CN102465364A - Draft roller, draft device, and spinning machine - Google Patents
Draft roller, draft device, and spinning machine Download PDFInfo
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- CN102465364A CN102465364A CN2011103291170A CN201110329117A CN102465364A CN 102465364 A CN102465364 A CN 102465364A CN 2011103291170 A CN2011103291170 A CN 2011103291170A CN 201110329117 A CN201110329117 A CN 201110329117A CN 102465364 A CN102465364 A CN 102465364A
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- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01H—SPINNING OR TWISTING
- D01H5/00—Drafting machines or arrangements ; Threading of roving into drafting machine
- D01H5/18—Drafting machines or arrangements without fallers or like pinned bars
- D01H5/70—Constructional features of drafting elements
- D01H5/74—Rollers or roller bearings
- D01H5/78—Rollers or roller bearings with flutes or other integral surface characteristics
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Abstract
A top front roller (20) includes a fiber-contacting portion (30) formed with a substantially uniform diameter and adapted to make a fiber bundle to contact with an outer peripheral surface thereof, and a reduced-diameter portion (31) having a diameter shorter than the fiber-contacting portion (30) at both ends of the fiber-contacting portion in an axial direction. A total width of the fiber-contacting portion (30) and the reduced-diameter portion (31) in the axial direction is 30 mm or longer and 34 mm or shorter, and a width of the fiber-contacting portion (30) in the axial direction is less than 18 mm.
Description
Technical field
The present invention relates generally to the shape of the drawing rollers that drafting system possesses.
Background technology
After spinning machine utilizes drafting system with fibre bundle (sliver) drawing-off (fibre bundle is stretched), utilize spinning apparatus that this fibre bundle twisting is become spun yarn.This drafting system possesses a plurality of drawing rollers, drives each drawing rollers through by drawing rollers fibre bundle clamping (sandwiching) also being rotated, thereby with this fibre bundle drawing-off.
In recent years, owing to utilize the spinning high speed of spinning apparatus, thus the rotary speed of the drawing rollers that drafting system possessed also accelerates.If the rotary speed of drawing rollers accelerates, then become big the flowing of the surperficial related flow air of these drawing rollers (below, be called and follow air-flow (associated air current)).At present, pointed out following problem, because this follows air-flow, the fiber of fibre bundle is spread, thereby the uniformity of the spun yarn of processing (evenness) descends.
Japanese kokai publication hei 7-126926 communique (below, be called " patent documentation 1 ") disclose with two ends excise on a large scale, with the front upper roller of effective roller narrowed width to the half the drafting system that is near the mark (top rollers that are disposed at downstream in the drawing rollers).Thus, in the patent documentation 1, even fibre bundle can not receive the influence of following air-flow yet under the situation that front upper roller rotates at a high speed, flyings (fluff: fine hair) can not disperse towards both sides basically from the place ahead of front upper roller.
TOHKEMY 2005-113274 communique (below; Be called " patent documentation 2 ") following drafting system disclosed; End constituting between the right roller of roller is provided with the gap that forms air flue; What this gap made the rotation that is accompanied by roller follows the air communication mistake, and makes and saidly follow air-flow to become to form the air-flow that prevents wall, prevents that wherein wall from stoping the diffusion of drafted and the fibre bundle seen off.
The size of each parts and shape are of crucial importance in fibre machinery, and for example the difference of the small shape of drawing rollers brings the situation of influence significantly much to yarn qualities.This is because the fiber of formation fibre bundle is very thin and light, thereby the drawing rollers small variation of following air-flow nearby can make the disperse state of fiber produce bigger variation.Because how the size and the shape of drawing rollers are set with a plurality of selections, be one of technical task thereby the size and the shape that improve known drawing rollers improve yarn qualities.
But, in above-mentioned patent documentation 1, only to have put down in writing effective roller narrowed width of front upper roller half thely to what be near the mark, which kind of degree not record " near half the " is, in whether also unclear just in time half the situation is included in.Like this, though size is extremely important aspect the drawing rollers making, also effective roller width of not clear and definite " half that is near the mark " is the size that comprises the scope of which kind of degree in the record of patent documentation 1.Therefore, as the those skilled in the art that want to make front upper roller based on the record of patent documentation 1, the size of " the effective roller width after the excision two ends is 18mm " put down in writing in can only the reference implementation example.
On the other hand, between those skilled in the art, be known under the situation of the not enough 18mm of effective roller width of front upper roller of drafting system, the fiber of fibre bundle exposes from effective roller width easily, thereby quality of yarn is unstable.Certainly, since in fact fiber whether expose from effective roller width of front upper roller be because draw conditions and different cannot treat different things as the same.But,, can under most condition, prevent exposing of fiber if effective roller width of front upper roller is more than the 18mm.That is, effectively the roller width is that the above front upper roller of 18mm can be called as the high front upper roller of versatility.Therefore, to should be more than the 18mm be nearest those skilled in the art's technological general knowledge to effective roller width of front upper roller.Patent documentation 1 and patent documentation 2 have been contacted even have those skilled in the art of this technology general knowledge; Also only will consider and effective roller width of front upper roller is made as 18mm gets final product as the embodiment record, and do not expect the situation that for example effective roller width is made as not enough 18mm.
, the certainty of measurement of measuring instrument prosperity recently and yarn qualities has also improved, and consequently, can correctly estimate the influence of the shape of drawing rollers to yarn qualities.In such a trend; The result that the application inventor etc. are devoted to study has repeatedly understood; In the spinning machine that possesses the drafting system that to have adopted effective roller width be the front upper roller more than the 18mm; Under the situation that the yarn to thick (coarse yarn count) spins, can obtain the effect that yarn qualities improves really, may not necessarily undesirably improve yarn qualities but prop up centering under the situation that the yarn of (medium yarn count), ramuscule (fine yarn count) spins.That is, the experiment prompting through the application inventor etc. as follows, effectively the roller width is the above front upper roller of 18mm for carrying out the shape that drawing-off may not be an optimum in order to obtain than the fibre bundle of thick thin yarn (in or the yarn of ramuscule).
This aspect in patent documentation 1 or patent documentation 2, not have the idea of the size and dimension of the relevant optimization front upper rollers such as number (thickness) according to yarn of record or prompting.The certainty of measurement of the application yarn qualities at that time of patent documentation 1 or patent documentation 2 is not high now, owing to pay attention to the versatility of drawing rollers, thus lack the necessity of using the front upper roller of effective roller width beyond 18mm.
Yet recently, the certainty of measurement of yarn qualities has improved as described above, consequently, compares at that time to become with the application of patent documentation 1 or patent documentation 2 and further is strict with quality of yarn.Therefore judge, compare that the drawing rollers that provide number (thickness) according to yarn to optimize meet demand with general drawing rollers.
Summary of the invention
The present invention produces in view of the above fact, its main purpose provide concerning be used for or the drawing-off of the fibre bundle of the yarn of ramuscule optimum drawing rollers.
Next the problem that will solve of the present invention describes mechanism and its effect that is used to solve this problem as stated.
According to first viewpoint of the present invention, the drawing rollers of drafting system have: the fiber contact site, and the diameter of this fiber contact site forms roughly certain, and fibre bundle is contacted with the outer peripheral face of this fiber contact site; And reducing diameter part, at the axial both ends of said fiber contact site, the diameter of this reducing diameter part forms littler than the diameter of said fiber contact site.The axial width that said fiber contact site and said reducing diameter part are combined together is below the above 34mm of 30mm.The axial width of said fiber contact site is not enough 18mm.
Like this, through form reducing diameter part at the both ends of fiber contact site, can bleed off the rotation of following drawing rollers and produce follow air-flow, therefore can suppress the diffusion of fibre bundle.Be made as not enough 18mm through width with the fiber contact site, can be when the narrow width of the fibre bundle of drawing-off when drawn fiber bundle (in order to obtain and) than a thick thin yarn, reduce and follow the influence of air-flow, thereby can improve yarn qualities.
According to second viewpoint of the present invention, drafting system possesses: said drawing rollers and opposed roller, this opposed roller and said drawing rollers arranged opposite, and and the said fiber contact site of said drawing rollers between the gripping fibers bundle.The axial width of said fiber contact site is wide at the width of the fibre bundle of the scope internal ratio below the above 11mm of 7mm under the state that is held between said fiber contact site and the said opposed roller.
Like this, more than needed through leaving for the width of fiber contact site with respect to the width of the fibre bundle that is held, can prevent that fiber from exposing from the fiber contact site.If with respect to the width of the fibre bundle that is held, the width of fiber contact site is wide, thereby then follow the big fibre bundle of influence change of air-flow to spread easily.Through the width of fiber contact site the more than needed of width with respect to fibre bundle is located in the said scope, can suppress the situation of fibre bundle because of following air-flow to spread.As stated, determine the width of the fiber contact site of drawing rollers, optimum drafting system can be provided through width according to drafted fibre bundle.
Said drafting system is preferably, and as follows with this fibre bundle drawing-off, that is, making the width that between said fiber contact site and said opposed roller, is held the fibre bundle of state is below the 7mm.
Drawing rollers of the present invention are being suitable in the drawing-off than the fibre bundle of thick thin yarn (in or the yarn of ramuscule) in order to obtain.Therefore, drafting system is below the 7mm (in, be equivalent to the roughly yarn of 30 (Ne30)) through making width by the fibre bundle of the state of this drawing rollers clamping, can carry out the drawing-off of fibre bundle with especially good quality.
In said drafting system, preferred said drawing rollers are front upper roller.
Front upper roller is disposed at the downstream of the transport direction of fibre bundle in the roller that possesses at drafting system, because with the highest speed rotation, thereby follow the influence of air-flow also maximum.Therefore, through in this front upper roller, adopting drawing rollers of the present invention, can bring into play the most significantly and bleed off the effect of following air-flow and suppressing the diffusion of fiber.
According to the 3rd viewpoint of the present invention, spinning machine has a plurality of spinning units, and this spinning unit possesses: said drafting system and will be by said drafting system drawing-off the fibre bundle spinning and process the spinning apparatus of spun yarn.
Drafting system of the present invention especially be used for or the drawing-off of the fibre bundle of the yarn of ramuscule in be suitable for.Therefore, according to the spinning machine of said formation, can improve by spinning apparatus process in or the quality of the spun yarn of ramuscule.
In said spinning machine, preferred said spinning apparatus is an open end spinning apparatus.
Because open end spinning apparatus can carry out high-speed spinning, drawing rollers are rotation at a high speed also, often follows the influence of air-flow also to become big.The said traction roller of the present invention of following air-flow can be bled off through adopting, the effect of the quality that improves spun yarn can be brought into play significantly at said spinning machine.
In said spinning machine, preferred said spinning apparatus possesses: nozzle carrier; Hollow guiding axis body; And fiber guide portion, this fiber guide portion in being formed at the spinning room of said nozzle carrier and said hollow guiding between the axis body to the fibre bundle channeling conduct.
In the open end spinning apparatus of the precision of the state that requires to be imported into the fibre bundle in the spinning room, the fibre bundle that has been pulled through said draw-gear is imported into stable status by fiber guide portion.Therefore, spinning machine can be processed stay-in-grade spun yarn.
Description of drawings
Fig. 1 is the front view of formation of the integral body of the related fine spining machine of expression an embodiment of the invention.
Fig. 2 is the side view of spinning unit.
Fig. 3 is the profile of spinning apparatus.
Fig. 4 is the right stereogram of front roller.
Fig. 5 is the right vertical view of front roller.
Fig. 6 is the result's of the clamping width that is illustrated in the right fibre bundle of the front roller yarn qualities of measuring the spun yarn after the spinning during for 6mm figure.
Fig. 7 is the result's of the clamping width that is illustrated in the right fibre bundle of the front roller yarn qualities of measuring the spun yarn after the spinning during for 10mm figure.
The specific embodiment
Next, the fine spining machine related to an embodiment of the invention (spinning machine) describes with reference to accompanying drawing.Fine spining machine 1 as spinning machine shown in Figure 1 possesses a plurality of spindles (spinning unit 2) that are set up in parallel.Fine spining machine 1 possesses joint chassis (yarn joining cart) 3, gettering container 80 and power cabinet (motor box) 5.
As shown in Figure 1, each spinning unit 2 main composition is to possess from the upper reaches towards downstream according to drafting system 7, spinning apparatus 9, thread tension device (yarn slack eliminating device) and the coiler device (winding device) 13 of following arranged in order." upper reaches " and " downstream " meaning is the upper reaches and the downstream at the moving direction of the fibre bundle in when spinning and spun yarn in this manual.Each spinning unit 2 will utilize spinning apparatus 9 to spin and process spun yarn 10 from the fibre bundle 8 that drafting system 7 is sent here, this spun yarn 10 is utilized coiler device 13 to reel and forms package 45.
Drafting system 7 is set at the basket (housing: housing) near 6 the upper end of fine spining machine 1.Drafting system 7 will be from the width of figure sliver case slightly via fibre bundle (sliver) 8 drawing-offs (fibre bundle is stretched) to the regulation of guide strip rack supply.Drafted device 7 drawing-offs fibre bundle 8 be supplied to spinning apparatus 9.
9 pairs of fibre bundle 8 twisting of supplying with from drafting system 7 of spinning apparatus, thus spun yarn 10 processed.In this embodiment, adopted the Spindleless spinning machine that utilizes the revolution air-flow to give fibre bundle 8 sth. made by twisting power.As shown in Figure 3, spinning apparatus 9 mainly possesses nozzle carrier 34, hollow guiding axis body 23 and fibre guide spare (fiber guide portion) 22.
Between nozzle carrier 34 and hollow guiding axis body 23, be formed with spinning room 26.At the air nozzle (air injecting nozzle) 27 that is formed with ejection air in spinning room 26 on the nozzle carrier 34.Be formed with the yarn introducing port (yarn introducing opening) 21 that in spinning room 26, imports fibre bundle 8 on the fibre guide spare 22.Air nozzle 27 constitutes and can in spinning room 26, spray air and produce the revolution air-flow.In this constituted, the fibre guide spare 22 that the fibre bundle of supplying with from drafting system 78 is had yarn introducing port 21 guided in spinning room 26.In spinning room 26, fibre bundle 8 is waved around hollow guiding axis body 23 through utilizing the revolution air-flow and is rotated, thereby is formed spun yarn 10 by twisting.The yarn path (yarn passage) 29 at the axle center of the spun yarn 10 of having been twisted through being formed at hollow guiding axis body 23, and see off to the outside of yarn device 9 from the yarn outlet (yarn outlet) (figure slightly) in downstream.
Dispose the sley point 22a of the needle-like that its front end disposes in spinning room at said yarn introducing port 21.The fibre bundle 8 that imports from yarn introducing port 21 is rolled up in this sley point 22a to be gone up and is directed in the spinning room 26.Thus, can make the in stable condition of the fibre bundle 8 that is fed in the spinning room 26.Owing to guide fibre bundle 8 with the mode of being rolled up on sley point 22a like this,, can prevent that also sth. made by twisting power is to more leaning on the upstream side conduction than fibre guide part 22 even fiber is twisted in spinning room 26.Thus, can prevent to influence drafting system 7 based on the twisting of spinning apparatus 9.
Be provided with storage yarn feeding device 12 in the downstream of spinning apparatus 9.As shown in Figure 2, storage yarn feeding device 12 possesses the storage leno and draws (yarn accumulating roller) 14 and this storage leno of rotation driving to draw 14 electro-motor 25.
The storage leno draws 14 can a certain amount of spun yarn 10 circumvolutions also be stored temporarily at its outer peripheral face.Through to draw 14 outer peripheral face circumvolution to have the state of spun yarn 10 to make this storage leno draw 14 at the storage leno, can spun yarn 10 be spun and side conveying downstream from spinning apparatus 9 with the speed of regulation with the predetermined rotational speed rotation.
Said coiler device 13 possesses reel 72 and reciprocating traverse device 75.Reel 72 can twine spun yarn 10 with said bobbin 48 or on this bobbin 48 and the outer peripheral face of the package 45 that forms contacts and drives.Reciprocating traverse device 75 has the traverse of thread guide 76 that can engage with spun yarn 10.Make traverse of thread guide 76 reciprocating motions and utilization figure electrical motor driven reel 72 slightly through utilization figure driving mechanism slightly, make package 45 rotations that contacts with reel 72, thereby on one side one side with the package 45 of reeling of spun yarn 10 reciprocating traverses.
Like Fig. 1 and shown in Figure 2, joint chassis 3 has splicer (piecing devices) 43, inhales continuous pipe 44 and inhales continuous mouthful 46.If produce broken string (yarn breakage) or cut yarn (yarn cut) at certain spinning unit 2, then joint chassis 3 moves to this spinning unit 2 and stops on guide rail 41.The continuous pipe 44 of said suction is that rotate at above-below direction at the center with the axle on one side, will from line end that spinning apparatus 9 see suck and catch and to splicer 43 guiding on one side.Continuous mouthful 46 one side of suction is that rotate at above-below direction at the center with the axle, will from the line end of the package 45 of by said coiler device 13 being supported attract and catch and to splicer 43 guide on one side.The line end that splicer 43 is directed joint to each other.
Position between spinning apparatus 9 and the storage yarn feeding device 12 is provided with yarn clearer 52.Before being reeled, pass through said yarn clearer 52 by spinning apparatus 9 spun spun yarns 10 by storage yarn feeding device 12.The spun yarn 10 that yarn clearer 52 utilization figure sensor monitoring slightly moves under the situation that detects the yarn defect of spun yarn 10 (thickness of yarn etc. has the foreign matter that contains in unusual place or the yarn), sends yarn defect detection signal to not shown cell controller.
Said cell controller if receive said yarn defect detection signal, then cuts off spun yarn 10 with cutter 57 immediately, drafting system 7, spinning apparatus 9 etc. is stopped, and the coiling in the coiler device 13 is stopped.Cell controller transmits control signal to joint chassis 3, makes it to move to before this spinning unit 2.Joint chassis 3 utilizes suction silk floss pipe 44 and inhales continuous mouth 46 line end of spinning apparatus 9 sides and the line end of package 45 sides are guided to splicer 43, and in this splicer 43, carries out the joint action.Through above joint action, can the place of yarn defect be removed, and begin the coiling of spun yarn 10 once more to package 45.In addition, also can constitute and omit cutter 57, the driving with drafting system 7 under the state of the driving of proceeding coiler device 13 stops, and cuts off spun yarn 10 with the mode of tearing off thus.
Next, counter extensioin device 7 at length describes.
Drafting system 7 possesses a plurality of drawing rollers.Each drawing rollers is one group with two, and to constitute drawing rollers right.It is right that the drafting system 7 of this embodiment possesses four drawing rollers that dispose according to following order successively from upstream side; Promptly; The rear roller that constitutes by drawing rollers 16 and 66 to, the 3rd roller that constitutes by drawing rollers 17 and 67 to, the middle roller that constitutes by drawing rollers 19 and 69 to and to constitute front roller by drawing rollers 20 and 70 right, it constitutes as so-called four-wire type drafting system.The 3rd roller pair and middle roller between dispose the condenser 28 of the width that is used to limit fibre bundle.
Each drawing rollers centering, the drawing rollers of the face side of fine spining machine 1 are called top roller, the drawing rollers of the rear side of fine spining machine 1 are called bottom roll.Top roller in turn has back top roller 16, the 3rd top roller 17, frame to adorn the middle top roller 19 and the front upper roller 20 of tengential belt 18 from upstream side.Bottom roll in turn has back bottom roll 66, the 3rd bottom roll 67, frame to adorn the middle bottom roller 69 and the preceding bottom roll (opposed roller) 70 of tengential belt 68 from upstream side.
Each top roller the 16,17,19, the 20th, the roller that constitutes by elastomeric elements such as rubber of outer peripheral face separately.Each top roller 16,17,19,20 is via figure bearing slightly etc., and being supported to axis separately is that the center rotates freely.Each bottom roll the 66,67,69, the 70th, metal roller through figure drive source slightly, is that the center is driven in rotation with axis separately.Each drawing rollers centering, top roller and bottom roll dispose opposed to each other.Drafting system 7 has each top roller 16,17,19,20 towards bottom roll 66,67,69,70 opposed with it and the not shown force application mechanism (urging means) of the application of force.Thus, the outer peripheral face of top roller 16,17,19,20 flexibly contacts the outer peripheral face of bottom roll 66,67,69,70.Drive bottom roll 66,67,69,70 through rotation, and top roller 16,17,19, the 20 also driven rotations that contact opposed with bottom roll 66,67,69,70.
Drafting system 7 is through top roller 16,17,19,20 and bottom roll 66,67,69, clamping between 70 (sandwiching) fibre bundle 8 in rotation, with this fibre bundle 8 side conveyance downstream.In drafting system 7, constitute and lean on the drawing rollers in downstream fast more more its rotary speed.Therefore, fibre bundle 8 drawing rollers pair and drawing rollers between be stretched (drafted) during by conveyance, together everywhere, the width of side fibre bundle 8 becomes thin more more downstream.Rotary speed through setting each bottom roll 66,67,69,70 aptly and based on fiber Max. Clearance _M. of condenser 28 etc. can change the drafted degree of fibre bundle 8.Therefore, drafting system 7 can be supplied to spinning apparatus 9 with drafted fibre bundle 8 for the width of hoping.Thus, in spinning apparatus 9, can the spun yarn 10 of the number (thickness) of hope be spinned.
As stated, owing in drafting system 7, lean on the drawing rollers in downstream that its rotary speed is become fast more more, thereby be the fastest as the right right rotary speed of front roller of drawing rollers in downstream.Therefore, front roller right nearby produce follow air-flow strong, thereby this follows air-flow also big to the influence of yarn qualities.In the drafting system 7 of this embodiment,, be formed with reducing diameter part 31 at front upper roller 20 for the right said influence of following air-flow that nearby produces of the front roller that is reduced in rotation at a high speed.
Below, the formation of front upper roller 20 is at length described.Like Fig. 4 and shown in Figure 5; Front upper roller 20 has and forms roughly certain columned fiber contact site of diameter 30 and reducing diameter part 31; Wherein at the axial both ends of this fiber contact site 30, reducing diameter part 31 forms and fiber contact site 30 little cylindric of diameter group mutually.
The outer peripheral face contact of the fiber contact site 30 of front upper roller 20 and the outer peripheral face of the preceding bottom roll 70 of these front upper roller 20 arranged opposite.Thus, as shown in Figure 5, constitute gripping fibers bundle 8 between fiber contact site 30 and preceding bottom roll 70.On the other hand, between reducing diameter part 31 and preceding bottom roll 70, be formed with the gap.
Next, the air-flow of following that nearby produces at the front upper roller 20 that constitutes is as stated described.As stated, front upper roller 20 is driven in rotation and driven rotation through bottom roll 70 before on the other side.Therefore, front upper roller 20 and preceding bottom roll 70 mutual counter-rotatings.Thereby as shown in Figure 4, follow air-flow 90 and the air-flow 91 of following that is produced by the rotation of preceding bottom roll 70 that are produced by the rotation of front upper roller 20 become mutual opposed air-flow, and conflict near the right inlet of front roller, producing of fibre bundle 8.
The conflict follow air- flow 90 and 91 become the edge direction parallel with the roller shaft of front upper roller 20 and preceding bottom roll 70 (below; Only be called axially) airflow flowing; And towards the axial end portion of front upper roller 20 and preceding bottom roll 70 mobile (that is, flowing diffusely outwardly).If the said axial end portion of following air- flow 90 and 91 to arrive fiber contact site 30, then through the gap of formation between reducing diameter part 31 and preceding bottom roll 70, the edge direction parallel with the moving direction of fibre bundle 8 flows.The flowing of air- flow 90 and 91 of following of flowing like this, vertically can be run away via the gap that between reducing diameter part 31 and preceding bottom roll 70, forms.Consequently, the mobile of air- flow 90 and 91 of following that flows vertically dies down, thus can suppress the fiber of fibre bundle 8 because follow air- flow 90 and 91 and to axle along situation about spreading.
In the past, the shape of considering reducing diameter part 31 in the aforesaid control of following air- flow 90 and 91 is important.For example, in patent documentation 2, record width how to set reducing diameter part, the optimums such as shape in gap.For example, in TOHKEMY 2010-163702, record the shape of reducing diameter part has been carried out the various examples of studying intensively.On the other hand, do not pay attention to very much the shape and the size of fiber contact site 30.This is because exist the width of fiber contact site 30 to should be the above technological general knowledge of 18mm, and thinks that not the leeway that the size of this fiber contact site 30 and shape etc. are studied intensively also is a reason.
But; As stated; The result that the application inventor etc. study repeatedly can learn clearly at the axial width that possesses fiber contact site 30 and be made as in the spinning machine of the front upper roller in the past 20 more than the 18mm; In spinning or during the yarn of ramuscule, can not obtain the effect that sufficient yarn qualities improves.The influence that the application inventor etc. bring to yarn qualities for the shape of investigating fiber contact site 30, the experiment below having carried out.
Making such as the application inventor with the roller shaft of fiber contact site 30 to width be made as the front upper roller 20 of 18mm, 17mm, 16mm, in the fine spining machine 1 that has adopted each front upper roller 20, carried out the experiment of spinning spun yarn 10.The result of the yarn qualities of the spun yarn of processing at this moment 10 has been measured in expression among Fig. 6.Wherein, A1 that puts down in writing among Fig. 6 and A2 are the yarn defects of having been classified through known classimat (Classimat) classification.In Fig. 6, put down in writing the quantity of the yarn defect that every 100km of spun yarn 10 separately is detected.The quantity of detected yarn defect is few more, can be described as the high more spun yarn of quality 10.When having carried out the experiment of Fig. 6, the width of the fibre bundle 8 of the state that fiber contact site 30 is sandwiched is about 6mm.This is the fiber width that is equivalent to about 30 spun yarn 10.Usually, the yarn in 30 conducts.
As shown in Figure 6, the situation that is made as 18mm with width with fiber contact site 30 is compared, and the yarn defect under the situation that is made as 17mm, 16mm (especially classimat A1) reduces.Particularly be made as under the 16mm situation, can see that the effect of the yarn defect minimizing of sening as an envoy to is remarkable at width with fiber contact site 30.Like this, the roller shaft through adopting fiber contact site 30 to the front upper roller 20 of the not enough 18mm of width (for example 17mm or 16mm), the quality of the spun yarn 10 in confirming to improve.Can know with respect in spun yarn 10, the front upper roller 20 that the width of fiber contact site 30 is made as 16mm is especially effective.
As stated, in the past, owing to think if the not enough 18mm of the width of fiber contact site 30 then is easy to generate exposing of fiber, so do not use the drawing-off top roller of the not enough 18mm of width of fiber contact site 30.Yet the not enough 18mm of the width of fiber contact site 30 now, can know the following situation that exists: even also can not produce exposing of fiber, and can access the effect that yarn qualities improves.That is, through the application inventor's etc. experiment, the first clear and definite possibility that the width of fiber contact site 30 is made as front upper roller 20 practicability of not enough 18mm.
The application inventors etc. are result of experiment repeatedly further, finds that the width of non-clamping part (non-nipping portion) is important for the shape optimization with front upper roller 20.Here, so-called non-clamping part refers to the part that in fiber contact site 30, does not have gripping fibers bundle 8.As shown in Figure 5, will be made as SW by the width of the fibre bundle 8 of the state of fiber contact site 30 clampings, the axial width of fiber contact site 30 is made as W1.And non-clamping part 32 that will form more in the outer part at the width both ends than fibre bundle 8 and 33 axial width are made as W2 and W3 respectively.Like this,, thereby only mention in this manual under the situation of " width of non-clamping part " etc., refer to the non-clamping part 32 at both ends and the total W2+W3 of 33 width because non-clamping part 32 and 33 is formed at the both ends of fibre bundle 8.
Below, to by inventor etc. clear and definite the importance of width of non-clamping part explain simply.The width W 2+W3 of so-called non-clamping part is wide to be meant by the fibre bundle 8 of fiber contact site 30 clampings and the situation of reducing diameter part 31 in axial separation.Reducing diameter part 31 is followed air- flow 90 and 91 and form in order to bleed off.Therefore, excessive if fibre bundle 8 separates with reducing diameter part 31, then can not bleed off fibre bundle 8 nearby follow air-flow 90 and 91.Therefore, can think, cause fibre bundle 8 to become and spread easily because this follows air-flow 90 and 91.So through to a certain degree the width W 2+W3 of non-clamping part being narrowed down, fibre bundle 8 air- flow 90 and 91 of following nearby is easy to run away via reducing diameter part 31, thereby fibre bundle 8 is difficult for diffusion, and the raising yarn qualities.But, if the width W 2+W3 of the non-clamping part that excessively narrows down thinks that then fibre bundle 8 exposes from fiber contact site 30 easily, can reduce yarn qualities on the contrary.
Experimental result as shown in Figure 6 is that the width S W of fibre bundle 8 is the situation of 6mm.Therefore, be made as under the situation of 18mm in the width W 1 with the fiber contact site 30 of front upper roller 20, the width W 2+W3 of non-clamping part is 12mm.Be made as under the situation of 17mm in the width W 1 with fiber contact site 30, the width W 2+W3 of non-clamping part is 11mm.Be made as under the situation of 16mm in the width W 1 with fiber contact site 30, the width W 2+W3 of non-clamping part is 10mm.If experimental result from point of view Fig. 6 of the width of non-clamping part; Then can know; Compare when width with non-clamping part is made as 12mm, yarn qualities improves when the width with non-clamping part is made as 11mm, and yarn quality especially improves when the width with non-clamping part is made as 10mm.That is, be under the situation below the 17mm in the width W 1 of the fiber contact site 30 of front upper roller 20, yarn qualities improves.
In addition, shown in Figure 6 is that the width S W of fibre bundle 8 is the situation of 6mm.But result of experiment such as the application inventor etc. repeatedly are to confirm that if the width S W of this fibre bundle is below the 7mm, then being made as through the width with non-clamping part can the raising yarn qualities below the 11mm.
On the other hand; For the width S W of fibre bundle 8 situation thicker (thick yarn than 7mm; The situation of SW=8mm for example), have and in front upper roller of the present invention (width W 1 of fiber contact site 30 is the front upper roller of not enough 18mm), be easy to generate the exposing of fiber, situation that yarn qualities reduces.Therefore, front upper roller 20 of the present invention is applicable to that the width S W of fibre bundle 8 is the situation (than a thick thin yarn, in promptly being equivalent to or the yarn of ramuscule) below the 7mm.In addition, for the width S W of fibre bundle 8 situation thicker (situation of the yarn that spinning is thick), use front upper roller (width W 1 of fiber contact site 30 is the above front upper rollers of 18mm) in the past to get final product than 7mm.
The application inventors etc. are for the relation between the width W 2+W3 that exposes difficulty and non-clamping part that investigates fiber, and the width S W of fibre bundle 8 is made as the experiment that 10mm has carried out spinning spun yarn 10.Its result is as shown in Figure 7.On ground as this experiment the width S W of fibre bundle 8 is made as under the situation of 10mm, (because width S W is thicker than 7mm) has and in front upper roller 20 of the present invention, is easy to generate the exposing of fiber, situation that yarn qualities worsens.Therefore, the relation between the deterioration situation (yarn defect quantity) through observing the yarn qualities in this experiment and the width W 2+W3 of non-clamping part, the relation between can the width W 2+W3 that expose difficulty and non-clamping part of clear and definite fiber.If observe the experimental result of Fig. 7 from this viewpoint; Then can know; Be that the quantity of yarn defect is fewer under the situation of 7mm, 8mm at the width W 2+W3 of non-clamping part, and be that the quantity of yarn defect (especially classimat A2) increases under the situation of 6mm at the width W 2+W3 of non-clamping part.From this experimental result, can think that at the width W 2+W3 of non-clamping part be under the situation of 6mm, the fiber of fibre bundle 8 exposes from fiber contact site 30 easily.Therefore be judged as,, then can prevent exposing of fiber if the width W 2+W3 of non-clamping part is made as more than the 7mm.
In sum; In the scope of width W 2+W3 below the above 11mm of 7mm as if the non-clamping part that makes front upper roller 20; Can prevent that then fibre bundle 8 from exposing from fiber contact site 30, and this fibre bundle 8 is difficult to consequently can improve yarn qualities because of following air- flow 90 and 91 to spread.That is, be made as in the scope shown in following, can access the spun yarn 10 of good quality through width W 1 with fiber contact site 30:
SW+7mm≤W1≤SW+11mm
At the width S W during with fibre bundle 8 clampings, decide by the setting (rotary speed that each drawing rollers is right etc.) of drafting system 7 by the fiber contact site 30 of front upper roller 20.In the fine spining machine 1 of this embodiment, prepared the different front upper roller 20 of a plurality of width W that makes fiber contact site 30 1, suitably use to coupling front upper roller 20 with the width S W of the fibre bundle of setting by drafting system 78.In view of the above, be preferably, even under the situation of said setting change, also can the width W 1 of fiber contact site 30 be accommodated in the above-mentioned scope.Though in the above-described embodiment in the spinning the situation (the width S W of fibre bundle 8 is the situation of 6mm specifically) of yarn is illustrated, even be to spin also can serve the same role under the situation of yarn of ramuscule at the front upper roller 20 of this embodiment.That is, if the width S W of fibre bundle 8 is (for example, SW=7mm, 6mm, 5mm, 4mm, 3mm, 2mm etc.) below the 7mm, the front upper roller 20 of this embodiment also can be brought into play the effect that improves yarn qualities.
Because the surface of top roller is the elastomeric element of rubber etc., so can be because use produce wearing and tearing.Like this, top roller is easily-consumed products, thereby constitutes and can change at drafting system 7 middle top rollers.Therefore, change front upper roller 20 according to the setting of drafting system 7 easily.
In addition,, then can cause roller crooked, the uneven worry of clamping is arranged if the width W 4 of front upper roller 20 integral body (fiber contact site 30 and reducing diameter part 31 and axial width together) is wide.On the other hand, if the width W 4 of front upper roller 20 integral body is narrow, then the width of reducing diameter part 31 can not fully be obtained, and bleeds off the effect of following air- flow 90 and 91 thereby can not give full play to.On aspect this, according to the application inventor's etc. experiment, can confirm, if front upper roller 20 whole width W 4 are made as in the scope below the above 34mm of 30mm, then can not have problems especially.Therefore, in the front upper roller 20 of this embodiment, the width W 4 that roller is whole is made as below the above 34mm of 30mm.In addition, Fig. 6 and experimental result shown in Figure 7 are to use the experimental result that whole width W 4 is carried out for the front upper roller 20 of 32mm.
As stated, the front upper roller 20 of this embodiment has: fiber contact site 30, and the diameter of this fiber contact site 30 forms roughly certain, and fibre bundle 8 is contacted with its outer peripheral face; And reducing diameter part 31, at the axial both ends of fiber contact site 30, the diameter of this reducing diameter part 31 forms littler than the diameter of fiber contact site 30.The axial width W 4 that fiber contact site 30 and reducing diameter part 31 are lumped together is below the above 34mm of 30mm.The axial width W 1 of fiber contact site 30 is not enough 18mm.
Like this, through form reducing diameter part 31 at the both ends of fiber contact site 30, can bleed off the rotation of following front upper roller 20 and produce follow air- flow 90 and 91, thereby can suppress the diffusion of fibre bundle 8.Be made as not enough 18mm through width, under the situation of the narrow width of the fibre bundle 8 of drawing-off (in order obtaining and the situation of drawn fiber bundle 8), can reduce the influence of following air-flow, thereby can improve yarn qualities than a thick thin yarn with fiber contact site 30.
The drafting system 7 of this embodiment possesses described front upper roller 20 and preceding bottom roll 70, wherein before bottom roll 70 and these front upper roller 20 arranged opposite, and between the fiber contact site 30 of this preceding bottom roll 70 and this front upper roller 20 gripping fibers bundle 8.Axial width W 1 width of fiber contact site 30 is held the width S W of fibre bundle 8 of state between this fiber contact site 30 and preceding bottom roll 70 in the scope internal ratio below the above 11mm of 7mm wide.
Like this, it is more than needed to leave for the width W 1 of fiber contact site 30 through the width S W with respect to the fibre bundle that is held 8, can prevent that fiber from exposing from fiber contact site 30.If with respect to the width of the fibre bundle that is held 8, the width of fiber contact site 30 is wide, the influence of then following air- flow 90 and 91 becomes greatly and fibre bundle 8 spreads easily.Through the width W 1 of fiber contact site 30 (that is, the width of non-clamping part) more than needed with respect to the width S W of fibre bundle 8 is located in the above-mentioned scope, can suppress fibre bundle 8 and spread because of following air-flow.As stated, determine the width W 1 of the fiber contact site 30 of front upper roller 20, optimum drafting system 7 can be provided through width according to drafted fibre bundle 8.
The drafting system 7 of this embodiment is preferably, and as follows with these fibre bundle 8 drawing-offs, that is, the width S W that will between fiber contact site 30 and preceding bottom roll 70, be held the fibre bundle 8 of state is made as below the 7mm.
The front upper roller 20 of this embodiment is suitable in the drawing-off that is used for than the fibre bundle 8 of thick the thin yarn yarn of ramuscule (or).Therefore, through being made as by the width S W of the fibre bundle 8 of the state of these front upper roller 20 clampings below the 7mm (in, be equivalent to roughly 30 yarn), can carry out the drawing-off of fibre bundle 8 with good especially quality.
Front upper roller 20 is disposed at the downstream of the transport direction of fibre bundle 8 in the roller that possesses at drafting system 7, because with the highest speed rotation, thus also maximum of the influence of following air-flow 90 and 91.Therefore, through adopting drawing rollers of the present invention, can bring into play bleeding off the effect of following air- flow 90 and 91 to suppress the diffusion of fiber the most significantly at this front upper roller 20.
The fine spining machine 1 of this embodiment has a plurality of spinning units 2, and this spinning unit 2 possesses described drafting system 7; And will be by these drafting system 7 drawing-offs fibre bundle 8 spinning and process the spinning apparatus 9 of spun yarn 10.
The drafting system 7 of this embodiment especially be used for or the drawing-off of the fibre bundle 8 of the yarn of ramuscule in be suitable for.Therefore, according to the fine spining machine 1 of above-mentioned formation, can improve by spinning apparatus 9 process in or the quality of the spun yarn 10 of ramuscule.
In the fine spining machine 1 of this embodiment, spinning apparatus 9 is open end spinning apparatus.
Because open end spinning apparatus can carry out high-speed spinning, drawing rollers are rotation at a high speed also, often follows the influence of air- flow 90 and 91 also to become big.The said drawing rollers of the present invention of following air- flow 90 and 91 can be bled off through adopting, the effect of the quality that improves spun yarn 10 can be brought into play significantly.
In the fine spining machine 1 of this embodiment, spinning apparatus 9 possesses: nozzle carrier 34; Hollow guiding axis body 23; And fibre guide spare 22, this fibre guide spare 22 in being formed at the spinning room 26 of nozzle carrier 34 and hollow guiding between the axis body 23 to fibre bundle 8 channeling conducts.
In the open end spinning apparatus of the precision of the state that requires to be imported into the fibre bundle 8 in the spinning room 26, fibre bundle 8 is imported into stable status through fibre guide spare 22.Consequently, fine spining machine 1 can be processed stay-in-grade spun yarn 10.
More than the preferred embodiment of the present invention is illustrated, but the change of described formation below for example can having.
The present invention also can be applicable in the drafting system of spinning machine (for example ring spinner) of other kinds.
In said embodiment, fine spining machine 1 draws 14 circumvolution spun yarn 10 on every side through the storage leno in rotation, and spun yarn 10 is spun from spinning apparatus 9.The delivery roller and the clamping roller that also can replace storing up yarn feeding device 12 and rotation is set are through being spun spun yarn 10 by this delivery roller and clamping roller clamping spun yarn 10 from spinning apparatus 9.In this case, configuration storage leno draws 14 in the downstream of delivery roller and clamping roller, and the spun yarn 10 of generation is loosening in the time of also can being absorbed in the work of coiling work or joint.
Also can omit the sley point 22a of the needle-like that fibre guide spare 22 possessed.In this case, also can utilize the edge of the end of downstream side of fibre guide spare 22 to realize the function of above-mentioned sley point 22a.
The shape of reducing diameter part 31 is not limited to cylindric shown in Fig. 4 and Fig. 5 etc., also can be for example as TOHKEMY 2010-163702 is disclosed form inclined plane shape or curved surface shape.
In said embodiment, though the formation that drawing rollers of the present invention is applied to front upper roller is illustrated, be not limited thereto, also can formation of the present invention be applied to preceding bottom roll.It is right to be not limited to front roller, also can use formation of the present invention in other the drawing rollers.
Claims (7)
1. drawing rollers, it is the drawing rollers of drafting system, said drawing rollers are characterised in that to have:
The fiber contact site, the diameter of this fiber contact site forms roughly certain, and fibre bundle is contacted with the outer peripheral face of this fiber contact site; And
Reducing diameter part, at the axial both ends of said fiber contact site, the diameter of this reducing diameter part forms littler than the diameter of said fiber contact site,
The axial width that said fiber contact site and said reducing diameter part are lumped together is below the above 34mm of 30mm,
The axial width of said fiber contact site is not enough 18mm.
2. a drafting system is characterized in that,
Possess:
The described drawing rollers of claim 1; And
Opposed roller, this opposed roller and said drawing rollers arranged opposite, and between the said fiber contact site of this opposed roller and these drawing rollers the gripping fibers bundle,
The axial width of said fiber contact site is held the width of fibre bundle of state between said fiber contact site and said opposed roller in the scope internal ratio below the above 11mm of 7mm wide.
3. drafting system according to claim 2 is characterized in that,
With the fibre bundle drawing-off, that is, making the width that between said fiber contact site and said opposed roller, is held the fibre bundle of state is below the 7mm as follows.
4. according to claim 2 or 3 described drafting systems, it is characterized in that,
Said drawing rollers are front upper roller.
5. a spinning machine is characterized in that,
Have a plurality of spinning units, this spinning unit possesses:
Each described drafting system in the claim 2 to 4; And
Will be by this drafting system drawing-off the fibre bundle spinning and process the spinning apparatus of spun yarn.
6. spinning machine according to claim 5 is characterized in that,
Said spinning apparatus is an open end spinning apparatus.
7. spinning machine according to claim 6 is characterized in that,
Said spinning apparatus possesses: nozzle carrier; Hollow guiding axis body; And fiber guide portion, this fiber guide portion in being formed at the spinning room of said nozzle carrier and said hollow guiding between the axis body to the fibre bundle channeling conduct.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2010258249A JP2012107363A (en) | 2010-11-18 | 2010-11-18 | Draft roller, draft machine and spinning machine |
| JP2010-258249 | 2010-11-18 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102465364A true CN102465364A (en) | 2012-05-23 |
| CN102465364B CN102465364B (en) | 2016-06-29 |
Family
ID=44759471
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110329117.0A Active CN102465364B (en) | 2010-11-18 | 2011-10-24 | Drawing rollers, drafting system and spinning machine |
| CN 201120414027 Withdrawn - After Issue CN202658310U (en) | 2010-11-18 | 2011-10-24 | Drafting roller, drafting device and spinning machine |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201120414027 Withdrawn - After Issue CN202658310U (en) | 2010-11-18 | 2011-10-24 | Drafting roller, drafting device and spinning machine |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP2455518B1 (en) |
| JP (1) | JP2012107363A (en) |
| CN (2) | CN102465364B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104562318A (en) * | 2013-10-23 | 2015-04-29 | 村田机械株式会社 | Drafting device and spinning machine |
| CN104562317A (en) * | 2013-10-23 | 2015-04-29 | 索若德国两合股份有限公司 | Drawing frame for air spinning device |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6188271B2 (en) | 2011-06-30 | 2017-08-30 | 村田機械株式会社 | Draft roller, method of spinning using the same, spinning unit, and spinning machine |
| DE102012023985A1 (en) * | 2012-12-07 | 2014-06-12 | Saurer Germany Gmbh & Co. Kg | Air spinning device |
| CN103741280A (en) * | 2014-01-06 | 2014-04-23 | 马建辉 | Drawing frame |
| JP2017002431A (en) * | 2015-06-11 | 2017-01-05 | 村田機械株式会社 | Spinning machine and spinning method |
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| CN104562318A (en) * | 2013-10-23 | 2015-04-29 | 村田机械株式会社 | Drafting device and spinning machine |
| CN104562317A (en) * | 2013-10-23 | 2015-04-29 | 索若德国两合股份有限公司 | Drawing frame for air spinning device |
| CN104562317B (en) * | 2013-10-23 | 2017-04-26 | 索若德国两合股份有限公司 | Drawing frame for air spinning device |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN202658310U (en) | 2013-01-09 |
| CN102465364B (en) | 2016-06-29 |
| EP2455518A3 (en) | 2015-04-22 |
| EP2455518A2 (en) | 2012-05-23 |
| EP2455518B1 (en) | 2018-09-05 |
| JP2012107363A (en) | 2012-06-07 |
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