CN101910482B - Drafting unit - Google Patents
Drafting unit Download PDFInfo
- Publication number
- CN101910482B CN101910482B CN200880124432.6A CN200880124432A CN101910482B CN 101910482 B CN101910482 B CN 101910482B CN 200880124432 A CN200880124432 A CN 200880124432A CN 101910482 B CN101910482 B CN 101910482B
- Authority
- CN
- China
- Prior art keywords
- roller
- sliver
- feeding
- control
- pair
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- 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
- D01H5/22—Drafting machines or arrangements without fallers or like pinned bars in which fibres are controlled by rollers only
-
- 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
- D01H5/56—Supports for drafting elements
-
- 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
- D01H5/72—Fibre-condensing guides
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Textile Engineering (AREA)
- Spinning Or Twisting Of Yarns (AREA)
- Superconductors And Manufacturing Methods Therefor (AREA)
- Diaphragms For Electromechanical Transducers (AREA)
- Electric Double-Layer Capacitors Or The Like (AREA)
Abstract
A drafting unit (10) for drafting discontinuous textile fibers comprises a first pair of feed rolls (12) that feed a sliver or strip (18) toward a second pair of drafting rolls (14) that draft the sliver or strip (18). The drafting unit also comprises a control device (11) to control the drafting disposed between the first pair of feed rolls (12) and the second pair of drafting rolls (14), which comprises a third pair of control rolls (20, 22), of which a first roll (20) on one side of the sliver or strip (18) and a second roll (22) on another side of the sliver or strip (18). The control rolls (20, 22) act on the sliver or strip (18) arriving from the first pair of feed rolls (12) in order to take it at a determinate speed of feed toward the second pair of drafting rolls (14).
Description
Technical field
The present invention relates to a kind of drafting unit of the improvement type of using in spinning discontinuous fibre (particularly linen thread), it has realized the effective control to fiber (particularly staple fibre).
Background technology
The method of known spinning natural fabric is defined as elimination impurity, blending ingredients, come separately fiber by carded, come finishing fiber by combing, make with extra care structure and ordered structure by drawing-off, come combinatorial construction by inserting yarn twisted and that coiling is formed on the suitable supporter (roll).
Especially, by drawing-off, subsequently twisted and last winding, obtain yarn from the sliver of determining in grams weight.
Before drawing-off, high-quality number is the production regulation of linen thread particularly, before sliver is introduced into draw zone, sliver is immersed (wet spinning) in the water-filled chest.This operation is beneficial to the separation of fibre bundle, improves it and advances and promote the drawing-off effect that sliver is subject to.
Especially, utilize two pairs of rollers that separate a gap and rotate with friction speed, feeding roller and drawing rollers, drawing-off operates the gradually set of refined fiber, until obtain required final number.
Provide drawing-off with the ratio between the speed of the speed of drawing rollers and feeding roller, wherein the former speed is always greater than the latter's speed.Like this, the number in exit is lower than the number of import department.
In the draw zone that is limited by the gap between feeding roller and the drawing rollers, we have:
-by the fiber of feeding roller clamping, fiber advances with the speed that feeding roller gives;
-by the fiber of drawing rollers clamping, fiber advances with the speed that drawing rollers give;
-not only by feeding roller but also by the fiber of drawing rollers clamping, these fibers will disconnect;
-be not fed to the unsteady fiber of roller or drawing rollers clamping.
Under ideal conditions, afterbody will move with the speed that feeding roller gives by each fiber of feeding roller clamping line, until its head arrives the clamping line of drawing rollers, in this case, fiber will suffer instantaneous acceleration to reach the speed that drawing rollers give.
In fact, antithesis, in the unsteady fiber some had just changed speed before the appropriate location of their arrival drawing rollers, this is because they are by by the unsteady fiber towing of drawing rollers clamping, this too early and not controlled acceleration consists of defective drawing-off, generally speaking causes additional irregularity.
Feeding roller and drawing rollers to pressing each other in order to effectively maintain separately the fiber that is held.
Thereby the fiber that is fed to roller and drawing rollers clamping by the friction that applies in the contact point between the fiber that floats and utilization is regulated the movement of unsteady fiber.Fiber moves with the speed that feeding roller gives as long as float, as long as namely maintain the dynamic friction that the static friction of the fiber that is fed to the roller clamping still is higher than the fiber of the drafted roller clamping of advancing along drawing rollers, the fiber that floats just still is under the control.
In order in fact to obtain the drawing-off near desirable drawing-off situation, namely it postpones the acceleration of unsteady fiber as far as possible, may carry out free zone drawing-off or controlled area drawing-off.
The free zone drawing-off reduces based on feeding roller and drawing rollers gap, because the existence of the fiber that floats, it is only favourable to low draw ratio.
Controlled area drawing-off regulation is improved near the adhesion characteristics of the fiber of (particularly the drawing rollers) in the draw zone, and at draw zone, the faster fibres of drafted roller clamping can make their action be felt more.
For this reason, be known that the control device with pin area type that is used in the woolen industry, and be used in belt dressing or curve drawing district in the cotton industry.
As the drawing-off of more known preparation circulation, the drawing-off that is used for the discontinuous fibre of cotton and wool is compared with them has the three basic difference:
-for the fiber of suitable big-length, the large gap between the entrance and exit of feeding roller and drawing rollers;
By belt or movably faller gill control, the speed of its speed and feeding roller is synchronous traditionally for sliver between-feeding roller and the drawing rollers;
-in the situation of linen fibre, because the effect of faller gill mechanical action and roller clamping, fibre bundle trends towards separately and shortens, and has sizable change.
Thereby the control of fiber not only provides and has used the complication system of belt or faller gill, and is not very effective.In fact, it does not prevent that the staple fibre of the quite large quantity that part only is controlled from being disarrayed by the fiber that accelerates owing to the effect of drawing-off itself in the regular motion of drawing rollers at them.
Therefore, particularly in the field of linen thread, at present known control, greatly need the better control of the fiber (particularly staple fibre) in a kind of counter extensioin district at discontinuous fibre.
On the other hand, because the inhomogeneous length of linen fibre, the diameter of discontinuous fibre and the polymolecularity of length are (with regard to linen thread, be included between about 18 microns to 50 microns, yet, for example with regard to wool, it is included between about 19 microns to 28 microns), sizable variation in the average and long-term time limit of the number of the sliver that enters, last but be not the most unessential, the existence of water on the sliver in wet spinning can not be used for obtaining appreciable result in the drawing-off of discontinuous fibre so be used for the solution of control drawing-off in wool and cotton industry.
The objective of the invention is to obtain that a kind of it has realized the particularly suitable control of staple fibre of the fiber in the draw zone for the drawing-off discontinuous fibre drafting unit of linen thread particularly, it is made easily, operation and maintenance, and cost is limited.
The applicant has designed, has tested and implemented the present invention with the shortcoming of the situation that overcomes prior art and obtained these and other purposes and advantage.
Summary of the invention
In independent claims, illustrated the present invention and embodied feature of the present invention, and dependent claims has been described other features of invention or the modification of main invention theory.
According to above-mentioned purpose, a kind of drafting unit for the discontinuous textile fabric of drawing-off (particularly linen thread) comprises first pair of feeding roller, it can feed sliver or the strip that is formed by textile fabric towards the second counter extensioin roller with predetermined feeding speed, and the drawing-off of the second counter extensioin roller energy is by this sliver or strip to the feeding roller feeding.
According to the present invention, the drawing-off control device is between first pair of feeding roller and the second counter extensioin roller, the drawing-off control device comprises the control roller of the 3rd pair of rotation at least, wherein first roller is positioned on the side of sliver or strip and is installed on the framework, and the second roller is positioned on the opposite side of sliver or strip and by the bracing or strutting arrangement that links to each other with framework and supports.
According to the present invention, the control roller works in order to supply sliver or strip towards the second counter extensioin roller with predetermined and controlled feeding speed to sliver or the strip from first pair of feeding roller.
In the embodiment of the present invention's the first form, two control rollers longitudinally arrange basically with respect to the feeding axis of sliver, and mutually arrange in order to form departing from of adjustable size along the feeding axis of sliver.
In other words, the circumference that the control roller relative to each other is arranged to separately is slightly staggered, and at least slightly overlapping in projection, so that with respect to desirable feeding line, the variation of direction is given the sliver that passes, and wherein desirable feeding line is limited by the line in the gap that connects the drawing rollers upstream and downstream.
Thereby the size that changes by regulating direction, that is, the mutual alignment of the axis by change control roller is in the part between first pair of feeding roller and the second counter extensioin roller, particularly in the fibre bundle that forms sliver, regulate the size that is applied to the control action on the sliver.
In another embodiment of the present invention, the control roller is arranged to respect to the feeding axis of sliver substantial alignment each other on the axis of quadrature basically, or the pressure of the adjustable size that tilts, and the sliver that passes through is applied at the most.
In this embodiment, preferential modification provide a kind of be installed on the framework and with the bracing or strutting arrangement cooperation of the second roller in order to flexibly retrain the elastic device of the second roller so that regulate this to roller to sliver or strip applied pressure.
Drafting unit of the present invention has been realized the particularly suitable control of staple fibre of fiber in the draw zone, and easily manufacturing, operation and maintenance, and cost is limited.
In fact, the controllability of the controllability that departs from stroke and the in another example action of elastic device is than the effective adjusting that is easier to impel and be implemented in the control that is applied in the drafting process on the fiber in an example, and this makes the drafting force that fiber is worked stable.
Thereby the present invention has guaranteed effective control of fiber, still is in the draw zone but the impact of uncontrolled motion that no longer suffers the fiber of the control of feeding roller or clamping because it has reduced (if eliminating fully) considerably.
In the present invention, it is high that sufficient to guarantee is included in sliver or the strip and the master control of the constant and equal motion of whole fibers of also not drafted roller clamping to be applied to pressure on sliver or the strip.
The present invention has increased the discontinuous fibre precision of the control of linen thread particularly of process, any length and the diameter of the drafting step of carrying out at the spinning machine that is used for discontinuous fibre.Especially, compare with the situation of prior art, the present invention can be in the process of the terminal stage of drawing-off and the length of fiber and the diameter much accurate fibre bundle of controlling irrespectively.
Because the improved control of staple fibre and the scrambling of sliver generally speaking, so with respect to the situation of prior art, the present invention allows to increase draw ratio.
In addition, the present invention allows to spin (particularly a wide range of for fineness and the length of fiber) discontinuous fibre in identical spinning machine, and with regard to weight and sliver or the strip of stark reason broad range.
In short and long time limit, production of the present invention has the yarn of good systematicness.
The present invention has reduced the formation of cotton knot and the fluffing of yarn on the yarn, and has improved quality, tightness and the resistance of yarn.
Description of drawings
According to below in conjunction with the description of accompanying drawing to the preferred form of the embodiment that provides as non-limitative example, these and other features of the present invention will become apparent, wherein:
Fig. 1 is the schematic diagram of the relevant drafting unit of the spinning machine with being used for discontinuous fibre of the present invention;
Fig. 2 represents the first form of embodiments of the invention;
The amplification details of Fig. 2 a presentation graphs 2;
Fig. 3 is the amplification details of drafting unit among Fig. 1, and it is schematically shown;
Fig. 4 is the front view of the part of the drafting unit among Fig. 2;
Fig. 5 is the side view of that part among Fig. 4;
Fig. 6 is the plane that part from Fig. 4 is seen from the top.
The specific embodiment
With reference to figure 1, drafting unit 10 of the present invention is installed in the spinning machine 100 for linen thread.After sliver or strip immersed in the water-filled chest 17 (wet spinning) and pass the sliver guiding piece, drafting unit 10 received from sliver or the strip 18 of the linen thread of bobbin 16 feedings.
Sliver 18 comprises length and the short discontinuous fibre of linen thread, and the vicissitudinous number of its tool has the diameter that is included in the variation between about 18 microns to 50 microns, and has the length that is included in the variation between the 20mm to 100mm.
Long fiber, we mean length and are included in fiber between the 50mm to 100mm.
Staple fibre, we mean length and are included in fiber between the 20mm to 50mm.
In case be subject to drawing-off in drafting unit 10, sliver 18 just is sent to spinning frame 21 by thread guides 19, and it keeps in the pre-treatment of linen yarn there.
At least in drafting unit 10, sliver 18 is gone (Fig. 2 a and 6) along the feeding direction S that determines of straight line basically.
Drafting unit 10 comprises a pair of feeding roller 12 in a conventional manner, its from the sliver guiding piece receive sliver 18 and clamping it, feeding roller 12 be counterclockwise rotation and have a feeding speed that synchronous rotational speed is determined to give sliver 18.
In addition in a conventional manner, this downstream to feeding roller 12 is provided with a pair of drawing rollers 14, drawing rollers 14 receive slivers 18 and clamping it; Drawing rollers are that counter clockwise direction is rotated and have the draft speed that synchronous rotational speed is determined to give sliver 18 that draft speed is greater than feeding speed.Recently definite drawing-off of draft speed and feeding speed.
By the mobile feeding roller 12 of important parameter (for example length and diameter) according to sliver 18, for example by activating slider 35 (Fig. 2), can regulate distance or gap between feeding roller 12 and the drawing rollers 14.This allow drafted roller 12 gradually the fiber of clamping correctly advance.
Between two pairs of rollers 12 and 14, drafting unit 10 comprises control device 11, with the control draw zone.
The rotary speed of first roller 20 and the second roller 22 equates with the rotary speed of feeding roller 12 or is larger than it, preferably slightly large than it.
According to an embodiment, roller 20,22 rotary speed than the speed of feeding roller 12 larger about 1%-30%.
Make first roller 20 rotations by wheel 30, wheel 30 directly obtains its rotation from not shown mechanism, may increase its rotating speed, and this unshowned mechanism makes feeding roller 12 rotations.Especially, provide series of gears, its motion that will be installed in the instruction gear in the draw zone of spinning machine 100 accurately is delivered to the first gear that is made of wheel 30, and this first gear key is connected on the power shaft that moves to drafting unit 10.
Can passing through independently, motor becomes the whole system by the gear commander, described gear key be connected on the command shaft of spinning machine upstream and by suitable layout so that commander's control device 11, perhaps described gear key is connected on the axle that has existed, such as the axle of feeding sliver or the axle of traditional drawing-off belt.
In the embodiment shown in Fig. 2, the 2a, two rollers 20 and 22 are longitudinally arranged basically with respect to the feeding direction of sliver 18, be arranged to each other especially form slight departing from along the feeding direction, the feeding direction is limited by the line that connects the gap between feeding roller 12 and the drawing rollers 14.
As being shown specifically among Fig. 2 a, first roller 20 limits the first gap or departs from, it has adjustable size " i1 ", the first slight direction variation of sliver 18 with respect to the direction that limits determined in this first gap or depart between roller 12 and 14, and the second roller 22 has given to have the second gap of adjustable size " i2 " or depart from, this second gap or depart from usually and the identical and opposite direction of " i1 " value.Belong to and in the scope of the invention be, among gap " i1 " and " i2 " one or the other can have null value, so that the only feeding direction of a change sliver 18 in the stroke of sliver between feeding roller 12 and drawing rollers 14 in two rollers 20 or 22.
Thereby regulate the possibility of size in change gap, position " i1 " or " i2 " of in the roller 20 and 22 and/or another with respect to the feeding direction of sliver 18 so that can be in tension force and the speed of the fiber of the entrance control sliver 18 of drawing rollers 14, thereby in terminal stage and the length of fiber and the Optimal Control that diameter is irrespectively guaranteed fiber of drawing-off.
Modification shown in Fig. 3-6 relates to another form of embodiment, wherein in the part that is included between feeding roller 12 and the drawing rollers 14, roller 20 and 22 and the feeding axis of sliver 18 basically arrange orthogonally, and apply the pressure of adjustable size thereon.In an illustrated embodiment, first roller 20 is installed on the fixing framework 24 by associated spindles 23, and the feeding direction S of its rotation X and sliver 18 is quadrature basically.
Be provided with unshowned in the drawings return gear, it will rotatablely move and be sent to the second roller 22 from first roller 20.
The second roller 22 is supported by one or two bar 26, and the rotation X ' of bar 26 and the feeding direction of sliver 18 be quadrature and parallel with the longitudinal axis X of first roller 20 basically.
By the associated spindles 25 with circular cross-section the second roller 22 is installed, associated spindles 25 is contained in by its end in the oval eyelet 27 that is formed at two bar 26 ends, and oval eyelet 27 extends along transverse axis Z.
In order effectively to control the fiber of sliver 18, this is positioned at the distance of as close as possible drawing rollers 14 to roller 20 and 22.This distance must be that the potential range of lacking is most also controlled in order to guarantee staple fibre.
Like this, when drafted roller 14 clampings of the long fiber of sliver 18 were also drafted, staple fibre was maintained by roller 20 and 22 and can be along with long fiber is advanced.This has guaranteed not advanced in controlled and unified mode by all fibres of these counter extensioin roller 14 clampings yet, and can not stop the fiber that in fact has been held to be advanced.The premature advancement that this has prevented the fiber that is held has not yet obtained the required effect of control drawing-off, particularly for staple fibre.
In the solution shown in this solution and Fig. 2 and the 2a, roller 20 and 22 shape also are defined in the function of purposes in the wet spinning (in Fig. 1), and be defined in the function of purposes in the dry-spinning, and in the situation of the twist of the very wide scope of sliver and strip and weight, use.
According to the drawing-off needs with treat the type of the sliver of drawing-off, roller 20 and 22 outer surface can be fluting with annular knurl, or perfectly smooth.
The material of making roller 20 and 22 is hard material and have anti-stick and anti-static function preferably, and described hard material covers outer surface at least.
Contrast bar 31 is outstanding from the rear portion of the bar 26 of support roller 22.
Spring 32 is installed in below the contrast bar 31, and this spring is the metal spiral type, and prestrain has definite elastic force.Contrast bar 31 leans against on the described spring 32, and spring 32 is usually along the bar 31 of thrusting of direction shown in the arrow F among Fig. 4, and the thrust on the bar 31 is converted to along direction shown in the arrow G and is applied to rotation torque on the bar 26, its balance pivot and axis X " consistent.
Like this, be applied to elastic force on the bar 31 according to the elastic property of spring 32 with by it, bar 26 trends towards keeping the second roller 22 always to contact with sliver 18.
Thereby if be used on the roller 22 greater than the masterpiece of spring 32 elastic force, then bar 26 and roller 22 have in the angular range of determining around axis X " rotation or the possibility that pivots.Like this, variable but controlled pressure is applied on the sliver 18 below.
Any inhomogeneity shortage of sliver 18 or any variation of number, diameter or volume all change into the discontinuous of motion, thereby change into shown in arrow P among Fig. 4 along transverse axis Z and act on power on roller 20 and 22, because the elastic reaction of bar 26 and spring 32, thereby this power is damped and absorption.Thereby, the axis X of roller 22 ' trend towards slight mobile the first cross stream component along axis Z, and move the second component parallel with the feeding axis S of sliver 18, thus determined the slight rotation trend of roller 22, this trend allows damping.Obviously, roller 22 under any circumstance must always keep clamping sliver 18, and guaranteeing the control of fiber, yet elasticity absorbs the situation that allows this clamping dynamically to adapt to sliver 18.
Allowed to adjust by roller 20 and 22 clamp horizontals of realizing by the use of the roller 22 of spring 32 dampings, and allow to regulate the pressure that is applied on the sliver 18, advance to realize the controlled of fiber that is held.
Especially, roller 22 has been guaranteed the best and variable contacting between fiber and the fiber, and it only allows freely to be advanced by the fiber of roller 22 clampings and acceleration.
According to the character of the sliver 18 that is subject to drawing-off, the elastic force of regulating spring 32 prestrains selectively, advantageously, the elastic force of regulating spring 32 prestrains changeably and little by little.In order to realize this adjusting, be provided with adjusting nut 33 in the threaded seat 34 below spring 32, it can upwards push away spring 32.
According to nut 33 be screwed into/back-outed relevant threaded seat 34 what, nut 33 is determined the larger or less pressure of springs 32.
Use as the spring 32 of the elasticity absorber element that acts on the scrambling on the roller 22 needn't be understood to limitation of the present invention.In fact, can replace spring 32 with any other flexible member, no matter what it is, as long as have predetermined elastic property.
For example can use gas spring, sheet spring arrangement, fluid dynamic piston mechanism or other mechanisms as flexible member.
Replace spring 32, a form of embodiments of the invention is used the element of being made by elastomeric material, rubber or other materials, and their elastic property is known.
Preferred elastomeric material is aeriferous expanded polyurethane (expandedpolyurethane), and it has given longer duration and repeatable reliably elastic property.
Obviously, in the situation that does not deviate from field of the present invention and scope, as describing before this, can carry out change and/or the interpolation of a plurality of parts by counter extensioin parts 10.
Claims (21)
1. be used for the drafting unit of the discontinuous textile fabric of drawing-off, this drafting unit comprises:
First pair of feeding roller (12), sliver or strip (18) that it can be formed by textile fabric towards the feeding of the second counter extensioin roller (14) with the feeding speed of determining, the drawing-off of described the second counter extensioin roller (14) energy is by sliver or the strip (18) of described first pair of feeding roller (12) feeding, it is characterized in that: this drafting unit comprises control device (11), be arranged in drawing-off between described first pair of feeding roller (12) and described the second counter extensioin roller (14) with control, described control device (11) comprises the control roller (20 of the 3rd pair of rotation at least, 22), wherein first roller (20) is on a side of described sliver or strip (18), the second roller (22) is on the opposite side of described sliver or strip (18), described to control roller (20,22) can sliver or the strip (18) from described first pair of feeding roller (12) be worked in order to supply described sliver or strip towards described the second counter extensioin roller (14) with predetermined feeding speed, described to control roller (20 thus, 22) basically arrange orthogonally with respect to the feeding axis of described sliver (18), provide elastic device (32) in order to flexibly retrain the rigging position of described the second roller (22), in order to regulate by this control roller (20,22) be applied to pressure on described sliver or the strip (18), described elastic device comprises that the spring of prestrain and regulating element (33) are to regulate the elastic force of described spring, and the feeding speed of being determined by described the 3rd pair of control roller (20,22) is greater than the feeding speed of being determined by described first pair of feeding roller (12).
2. drafting unit as claimed in claim 1, it is characterized in that described to control roller (20,22) basically longitudinally arrange with respect to the feeding axis of described sliver (18), and mutually arrange in order to form departing from of adjustable size along the described feeding axis of described sliver (18).
3. drafting unit as claimed in claim 2 is characterized in that the described circumference that control roller (20,22) relative to each other is arranged to separately slightly interlocks, and overlapping in projection.
4. drafting unit as claimed in claim 1 is characterized in that described elastic device comprises the element of being made by elastomeric material.
5. drafting unit as claimed in claim 4 is characterized in that described elastomeric material is based on aeriferous expanded polyurethane.
6. such as the described drafting unit of aforementioned arbitrary claim, it is characterized in that the bracing or strutting arrangement of described the second roller (22) comprises the bar (26) that connects and be pivoted on by means of described pin (28) support frame (24) by pin (28).
7. drafting unit as claimed in claim 6, it is characterized in that described bar (26) has oval-shaped eyelet or hole (27) at the place, end, described the second roller (22) is installed on the described bar (26) by the axle (25) that is contained in described oval-shaped eyelet or hole (27), in order to allow the mobile vertical stroke of determining of the second roller (22).
8. such as the described drafting unit of arbitrary claim of claim 1-5, it is characterized in that being substantially equal to by the definite feeding speed of described the second counter extensioin roller (14) by the feeding speed that described the 3rd pair of control roller (20,22) determined.
9. drafting unit as claimed in claim 8 is characterized in that the speed of described the 3rd pair of control roller (20,22) is than the large 1%-30% of speed of described first pair of feeding roller (12).
10. such as the described drafting unit of arbitrary claim of claim 1-5, it is characterized in that the diameter of each roller in described the 3rd pair of control roller (20,22) is included between the 8mm to 12mm.
11. such as the described drafting unit of arbitrary claim of claim 1-5, it is characterized in that the length of each roller in described the 3rd pair of control roller (20,22) is included between the 8mm to 12mm.
12. such as the described drafting unit of arbitrary claim of claim 1-5, it is characterized in that the surface of each roller in described the 3rd pair of control roller (20,22) is annular knurl.
13. such as the described drafting unit of arbitrary claim of claim 1-5, it is characterized in that the surface of each roller in described the 3rd pair of control roller (20,22) has central channel.
14. such as the described drafting unit of arbitrary claim of claim 1-5, it is characterized in that the surface of each roller in described the 3rd pair of control roller (20,22) is smooth.
15. such as the described drafting unit of arbitrary claim of claim 1-5, the surface that it is characterized in that each roller in described at least the 3rd pair of control roller (20,22) is by having anti-stick and hard material anti-static function is made.
16. drafting unit as claimed in claim 6, the described first roller (20) that it is characterized in that being installed on the described support frame (24) is fixing with respect to described sliver or strip (18), described the second roller (22) that is installed on the bracing or strutting arrangement (26) that links to each other with described framework (24) is mobile with respect to described first roller (20), and described elastic device (32) described the second roller of control (22) is with respect to the movement of described sliver or strip (18).
17. drafting unit as claimed in claim 1 is characterized in that this discontinuous textile fabric is linen thread.
18. the method by such as the discontinuous textile fabric of aforementioned arbitrary claim described drafting unit (10) drawing-off comprises:
-the sliver that formed by described textile fabric by first pair of feeding roller (12) drawing-off or the first step of strip (18), described first pair of feeding roller (12) can be with predetermined feeding speed towards the second counter extensioin roller (14) feeding sliver or strip (18), the drawing-off of described the second counter extensioin roller energy is by sliver or the strip (18) of described first pair of feeding roller (12) feeding
It is characterized in that it also comprises:
-by being arranged in the step of the described drawing-off of control device (11) control between described first pair of feeding roller (12) and described the second counter extensioin roller (14), wherein said control step is by the control roller (20 of at least the three pair of rotation, 22) provide the second drafting step, wherein first roller (20) is on a side of described sliver or strip (18), the second roller (22) is on the opposite side of described sliver or strip (18), described control roller (20,22) sliver or strip (18) from described first pair of feeding roller (12) are worked, in order to supply described sliver or strip towards described the second counter extensioin roller (14) with predetermined feeding speed.
19. method as claimed in claim 18, it is characterized in that it uses two control rollers (20,22), described two control rollers (20,22) basically become longitudinally to arrange with the feeding axis of described sliver (18), and mutually arrange in order to form departing from of adjustable size along the described feeding axis of described sliver (18).
20. method as claimed in claim 18, it is characterized in that it uses two control rollers (20,22), described two control rollers (20,22) basically arrange with the feeding direction of described sliver (18) with being orthogonal, wherein come during described the second drafting step, to regulate by this control roller (20 by flexibly retrain described the second roller (22) by means of elastic device (32), 22) be applied to pressure on described sliver or the strip (18), described elastic device (32) be installed in described framework (24) upper and with bracing or strutting arrangement (26) cooperation of described the second roller (22).
21. method as claimed in claim 18 is characterized in that this discontinuous textile fabric is linen thread.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| ITUD2007A000213 | 2007-11-09 | ||
| ITUD20070213 ITUD20070213A1 (en) | 2007-11-09 | 2007-11-09 | IRONING GROUP |
| PCT/IB2008/002986 WO2009060298A2 (en) | 2007-11-09 | 2008-11-07 | Drafting unit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101910482A CN101910482A (en) | 2010-12-08 |
| CN101910482B true CN101910482B (en) | 2013-04-24 |
Family
ID=40315074
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200880124432.6A Active CN101910482B (en) | 2007-11-09 | 2008-11-07 | Drafting unit |
Country Status (3)
| Country | Link |
|---|---|
| CN (1) | CN101910482B (en) |
| IT (1) | ITUD20070213A1 (en) |
| WO (1) | WO2009060298A2 (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2405039B1 (en) | 2010-07-07 | 2016-11-30 | Vantex Technologies GmbH | Drafting device for spinning machinery |
| DE102014110950A1 (en) * | 2014-08-01 | 2016-02-04 | Deutsche Institute Für Textil- Und Faserforschung Denkendorf | Roller stretching arrangement of a workstation of a staple fiber processing textile machine and textile machine equipped therewith |
| DE102015014421A1 (en) * | 2015-10-22 | 2017-04-27 | Saurer Germany Gmbh & Co. Kg | Drawframe and bearing for a shaft of a drafting system |
| CH716167A1 (en) * | 2019-05-09 | 2020-11-13 | Rieter Ag Maschf | Tear-off cylinder unit with a device for printing cylinders of pairs of tear-off cylinders of a combing machine. |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB422015A (en) * | 1933-12-08 | 1935-01-03 | Malcolm Bowditch Stone | Improvements in and relating to the drawing of bast and long leaf fibres |
| GB509493A (en) * | 1937-10-09 | 1939-07-10 | Mackie & Sons Ltd J | Improvements in and relating to spinning machines |
| GB653735A (en) * | 1947-06-09 | 1951-05-23 | Mackie & Sons Ltd J | Improvements in and relating to drawing heads for long staple fibres |
| US2624074A (en) * | 1949-10-03 | 1953-01-06 | Tmm Research Ltd | Roller-type drafting apparatus of textile spinning and analogous machinery |
| EP0903430A2 (en) * | 1997-09-23 | 1999-03-24 | Maschinenfabrik Rieter Ag | Spinning method and machine with condenser |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2252546A (en) * | 1936-10-29 | 1941-08-12 | Saco Lowell Shops | Sliver drawing mechanism |
| US3457597A (en) * | 1966-10-12 | 1969-07-29 | Toyoda Automatic Loom Works | Roller drafting system for spinning machinery |
-
2007
- 2007-11-09 IT ITUD20070213 patent/ITUD20070213A1/en unknown
-
2008
- 2008-11-07 CN CN200880124432.6A patent/CN101910482B/en active Active
- 2008-11-07 WO PCT/IB2008/002986 patent/WO2009060298A2/en active Application Filing
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB422015A (en) * | 1933-12-08 | 1935-01-03 | Malcolm Bowditch Stone | Improvements in and relating to the drawing of bast and long leaf fibres |
| GB509493A (en) * | 1937-10-09 | 1939-07-10 | Mackie & Sons Ltd J | Improvements in and relating to spinning machines |
| GB653735A (en) * | 1947-06-09 | 1951-05-23 | Mackie & Sons Ltd J | Improvements in and relating to drawing heads for long staple fibres |
| US2624074A (en) * | 1949-10-03 | 1953-01-06 | Tmm Research Ltd | Roller-type drafting apparatus of textile spinning and analogous machinery |
| EP0903430A2 (en) * | 1997-09-23 | 1999-03-24 | Maschinenfabrik Rieter Ag | Spinning method and machine with condenser |
Also Published As
| Publication number | Publication date |
|---|---|
| ITUD20070213A1 (en) | 2009-05-10 |
| CN101910482A (en) | 2010-12-08 |
| WO2009060298A2 (en) | 2009-05-14 |
| WO2009060298A3 (en) | 2009-07-16 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201506876U (en) | A spinning machine active filament feeding roving rack | |
| EP2112258B1 (en) | Device and method for winding a roving onto a bobbin | |
| CN103981601B (en) | A kind of rotary method improving yarn surface structure of positive gripping | |
| CN101910482B (en) | Drafting unit | |
| CN109750394B (en) | Device and method for false twisting yarn and device for producing yarn | |
| CN203700640U (en) | Three-carrier-roller positive double-core covering yarn production device | |
| CN203546279U (en) | Device capable of reducing yarn hairiness for ring spinning frame | |
| US4365464A (en) | Apparatus to uniformly control wrapping a filament around the surface of a spun core yarn during ring spinning | |
| CN210596383U (en) | Drafting device with adjustable drafting gauge and linen spinning frame thereof | |
| CN104294429A (en) | Filament tension real-time adjustment device | |
| CN108754701B (en) | A kind of untwisting twister, superfine yarn spinning machine and superfine yarn Yarn spinning method | |
| US2115313A (en) | Apparatus for crimping textile fibrous material | |
| CN106687628B (en) | Apparatus for producing core-spun yarn | |
| US2869315A (en) | Spinning apparatus | |
| Islam | Comparing quality parameters of yarn produced by ring, rotor, and compact spinning system | |
| CN210763654U (en) | Yarn guide with adjustable angle for textile machinery | |
| CN202492635U (en) | Spinning wool four-apron drafting and driving device | |
| US2769209A (en) | Lap or bobbin feed system for spinning machines | |
| GB2212528A (en) | Belt-type false twisting device | |
| CN212103132U (en) | Spinning apparatus with synchronous rotation control of fiber arrangement structure | |
| CN102971455B (en) | Drafting device for spinning machinery | |
| RU2164567C1 (en) | Roving and roving manufacture method | |
| CN103255512B (en) | Stretching unit for stretching a rove | |
| CN201506878U (en) | Filament positioning active feeding device for embedded composite spinning yarn | |
| US1370407A (en) | Spinning or roving frame |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |