CN109652879A

CN109652879A - The double drawing-off spinning apparatus of single ingot and its Yarn spinning method

Info

Publication number: CN109652879A
Application number: CN201910061146.XA
Authority: CN
Inventors: 宋娟; 苏旭中; 刘新金
Original assignee: Jiangnan University
Current assignee: Jiangnan University
Priority date: 2019-01-23
Filing date: 2019-01-23
Publication date: 2019-04-19
Anticipated expiration: 2039-01-23
Also published as: CN109652879B

Abstract

The invention discloses the double drawing-off spinning apparatus of single ingot and its Yarn spinning methods, before, the right end of bottom roll axis is respectively by first afterwards, second motor drives, middle bottom roller set includes a left side, right roller set, and left roller set is fixedly connected with roller shaft, right roller set is crossed bearing with roller shaft and is connect, and it is driven by belt by transmission shaft, rear roller axis is driven with middle bottom roller axis by first gear group, transmission shaft is driven with front lower roller shaft by second gear group, first rove and the second rove are after first break draft roller is to pressing feeding successively respectively through left back, the drawing-off in right first break draft area, then again through left front, right front draft zone drawing-off obtains first, with the second yarn, to realize the first of feeding, second rove is not the same under identical total draft multiple, drafting process in first break draft area under Pullin performances, realize the double roving for feeding same spindle position Drafting process according to the different needs improves resultant yarn comprehensive quality to optimize spinning process.

Description

The double drawing-off spinning apparatus of single ingot and its Yarn spinning method

Technical field

The invention belongs to textile technology fields, are related to a kind of new ring spinning technology, the specially double drawing-off spinning of single ingot Device and its Yarn spinning method.

Background technique

With the continuous advance in epoch, requirement of the people for garment material is continuously improved, and textile clothing industry is at present One follow the fashion, the epoch of diversification and high-quality.Therefore, the development of textile raw material, textile technology also proposed new It is required that.Among these, textile high-quality, high performance and its production and processing cleans the master for having become Modern Textile Industry Developing direction is wanted, and improves the effective way of product specification and added value.With the raising and work of modern life level The quickening of rhythm, the high conformality and easy care performance of textile have become the important attribute of high quality fabric and clothes and significantly mark Will.But there is also many problems, such as cotton fabric dress easily to play fold, washing in terms of conformality for difference Fiber Materials fabric at present Drying rear poor flatness needs ironing, and wool fabric is machine-washed, and easy felting, fabric rivel conformality are poor, and it is conformal that chemical & blended fabric wears easy arch camber Deng.Conformality is inadequate, conformal effect is unstable, existing conformal technique environmental protection index many realistic problems such as not up to standard difficult to control As the serious obstruction of textile high-quality, demand of the modern society people to high-quality dressing has not been adapted to.Research and development are high Conformal textile key technology of preparing simultaneously realizes that its industrial application is to promote China's textile quality and competitiveness in the international market Important channel and industry common recognition.

Compound fasciated yarn is a kind of yarn of mutually compound using different fibers and production structure, can be passed through in spinning The control of yarn texture and performance is realized to the control of fiber compound structure, thus the production of the yarn needed for realizing.But mesh It is preceding since spinning process is limited, cause resultant yarn comprehensive quality lower.

Summary of the invention

The technical issues of solution: for overcome the deficiencies in the prior art, by using under in bilateral symmetry The rubber roller set of the roller set and middle upper glue roller of roller, the first rove and the second rove for realizing feeding are in identical total draft multiple Under different forward and backward draft areas in drafting process under Pullin performances, then realize feed the double roving of same spindle position according to The different drafting process needed improve resultant yarn comprehensive quality to optimize spinning process, and the present invention provides the double drawing-offs of single ingot to spin Yarn feeding device and its Yarn spinning method.

Technical solution: the double drawing-off spinning apparatus of single ingot, described device includes drafting system, and drafting system includes first break draft sieve It draws to, middle drawing rollers to, front traction roller pair, first break draft roller is to including rear bottom roll and rear upper glue roller, middle drawing rollers To including middle bottom roller and middle upper glue roller, front traction roller to including preceding bottom roll and preceding upper glue roller, rear bottom roll, in lower sieve It draws, preceding bottom roll includes roller shaft, the roller shaft integrated solid of the rear bottom roll of all spindle positions of spinning frame front truck table top It connects calmly, the roller shaft integration of the middle bottom roller of all spindle positions is fixedly connected, the roller shaft one of the preceding bottom roll of all spindle positions Body is fixedly connected, and the roller shaft integration of the rear bottom roll of all spindle positions of spinning frame rear car table top is fixedly connected, owns The roller shaft integration of the middle bottom roller of spindle position, which is fixedly connected, the roller shaft integration of the preceding bottom roll of all spindle positions is fixed connects It connects, roller shaft exterior circumference is equipped with roller set；The roller set of middle bottom roller is divided into left roller set and right roller set, left roller set Integrated with roller shaft to be fixedly connected, right roller set is slidably connected with roller shaft by the first intermediate bearing, a left side for right roller set End is fixedly connected with band moving sleeve, is covered on the roller shaft between the left roller set and right roller set of middle bottom roller with moving sleeve, Right end with moving sleeve is fixedly connected with the left end that right roller covers, and is retained between the left end with moving sleeve and the right end of left roller set Spacing, band moving sleeve are connect by belt with transmission shaft driven；The transmission shaft one of one all spindle position of spinning frame front truck table top Change connection, the transmission shaft integration connection of all spindle positions of spinning frame rear car table top, the left end of transmission shaft and right end lead to respectively It crosses bearing to be fastened on the vehicle frame of spinning frame, the right end of the roller shaft of preceding bottom roll is driven by first motor to be rotated, and is passed The right end of the roller shaft of the right end of moving axis and preceding bottom roll is sequentially connected by the first connection gear group, the roller shaft of rear bottom roll Right end rotation is driven by the second motor, the right end of the roller shaft of middle bottom roller and it is rear before bottom roll roller shaft right end it is logical Cross the transmission connection of the second connection gear group；Upper glue roller, middle upper glue roller, preceding upper glue roller include rubber roller afterwards；After one spinning frame Ride face, the adjacent spindle position of a spindle position of front truck table top and right side constitute a spindle position group, two ingots of a spindle position group The rubber roller integration of rear upper glue roller on position connects, the rubber roller integration of middle upper glue roller connects, the rubber roller of preceding upper glue roller Integration connection, the rear upper glue roller of each spindle position, middle upper glue roller, preceding upper glue roller rubber roller exterior circumference make-up be cased with glue The rubber roller set of roller set, rear upper glue roller is consistent with the length that the roller of rear bottom roll covers and left and right ends are aligned, the glue of rear upper glue roller Roller set is connect with the rubber roller of rear upper glue roller by the second intermediate bearing, the roller set of the rubber roller set and preceding bottom roll of preceding upper glue roller Length it is consistent and left and right ends are aligned, the rubber roller set of preceding upper glue roller and the rubber roller of preceding upper glue roller are connected by third intermediate bearing It connects, the rubber roller set of middle upper glue roller is divided into left rubber roller set and right rubber roller set, left sieve of left the rubber roller set and middle bottom roller of middle upper glue roller The length helped pull a cart is consistent and left and right ends are aligned, and the right rubber roller set of middle upper glue roller is consistent with the length that the right roller of middle bottom roller covers And left and right ends are aligned, the left rubber roller of middle upper glue roller set is connect with the rubber roller of middle upper glue roller by the 4th intermediate bearing, on The right rubber roller set of rubber roller is connect with the rubber roller of middle upper glue roller by the 5th intermediate bearing；One spindle position group, two spindle positions it is rear on Rubber roller, middle upper glue roller, preceding upper glue roller rubber roller set between rubber roller successively from back to front be embedded in the rear embedding of pressure-applying unit Enter to grab, it is middle insertion grab, it is preceding insertion grab in, thus realize after the peace of upper glue roller, middle upper glue roller, preceding upper glue roller on pressure-applying unit Dress, the rear portion of pressure-applying unit are fixed on the ride face of spinning frame by fixing axle, and pressure-applying unit is rotated along fixing axle, are being turned Upper glue roller, middle upper glue roller, the pushing of preceding upper glue roller under a certain pressure after being realized during dynamic.

Preferably, the roller shaft is solid cylindrical structure.

Preferably, roller shaft is identical as the material that roller covers, and is irony or steel.

Preferably, left roller set is identical with the length that right roller covers, and there are gaps therebetween.

Preferably, the material with moving sleeve is identical as the material that right roller covers, and is the cylinder of both ends open with moving sleeve Hollow structure.

Preferably, transmission shaft is solid cylindrical structure.

Preferably, rubber roller is irony material, and is solid cylindrical structure.

Preferably, rubber roller set is rubber material.

The Yarn spinning method of the double drawing-off spinning apparatus of any description above single ingot, in use, pressure-applying unit is under force It is rotated along fixing axle, so that the pushing of pressure-applying unit is realized, so that the rubber roller set of the rear upper glue roller of each spindle position is with after The roller of bottom roll covers close face contact, the left rubber roller set of middle upper glue roller and right rubber roller cover respectively with the left roller of middle bottom roller Close face contact between set, right roller set is closely pressed between the rubber roller set of preceding upper glue roller and the roller set of preceding bottom roll and is crimped Touching, the roller shaft rotation of bottom roll, then drives be fixedly connected integrated with the roller shaft of preceding bottom roll before first motor drives The roller of preceding bottom roll cover and rotate synchronously, the rotation of the roller of preceding bottom roll set then drives 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 rotation of preceding bottom roll then passes through the first connection gear group Transmission shaft rotation is driven, transmission shaft rotation then drives the right roller of middle bottom roller to cover rotation, the right side of middle bottom roller by belt The rotation of roller set, which then drives, covers synchronous turn of the right rubber roller set of middle upper glue roller of close face contact with the right roller of middle bottom roller It is dynamic, the middle right side that the right rubber roller set with right roller set and middle upper glue roller by middle bottom roller forms is being led by front traction roller at this time It stretches and forms right front draft zone between roller pair, the drafting multiple of right front draft zone is fixed and is equal to the number of teeth of the first connection gear group Than；The roller shaft rotation of bottom roll, then drives be fixedly connected integrated with the roller shaft of rear bottom roll after second motor drives The roller of rear bottom roll cover and rotate synchronously, the rotation of the roller of rear bottom roll set then drives close with the roller of rear bottom roll set The rubber roller of the rear upper glue roller of face contact, which covers, to be rotated synchronously, and the roller shaft rotation of rear bottom roll then passes through the second connection gear group The roller shaft rotation of middle bottom roller is driven, the roller shaft rotation of middle bottom roller then drives integrated with the roller shaft of middle bottom roller The left roller for the middle bottom roller being fixedly connected covers rotation, and the left roller set rotation of middle bottom roller then drives the left side with middle bottom roller The left rubber roller set that roller covers the middle upper glue roller of close face contact rotates synchronously, at this time by first break draft roller to sieve lower in Left back draft area is formed between left drawing rollers pair in the left rubber roller set composition of the left roller set drawn and middle upper glue roller, it is left back to lead The drafting multiple for stretching area fix and be equal to the second connection gear group gear ratio, meanwhile, by first break draft roller to under The right roller of roller covers and the right rubber roller of middle upper glue roller covers and forms right first break draft area in composition between right drawing rollers pair, after right The drafting multiple of draft area is equal to first break draft roller to the total draft multiple between front traction roller pair divided by right front draft zone Drafting multiple, by front traction roller to forming with left roller set and the left rubber roller set of middle upper glue roller by middle bottom roller in Form left front draft area between left drawing rollers pair, the drafting multiple of left front draft area be equal to first break draft roller to and front draft sieve Draw the total draft multiple between divided by the drafting multiple of left back draft area；Feeding loudspeaker is added at the rear portion of first break draft roller pair Mouth device, feeding bell mouth arrangement includes left horn mouth and right horn mouth, passes through connection between left horn mouth and right horn mouth Cross bar is fixedly connected, and retains spacing between the two, and the first rove feeds drafting system by left horn mouth, and the second rove is by right loudspeaker Mouth feeds drafting system, and the first rove of feeding between the roller set of rear bottom roll and the rubber roller set of rear upper glue roller then by pressing Pressure feeding is then pressed between the left roller set of middle bottom roller and the left rubber roller of middle upper glue roller set and is exported, first during this Rove is acted on obtaining the first fibre bundle by the drawing-off of left back draft area, then the first fibre bundle by preceding bottom roll roller set with Output is pressed between the rubber roller set of preceding upper glue roller, the first fibre bundle is acted on obtaining the by the drawing-off of left front draft area during this One ribbon, the second rove of feeding are then fed by pressing between the roller set of rear bottom roll and the rubber roller set of rear upper glue roller, Then pressed and exported between the right roller set of middle bottom roller and the right rubber roller of middle upper glue roller set, during this second rove by The drawing-off in right first break draft area acts on obtaining the second fibre bundle, and the second fibre bundle is by the glue of the roller set and preceding upper glue roller of preceding bottom roll Output is pressed between roller set, the second fibre bundle is acted on obtaining the second ribbon by the drawing-off of right front draft zone during this, from And the total draft multiple for realizing that the first rove of feeding and the second rove are subject in drafting system is identical；First ribbon and Two ribbons are constantly exported in the case where the rotation of front traction roller pair drives, and the first ribbon and second through drafting system output are fine Dimension item interacts resultant yarn under the action of twisting the twist, according to the property of the first ribbon of output and the second ribbon, when When the orientation for twisting the twist is that Z is twisted, the mechanism of interaction resultant yarn at this time includes four kinds, the first is positioned at left side The second ribbon for being located at right side is wrapped up resultant yarn by the first ribbon, and the two respectively carries out twisting effect in encapsulation process； It is for second that the first ribbon positioned at left side is twisted first, is then located at the second ribbon looping resultant yarn on right side again, and The two respectively carries out twisting effect simultaneously in encapsulation process；The third is positioned at first ribbon in left side and positioned at right side The second ribbon directly and close mutually winding resultant yarn, and be during the winding process the first ribbon positioned at left side by right side Second ribbon gradually looping, and the two respectively while carrying out twisting effect during mutual winding；4th kind is position The first ribbon in left side and the respectively preliminary twisting first of the second ribbon positioned at right side, then mutually wind resultant yarn again, It and is during the winding process the first ribbon through tentatively twisting positioned at left side by second fiber through tentatively twisting on right side Item gradually looping；When the orientation for twisting the twist is that S is twisted, the mechanism of interaction resultant yarn at this time is including four kinds, first Kind is that the second ribbon positioned at right side will wrap up resultant yarn positioned at second ribbon in left side, and the two is respective in encapsulation process Carry out twisting effect；It is for second that the second ribbon positioned at right side is twisted first, is then located at first fiber in left side again Looping resultant yarn, and the two respectively carries out twisting effect simultaneously in encapsulation process；The third is the first fibre positioned at left side It ties up item and the second ribbon positioned at right side directly and closes mutually winding resultant yarn, and during the winding process for positioned at the second of right side Ribbon is by first ribbon in left side gradually looping, and the two respectively while carrying out twisting work during mutual winding With；4th kind is respectively twisted first positioned at first ribbon in left side and the second ribbon positioned at right side, then again mutually Resultant yarn is wound, and during the winding process tentatively to be twisted in left side positioned at second ribbon through tentatively twisting on right side Firstth ribbon gradually looping.

Preferably, the drafting multiple for the front draft zone being subject to and the drafting multiple in first break draft area are same or different, it is preceding, Pullin performances in first break draft area are different, including three kinds of situations, the first situation is the gear ratio and the of the first connection gear group The product of the gear ratio of two connection gear groups is equal to first break draft roller to the total draft multiple between front traction roller pair, also It is that the drafting multiple of left back draft area and the product of drafting multiple of right front draft zone are equal to total draft multiple, at this time the first rove The drafting multiple for the left back draft area being subject in first break draft area is equal to the right first break draft that the second rove is subject in first break draft area The drafting multiple in area, the drafting multiple for the left front draft area that the first rove is subject in front draft zone are equal to the second rove and lead preceding Stretch the drafting multiple for the right front draft zone being subject in area, that is, total drafting multiple phase that the first rove and the second rove are subject to Together, and the drafting multiple of the drafting multiple of front draft zone and first break draft area that is subject to is also identical, to realize the first rove and the Two rove are in drafting system by identical drafting process；Second situation be the first connection gear group gear ratio with The product of the gear ratio of second connection gear group is less than first break draft roller to the total draft multiple between front traction roller pair, It is exactly that the drafting multiple of left back draft area and the product of drafting multiple of right front draft zone are less than total draft multiple, first is thick at this time It is led behind the right side that the drafting multiple for the left back draft area that yarn is subject in first break draft area is subject in first break draft area less than the second rove The drafting multiple in area is stretched, the drafting multiple for the left front draft area that the first rove is subject in front draft zone is greater than the second rove preceding The drafting multiple for the right front draft zone being subject in draft area, that is, total drafting multiple that the first rove and the second rove are subject to It is identical, but the drafting multiple in the drafting multiple for the front draft zone being subject to and first break draft area is different, to realize the first rove and the Two rove are in drafting system by different drafting process；The third situation is the gear ratio and second of the first connection gear group The product of the gear ratio of connection gear group is greater than first break draft roller to the total draft multiple between front traction roller pair, that is, The product of the drafting multiple of the drafting multiple of left back draft area and right front draft zone is greater than total draft multiple, and the first rove exists at this time The drafting multiple for the left back draft area being subject in first break draft area is greater than the right first break draft area that the second rove is subject in first break draft area Drafting multiple, the drafting multiple for the left front draft area that the first rove is subject in front draft zone is less than the second rove in front draft The drafting multiple for the right front draft zone being subject in area, that is, total drafting multiple phase that the first rove and the second rove are subject to Together, but the drafting multiple of the drafting multiple of front draft zone and first break draft area that is subject to is different, to realize the first rove and second Rove is in drafting system by different drafting process.

The utility model has the advantages that the double drawing-off spinning apparatus of single ingot of the present invention and its Yarn spinning method, which use, has bilateral symmetry Middle bottom roller roller set and middle upper glue roller rubber roller set, realize that the first rove of feeding and the second rove are always led identical The drafting process in the different forward and backward draft areas under multiple under Pullin performances is stretched, then realizes and feeds the double thick of same spindle position Yarn drafting process according to the different needs improves resultant yarn comprehensive quality to optimize spinning process.

Detailed description of the invention

Fig. 1 is the structural schematic diagram of the double drawing-off spinning apparatus of single ingot of the present invention；

Wherein, 1 is rear bottom roll, and 2 be rear upper glue roller, and 3 be middle bottom roller, and 4 be middle upper glue roller, and 5 be preceding bottom roll, and 6 are Preceding upper glue roller, 7 be roller shaft, and 8 be roller set, and 9 be rubber roller set, and 10 be rubber roller, and 11 be left rubber roller set, and 12 be right rubber roller set, 13 be left roller set, and 14 be right roller set, and 15 be the first intermediate bearing, and 16 be belt, and 17 be transmission shaft, and 18 be first motor, 19 be the first connection gear group, 20 second connection gear groups, 21 be the second motor, 22 be the first rove, 23 be the second rove, 24 For band moving sleeve.

Specific embodiment

Following embodiment further illustrates the contents of the present invention, but should not be construed as limiting the invention.Without departing substantially from In the case where spirit of that invention and essence, to modification made by the method for the present invention, step or condition and replaces, belong to the present invention Range.Unless otherwise specified, the conventional means that technological means used in embodiment is well known to those skilled in the art.

Embodiment 1

As shown in Figure 1, the double drawing-off spinning apparatus of single ingot, described device includes drafting system, and drafting system includes first break draft Roller is to, middle drawing rollers to, front traction roller pair, and first break draft roller is to including rear bottom roll 1 and rear upper glue roller 2, middle drawing-off Roller is to including middle bottom roller 3 and middle upper glue roller 4, and front traction roller is to including preceding bottom roll 5 and preceding upper glue roller 6, rear bottom roll 1, middle bottom roller 3, preceding bottom roll 5 include roller shaft 7, sieve of the rear bottom roll 1 of all spindle positions of spinning frame front truck table top 7 integration of pulling shaft is fixedly connected, 7 integration of roller shaft of the middle bottom roller 3 of all spindle positions is fixedly connected, all spindle positions it is front lower 7 integration of roller shaft of roller 5 is fixedly connected, the roller shaft 7 one of the rear bottom roll 1 of all spindle positions of spinning frame rear car table top Body is fixedly connected, 7 integration of roller shaft of the middle bottom roller 3 of all spindle positions is fixedly connected, the preceding bottom roll 5 of all spindle positions 7 integration of roller shaft is fixedly connected, and 7 exterior circumference of roller shaft is equipped with roller set 8；It is left sieve that the roller of middle bottom roller 3, which covers 8 points, It helps pull a cart 13 and right roller set 14, left roller set 13 is integrated with roller shaft 7 to be fixedly connected, and right roller covers 14 and passes through with roller shaft 7 First intermediate bearing 15 is slidably connected, and the left end of right roller set 14 is fixedly connected with band moving sleeve 24, and 24 sets of moving sleeve of band is in On roller shaft 7 between the left roller set 13 and right roller set 14 of bottom roll 3, the right end with moving sleeve 24 and right roller cover 14 Left end is fixedly connected, and spacing is retained between the left end with moving sleeve 24 and the right end of left roller set 13, and band moving sleeve 24 passes through skin Band 16 and transmission shaft 17 are sequentially connected；The 17 integration connection of transmission shaft of one all spindle position of spinning frame front truck table top is one thin The 17 integration connection of transmission shaft of all spindle positions of yarn machine rear car table top, the left end of transmission shaft 17 passes through bearing with right end respectively and connects It is fixed on the vehicle frame of spinning frame, the right end of the roller shaft 7 of preceding bottom roll 5 drives rotation, transmission shaft 17 by first motor 18 Right end and preceding bottom roll 5 roller shaft 7 right end by the first connection gear group 19 transmission connection, the roller of rear bottom roll 1 The right end of axis 7 passes through the second motor 21 and drives rotation, the roller shaft 7 of the right end of the roller shaft 7 of middle bottom roller 3 and rear preceding bottom roll Right end pass through the second connection gear group 20 be sequentially connected；Upper glue roller 2, middle upper glue roller 4, preceding upper glue roller 6 include rubber roller afterwards 10；One spinning frame rear car table top, the adjacent spindle position of a spindle position of front truck table top and right side constitute a spindle position group, and one The 10 integration connection of rubber roller of rear upper glue roller 2 in two spindle positions of a spindle position group, 10 integration of rubber roller of middle upper glue roller 4 connect It connects, the 10 integration connection of the rubber roller of preceding upper glue roller 6, in the rear upper glue roller 2 of each spindle position, middle upper glue roller 4, preceding upper glue roller 6 The exterior circumference make-up of rubber roller 10 is cased with rubber roller set 9, the length of the roller set 8 of the rubber roller set 9 and rear bottom roll 1 of rear upper glue roller 2 Degree is consistent and left and right ends are aligned, and the rubber roller set 9 and the rubber roller 10 of rear upper glue roller 2 of rear upper glue roller 2 pass through the second intermediate bearing The rubber roller set 9 of connection, preceding upper glue roller 6 is consistent with the length of the roller of preceding bottom roll 5 set 8 and left and right ends are aligned, preceding upper glue roller 6 Rubber roller set 9 connect with the rubber roller 10 of preceding upper glue roller 6 by third intermediate bearing, 9 points of the rubber roller set of middle upper glue roller 4 is left glue Roller set 11 and right rubber roller set 12, the left rubber roller set 11 and the length of the left roller of middle bottom roller 3 set 13 of middle upper glue roller 4 are consistent and left Right both ends alignment, the right rubber roller of middle upper glue roller 4 cover 12 and left and right ends pair consistent with the length of the right roller of middle bottom roller 3 set 14 Together, the left rubber roller set 11 of middle upper glue roller 4 is connect with the rubber roller 10 of middle upper glue roller 4 by the 4th intermediate bearing, middle upper glue roller 4 Right rubber roller set 12 is connect with the rubber roller 10 of middle upper glue roller 4 by the 5th intermediate bearing；One spindle position group, two spindle positions it is rear on Rubber roller 2, middle upper glue roller 4, preceding upper glue roller 6 rubber roller set 9 between rubber roller 10 successively from back to front be embedded in pressure-applying unit Rear insertion grab, it is middle insertion grab, it is preceding insertion grab in, thus realize after upper glue roller 2, middle upper glue roller 4, preceding upper glue roller 6 in pressurization group The rear portion of installation on part, pressure-applying unit is fixed on the ride face of spinning frame by fixing axle, and pressure-applying unit is along fixing axle Rotation, upper glue roller 2, middle upper glue roller 4, the pushing of preceding upper glue roller 6 under a certain pressure after realizing during rotation.

The roller shaft 7 is solid cylindrical structure.

Roller shaft 7 is identical as the material of roller set 8, and is irony or steel.

Left roller set 13 is identical with the length of right roller set 14, and there are gaps therebetween.

Material with moving sleeve 24 is identical as the material of right roller set 14, is the cylindrical empty of both ends open with moving sleeve 24 Core structure.

Transmission shaft 17 is solid cylindrical structure.

Rubber roller 10 is irony material, and is solid cylindrical structure.

Rubber roller set 9 is rubber material.

The Yarn spinning method of the double drawing-off spinning apparatus of any description above single ingot, in use, pressure-applying unit is under force Rotated along fixing axle, to realize the pushing of pressure-applying unit so that the rubber roller set 9 of the rear upper glue roller 2 of each spindle position with The roller of bottom roll 1 covers 8 close face contacts afterwards, and the left rubber roller set 11 and right rubber roller set 12 of middle upper glue roller 4 descend sieve in respectively 3 left roller set 13, right roller is drawn to cover close face contact between 14, sieve of the rubber roller set 9 and preceding bottom roll 5 of preceding upper glue roller 6 It helps pull a cart close face contact between 8, the roller shaft 7 of bottom roll 5 rotates before first motor 18 drives, and then drives and preceding bottom roll The roller set 8 for the preceding bottom roll 5 that 57 integration of roller shaft is fixedly connected rotates synchronously, 8 rotation of the roller of preceding bottom roll 5 set after And the rubber roller set 9 for the preceding upper glue roller 6 for covering 8 close face contacts with the roller of preceding bottom roll 5 is driven to rotate synchronously, preceding bottom roll 5 Roller shaft 7 rotation then by the first connection gear group 19 drive transmission shaft 17 rotate, transmission shaft 17 rotation then passes through skin 14 rotation of right roller set of 14 rotation of right roller set for driving middle bottom roller 3 with 16, middle bottom roller 3 then drives and middle bottom roller The right rubber roller set 14 that 3 right roller covers the middle upper glue roller 4 of 14 close face contacts rotates synchronously, at this time by front traction roller pair And by the right roller of middle bottom roller 3 cover 14 and middle upper glue roller 4 right rubber roller set 12 form in formed between right drawing rollers pair The drafting multiple of right front draft zone, right front draft zone is fixed and is equal to the gear ratio of the first connection gear group 19；Second motor 21 The roller shaft 7 of bottom roll 1 rotates after drive, then drives rear lower sieve being fixedly connected integrated with the roller shaft 7 of rear bottom roll 1 1 roller set 8 is drawn to rotate synchronously, 8 rotation of roller set of rear bottom roll 1 then drives closely presses with the roller of rear bottom roll 1 set 8 The rubber roller set 9 of the rear upper glue roller 2 of press contacts rotates synchronously, and the rotation of roller shaft 7 of rear bottom roll 1 then passes through the second connection gear Group 20 drives the roller shaft 7 of middle bottom roller 3 to rotate, and the rotation of roller shaft 7 of middle bottom roller 3 then drives sieve with middle bottom roller 3 13 rotation of left roller set for the middle bottom roller 3 that 7 integration of pulling shaft is fixedly connected, 13 rotation of left roller set of middle bottom roller 3 is then It drives the left rubber roller set 11 for the middle upper glue roller 4 for covering 13 close face contacts with the left roller of middle bottom roller 3 to rotate synchronously, exists at this time By first break draft roller to left roller set 13 and the left rubber roller of middle upper glue roller 4 set 11 by middle bottom roller 3 form in left drawing-off Left back draft area is formed between roller pair, the drafting multiple of left back draft area is fixed and is equal to the number of teeth of the second connection gear group 20 Than, meanwhile, it is formed covering 12 to the right rubber roller with right roller set 14 and middle upper glue roller 4 by middle bottom roller 3 by first break draft roller In form right first break draft area between right drawing rollers pair, the drafting multiple in right first break draft area be equal to first break draft roller to preceding lead Stretch the total draft multiple between roller pair divided by the drafting multiple of right front draft zone, by front traction roller to by middle bottom roller Left front draft area is formed between left drawing rollers pair in 3 left roller set 13 and 11 composition of left rubber roller set of middle upper glue roller 4, it is left The drafting multiple of front draft zone is equal to first break draft roller to the total draft multiple between front traction roller pair divided by left back drawing-off The drafting multiple in area；Feeding bell mouth arrangement is added at the rear portion of first break draft roller pair, feeding bell mouth arrangement includes left loudspeaker Mouth and right horn mouth are fixedly connected by connecting cross bar between left horn mouth and right horn mouth, and retain spacing between the two, First rove 22 by left horn mouth feed drafting system, the second rove 23 by right horn mouth feed drafting system, the first of feeding Rove 22, which then is covered to press between 8 and the rubber roller set 9 of rear upper glue roller 2 by the roller of rear bottom roll 1, to be fed, then by middle bottom roller It presses and exports between 3 left roller set 13 and the left rubber roller set 11 of middle upper glue roller 4, the first rove 22 is led by left back during this The drawing-off for stretching area acts on obtaining the first fibre bundle, and then the first fibre bundle is by the roller set 8 and preceding upper glue roller 6 of preceding bottom roll 5 Output is pressed between rubber roller set 9, the first fibre bundle is acted on obtaining the first ribbon by the drawing-off of left front draft area during this, Second rove 23 of feeding, which then is covered to press between 8 and the rubber roller set 9 of rear upper glue roller 2 by the roller of rear bottom roll 1, to be fed, then It is covered to press between 14 and the right rubber roller set 12 of middle upper glue roller 4 by the right roller of middle bottom roller 3 and export, the second rove 23 during this Drawing-off by right first break draft area acts on obtaining the second fibre bundle, and the second fibre bundle is by the roller set 8 of preceding bottom roll 5 and preceding gluing Output is pressed between the rubber roller set 9 of roller 6, the second fibre bundle is acted on obtaining the second fibre by the drawing-off of right front draft zone during this Item is tieed up, so that the total draft multiple for realizing that the first rove 22 of feeding and the second rove 23 are subject in drafting system is identical；The One ribbon and the second ribbon are constantly exported in the case where the rotation of front traction roller pair drives, and first through drafting system output is fine Dimension item and the second ribbon interact resultant yarn under the action of twisting the twist, according to the first ribbon and the second fiber of output The property of item, when the orientation for twisting the twist is that Z is twisted, the mechanism of interaction resultant yarn at this time includes four kinds, the first Be positioned at left side the first ribbon will be located at right side the second ribbon package resultant yarn, and the two in encapsulation process respectively into Row twisting effect；It is for second that the first ribbon positioned at left side is twisted first, is then located at second ribbon on right side again Looping resultant yarn, and the two respectively carries out twisting effect simultaneously in encapsulation process；The third is the first fiber positioned at left side Item and the second ribbon positioned at right side directly and close mutually winding resultant yarn, and during the winding process for positioned at the first fine of left side Item is tieed up by second ribbon on right side gradually looping, and the two respectively while carrying out twisting work during mutual winding With；4th kind is the respectively preliminary twisting first of the first ribbon positioned at left side and the second ribbon positioned at right side, then again Mutual winding resultant yarn, and be during the winding process the adding through preliminary by right side positioned at first ribbon through tentatively twisting in left side The the second ribbon gradually looping twisted；When the orientation for twisting the twist is that S is twisted, the mechanism packet of interaction resultant yarn at this time Four kinds are included, the first is will to be located at the second ribbon package resultant yarn in left side positioned at second ribbon on right side, and the two is being wrapped Twisting effect is respectively carried out during wrapping up in；It is for second that the second ribbon positioned at right side is twisted first, is then located at a left side again First ribbon looping resultant yarn of side, and the two respectively carries out twisting effect simultaneously in encapsulation process；The third is to be located at First ribbon in left side and positioned at right side the second ribbon directly and close mutually winding resultant yarn, and during the winding process be position In right side the second ribbon by first ribbon in left side gradually looping, and the two during mutual winding respectively together Shi Jinhang twisting effect；4th kind is that the first ribbon positioned at left side and the second ribbon positioned at right side respectively add first It twists, then mutual winding resultant yarn again, and is during the winding process the second ribbon through tentatively twisting positioned at right side by left side The gradually looping of the firstth ribbon through tentatively twisting.

But the drafting multiple for the front draft zone being subject to and the drafting multiple in first break draft area are same or different, lead forward and backward The Pullin performances stretched in area are different, including three kinds of situations, the first situation are the gear ratios and second of the first connection gear group 19 The product of the gear ratio of connection gear group 20 is equal to first break draft roller to the total draft multiple between front traction roller pair, also It is that the drafting multiple of left back draft area and the product of drafting multiple of right front draft zone are equal to total draft multiple, at this time the first rove After the drafting multiple of the 22 left back draft areas being subject in first break draft area is equal to the right side that the second rove 23 is subject in first break draft area The drafting multiple of the drafting multiple of draft area, the left front draft area that the first rove 22 is subject in front draft zone is equal to the second rove The drafting multiple of the 23 right front draft zones being subject in front draft zone, that is, the first rove 22 and the second rove 23 be subject to it is total Drafting multiple it is identical, and the drafting multiple for the front draft zone being subject to and the drafting multiple in first break draft area are also identical, to realize First rove 22 and the second rove 23 are in drafting system by identical drafting process；Second situation is the first connection The product of the gear ratio of gear set 19 and the gear ratio of the second connection gear group 20 be less than first break draft roller to and front traction roller Total draft multiple between, that is, the product of drafting multiple of drafting multiple and right front draft zone of left back draft area are less than Total draft multiple, the drafting multiple for the left back draft area that the first rove 22 is subject in first break draft area at this time is less than the second rove 23 The drafting multiple in the right first break draft area being subject in first break draft area, the left front draft area that the first rove 22 is subject in front draft zone Drafting multiple be greater than the drafting multiple of right front draft zone that the second rove 23 is subject in front draft zone, that is, the first rove 22 total drafting multiples for being subject to the second rove 23 are identical, but the drafting multiple for the front draft zone being subject to and first break draft area are led Multiple difference is stretched, to realize the first rove 22 and the second rove 23 in drafting system by different drafting process；Third Kind of situation is the product of the gear ratio of the first connection gear group 19 and the gear ratio of the second connection gear group 20 greater than first break draft sieve It draws to the total draft multiple between front traction roller pair, that is, the drafting multiple of left back draft area and leading for right front draft zone The product for stretching multiple is greater than total draft multiple, the drawing-off times for the left back draft area that the first rove 22 is subject in first break draft area at this time Number is greater than the drafting multiple in the right first break draft area that the second rove 23 is subject in first break draft area, and the first rove 22 is in front draft zone Drawing-off times of the drafting multiple for the left front draft area being subject to less than the right front draft zone that the second rove 23 is subject in front draft zone Number, that is, total drafting multiple that the first rove 22 and the second rove 23 are subject to are identical, but the drawing-off for the front draft zone being subject to Multiple is different with the drafting multiple in first break draft area, to realize the first rove 22 and the second rove 23 in drafting system by not Same drafting process.

Claims

1. a single-spindle dual-draft spinning device, characterized in that the device comprises a drafting system, and the drafting system comprises a pair of rear drafting rollers, a pair of middle drafting rollers, a pair of front drafting rollers, and a pair of rear drafting rollers Including the rear bottom roller (1) and the rear top rubber roller (2), the middle drafting roller pair includes the middle bottom roller (3) and the middle upper rubber roller (4), and the front drafting roller pair includes the front bottom roller (5) and Front upper rubber roller (6), rear lower roller (1), middle lower roller (3), front lower roller (5) all include roller shaft (7), rear lower roller for all positions on the front carriage of a spinning frame The roller shafts (7) of (1) are integrally and fixedly connected, the roller shafts (7) of the middle and bottom rollers (3) of all positions are integrally and fixedly connected, and the roller shafts (7) of the front bottom rollers (5) of all positions ) integrated fixed connection, the roller shafts (7) of the rear bottom rollers (1) of all the positions on the back table of a spinning frame are integrally fixedly connected, and the roller shafts (7) of the middle and bottom rollers (3) of all positions Integrated fixed connection, the roller shafts (7) of the front and bottom rollers (5) of all the spindle positions are integrated and fixedly connected, and a roller sleeve (8) is provided on the outer circumference of the roller shaft (7); the rollers of the middle and bottom rollers (3) The sleeve (8) is divided into a left roller sleeve (13) and a right roller sleeve (14), the left roller sleeve (13) and the roller shaft (7) are integrally and fixedly connected, and the right roller sleeve (14) and the roller shaft (7) pass through The first intermediate bearing (15) is slidably connected, the left end of the right roller sleeve (14) is fixedly connected with a driving sleeve (24), and the driving sleeve (24) is sleeved on the left roller sleeve (13) of the middle and lower rollers (3) and On the roller shaft (7) between the right roller sleeves (14), the right end of the driving sleeve (24) is fixedly connected with the left end of the right roller sleeve (14), and the left end of the driving sleeve (24) is connected with the left roller sleeve (13) ) to keep the space between the right ends of ), and drive the sleeve (24) to drively connect with the drive shaft (17) through the belt (16). The drive shafts (17) of all positions on the back table of the spinning frame are integrally connected, and the left and right ends of the drive shaft (17) are respectively fixed on the frame of the spinning frame through bearing connections. The roller shaft ( The right end of 7) is driven to rotate by the first motor (18), and the right end of the transmission shaft (17) is connected with the right end of the roller shaft (7) of the front lower roller (5) through the first connecting gear set (19), and the rear lower The right end of the roller shaft (7) of the roller (1) is driven to rotate by the second motor (21), and the right end of the roller shaft (7) of the middle and bottom rollers (3) passes through the right end of the roller shaft (7) of the rear front and bottom rollers. The second connecting gear set (20) is connected for transmission; the rear upper rubber roller (2), the middle upper rubber roller (4) and the front upper rubber roller (6) all include a rubber roller shaft (10); a rear car table of a spinning frame , An ingot position on the front car table and an adjacent ingot position on the right side form a position group, and the cots (10) of the rear upper cots (2) on the two positions of one position group are integrally connected. , The cot shaft (10) of the middle and upper cots (4) is integrally connected, and the cots shaft (10) of the front upper cot (6) is integrally connected, A rubber roller sleeve (9) is tightly sleeved on the outer circumference of the rubber roller shaft (10) of the rear upper rubber roller (2), the middle upper rubber roller (4) and the front upper rubber roller (6) of each spindle position, The lengths of the rubber roller sleeve (9) of the rear upper rubber roller (2) and the roller sleeve (8) of the rear lower roller (1) are the same and the left and right ends are aligned. The rubber roller sleeve (9) of the rear upper rubber roller (2) It is connected with the rubber roller shaft (10) of the rear upper rubber roller (2) through the second intermediate bearing, and the rubber roller sleeve (9) of the front upper rubber roller (6) and the roller sleeve (8) of the front lower roller (5) are connected. The lengths are the same and the left and right ends are aligned. The rubber roller sleeve (9) of the front upper rubber roller (6) is connected with the rubber roller shaft (10) of the front upper rubber roller (6) through the third intermediate bearing. The middle upper rubber roller (4) ) of the cot (9) is divided into a left cot (11) and a right cot (12), the left cot (11) of the middle upper cot (4) and the left cot of the middle bottom roller (3) The length of the roller sleeve (13) is the same and the left and right ends are aligned. The right rubber roller sleeve (12) of the middle upper rubber roller (4) and the right roller sleeve (14) of the middle lower roller (3) have the same length and the left and right ends are the same. Align, the left rubber roller sleeve (11) of the middle and upper rubber roller (4) is connected with the rubber roller shaft (10) of the middle and upper rubber roller (4) through the fourth intermediate bearing, and the right rubber roller of the middle and upper rubber roller (4) The sleeve (12) is connected with the cot shaft (10) of the middle and upper cots (4) through the fifth intermediate bearing; the rear cots (2) and the middle upper cots (4) of two positions in one set of positions , The rubber roller shaft (10) between the rubber roller sleeves (9) of the front upper rubber roller (6) is sequentially embedded in the rear, middle and front of the pressing assembly from the back to the front, so that The installation of the rear rubber roller (2), the middle upper rubber roller (4), and the front upper rubber roller (6) on the pressing assembly is realized, and the rear part of the pressing assembly is fixed on the bed surface of the spinning frame through the fixed shaft, And the pressing component rotates along the fixed axis, and the rear upper rubber roller (2), the middle upper rubber roller (4), and the front upper rubber roller (6) are pressed down under a certain pressure during the rotation process.

2 . The single-spindle dual-draft spinning device according to claim 1 , wherein the roller shaft ( 7 ) is a solid cylindrical structure. 3 .

3 . The single-spindle dual-draft spinning device according to claim 1 , wherein the roller shaft ( 7 ) and the roller sleeve ( 8 ) are made of the same material, and both are made of iron or steel. 4 .

4. The single-spindle dual-draft spinning device according to claim 1, wherein the left roller sleeve (13) and the right roller sleeve (14) have the same length, and there is a gap between them.

5. The single-spindle double-draft spinning device according to claim 1, wherein the material of the driving sleeve (24) is the same as the material of the right roller sleeve (14), and the driving sleeve (24) is both ends Open cylindrical hollow structure.

6. The single-spindle double-draft spinning device according to claim 1, wherein the transmission shaft (17) is a solid cylindrical structure.

7 . The single-spindle dual-draft spinning device according to claim 1 , wherein the rubber roller shaft ( 10 ) is made of iron and has a solid cylindrical structure. 8 .

8. The single-spindle double-draft spinning device according to claim 1, wherein the rubber roller cover (9) is made of rubber.

9. The spinning method of any one of the single-spindle double-draft spinning devices according to any one of claims 1-8, characterized in that, when in use, the pressing component rotates along the fixed axis under the action of a force, thereby realizing the pressing component press down, so that the rubber roller sleeve (9) of the rear upper rubber roller (2) of each position is in close pressing contact with the roller sleeve (8) of the rear lower roller (1). The left rubber roller sleeve (11) and the right rubber roller sleeve (12) are in close pressing contact with the left roller sleeve (13) and the right roller sleeve (14) of the middle and lower rollers (3) respectively, and the front upper rubber roller (6) The rubber roller cover (9) of the front bottom roller (5) is in close pressing contact with the roller cover (8) of the front bottom roller (5), and the first motor (18) drives the roller shaft (7) of the front bottom roller (5) to rotate, which in turn drives the The roller sleeve (8) of the front bottom roller (5), which is integrally and fixedly connected with the roller shaft (7) of the front bottom roller (5), rotates synchronously, and the roller sleeve (8) of the front bottom roller (5) rotates and drives the The roller sleeve (8) of the roller (5) tightly presses and contacts the rubber roller sleeve (9) of the front upper rubber roller (6) and rotates synchronously, and the roller shaft (7) of the front lower roller (5) rotates and then passes through the first connecting gear. The group (19) drives the transmission shaft (17) to rotate, and the transmission shaft (17) rotates and then drives the right roller sleeve (14) of the middle and bottom rollers (3) to rotate through the belt (16), and the right roller sleeve of the middle and lower rollers (3) rotates. (14) The rotation then drives the right rubber roller sleeve (14) of the middle and upper rubber roller (4), which is in close pressing contact with the right roller sleeve (14) of the middle and lower rollers (3), to rotate synchronously. A right front drafting area is formed between the pair of middle and right drafting rollers consisting of the right roller sleeve (14) of the middle bottom roller (3) and the right rubber roller sleeve (12) of the middle upper rubber roller (4). The drafting ratio of the drawing area is fixed and equal to the gear ratio of the first connecting gear set (19); the second motor (21) drives the roller shaft (7) of the rear bottom roller (1) to rotate, which in turn drives the rear bottom roller (1). The roller sleeve (8) of the rear bottom roller (1) is integrally and fixedly connected with the roller shaft (7) of the The roller sleeve (8) tightly presses and contacts the rubber roller sleeve (9) of the rear upper rubber roller (2) and rotates synchronously, and the roller shaft (7) of the rear lower roller (1) rotates and is driven by the second connecting gear set (20). The roller shaft (7) of the middle and bottom rollers (3) rotates, and the roller shaft (7) of the middle and bottom rollers (3) rotates to drive the middle and bottom rollers that are integrally and fixedly connected with the roller shaft (7) of the middle and bottom rollers (3). The left roller sleeve (13) of (3) rotates, and the left roller sleeve (13) of the middle and lower rollers (3) rotates to drive the middle and upper rubber rollers that are in close pressing contact with the left roller sleeve (13) of the middle and lower rollers (3). The left cot (11) of (4) rotates synchronously. At this time, the left cot (13) of the middle bottom roller (3) and the left cot of the middle upper cot (4) are rotated by the rear drafting roller pair. A left rear drafting area is formed between the middle and left drafting roller pairs formed by the sleeve (11), and the drafting ratio of the left rear drafting area is fixed and equal to the number of teeth of the second connecting gear set (20). At the same time, in the middle right drafting roller pair consisting of the rear drafting roller pair and the right roller sleeve (14) of the middle bottom roller (3) and the right rubber roller sleeve (12) of the middle upper rubber roller (4) The right rear drafting area is formed between, and the drafting multiple of the right rear drafting area is equal to the total drafting multiple between the rear drafting roller pair and the front drafting roller pair divided by the drafting multiple of the right front drafting area. The left front draft is formed between the front drafting roller pair and the middle-left drafting roller pair consisting of the left roller sleeve (13) of the middle bottom roller (3) and the left rubber roller sleeve (11) of the middle upper rubber roller (4). zone, the draft ratio of the left front draft zone is equal to the total draft ratio between the rear draft roller pair and the front draft roller pair divided by the draft ratio of the left rear draft zone; at the rear of the rear draft roller pair A feeding bell mouth device is installed. The feeding bell mouth device includes a left bell mouth and a right bell mouth. The left bell mouth and the right bell mouth are fixedly connected by connecting cross bars, and the space between them is reserved. The first roving (22) is fed into the drafting system from the left bell mouth, the second roving (23) is fed into the drafting system from the right bell mouth, and the fed first roving (22) is then fed by the roller sleeve ( 8) It is pressed and fed between the cots (9) of the rear upper cots (2), and then fed by the left roller sleeves (13) of the middle and lower rollers (3) and the left cots of the middle and upper cots (4). The output is pressed between the sleeves (11). During this process, the first roving (22) is subjected to the drafting action of the left rear drafting area to obtain the first fiber bundle, and then the first fiber bundle is pulled by the roller sleeve ( 8) Press output between the front upper cot (6) and the cot cover (9), during this process, the first fiber bundle is drawn by the left front drafting area to obtain the first fiber strip, and the fed second roving (23) Then it is pressed and fed between the roller sleeve (8) of the rear bottom roller (1) and the rubber roller sleeve (9) of the rear upper rubber roller (2), and then fed by the right roller sleeve of the middle bottom roller (3). (14) and the right cot (12) of the middle and upper cots (4) are pressed for output. During this process, the second roving (23) is drawn by the right rear drafting zone to obtain the second fiber bundle. The second fiber bundle is pressed and output by the roller sleeve (8) of the front lower roller (5) and the rubber roller sleeve (9) of the front upper rubber roller (6). During this process, the second fiber bundle is drawn by the right front drafting area. The second fiber sliver is obtained by stretching, so that the fed first roving (22) and the second roving (23) receive the same total draft multiple in the drafting system; the first fiber sliver and the second fiber sliver are in front Driven by the rotation of the drafting roller pair, it is continuously output. The first fiber sliver and the second fiber sliver output by the drafting system interact with each other to form yarn under the action of twisting twist. According to the output of the first fiber sliver and the second fiber sliver When the twist direction of the twist is Z twist, the interaction process of the yarn at this time includes four kinds, the first is that the first fiber strip on the left will be the second fiber strip on the right Wrapped into yarn, and both of them are twisted during the wrapping process; the second is that the first fiber strip on the left is twisted first, and then wrapped into yarn by the second fiber strip located on the right, and Both are twisted at the same time during the wrapping process; the third is located on the left The first fiber sliver on the side and the second fibrous sliver located on the right side are directly merged and intertwined to form a yarn, and during the winding process, the second fibrous sliver on the right side is gradually wrapped for the first fiber sliver located on the left side, and In the process of intertwining with each other, both of them are twisted at the same time; the fourth is that the first fiber strip on the left and the second fiber strip on the right are initially twisted respectively, and then entangled with each other to form a yarn. And during the winding process, the initially twisted first fiber strip on the left side is gradually wrapped around the right side of the preliminary twisted second fiber strip; when the twist direction of the twist degree is S twist, at this time There are four kinds of action processes of interaction and yarn formation. The first one is that the second fiber strip located on the right wraps the second fiber strip located on the left side into yarn, and both of them perform twisting in the wrapping process; The second is that the second fiber strip on the right is first twisted, and then wrapped into yarn by the first fiber strip located on the left, and both are twisted simultaneously during the wrapping process; the third The first fiber strip located on the left side and the second fiber strip located on the right side are directly merged and intertwined to form a yarn, and during the winding process, the first fiber strip located on the left side is gradually wrapped for the second fiber strip located on the right side. In the process of intertwining, both of them are twisted at the same time; the fourth is that the first fiber strip on the left and the second fiber strip on the right are twisted separately, and then intertwined to form a yarn, and the first pre-twisted fiber strip on the left side is gradually wrapped for the second pre-twisted fiber strip on the right side during the winding process.

10. The spinning method of a single-spindle double-draft spinning device according to claim 9, wherein the received draft multiple of the front draft zone and the draft multiple of the rear draft zone are the same or different, and the The draft distribution in the front and rear drafting areas is different, including three cases, the first case is that the product of the gear ratio of the first connecting gear set (19) and the gear ratio of the second connecting gear set (20) is equal to the rear The total draft ratio between the drafting roller pair and the front drafting roller pair, that is, the product of the drafting ratio of the left rear drafting zone and the drafting ratio of the right front drafting zone is equal to the total drafting ratio. The drafting ratio of the left rear drafting zone received by the roving (22) in the rear drafting zone is equal to the drafting ratio of the right rear drafting zone received by the second roving (23) in the rear drafting zone, and the first roving ( 22) The drafting multiple of the left front drafting zone received in the front drafting zone is equal to the drafting multiple of the right front drafting zone received by the second roving (23) in the front drafting zone, that is, the first roving (22) The total drafting ratio received by the second roving (23) is the same, and the drafting ratio of the front drafting zone and the drafting ratio of the rear drafting zone are also the same, so as to realize the first roving (22) and the second drafting ratio. The roving (23) is subjected to exactly the same drafting process within the drafting system; the second case is that the product of the gear ratio of the first connecting gear set (19) and the gear ratio of the second connecting gear set (20) is smaller than the back draft The total draft ratio between the pair of drafting rollers and the pair of front drafting rollers, that is, the product of the draft ratio of the left rear drafting zone and the drafting ratio of the right front drafting zone is less than the total draft ratio. At this time, the first roving (22) The drafting ratio of the left rear drafting zone received in the rear drafting zone is less than the drafting ratio of the right rear drafting zone received by the second roving (23) in the rear drafting zone, and the first roving (22) ) the draft multiple of the left front drafting area received in the front drafting area is greater than the drafting multiple of the right front drafting area received by the second roving (23) in the front drafting area, that is, the first roving (22) and The second roving (23) receives the same total drafting ratio, but receives different drafting ratios in the front drafting area and rear drafting area, so as to realize the first roving (22) and the second roving (23). 23) Subject to different drafting processes in the drafting system; the third case is that the product of the gear ratio of the first connecting gear set (19) and the gear ratio of the second connecting gear set (20) is greater than the pair of rear drafting rollers and the total draft ratio between the pair of front drafting rollers, that is, the product of the draft ratio of the left rear draft zone and the draft ratio of the right front draft zone is greater than the total draft ratio. At this time, the first roving (22) The drafting ratio of the left rear drafting zone received in the rear drafting zone is greater than the drafting ratio of the right rear drafting zone received by the second roving (23) in the rear drafting zone, and the first roving (22) is in the front The drafting ratio of the left front drafting zone received in the drafting zone is less than the drafting ratio of the right front drafting zone received by the second roving (23) in the front drafting zone, that is, the first roving (22) and the second roving. (23) The total drafting ratio received is the same, but the drafting ratio of the front drafting zone and the drafting ratio of the rear drafting zone are different, so as to realize the first roving (22) and the second roving ( 23) Subject to different drafting processes within the drafting system.