchronously, the roller shaft of preceding bottom roll by preceding connection gear 15 or after The roller shaft rotation of bottom roll after connection gear drives, after then directly driving connection integrated with the roller shaft of rear bottom roll The roller of bottom roll, which covers, to be rotated synchronously, and the rubber roller that the rear upper glue roller of close face contact is covered with the roller of rear bottom roll is then driven Set rotates synchronously, then the total draft multiple formed between rear roller pair and front roller pair at this time is equal to preceding connection gear or rear connection The gear ratio of gear, the second motor 14 by belt 13 jointly drive in preceding bottom roll roller shaft, in after bottom roll roller Axis rotation, then respectively directly drive in the roller shaft of preceding bottom roll it is integrated connect in preceding bottom roll roller set, and In after bottom roll roller shaft integration connection in after bottom roll roller cover rotate synchronously, then drive in preceding bottom roll Roller cover preceding upper glue roller in close face contact rubber roller set rotate synchronously, at this point, in rear roller pair and middle front roller pair Between form the first draft area, the second draft area, and the drawing-off of the first draft area are formed between middle front roller pair and front roller pair The product of multiple and the drafting multiple of the second draft area keep constant and be equal to formed between rear roller pair and front roller pair it is total Drafting multiple, then at this point, the roller gauge in the first draft area increases compared with when the spinning of four rollers, four rubber roller double draft, To realize the adjusting between the roller gauge in the first draft area, at this point, by the adjustings of the second motor output speeds to Adjusting of the front roller to revolving speed in realization, so that the drafting multiple in the drafting multiple and the second draft area of the first draft area multiplies Product realizes the synchronous adjustment of the drafting multiple of the first draft area and the drafting multiple of the second draft area in the case where keeping constant, Exactly realize the adjusting of the Pullin performances of the first draft area and the second draft area, when spinning, short fibre rove is via feeding loudspeaker Mouth enters drafting system, and the short fine rove of feeding is directly pressed between the rear bottom roll of rear roller pair and rear upper glue roller, and Constantly exported in the case where the rotation of rear roller pair drives, the short fine rove after output then by preceding bottom roll in middle front roller pair and In press between preceding upper glue roller, during which the drawing-off by the first draft area acts on, so that the short fine rove of feeding is first It is stretched under the small drawing-off effect of draft area and attenuates to obtain the 5th yarn, during this, the fiber in short fibre rove is before by Roller is to by before pressure and speed, bottom roll surface without pressing active force after being kept in synchronous rotational speed by bottom roll preceding in Under rolling friction effect, to provide an additional external friction field of force to the fiber in short fine rove in the first draft area, To realize the more stable outer control action to the fiber in short fine rove, so that the fiber in short fibre rove is attached The external friction field of force preceding bottom roll preceding upper glue roller in in is added to generate outer the rubbing of rolling friction formation to the fiber in short fine rove It wipes and realizes in middle front roller under the comprehensively control in the field of force to the concentralized control at rear portion, so that the drafting multiple of the first draft area It can effectively improve, then realize effectively improving for the total draft multiple formed between rear roller pair and front roller pair, the 5th yarn It is constantly exported in the case where the rotation of middle front roller pair drives, the 5th yarn after output is then by the preceding bottom roll of front roller pair with before It is pressed between upper glue roller, during which the drawing-off by the second draft area acts on, so that the 5th yarn is in the big of the second draft area It is stretched under drawing-off effect and attenuates to obtain the 6th yarn；The yarn obtained after drawing-off is twisting the twist after drafting system exports Under the action of be constantly twisted resultant yarn and on spool.

Claims (9)

1. a kind of four roller double draft spinning apparatus, it is characterised in that: rear sieve formed including rear bottom roll and rear upper glue roller Draw to, in after bottom roll and in after upper glue roller composition middle rear roller pair, in preceding bottom roll and in preceding upper glue roller composition before Four roller systems and first motor of the roller to the front roller pair of, preceding bottom roll and preceding upper glue roller composition, the second electricity The drafting transmission system of machine, gear set and belt composition；Preceding bottom roll is driven by first motor, and passes through gear with rear bottom roll Group transmission, in after bottom roll, in preceding bottom roll by belt jointly by the second motor drive；When after upper glue roller, in after upper glue roller, In preceding upper glue roller, preceding upper glue roller simultaneously when pushing, four rollers, four rubber roller double draft spinning unit is formed, after rear bottom roll is in The first draft area is formed between bottom roll, in the second draft area is formed between preceding bottom roll and preceding bottom roll, in after bottom roll with In transition Distribution Area is formed between preceding bottom roll；When rear upper glue roller, in after upper glue roller, preceding upper glue roller simultaneously push when, formed four Three rubber roller double draft spinning units after in roller one, rear bottom roll and in after form the first draft area between bottom roll, in after The second draft area is formed between bottom roll and preceding bottom roll；When rear upper glue roller, in preceding upper glue roller, preceding upper glue roller simultaneously push when, Form first three rubber roller double draft spinning unit in four rollers one, rear bottom roll and in form the first drawing-off between preceding bottom roll Area, in the second draft area is formed between preceding bottom roll and preceding bottom roll.

2. a kind of four rollers double draft spinning apparatus according to claim 1, it is characterised in that: rear lower sieve Draw, in after bottom roll, in preceding bottom roll, the structure of preceding bottom roll it is identical, rear bottom roll, in after bottom roll, in preceding bottom roll, preceding Bottom roll includes roller shaft, the rear bottom roll of all spindle positions of the front truck table top of spinning apparatus, in after bottom roll, in front lower sieve It draws, integration is fixedly connected the roller shaft of preceding bottom roll respectively, rear lower sieve of all spindle positions of the rear car table top of a spinning frame Draw, in after bottom roll, in preceding bottom roll, preceding bottom roll roller shaft integration is fixedly connected respectively, each spindle position it is rear under Roller, in after bottom roll, in preceding bottom roll, preceding bottom roll roller shaft exterior circumference on fix it is fixed have and roller shaft one Change the roller set being fixedly connected；Front truck table top, rear car table top preceding bottom roll roller shaft left end jointly by first motor band Turn is dynamic, front truck table top, rear car table top rear bottom roll roller shaft left end respectively by identical front gear group and Backgear group and the left end of front truck table top, the roller shaft of the preceding bottom roll of rear car table top are sequentially connected, front truck table top, rear car table top In preceding bottom roll roller shaft left end in after bottom roll roller shaft left end by belt by the second motor drive into Row rotates synchronously；Upper glue roller after described, in after upper glue roller, in preceding upper glue roller, preceding upper glue roller include rubber roller, after spinning apparatus Ride face, the adjacent spindle position of one spindle position of front truck table top and right side constitute a spindle position group, two ingots of a spindle position group Rear upper glue roller on position, in after upper glue roller, in preceding upper glue roller, preceding upper glue roller rubber roller integration connection respectively, in each ingot Position rear upper glue roller, in after upper glue roller, in preceding upper glue roller, preceding upper glue roller rubber roller exterior circumference make-up be cased with rubber material Matter can keep certain around the rubber roller set that rubber roller is freely rotated, and between the rubber roller set in two spindle positions of a spindle position group Spacing.

3. a kind of four rollers double draft spinning apparatus according to claim 2, it is characterised in that: the roller shaft is real The cylindrical structure of the heart, roller set is identical with the material of roller shaft and is irony or steel；The rubber roller is irony material Solid cylindrical structure, rubber roller set is rubber material, and for rubber roller set by bearing and rubber roller axis connection, rubber roller set can be around glue Roll shaft is freely rotated.

4. a kind of four rollers double draft spinning apparatus according to claim 1 or 2, it is characterised in that: four sieve Draw four rubber roller double draft spinning units, by the rear upper glue roller of two spindle positions of a spindle position group, in after upper glue roller, in preceding gluing Roller, preceding upper glue roller rubber roller set between the rubber roller rear insertion for being embedded in pressure-applying unit successively from back to front grab, in after it is embedding Enter to grab, in preceding insertion is grabbed, preceding insertion is grabbed, thus upper glue roller after realizing, in after upper glue roller, in preceding upper glue roller, preceding upper glue roller exist Installation on pressure-applying unit, pressure-applying unit are rotated along fixing axle under force, thus realize the pushing of pressure-applying unit, from And make the roller of rear bottom roll cover between the rubber roller of rear upper glue roller set close face contact, in after bottom roll roller set and In after upper glue roller rubber roller set between close face contact, in preceding bottom roll roller set and in preceding upper glue roller rubber roller set between Close face contact between close face contact, the roller set of preceding bottom roll and the rubber roller set of preceding upper glue roller, at this point, first motor The roller shaft rotation of bottom roll, then directly drives the preceding bottom roll of connection integrated with the roller shaft of preceding bottom roll before driving Roller set rotates synchronously, and then drives and covers synchronous turn of the rubber roller set of preceding upper glue roller of close face contact with the roller of preceding bottom roll Dynamic, the roller shaft of bottom roll rotates after the roller shaft of preceding bottom roll is driven by preceding connection gear or rear connection gear, then directly The roller that tape splicing moves the rear bottom roll of connection integrated with the roller shaft of rear bottom roll, which covers, to be rotated synchronously, and is then driven and lower sieve afterwards The rubber roller set that the roller of drawing covers the rear upper glue roller of close face contact rotates synchronously, then at this time between rear roller pair and front roller pair The total draft multiple of formation is equal to the gear ratio of preceding connection gear or rear connection gear, during the second motor is driven jointly by belt The roller shaft of preceding bottom roll, in after bottom roll roller shaft rotation, then respectively directly drive and in preceding bottom roll roller shaft The roller set of preceding bottom roll in integration connection, in after in the integrated connection of the roller shaft of bottom roll rear bottom roll sieve It helps pull a cart synchronous rotation, the roller of the preceding bottom roll in is then driven to cover the rubber roller of preceding upper glue roller in close face contact respectively Set, the rubber roller set that the roller of rear bottom roll covers rear upper glue roller in close face contact in rotate synchronously, at this point, in rear roller To the first draft area is formed between middle rear roller pair, the second draft area is formed between middle front roller pair and front roller pair, in after The transition Distribution Area without drawing-off, and the drafting multiple of the first draft area and the second drawing-off are formed between roller pair and middle front roller pair The product of the drafting multiple in area keeps constant and equal to the total draft multiple formed between rear roller pair and front roller pair, and due to Middle rear roller pair is identical as the revolving speed of middle front roller pair, so that transition Distribution Area does not have a drawing-off effect, that is, transition is whole The drafting multiple for managing area is 1, at this point, by the adjusting of the second motor output speeds to rear roller pair and middle front roller in realization Adjusting to revolving speed, so that the product in the drafting multiple of the drafting multiple and the second draft area of the first draft area is kept constant In the case of realize the synchronous adjustment of the drafting multiple of the first draft area and the drafting multiple of the second draft area, that is, realize The adjusting of the Pullin performances of one draft area and the second draft area, and the drafting multiple that the first draft area is arranged at this time is led less than second Stretch the drafting multiple in area.

5. a kind of four rollers double draft spinning apparatus according to claim 1 or 2, it is characterised in that: four sieve Draw one in after three rubber roller double draft spinning units, by the rear upper glue roller 2 of two spindle positions of a spindle position group, in after upper glue roller 4, The rubber roller rear insertion for being embedded in pressure-applying unit successively from back to front between the rubber roller set of preceding upper glue roller 8 grabs, in after insertion Grab, in preceding insertion is grabbed, thus upper glue roller after realizing, in after the installation of upper glue roller, preceding upper glue roller on pressure-applying unit, pressure-applying unit Rotated under force along fixing axle, to realize the pushing of pressure-applying unit so that the roller set of rear bottom roll 1 and Afterwards close face contact between the rubber roller set of upper glue roller 2, in after bottom roll 3 roller set and in after the rubber roller of upper glue roller 4 cover it Between close face contact between close face contact, the roller set of preceding bottom roll 7 and the rubber roller set of preceding upper glue roller 8, in front lower sieve The side of pulling on is hanging, at this point, first motor 16 drives the roller shaft rotation of preceding bottom roll, then directly drives sieve with preceding bottom roll The roller of the preceding bottom roll of pulling shaft integration connection, which covers, to be rotated synchronously, and is then driven and is connect with the close pressing of the roller of preceding bottom roll set The rubber roller of the preceding upper glue roller of touching, which covers, to be rotated synchronously, and the roller shaft of preceding bottom roll is driven by preceding connection gear 15 or rear connection gear The roller shaft rotation of bottom roll afterwards, then directly drives the roller of the rear bottom roll of connection integrated with the roller shaft of rear bottom roll Set rotates synchronously, and the rubber roller set for the rear upper glue roller for covering close face contact with the roller of rear bottom roll is then driven to rotate synchronously, The total draft multiple then formed between rear roller pair and front roller pair at this time is equal to the number of teeth of preceding connection gear or rear connection gear The roller shaft of preceding bottom roll in being driven jointly than, the second motor 14 by belt 13, in after bottom roll roller shaft rotation, then Directly drive respectively the roller set of preceding bottom roll in the integrated connection of in the roller shaft of preceding bottom roll and in rear bottom roll The roller of bottom roll, which covers, after in roller shaft integration connection rotates synchronously, and the roller set of bottom roll is close after then driving in The rubber roller of upper glue roller, which covers, after in face contact rotates synchronously, at this point, forming first between rear roller pair and middle rear roller pair Draft area forms the second draft area between middle rear roller pair and front roller pair, and the drafting multiple of the first draft area and second is led The product for stretching the drafting multiple in area keeps constant and is equal to the total draft multiple that is formed between rear roller pair and front roller pair, then this When, when four rollers, four rubber roller double draft spinning compared with, roller gauge in the second draft area increases, to realize the The adjusting between roller gauge in two draft areas, at this point, by the adjusting of the second motor output speeds to sieve rear in realization The adjusting to revolving speed is drawn, so that the product in the drafting multiple of the drafting multiple and the second draft area of the first draft area is kept constant In the case where realize the synchronous adjustment of the drafting multiple of the first draft area and the drafting multiple of the second draft area, that is, realize The adjusting of the Pullin performances of first draft area and the second draft area, and the drafting multiple of the first draft area is set at this time much smaller than the The drafting multiple of two draft areas.

6. a kind of four rollers double draft spinning apparatus according to claim 1 or 2, it is characterised in that: four sieve Draw one in first three rubber roller double draft spinning unit, by the rear upper glue roller 2 of two spindle positions of a spindle position group, in preceding upper glue roller 6, The rubber roller rear insertion for being embedded in pressure-applying unit successively from back to front between the rubber roller set of preceding upper glue roller 8 grabs, in preceding insertion Grab, it is preceding insertion grab in, thus realize after upper glue roller, in the installation of preceding upper glue roller, preceding upper glue roller on pressure-applying unit, pressure-applying unit Rotated under force along fixing axle, to realize the pushing of pressure-applying unit so that the roller set of rear bottom roll 1 and Afterwards close face contact between the rubber roller set of upper glue roller 2, in preceding bottom roll 5 roller set and in the rubber roller of preceding upper glue roller 6 cover it Between close face contact between close face contact, the roller set of preceding bottom roll 7 and the rubber roller set of preceding upper glue roller 8, in front lower sieve The side of pulling on is hanging, at this point, first motor 16 drives the roller shaft rotation of preceding bottom roll, then directly drives sieve with preceding bottom roll The roller of the preceding bottom roll of pulling shaft integration connection, which covers, to be rotated synchronously, and is then driven and is connect with the close pressing of the roller of preceding bottom roll set The rubber roller of the preceding upper glue roller of touching, which covers, to be rotated synchronously, and the roller shaft of preceding bottom roll is driven by preceding connection gear 15 or rear connection gear The roller shaft rotation of bottom roll afterwards, then directly drives the roller of the rear bottom roll of connection integrated with the roller shaft of rear bottom roll Set rotates synchronously, and the rubber roller set for the rear upper glue roller for covering close face contact with the roller of rear bottom roll is then driven to rotate synchronously, The total draft multiple then formed between rear roller pair and front roller pair at this time is equal to the number of teeth of preceding connection gear or rear connection gear The roller shaft of preceding bottom roll in being driven jointly than, the second motor 14 by belt 13, in after bottom roll roller shaft rotation, then Directly drive respectively the roller set of preceding bottom roll in the integrated connection of in the roller shaft of preceding bottom roll and in rear bottom roll The roller of bottom roll, which covers, after in roller shaft integration connection rotates synchronously, and then drives the roller set of the preceding bottom roll in close The rubber roller of preceding upper glue roller, which covers, in face contact rotates synchronously, at this point, forming first between rear roller pair and middle front roller pair Draft area forms the second draft area between middle front roller pair and front roller pair, and the drafting multiple of the first draft area and second is led The product for stretching the drafting multiple in area keeps constant and is equal to the total draft multiple that is formed between rear roller pair and front roller pair, then this When, when four rollers, four rubber roller double draft spinning compared with, roller gauge in the first draft area increases, to realize the The adjusting between roller gauge in one draft area, at this point, by the adjusting of the second motor output speeds to preceding sieve in realization The adjusting to revolving speed is drawn, so that the product in the drafting multiple of the drafting multiple and the second draft area of the first draft area is kept constant In the case where realize the synchronous adjustment of the drafting multiple of the first draft area and the drafting multiple of the second draft area, that is, realize The adjusting of the Pullin performances of first draft area and the second draft area.

7. a kind of Yarn spinning method, it is characterised in that: spinned using four roller double draft of one kind described in claim 1,2 or 4 Short fine rove is entered drawing-off spinning unit via feeding horn mouth by device, and the short fine rove of feeding is directly by rear roller pair Rear bottom roll and rear upper glue roller between press, and constantly exported under the rotation of rear roller pair drive, it is short fine thick after output Yarn then by bottom roll after in middle rear roller pair and in after press between upper glue roller, during which the drawing-off by the first draft area is made With, so that the short fine rove of feeding is stretched under the small drawing-off effect of the first draft area and attenuates to obtain the first yarn, the One yarn is constantly exported in the case where the rotation of middle rear roller pair drives, and the first yarn after output is then by before in middle front roller pair Bottom roll and in press between preceding upper glue roller, during which the arrangement by transition Distribution Area acts on, and attenuates to obtain so that stretching The first yarn in fiber realized in the case where no drawing-off acts on by faint transition be transferred to complete stability distribution transformation, to make It obtains and generates stable internal friction field between the fiber in the first yarn, carried out to enter in the second draft area for the first yarn It is ready before high draft effect, the first yarn for arranging output through transition is constantly defeated in the case where the rotation of middle front roller pair drives Out, the first yarn after output is then pressed between the preceding bottom roll of front roller pair and preceding upper glue roller, is during which led by second The drawing-off effect in area is stretched, so that the first yarn is stretched under the high draft effect of the second draft area attenuates to obtain the second palpus Item, during this, the fiber in the first yarn is in stable internal friction field and preceding bottom roll and preceding upper glue roller to the first yarn Interior fiber, which generates, to be realized in front roller under the comprehensively control in the external friction field of force that rolling friction is formed to the concentralized control at rear portion, And due in the first yarn at this time with the internal friction field of Stable distritation, it is real to improve the drafting multiple of the second draft area The raising of the total draft multiple formed between existing rear roller pair and front roller pair；The yarn obtained after drawing-off is defeated through drafting system again Resultant yarn is constantly twisted after out under the action of twisting the twist and on spool.

8. a kind of Yarn spinning method, it is characterised in that: spinned using four roller double draft of one kind described in claim 1,2 or 5 Short fine rove is entered drawing-off spinning unit via feeding horn mouth by device, and the short fine rove of feeding is directly by rear roller pair Rear bottom roll and rear upper glue roller between press, and constantly exported under the rotation of rear roller pair drive, it is short fine thick after output Yarn then by bottom roll after in middle rear roller pair and in after press between upper glue roller, during which the drawing-off by the first draft area is made With, so that the short fine rove of feeding is stretched under the small drawing-off effect of the first draft area and attenuates to obtain third yarn, the Three yarns are constantly exported in the case where the rotation of middle rear roller pair drives, and the third yarn after output is then by front lower sieve of front roller pair It draws and is pressed between preceding upper glue roller, during which the drawing-off by the second draft area acts on, so that third yarn is in the second drawing-off It is stretched under the high draft effect in area and attenuates to obtain the 4th yarn, during this, the fiber in third yarn is by front roller pair Before pressure and speed, by bottom roll after in keep front lower surface of roller in synchronous rotational speed without the rolling under pressing active force Dynamic friction effect, so that an additional external friction field of force is provided to the fiber in third yarn in the second draft area, thus real Now to the more stable outer control action of the fiber in third yarn, so that the fiber in third yarn is adding outer rub It wipes the field of force and preceding bottom roll and preceding upper glue roller and the comprehensive of the external friction field of force that rolling friction is formed is generated to the fiber in third yarn The lower realization of control is closed in front roller to the concentralized control at rear portion, to improve the drafting multiple of the second draft area, realizes rear roller Raising to the total draft multiple formed between front roller pair；The yarn obtained after drawing-off is adding after drafting system exports again Resultant yarn is constantly twisted under the action of the twirl twist and on spool.

9. a kind of Yarn spinning method, it is characterised in that: spinned using four roller double draft of one kind described in claim 1,2 or 6 Short fine rove is entered drawing-off spinning unit via feeding horn mouth by device, and the short fine rove of feeding is directly by rear roller pair Rear bottom roll and rear upper glue roller between press, and constantly exported under the rotation of rear roller pair drive, it is short fine thick after output Yarn then by preceding bottom roll in middle front roller pair and in press between preceding upper glue roller, during which the drawing-off by the first draft area is made With, so that the short fine rove of feeding is stretched under the small drawing-off effect of the first draft area and attenuates to obtain the 5th yarn, this In the process, the fiber in short fine rove is before by middle front roller to by pressure and speed, by synchronous turn of bottom roll holding preceding in After in speed bottom roll surface without the rolling friction effect under pressing active force, thus to short fine rove in the first draft area Interior fiber provides an additional external friction field of force, to realize that the more stable external control to the fiber in short fine rove makes With so that it is short fibre rove in fiber the additional external friction field of force and in preceding bottom roll and in preceding upper glue roller to it is short fibre rove It realizes under the comprehensively control in the external friction field of force that interior fiber generation rolling friction is formed and becomes in concentration of the middle front roller to rear portion Speed realizes the total draft multiple formed between rear roller pair and front roller pair to improve the drafting multiple of the first draft area It improves, the 5th yarn is constantly exported in the case where the rotation of middle front roller pair drives, and the 5th yarn after output is then by front roller pair Preceding bottom roll and preceding upper glue roller between press, during which by the second draft area drawing-off act on so that the 5th yarn exists It is stretched under the high draft effect of second draft area and attenuates to obtain the 6th yarn；The yarn obtained after drawing-off is defeated through drafting system again Resultant yarn is constantly twisted after out under the action of twisting the twist and on spool.