CN102465364B - Drawing rollers, drafting system and spinning machine - Google Patents
Drawing rollers, drafting system and spinning machine Download PDFInfo
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- CN102465364B CN102465364B CN201110329117.0A CN201110329117A CN102465364B CN 102465364 B CN102465364 B CN 102465364B CN 201110329117 A CN201110329117 A CN 201110329117A CN 102465364 B CN102465364 B CN 102465364B
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- width
- contacts portion
- fiber contacts
- fibre bundle
- drafting system
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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
Abstract
The present invention provides drawing rollers, drafting system and spinning machine.Front upper roller has: fiber contacts portion, and the diameter in this fiber contacts portion is shaped generally as necessarily, and makes fibre bundle contact with the outer peripheral face in this fiber contacts portion；And reducing diameter part, at the axial both ends in fiber contacts portion, the diameter of this reducing diameter part is formed as less than the diameter in fiber contacts portion.The axial width being combined in fiber contacts portion and reducing diameter part is more than 30mm below 34mm.The axial width in fiber contacts portion is less than 18mm.
Description
Technical field
The invention mainly relates to the shape of the drawing rollers that drafting system possesses.
Background technology
Spinning machine utilizes drafting system by after fibre bundle (sliver) drawing-off (being stretched by fibre bundle), utilizes spinning apparatus that the twisting of this fibre bundle is become spun yarn.This drafting system possesses multiple drawing rollers, by by fibre bundle clamping (sandwiching) and being rotated each drawing rollers of driving by drawing rollers, thus by this fibre bundle drawing-off.
In recent years, owing to utilizing the spinning high speed of spinning apparatus, thus the rotary speed of drawing rollers that drafting system possesses also accelerates.If the rotary speed of drawing rollers accelerates, then become big in the flowing (hereinafter referred to as with air-flow (associatedaircurrent)) of the air of the related flowing in the surface of these drawing rollers.At present, it is indicated that problems with, owing to this is with air-flow, the fiber of fibre bundle is spread, thus the uniformity of the spun yarn made (evenness) declines.
Japanese Unexamined Patent Publication 7-126926 publication (hereinafter referred to as " patent documentation 1 ") disclose two ends are excised on a large scale, by the front upper roller (top rollers being configured at most downstream side in drawing rollers) of effective roller narrowed width to the drafting system of the half being near the mark.Thus, in patent documentation 1, even if fibre bundle is without being subject to the impact with air-flow when front upper roller high speed rotating, flyings (fluff: fine hair) disperse towards both sides essentially without from the front of front upper roller.
Japanese Unexamined Patent Publication 2005-113274 publication is (following, it is called " patent documentation 2 ") disclose following drafting system, the gap forming air flue it is provided with in the end constituted between the roller of roller pair, this gap makes the adjoint air-flow of the rotation along with roller pass through, and make described becoming with air-flow form the air-flow preventing wall, wherein prevent wall from stoping the diffusion of fibre bundle that is drafted and that send.
In fibre machinery, the dimension and shape of each parts is of crucial importance, for instance the difference of the small shape of drawing rollers brings situation about affecting significantly much to yarn qualities.This is very thin and light owing to constituting the fiber of fibre bundle, thus the disperse state that the small change of the adjoint air-flow near drawing rollers can make fiber produces large change.Owing to how the dimension and shape of drawing rollers is set with multiple selection, thus the dimension and shape improveing known drawing rollers is one of technical task to improve yarn qualities.
But, only describe effective roller narrowed width of front upper roller to the half being near the mark in above-mentioned patent documentation 1, it does not have which kind of degree records " close to half " is, also whether the situation of unclear just half is included.Like this, although be extremely important making size in drawing rollers, but the effective roller width also without clearly " half being near the mark " in the record of patent documentation 1 is the size of the scope comprising which kind of degree.Accordingly, as wanting that the record based on patent documentation 1 makes those skilled in the art of front upper roller, the size of " the effective roller width after excision two ends is 18mm " that can only record in reference example.
Patent documentation 2 is the invention of the height and the width focusing on stage portion, importance about effective roller width is silent on or points out, and the example as the width (the effective roller width described in patent documentation 1) of the clamping part of front upper roller is merely disclosed as 18mm (Fig. 7).Patent documentation 2 is silent on or points out the length how setting effective roller width could improve the quality of yarn.Therefore, if as the those skilled in the art having seen this patent documentation 2, focus on and how to optimize stage portion, optimize effective roller width without there being leeway to consider.
On the other hand, between those skilled in the art, when being known in effective roller short of width 18mm of front upper roller of drafting system, the fiber of fibre bundle easily exposes from effective roller width, thus the quality of yarn is unstable.Certainly, owing to whether actually fiber exposes different due to draw conditions from effective roller width of front upper roller, it is impossible to lump together.But, if effective roller width of front upper roller is more than 18mm, it is possible to prevent exposing of fiber under most condition.That is, effective roller width is that the front upper roller of more than 18mm can be referred to as the front upper roller that versatility is high.Therefore, effective roller width of front upper roller should be 18mm and is above the technology general knowledge of nearest those skilled in the art.Even if the those skilled in the art with this technology general knowledge contact patent documentation 1 and patent documentation 2, also it is set to 18mm only considering to record effective roller width of front upper roller such as embodiment, without expecting such as effective roller width being set to the situation less than 18mm.
, flourishing and yarn qualities the certainty of measurement of the recently measured instrument also improves, as a result of which it is, the shape impact on yarn qualities of drawing rollers can correctly be evaluated.In such a trend, it is clear that present inventors etc. are devoted to the result of research repeatedly, in the spinning machine possessing the drafting system that have employed the front upper roller that effective roller width is more than 18mm, can really obtain the effect that yarn qualities improves when the yarn of thick (coarseyarncount) is spinned, but prop up (mediumyarncount) in centering, the yarn of ramuscule (fineyarncount) may not necessarily undesirably improve yarn qualities when spinning.That is, pointing out as follows by the experiment of present inventor etc., effective roller width is that the front upper roller of more than 18mm is for carrying out drawing-off than the fibre bundle of thick thin yarn (in or the yarn of ramuscule) be not necessarily optimum shape to obtain.
This aspect, in patent documentation 1 or patent documentation 2, it does not have record or point out the idea of the size and dimension optimizing front upper roller about the number (thickness) according to yarn etc..The certainty of measurement of the application of patent documentation 1 or patent documentation 2 yarn qualities at that time is now not high, owing to paying attention to the versatility of drawing rollers, thus lacking the necessity using effective roller width front upper roller beyond 18mm.
But, recently, the certainty of measurement of yarn qualities improves as described above, as a result of which it is, become further to be strict with the quality of yarn compared with the application at that time of patent documentation 1 or patent documentation 2.Therefore judge, compared with general drawing rollers, it is provided that the drawing rollers optimized according to the number (thickness) of yarn are consistent with demand.
Summary of the invention
The present invention in view of above true and produce, its main purpose be to provide for in or the optimum drawing rollers of the drawing-off of fibre bundle of yarn of ramuscule.
Next the problem to solve of the present invention as it has been described above, illustrate with its effect the mechanism for solving this problem.
The first viewpoint according to the present invention, the drawing rollers of drafting system have: fiber contacts portion, and the diameter in this fiber contacts portion is shaped generally as necessarily, and make fibre bundle contact with the outer peripheral face in this fiber contacts portion；And reducing diameter part, at the axial both ends in described fiber contacts portion, the diameter of this reducing diameter part is formed as less than the diameter in described fiber contacts portion.The axial width being combined together in described fiber contacts portion and described reducing diameter part is more than 30mm below 34mm.The axial width in described fiber contacts portion is less than 18mm.
Like this, reducing diameter part is formed by the both ends in fiber contacts portion, it is possible to bleed off adjoint the air-flow produced with the rotation of drawing rollers, therefore, it is possible to the diffusion of suppression fibre bundle.By the width in fiber contacts portion is set to less than 18mm, it is possible to when the narrow width of the fibre bundle of drawing-off (during in order to obtain the drawn fiber bundle than thick thin yarn), reduce the impact with air-flow such that it is able to improve yarn qualities.
The second viewpoint according to the present invention, drafting system possesses: described drawing rollers and opposed roller, and this opposed roller and described drawing rollers are arranged opposite, and between the described fiber contacts portion of described drawing rollers gripping fibers bundle.The width width of the axial width in the described fiber contacts portion fibre bundle when the scope internal ratio of more than 7mm below 11mm is held between described fiber contacts portion with described opposed roller.
So, by leaving more than needed relative to the width of held fibre bundle to the width in fiber contacts portion, it is possible to prevent fiber from exposing from fiber contacts portion.If relative to the width of held fibre bundle, the width in fiber contacts portion is wide, then become big thus fibre bundle easily spreads with the impact of air-flow.By the width in fiber contacts portion is located in described scope relative to the more than needed of the width of fibre bundle, it is possible to suppress the fibre bundle situation because spreading with air-flow.As it has been described above, determined the width in the fiber contacts portion of drawing rollers by the width according to drafted fibre bundle, using the teaching of the invention it is possible to provide optimum drafting system.
Described drafting system is preferably, as follows by this fibre bundle drawing-off, i.e. making the width of the fibre bundle of held state between described fiber contacts portion with described opposed roller is below 7mm.
The drawing rollers of the present invention are suitable in the drawing-off of the fibre bundle in order to obtain the yarn thinner than thick (in or the yarn of ramuscule).Therefore, drafting system by make the width of fibre bundle of the state clamped by these drawing rollers be 7mm (in, be equivalent to the yarn of substantially 30 (Ne30)) below, it is possible to carry out the drawing-off of fibre bundle with especially good quality.
In described drafting system, it is preferable that described drawing rollers are front upper roller.
Front upper roller is configured in the roller that drafting system possesses the most downstream side of the transport direction of fibre bundle, owing to rotating with the highest speed, thus the impact with air-flow is also maximum.Therefore, by adopting the drawing rollers of the present invention in this front upper roller, it is possible to play the most significantly and bleed off the effect suppressing the diffusion of fiber with air-flow.
The 3rd viewpoint according to the present invention, spinning machine has multiple spinning unit, and this spinning unit possesses: described drafting system and the fibre bundle spinning by described drafting system drawing-off is made the spinning apparatus of spun yarn.
The drafting system of the present invention is especially suitable in being used for or in the drawing-off of the fibre bundle of the yarn of ramuscule.Therefore, the spinning machine according to described composition, it is possible to increase in being made up of spinning apparatus or the quality of the spun yarn of ramuscule.
In described spinning machine, it is preferable that described spinning apparatus is open end spinning apparatus.
Owing to open end spinning apparatus can carry out high-speed spinning, drawing rollers are high speed rotating also, often also becomes big with the impact of air-flow.By adopting the traction roller that can bleed off the described present invention with air-flow at described spinning machine, it is possible to play the effect of the quality improving spun yarn significantly.
In described spinning machine, it is preferable that described spinning apparatus possesses: nozzle carrier；Hollow guiding axis body；And fiber guide portion, fibre bundle is guided by this fiber guide portion in the spinning room being formed between described nozzle carrier and described hollow guiding axis body.
In the open end spinning apparatus of the precision of the state of the fibre bundle requiring to be imported in spinning room, the fibre bundle drawn by described traction apparatus is imported into stable state by fiber guide portion.Therefore, spinning machine can make stay-in-grade spun yarn.
Accompanying drawing explanation
Fig. 1 indicates that the front view being integrally formed of the spinning frame involved by 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 axonometric chart of front roller pair.
Fig. 5 is the top view of front roller pair.
Fig. 6 indicates that the figure of the result of the yarn qualities of the spun yarn measure spinning when the gripping width of the fibre bundle of front roller pair is 6mm after.
Fig. 7 indicates that the figure of the result of the yarn qualities of the spun yarn measure spinning when the gripping width of the fibre bundle of front roller pair is 10mm after.
Detailed description of the invention
It follows that to the spinning frame (spinning machine) involved by an embodiment of the invention, will make reference to explanation.The spinning frame 1 as spinning machine shown in Fig. 1 possesses the multiple spindles (spinning unit 2) being set up in parallel.Spinning frame 1 possesses adapter trolley (yarnjoiningcart) 3, gettering container 80 and power cabinet (motorbox) 5.
As it is shown in figure 1, each spinning unit 2 main composition is possess the drafting system 7, spinning apparatus 9, thread tension device (yarnslackeliminatingdevice) and the coiler device (windingdevice) 13 that configure in the following order from upstream towards downstream." upstream " and " downstream " is meant to upstream and the downstream of the moving direction of the fibre bundle when spinning and spun yarn in this manual.Each spinning unit 2, utilizes spinning apparatus 9 to carry out spinning the fibre bundle 8 sent here from drafting system 7 and makes spun yarn 10, utilizes coiler device 13 to wind on this spun yarn 10 and forms package 45.
Drafting system 7 is arranged near the upper end of basket (housing: housing) 6 of spinning frame 1.The width that fibre bundle (sliver) 8 drawing-off (being stretched by fibre bundle) supplied via guide strip rack from the figure sliver case omited extremely is specified by drafting system 7.The fibre bundle 8 of drafted device 7 drawing-off is supplied to spinning apparatus 9.
The fibre bundle 8 supplied from drafting system 7 is twisted by spinning apparatus 9, thus making spun yarn 10.In the present embodiment, have employed utilization revolution air-flow and give the Spindleless spinning machine that fibre bundle 8 twists with the fingers power.As it is shown on figure 3, spinning apparatus 9 mainly possesses nozzle carrier 34, hollow guiding axis body 23 and fibre guide part (fiber guide portion) 22.
Lead at nozzle carrier 34 and hollow and be formed with spinning room 26 between axis body 23.Nozzle carrier 34 is formed the air nozzle (airinjectingnozzle) 27 spraying air in oriented spinning room 26.Fibre guide part 22 is formed the yarn introducing port (yarnintroducingopening) 21 importing fibre bundle 8 in oriented spinning room 26.Air nozzle 27 is configured in spinning room 26 to spray air and produce revolution air-flow.In this composition, guided in spinning room 26 from the fibre bundle 8 of drafting system 7 supply by the fibre guide part 22 with yarn introducing port 21.In spinning room 26, fibre bundle 8 is by utilizing revolution air-flow to wave around hollow leads axis body 23 and rotate, thus being twisted and forming spun yarn 10.The spun yarn 10 being twisted is by being formed at the yarn path (yarnpassage) 29 at the axle center of hollow guiding axis body 23, and the yarn outlet (yarnoutlet) (figure is slightly) of side downstream is sent to the outside of yarn device 9.
It is configured with its front end towards the sley point 22a of the needle-like of configuration in spinning room at described yarn introducing port 21.The fibre bundle 8 imported from yarn introducing port 21 is rolled up in this sley point 22a and is directed in spinning room 26.Thereby, it is possible to the fibre bundle 8 making to be fed in spinning room 26 is in stable condition.Owing to guiding fibre bundle 8 in the way of being rolled up on sley point 22a like this, even if fiber is twisted in spinning room 26, it is also possible to prevent sth. made by twisting power from conducting to than fibre guide part 22 upstream side.Thereby, it is possible to prevent from affecting drafting system 7 based on the twisting of spinning apparatus 9.
The downstream of spinning apparatus 9 is provided with yarn storage device 12.As in figure 2 it is shown, yarn storage device 12 possesses yarn storage roller (yarnaccumulatingroller) 14 and rotates the electro-motor 25 driving this yarn storage roller 14.
Yarn storage roller 14 and can store the circumvolution of a certain amount of spun yarn 10 at its outer peripheral face temporarily.By having the state of spun yarn 10 to make this yarn storage roller 14 rotate with the rotary speed of regulation with the outer peripheral face circumvolution at yarn storage roller 14, it is possible to the speed of regulation, spun yarn 10 is spun from spinning apparatus 9 and downstream side conveying.
Coiler device 13 possess be supported to can around fulcrum 73 swing spool stand rocking arm 71.The bobbin 48 being used for winding spun yarn 10 can be rotatably supported by spool stand rocking arm 71.
Described coiler device 13 possesses reel 72 and reciprocating traverse device 75.Reel 72 can contact with the outer peripheral face of described bobbin 48 or the package 45 being wound around spun yarn 10 on this bobbin 48 and being formed and drive.Reciprocating traverse device 75 has the traverse of thread guide 76 that can engage with spun yarn 10.Make traverse of thread guide 76 move back and forth by the utilization figure driving mechanism omited and utilization figure electrical motor driven reel 72 slightly, make the package 45 contacted with reel 72 rotate, thus by spun yarn 10 reciprocating traverse wound package 45 on one side.
As shown in Figures 1 and 2, adapter trolley 3 has splicer (piecing devices) 43, inhales continuous pipe 44 and inhale continuous mouth 46.If producing broken string (yarnbreakage) at certain spinning unit 2 or cutting yarn (yarncut), then adapter trolley 3 is mobile on guide rail 41 stops to this spinning unit 2.The line end sent from spinning apparatus 9, while rotating at above-below direction centered by axle, is sucked and catches and guide to splicer 43 by the continuous pipe 44 of described suction.Inhaling continuous mouth 46 while rotating at above-below direction centered by axle, the line end from the package 45 supported by described coiler device 13 being attracted and catches and guide to splicer 43.Splicer 43 carries out directed line end joint to each other.
Position between spinning apparatus 9 and yarn storage device 12 is provided with yarn clearer 52.Before being wound by yarn storage device 12, described yarn clearer 52 is passed through by the spun spun yarn of spinning apparatus 9 10.The spun yarn 10 that yarn clearer 52 utilization figure sensor monitoring slightly moves, when yarn defect (thickness of yarn etc. have the foreign body contained in abnormal place or yarn) of spun yarn 10 being detected, yarn defect is detected signal and sends to not shown cell controller.
Described cell controller, if receiving described yarn defect detection signal, then cuts off spun yarn 10 with cutter 57 immediately, makes drafting system 7, spinning apparatus 9 etc. stop further, and also make the winding in coiler device 13 stop.Cell controller sends control signal to adapter trolley 3, so as to mobile to before this spinning unit 2.Adapter trolley 3 utilizes to inhale continuous pipe 44 and inhale continuous mouth 46 and is guided to splicer 43 by the line end of the line end of spinning apparatus 9 side Yu package 45 side, and carries out joint action in this splicer 43.By above joint action, it is possible to by the local removal of yarn defect, and start again at the spun yarn 10 winding to package 45.Alternatively, it is also possible to be configured to omit cutter 57, when proceeding the driving of coiler device 13, the driving of drafting system 7 stopped, in the way of tearing off, thus cut off spun yarn 10.
It follows that counter extensioin device 7 is described in detail.
Drafting system 7 possesses multiple drawing rollers.Each drawing rollers are constituted drawing rollers pair with two for one group.The drafting system 7 of present embodiment possesses four drawing rollers pair configured successively from upstream side according to following order, namely, the rear roller being made up of drawing rollers 16 and 66 to, the 3rd roller that is made up of drawing rollers 17 and 67 to, the middle roller that is made up of drawing rollers 19 and 69 to and constituted front roller pair by drawing rollers 20 and 70, it is constituted as so-called four-wire type drafting system.The 3rd roller pair and middle roller between be configured with the condenser 28 of width for limiting fibre bundle.
In each drawing rollers centering, the drawing rollers of the face side of spinning frame 1 are called top roller, the drawing rollers of the rear side of spinning frame 1 are called bottom roll.Top roller in turn has rear top roller the 16, the 3rd top roller 17, frame to fill middle top roller 19 and the front upper roller 20 of tengential belt 18 from upstream side.Bottom roll in turn has rear bottom roll the 66, the 3rd bottom roll 67, frame to fill middle bottom roller 69 and the front bottom roll (opposed roller) 70 of tengential belt 68 from upstream side.
Each top roller 16,17,19,20 is the roller that respective outer peripheral face is made up of elastomeric elements such as rubber.Each top roller 16,17,19,20, via the figure bearing etc. omited, is supported to and rotates freely centered by respective axis.Each bottom roll 66,67,69,70 is metal roller, by scheming drive source slightly, is driven in rotation centered by respective axis.In each drawing rollers centering, top roller and bottom roll are opposed to configuration.Drafting system 7 has the not shown force application mechanism (urgingmeans) that each top roller 16,17,19,20 is exerted a force towards the bottom roll 66,67,69,70 opposed with it.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.Bottom roll 66,67,69,70 is driven, and top roller 16,17,19, the 20 also driven rotation that contact opposed with bottom roll 66,67,69,70 by rotating.
This fibre bundle 8 downstream side, by clamping (sandwiching) fibre bundle 8 between the top roller 16,17,19,20 and the bottom roll 66,67,69,70 that rotate, is transported by drafting system 7.In drafting system 7, the drawing rollers being configured to more downstream are more fast to its rotary speed.Therefore, fibre bundle 8 drawing rollers pair and drawing rollers between period of being transported be stretched (drafted), concomitantly, more downstream the width of side fibre bundle 8 becomes more thin.By setting the rotary speed of each bottom roll 66,67,69,70 aptly and based on the fiber Max. Clearance _M. etc. of condenser 28, it is possible to change the degree that fibre bundle 8 is drafted.Therefore, the drafted fibre bundle 8 for desired width can be supplied to spinning apparatus 9 by drafting system 7.Thus, in spinning apparatus 9, it is possible to the spun yarn 10 of desired number (thickness) is spinned.
Its rotary speed is become more fast by the drawing rollers being as noted previously, as more downstream in drafting system 7, thus the rotary speed as the front roller pair of the drawing rollers pair of most downstream side is the fastest.Therefore, strong at the adjoint air-flow nearby produced of front roller pair, thus this is also big on the impact of yarn qualities with air-flow.In the drafting system 7 of present embodiment, in order to reduce high speed rotating front roller on the described impact with air-flow nearby produced, be formed with reducing diameter part 31 at front upper roller 20.
Below, the composition of front upper roller 20 is described in detail.As shown in Figures 4 and 5, front upper roller 20 has and is formed as the substantially certain columned fiber contacts portion 30 of diameter and reducing diameter part 31, and wherein at the axial both ends in this fiber contacts portion 30, reducing diameter part 31 is formed as little with fiber contacts portion 30 phase diameter group cylindric.
The outer peripheral face in the fiber contacts portion 30 of front upper roller 20 contacts the outer peripheral face of the front bottom roll 70 arranged opposite with this front upper roller 20.Thus, as it is shown in figure 5, be configured between fiber contacts portion 30 and front bottom roll 70 gripping fibers bundle 8.On the other hand, between reducing diameter part 31 and front bottom roll 70, it is formed with gap.
It follows that the adjoint air-flow nearby produced at front upper roller 20 configured as described above is illustrated.As it has been described above, front upper roller 20 is driven in rotation and driven rotation by front bottom roll 70 on the other side.Therefore, front upper roller 20 and the front mutual counter-rotating of bottom roll 70.Thus, as shown in Figure 4, the rotation of front upper roller 20 the adjoint air-flow 90 produced and the adjoint air-flow 91 produced by the rotation of front bottom roll 70 become mutually opposing air-flow, and in the entrance generation conflict to front roller pair of fibre bundle 8.
The adjoint air-flow 90 of conflict becomes (following along the direction parallel with the roller shaft of front upper roller 20 and front bottom roll 70 with 91, it is only called axially) air-flow that flows, and flow (that is, flowing diffusely outwardly) towards the axial end portion of front upper roller 20 and front bottom roll 70.If the described axial end portion arriving fiber contacts portion 30 with air-flow 90 and 91, the then gap by being formed between reducing diameter part 31 and front bottom roll 70, along the direction flowing parallel with the moving direction of fibre bundle 8.So, the flowing of the adjoint air-flow 90 and 91 flowed vertically can be run away via the gap formed between reducing diameter part 31 and front bottom roll 70.As a result of which it is, the flowing of the adjoint air-flow 90 and 91 flowed vertically dies down, it is thus possible to suppress the situation that the fiber of fibre bundle 8 spreads to axle edge due to adjoint air-flow 90 and 91.
In the past, it is contemplated that in the control with air-flow 90 and 91 as above, the shape of reducing diameter part 31 is important.Such as, in patent documentation 2, record the optimums such as the shape that how to set the width of reducing diameter part, gap.Such as, Japanese Unexamined Patent Publication 2010-163702 records the shape to reducing diameter part and carried out the various example studied intensively.On the other hand, shape and the size in fiber contacts portion 30 are not paid attention to very much.This is because the width that there is fiber contacts portion 30 should be the technology general knowledge of more than 18mm, and think that the leeway dimension and shape etc. in this fiber contacts portion 30 not studied intensively also is a reason.
But, as mentioned above, the result that present inventor etc. study repeatedly can be learnt clearly and be set in the spinning machine of conventional front upper roller 20 of more than 18mm by the axial width in fiber contacts portion 30 possessing, in spinning or during the yarn of ramuscule, it is impossible to obtain the effect that sufficient yarn qualities improves.The impact that present inventor etc. bring to yarn qualities for the shape investigating fiber contacts portion 30, has carried out following experiment.
Present inventors etc. make the front upper roller 20 that width axial for the roller in fiber contacts portion 30 is set to 18mm, 17mm, 16mm, have carried out the experiment of spinning spun yarn 10 in the spinning frame 1 have employed each front upper roller 20.Fig. 6 represents the result of the yarn qualities determining the spun yarn 10 now made.Wherein, A1 and the A2 recorded in Fig. 6 is the yarn defect being classified by known classimat (Classimat) classification.In figure 6, the quantity of every 100km of respective spun yarn 10 yarn defect being detected is described.The quantity of the yarn defect detected is more few, it may be said that be the spun yarn 10 that quality is more high.When the experiment carrying out Fig. 6, the width of the fibre bundle 8 of the state that fiber contacts portion 30 sandwiches is about 6mm.This is comparable to the fiber width of spun yarn 10 of about 30.Usually, 30 as in yarn.
As shown in Figure 6, compared with the situation that the width in fiber contacts portion 30 is set to 18mm, the yarn defect (especially classimat A1) when being set to 17mm, 16mm reduces.Particularly the width in fiber contacts portion 30 is being set in 16mm situation, it can be seen that make the effect that yarn defect reduces notable.So, by adopting the front upper roller 20 of the axial short of width 18mm (such as 17mm or 16mm) of roller in fiber contacts portion 30, the quality of the spun yarn 10 that confirmation can be propped up in improving.Known relative in spun yarn 10, the front upper roller 20 that the width in fiber contacts portion 30 is set to 16mm is particularly effective.
As it has been described above, in the past, if owing to thinking the short of width 18mm in fiber contacts portion 30, easily producing exposing of fiber, so not using the top drafting rollers of the short of width 18mm in fiber contacts portion 30.But now, it is known that there is situations below: even if the short of width 18mm in fiber contacts portion 30, without producing exposing of fiber, and the effect that yarn qualities improves can be obtained.That is, by the experiment of present inventor etc., specify that for the first time and the width in fiber contacts portion 30 is set to the probability that the front upper roller 20 less than 18mm is practical.
The result that present inventor etc. test further repeatedly, it has been found that in order to by the shape optimization of front upper roller 20, the width of non-clamping portion (non-nippingportion) is important.Herein, so-called non-clamping portion, refer to the part not having gripping fibers bundle 8 in fiber contacts portion 30.As it is shown in figure 5, the width by the fibre bundle 8 of the state clamped by fiber contacts portion 30 is set to SW, the axial width in fiber contacts portion 30 is set to W1.And the axial width in the non-clamping portion 32 and 33 in the more outward formation in width both ends than fibre bundle 8 is set to W2 and W3.So, owing to non-clamping portion 32 and 33 is formed at the both ends of fibre bundle 8, thus when referring only to " width in non-clamping portion " etc. in this manual, referring to the total W2+W3 of the width in the non-clamping portion 32 and 33 at both ends.
Below, inventor etc. the importance of the width in the non-clamping portion that specify that is briefly described bright.The width W2+W3 in so-called non-clamping portion is wide refers to the fibre bundle 8 clamped by fiber contacts portion 30 and reducing diameter part 31 situation in axial separation.Reducing diameter part 31 is formed with air-flow 90 and 91 to bleed off.Therefore, if fibre bundle 8 separates excessive with reducing diameter part 31, then the adjoint air-flow 90 and 91 near fibre bundle 8 can not be bled off.It is therefore contemplated that owing to this is with air-flow 90 and 91, cause that fibre bundle 8 becomes easy diffusion.Then, by somewhat being narrowed by the width W2+W3 in non-clamping portion, the adjoint air-flow 90 and 91 near fibre bundle 8 is prone to run away via reducing diameter part 31, thus fibre bundle 8 not easily spreads, and improves yarn qualities.But, if the width W2+W3 in the non-clamping portion that excessively narrows, then it is assumed that fibre bundle 8 easily exposes from fiber contacts portion 30, can reduce yarn qualities on the contrary.
Experimental result as shown in Figure 6 is the situation that width S W is 6mm of fibre bundle 8.Therefore, when the width W1 in the fiber contacts portion 30 of front upper roller 20 is set to 18mm, the width W2+W3 in non-clamping portion is 12mm.When the width W1 in fiber contacts portion 30 is set to 17mm, the width W2+W3 in non-clamping portion is 11mm.When the width W1 in fiber contacts portion 30 is set to 16mm, the width W2+W3 in non-clamping portion is 10mm.If observe the experimental result of Fig. 6 from the viewpoint of the width in non-clamping portion, then known, compared with when the width in non-clamping portion is set to 12mm, when the width in non-clamping portion is set to 11mm, yarn qualities improves, and yarn quality is improved particularly when the width in non-clamping portion is set to 10mm.That is, the width W1 in the fiber contacts portion 30 of front upper roller 20 is below 17mm, yarn qualities improves.
It addition, be the situation that width S W is 6mm of fibre bundle 8 shown in Fig. 6.But, that present inventor etc. tests repeatedly as a result, it is possible to confirm, if the width S W of this fibre bundle is below 7mm, then can improve yarn qualities by the width in non-clamping portion is set to below 11mm.
On the other hand, (the yarn of thick when the width S W of fibre bundle 8 is thicker than 7mm, the situation of such as SW=8mm), have in the front upper roller (the width W1 in fiber contacts portion 30 is the front upper roller less than 18mm) of the present invention and easily to produce the exposing of fiber, situation that yarn qualities reduces.Therefore, the front upper roller of the present invention 20 is applicable to a situation that width S W is below 7mm (than thick thin yarn, in being namely equivalent to or the yarn of ramuscule) of fibre bundle 8.It addition, for the width S W of fibre bundle 8 in the case of thicker than 7mm (during the yarn that spinning is thick), use conventional front upper roller (the width W1 in fiber contacts portion 30 is the front upper roller of more than 18mm).
The width S W of fibre bundle 8, in order to investigate the relation between the width W2+W3 exposing difficulty and non-clamping portion of fiber, is set to 10mm and has carried out the experiment of spinning spun yarn 10 by present inventors etc..Its result is as shown in Figure 7.When the width S W of fibre bundle 8 being set to 10mm as this experiment, (owing to width S W is thicker than 7mm) have easy in the front upper roller 20 of the present invention produce the exposing of fiber, situation that yarn qualities worsens.Therefore, by observing the relation between deterioration (yarn defect quantity) and the width W2+W3 in non-clamping portion of the yarn qualities in this experiment, it is possible to the relation between the width W2+W3 exposing difficulty and non-clamping portion of clear and definite fiber.If observing the experimental result of Fig. 7 from this viewpoint, then known, when the width W2+W3 in non-clamping portion is 7mm, 8mm, the quantity of yarn defect is fewer, and when the width W2+W3 in non-clamping portion is 6mm the increasing number of yarn defect (especially classimat A2).From this experimental result, it is believed that when the width W2+W3 in non-clamping portion is 6mm, the fiber of fibre bundle 8 easily exposes from fiber contacts portion 30.Therefore it is judged as, if the width W2+W3 in non-clamping portion is set to more than 7mm, is then prevented from exposing of fiber.
In sum, if making the width W2+W3 in the non-clamping portion of front upper roller 20 in the scope of more than 7mm below 11mm, then being prevented from fibre bundle 8 to expose from fiber contacts portion 30, and this fibre bundle 8 is difficult to because spreading with air-flow 90 and 91, its result is able to improve yarn qualities.That is, by the width W1 in fiber contacts portion 30 is set in scope shown below, it is possible to obtain the spun yarn 10 of good quality:
SW+7mm≤W1≤SW+11mm
Width S W when being clamped by fibre bundle 8 by the fiber contacts portion 30 of front upper roller 20, is determined by the setting (rotary speeies etc. of each drawing rollers pair) of drafting system 7.In the spinning frame 1 of present embodiment, prepare multiple front upper roller 20 different for width W1 making fiber contacts portion 30, be suitably used front upper roller 20 matchingly with the width S W of the fibre bundle 8 set by drafting system 7.Accordingly, it is preferred to, even if also being able to be accommodated in above-mentioned scope the width W1 in fiber contacts portion 30 when described setting is changed.Although in the above-described embodiment the situation (the width S W of fibre bundle 8 is the situation of 6mm specifically) of the yarn of in spinning being illustrated, but even if it also is able to serve the same role when the front upper roller 20 of present embodiment is the yarn of spinning ramuscule.That is, if the width S W of fibre bundle 8 is below 7mm (such as, SW=7mm, 6mm, 5mm, 4mm, 3mm, 2mm etc.), the front upper roller 20 of present embodiment also is able to play the effect improving yarn qualities.
Owing to the surface of top roller is the elastomeric element of rubber etc., so abrasion can be produced due to use.So, top roller is easily-consumed products, thus being configured to change at drafting system 7 middle top roller.Therefore, it is easy to change front upper roller 20 according to the setting of drafting system 7.
If (fiber contacts portion 30 and reducing diameter part 31 and together with axial width) is wide it addition, the width W4 of front upper roller 20 entirety, then can cause that roller bends, have the worry that clamping is uneven.On the other hand, if the width W4 of front upper roller 20 entirety is narrow, then the width of reducing diameter part 31 can not fully obtain, and bleeds off the effect with air-flow 90 and 91 thus can not give full play to.Experiment in this, according to present inventor etc., it is possible to confirm, if the width W4 by front upper roller 20 entirety is set in the scope of more than 30mm below 34mm, then will not result particularly in problem.Therefore, in the front upper roller 20 of present embodiment, the width W4 that roller is overall is set to more than 30mm below 34mm.It addition, the experimental result shown in Fig. 6 and Fig. 7 is the experimental result using the overall front upper roller that width W4 is 32mm 20 to carry out.
As it has been described above, the front upper roller 20 of present embodiment has: fiber contacts portion 30, the diameter in this fiber contacts portion 30 is shaped generally as necessarily, and makes fibre bundle 8 contact with its outer peripheral face；And reducing diameter part 31, at the axial both ends in fiber contacts portion 30, the diameter of this reducing diameter part 31 is formed as less than the diameter in fiber contacts portion 30.The axial width W4 being combined in fiber contacts portion 30 and reducing diameter part 31 is more than 30mm below 34mm.The axial width W1 in fiber contacts portion 30 is less than 18mm.
So, reducing diameter part 31 is formed by the both ends in fiber contacts portion 30, it is possible to bleed off adjoint the air-flow 90 and 91 produced with the rotation of front upper roller 20 such that it is able to the diffusion of suppression fibre bundle 8.By the width in fiber contacts portion 30 is set to less than 18mm, in the situation (in order to obtain the situation of drawn fiber bundle 8 than thick thin yarn) of the narrow width of the fibre bundle 8 of drawing-off, the impact with air-flow can be reduced such that it is able to improve yarn qualities.
The drafting system 7 of present embodiment possesses described front upper roller 20 and front bottom roll 70, and before wherein, bottom roll 70 is arranged opposite with this front upper roller 20, and between this front bottom roll 70 and fiber contacts portion 30 of this front upper roller 20 gripping fibers bundle 8.The axial width W1 width in fiber contacts portion 30 is at scope internal ratio width S W width of the fibre bundle 8 of held state between this fiber contacts portion 30 and front bottom roll 70 of more than 7mm below 11mm.
So, by leaving more than needed relative to the width S W of held fibre bundle 8 to the width W1 in fiber contacts portion 30, it is possible to prevent fiber from exposing from fiber contacts portion 30.If relative to the width of held fibre bundle 8, the width in fiber contacts portion 30 is wide, then become big with the impact of air-flow 90 and 91 and fibre bundle 8 easily spreads.By the width W1 in fiber contacts portion 30 is located in above-mentioned scope relative to (that is, the width in non-clamping portion) more than needed of the width S W of fibre bundle 8, it is possible to suppress fibre bundle 8 because spreading with air-flow.As it has been described above, determined the width W1 in the fiber contacts portion 30 of front upper roller 20 by the width according to drafted fibre bundle 8, using the teaching of the invention it is possible to provide optimum drafting system 7.
The drafting system 7 of present embodiment is preferably, as follows by this fibre bundle 8 drawing-off, i.e. the width S W of the fibre bundle 8 of state held between fiber contacts portion 30 and front bottom roll 70 is set to below 7mm.
The front upper roller 20 of present embodiment is suitable in being used for the drawing-off of fibre bundle 8 of the yarn thinner than thick (in or the yarn of ramuscule).Therefore, by the width S W of the fibre bundle 8 of the state clamped by this front upper roller 20 being set to 7mm (in, be equivalent to the yarn of substantially 30) below, it is possible to carry out the drawing-off of fibre bundle 8 with particularly preferred quality.
Front upper roller 20 is configured in the roller that drafting system 7 possesses the most downstream side of the transport direction of fibre bundle 8, owing to rotating with the highest speed, thus the impact with air-flow 90 and 91 is also maximum.Therefore, by adopting the drawing rollers of the present invention at this front upper roller 20, it is possible to play the most significantly and bleed off with air-flow 90 and 91 to suppress the effect of the diffusion of fiber.
The spinning frame 1 of present embodiment has multiple spinning unit 2, and this spinning unit 2 possesses described drafting system 7；And the fibre bundle 8 by this drafting system 7 drawing-off is spinned and makes the spinning apparatus 9 of spun yarn 10.
The drafting system 7 of present embodiment is especially suitable in being used for or in the drawing-off of the fibre bundle 8 of the yarn of ramuscule.Therefore, the spinning frame 1 according to above-mentioned composition, it is possible to increase in being made up of spinning apparatus 9 or the quality of the spun yarn 10 of ramuscule.
In the spinning frame 1 of present embodiment, spinning apparatus 9 is open end spinning apparatus.
Owing to open end spinning apparatus can carry out high-speed spinning, drawing rollers are high speed rotating also, often also becomes big with the impact of air-flow 90 and 91.By adopting the drawing rollers that can bleed off the described present invention with air-flow 90 and 91, it is possible to play the effect of the quality improving spun yarn 10 significantly.
In the spinning frame 1 of present embodiment, spinning apparatus 9 possesses: nozzle carrier 34；Hollow guiding axis body 23；And fibre guide part 22, fibre bundle 8 is guided by this fibre guide part 22 in the spinning room 26 being formed between nozzle carrier 34 and hollow guiding axis body 23.
In the open end spinning apparatus of the precision of the state of the fibre bundle 8 requiring to be imported in spinning room 26, fibre bundle 8 is imported into stable state by fibre guide part 22.As a result of which it is, spinning frame 1 can make stay-in-grade spun yarn 10.
Above the preferred embodiment of the present invention is illustrated, but described is configured to such as following change.
The present invention also is able to suitable in the drafting system of other kinds of spinning machine (such as ring spinner).
In said embodiment, spun yarn 10, by circumvolution spun yarn 10 around the yarn storage roller 14 rotated, is spun by spinning frame 1 from spinning apparatus 9.Can also replace yarn storage device 12 that delivery roller and the clamping roller of rotation are set, by being spun from spinning apparatus 9 by spun yarn 10 with clamping roller clamping spun yarn 10 by this delivery roller.In this case, at the downstream configuration yarn storage roller 14 of delivery roller with clamping roller, it is also possible to loosening of the spun yarn 10 that absorption produces when winding work or joint work.
The sley point 22a of the needle-like that fibre guide part 22 possesses can also be omitted.In this case, it is also possible to utilize the edge of end of downstream side of fibre guide part 22 to realize the function of above-mentioned sley point 22a.
It is cylindric that the shape of reducing diameter part 31 is not limited to shown in Fig. 4 and Fig. 5 etc., it is also possible to is such as formed as inclined plane shape or curved as disclosed in Japanese Unexamined Patent Publication 2010-163702.
In said embodiment, although the composition that the drawing rollers of the present invention are applied to front upper roller is illustrated, but is not limited to this, it is also possible to the composition of the present invention is applied to front bottom roll.It is not limited to front roller pair, other drawing rollers also are able to the composition of the application present invention.
Claims (10)
1. a drafting system, it is characterised in that possess:
Drawing rollers, these drawing rollers have fiber contacts portion and reducing diameter part, wherein, this fiber contacts portion is cylindrical, and make fibre bundle contact with the outer peripheral face in this fiber contacts portion, at the axial both ends in described fiber contacts portion, the diameter of this reducing diameter part is formed as less than the diameter in described fiber contacts portion, the axial width being combined in described fiber contacts portion and described reducing diameter part is more than 30mm below 34mm, and the axial width in described fiber contacts portion is less than 18mm；And
Opposed roller, this opposed roller and described drawing rollers are arranged opposite, and between this opposed roller and the described fiber contacts portion of these drawing rollers gripping fibers bundle,
Described fiber contacts portion includes the part of gripping fibers bundle between described fiber contacts portion with described opposed roller and clamping part and does not have part and the non-clamping portion of gripping fibers bundle,
Width above below the 11mm of width 7mm of clamping part described in the axial width ratio in described fiber contacts portion.
2. drafting system according to claim 1, it is characterised in that
As follows by fibre bundle drawing-off, i.e. the width making described clamping part is below 7mm.
3. drafting system according to claim 1, it is characterised in that
Described drawing rollers are front upper roller.
4. drafting system according to claim 2, it is characterised in that
Described drawing rollers are front upper roller.
5. drafting system according to claim 1, it is characterised in that
The axial width in described fiber contacts portion is 16mm.
6. drafting system according to claim 1, it is characterised in that
The axial width in described fiber contacts portion is 17mm.
7. drafting system according to claim 1, it is characterised in that
The axial width being combined in described fiber contacts portion and described reducing diameter part is 32mm.
8. a spinning machine, it is characterised in that have multiple spinning unit, this spinning unit possesses: the drafting system according to any one of claim 1 to 7；And the fibre bundle by this drafting system drawing-off is spinned and makes the spinning apparatus of spun yarn.
9. spinning machine according to claim 8, it is characterised in that
Described spinning apparatus is open end spinning apparatus.
10. spinning machine according to claim 9, it is characterised in that
Described spinning apparatus possesses: nozzle carrier；Hollow guiding axis body；And fiber guide portion, fibre bundle is guided by this fiber guide portion in the spinning room being formed between described nozzle carrier and described hollow guiding axis body.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2010-258249 | 2010-11-18 | ||
| JP2010258249A JP2012107363A (en) | 2010-11-18 | 2010-11-18 | Draft roller, draft machine and spinning machine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102465364A CN102465364A (en) | 2012-05-23 |
| CN102465364B true CN102465364B (en) | 2016-06-29 |
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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) |
Families Citing this family (6)
| 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 |
| DE102013017636A1 (en) * | 2013-10-23 | 2015-04-23 | Saurer Germany Gmbh & Co. Kg | Drafting system for an air-spinning device |
| JP2015081398A (en) * | 2013-10-23 | 2015-04-27 | 村田機械株式会社 | Draft device and spinning machine |
| 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 |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB566708A (en) * | 1943-07-12 | 1945-01-10 | Thomas Ryder & Son Ltd | Improvements relating to top rollers for self acting mules, ring frames and speed frames |
| CN1524982A (en) * | 2003-02-25 | 2004-09-01 | 村田机械株式会社 | Drafting roller and drafting assembly |
| CN1603483A (en) * | 2003-10-02 | 2005-04-06 | 村田机械株式会社 | Draft device |
| CN101225560A (en) * | 2008-02-04 | 2008-07-23 | 河北太行机械工业有限公司 | Drafting assembly of spinning machine |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4004045A1 (en) * | 1990-02-10 | 1991-08-14 | Fritz Stahlecker | DEVICE FOR PNEUMATIC SPIRAL SPINNING |
| DE4037834A1 (en) * | 1990-11-28 | 1992-06-04 | Fritz Stahlecker | Pneumatic false twist spinner - has separate clamping lines for each sliver at final pair of drawing rollers |
| JP2517614Y2 (en) * | 1991-11-28 | 1996-11-20 | 村田機械株式会社 | Front roller |
| JPH07126926A (en) * | 1993-10-25 | 1995-05-16 | Murata Mach Ltd | Front top roller of draft apparatus |
| JP2010163702A (en) | 2009-01-13 | 2010-07-29 | Murata Machinery Ltd | Drafter |
-
2010
- 2010-11-18 JP JP2010258249A patent/JP2012107363A/en active Pending
-
2011
- 2011-09-12 EP EP11180923.2A patent/EP2455518B1/en not_active Not-in-force
- 2011-10-24 CN CN201110329117.0A patent/CN102465364B/en active Active
- 2011-10-24 CN CN 201120414027 patent/CN202658310U/en not_active Withdrawn - After Issue
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB566708A (en) * | 1943-07-12 | 1945-01-10 | Thomas Ryder & Son Ltd | Improvements relating to top rollers for self acting mules, ring frames and speed frames |
| CN1524982A (en) * | 2003-02-25 | 2004-09-01 | 村田机械株式会社 | Drafting roller and drafting assembly |
| CN1603483A (en) * | 2003-10-02 | 2005-04-06 | 村田机械株式会社 | Draft device |
| CN101225560A (en) * | 2008-02-04 | 2008-07-23 | 河北太行机械工业有限公司 | Drafting assembly of spinning machine |
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Also Published As
| Publication number | Publication date |
|---|---|
| EP2455518A2 (en) | 2012-05-23 |
| CN102465364A (en) | 2012-05-23 |
| JP2012107363A (en) | 2012-06-07 |
| CN202658310U (en) | 2013-01-09 |
| EP2455518B1 (en) | 2018-09-05 |
| EP2455518A3 (en) | 2015-04-22 |
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