CN101845691B - Device for individually actuating open-end spinning rotors - Google Patents
Device for individually actuating open-end spinning rotors Download PDFInfo
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- CN101845691B CN101845691B CN201010148977.XA CN201010148977A CN101845691B CN 101845691 B CN101845691 B CN 101845691B CN 201010148977 A CN201010148977 A CN 201010148977A CN 101845691 B CN101845691 B CN 101845691B
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- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01H—SPINNING OR TWISTING
- D01H4/00—Open-end spinning machines or arrangements for imparting twist to independently moving fibres separated from slivers; Piecing arrangements therefor; Covering endless core threads with fibres by open-end spinning techniques
- D01H4/04—Open-end spinning machines or arrangements for imparting twist to independently moving fibres separated from slivers; Piecing arrangements therefor; Covering endless core threads with fibres by open-end spinning techniques imparting twist by contact of fibres with a running surface
- D01H4/08—Rotor spinning, i.e. the running surface being provided by a rotor
- D01H4/12—Rotor bearings; Arrangements for driving or stopping
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01H—SPINNING OR TWISTING
- D01H4/00—Open-end spinning machines or arrangements for imparting twist to independently moving fibres separated from slivers; Piecing arrangements therefor; Covering endless core threads with fibres by open-end spinning techniques
- D01H4/04—Open-end spinning machines or arrangements for imparting twist to independently moving fibres separated from slivers; Piecing arrangements therefor; Covering endless core threads with fibres by open-end spinning techniques imparting twist by contact of fibres with a running surface
- D01H4/08—Rotor spinning, i.e. the running surface being provided by a rotor
- D01H4/12—Rotor bearings; Arrangements for driving or stopping
- D01H4/14—Rotor driven by an electric motor
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Textile Engineering (AREA)
- Spinning Or Twisting Of Yarns (AREA)
- Centrifugal Separators (AREA)
- Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)
Abstract
Device for individually actuating the rotation of the open-end spinning rotor (1) in which the shank of the rotor is supported with a twin disc device in which one or more of the bearings of the parallel shafts of the twin disc support consist of the individual actuation motor, giving the rotary motion to both of the shafts of the twin disc support that in turn transmit it to the shank (2) of the rotor (1).
Description
Technical field
The present invention relates to " free end " spinning, namely open-end spinning.Free-end spinning machine consists of a plurality of independent spinning units conventionally, and this spinning unit is arranged on two fronts of machine, and provides service by common service unit.Spinning unit is mainly comprised of spinning rotary cup and collector unit, thereby spinning rotary cup is by producing line by the fiber twisting of the described singularization of the rove being provided by yarn feeding assembly, collector unit is collected from the yarn of revolving cup and is wound up in bobbin, at described bobbin, reach the standard grade and be wound with coil form by feed carrier, feed carrier on the outer surface of bobbin of rotation itself with the mode distributing line of axially reciprocating.
Background technology
The productivity ratio of free-end spinning machine strictly depends on the rotary speed of spinning rotary cup, must produce the yarn with every meter of clear and definite twisting count.In the evolution of free end technology, the rotary speed of revolving cup has been significantly increased over 150,000 revs/min in nearest free-end spinning machine.In established free end technology, on machine two fronts, the actuating of the revolving cup of open-end-spinning unit aligned with each other is implemented by common driving belt, described driving belt axially moves and---is conventionally known as axis body---at axle according to the front of machine and above applies tangential tractive force, this axle is positioned at after spinning rotary cup, described band keeps being coupling tactilely with this by pressure roller, and described pressure roller is known as guide wheel.Such actuating device produces some resultant results.The rotary speed of the spinning rotary cup arranging along the front of machine is different to afterbody from the head of machine, but tends to especially for longer machine, reduce.
Increase along with the distance of the actuating point from driving belt, described driving belt axially moves according to the front of machine and driving torque is passed to along such a positive spinning unit of arranging, the tension force of spinning unit is along with the increase from activating the distance of point progressively reduces, and changes thus transmissible torque.Such species diversity is transformed in the spinning unit arranging along the front of machine gives yarn different twisting counts.This defect significantly occurs during in steady operational status at revolving cup, but at revolving cup, can become the defect of larger degree during in transition stage.
For such actuation configuration, each spinning unit is equipped with to be braked with clutch apparatus to operate separately single spinning unit, according to " disconnecting-closed (off-on) " logic, it is separated from common actuating device in transition stage.
Such actuating that spinning rotary cup is activated by common driving band has met the demand of the high rotation speed of revolving cup well, but its other side for open-end-spinning has serious defect.Between all parts of these shortcomings based on by machine, corresponding positive drive is compared and produces, in transition stage, produce especially, during joint again after incipient stage and each yarn breakage, produce, but also, due to above all such facts, speed is brought up to current numerical value and cause the energy resource consumption of transmission to be generally exponential increase.
The concrete defect of conventional system is as follows:
-can not during joint step again, accurately control the speed of revolving cup, its must carry out in incomplete speed (partial speed) (stable operation speed again joint be impossible).In order to have stable quality in joint, when joint again, no matter the axial coordinate (coordinate) of spinning unit, rotor speed is constant is very important.Really, must consider that the tension force of common driving band progressively reduces along with the increase of the distance from actuating head, and thus, therefore transferable torque changes.At present at joint stage medium velocity again, reduce by operating " disconnection-closure " brake of revolving cup and carry out in the mode being similar to, and do not there is the precision of actual hope;
-can not be at the acceleration (acceleration ramp) once there is again joint and just control revolving cup, similarly other parameter controlled (band feed to and the extraction of yarn, by appointment, be used for again the specific device of the maintaining car of joint);
-along with operating rate increases and the high-energy source consumption of the exponential increase that causes, due to the energy loss of driving belt, described driving belt stands a considerable amount of trickle deflections at each revolving cup and guide wheel place and at the driving wheel of the head of machine with at the reverse wheel place of the afterbody of machine.Along with speed increases, the rotary speed of wheel and the tension force corresponding increase in ground being applied to the required larger power of upper transmission;
-very large noise, because many elements are with High Rotation Speed and the bearing imposed load to them, and because band moves linearly to surpass 70 meter per seconds the aerodynamic noise producing along machine;
The braking problem of-spinning rotary cup: it should stop within the very short time and before spinning unit is opened.In traditional open-end-spinning unit, the actuating of brake and the axis body of revolving cup are synchronizeed with separated actuating and the opening of revolving cup of band, can produce danger thus;
-act on the Fast Wearing of the brake block on the axis body of revolving cup, need frequent effort and replacing with high costs, and the most important thing is in the inhomogeneous performance of transition stage; This defect is not easy to differentiate, is in addition also not easy to control joint quality and/or the joint success rate of each spinning unit;
The pollution of-power-transmission system: band, guide wheel, revolving cup and wheel.Fiber and comprising from the dust deposit of the wearing and tearing of brake block being with of motion, and spread on all parts of machine.Therefore it must carry out often and spend huge clean operation, particularly in drive area, and due to the Fast Wearing of band tape swapping more.
In order to overcome these defects, therefore the recent tendency activating for the high speed of spinning rotary cup points to the independent driving of the revolving cup of each open-end-spinning unit.
In the prior art, with respect to the suggestion of independent driving be propose recently and have a lot, for example, at patent US4,916,891, US6,516,601, US6,590, in 307 and US6,668,536, in patent application US2005/0279076 and US2007/0132329, in patent application DE102005023517, DE102006043376, WO2003/038166, WO2005/075719 and WO2008/000335.
In order to implement this independent actuating with 150,000 revs/min of above speed, owing to there being at present at a high speed technical problem.For the direct actuating by motor, the direct driving of revolving cup needs motor to have 2500Hz and above supply frequency, as a kind of replacement form of motor, has proposed to use the air turbine of the axis body that is connected to revolving cup.A significant obstacle of this independent driving suggestion of extensive use is the reliability of the current bearing activateding with this rotary speed in serving continuously; Many above-mentioned prior art documents relate to use non-contact magnetic bearing, to support motor and the spinning rotary cup being directly linked together.
Summary of the invention
The present invention relates to a kind of for driving separately spinning rotary cup---namely " free end "---with the device running up.
The object of the invention is to manufacture a kind of for driving separately the device of open-end spinning rotors, it has overcome the defect of the device proposing in prior art, and has higher reliability, the higher efficiency of spinning machine and the output of spinning machine and the better quality of the yarn that will obtain.
The technical scheme proposing in order more clearly to describe the technical problem that will solve and the present invention, in the following description, therefore the form with nonrestrictive example proposes a kind of independent actuation configuration, and clear and definite prerequisite is that it also can have superiority and use different motors.
Individually actuating device for open-end-spinning unit according to the present invention is limited with its critical piece first claim, and the clear and definite and restriction in the dependent claims of its version and preferred embodiment.
In order to clearly show that Characteristics and advantages of the present invention, with reference to being described in its exemplary embodiment shown in Fig. 1-3 as nonrestrictive example.
The individually actuating configuration of open-end spinning rotors is illustrated schematically in the left side view that the front view that represents with Reference numeral A, top view that Reference numeral B represents and reference number C represent.This configuration using is known in the art and support with " two disk " known spinning rotary cup, for example, according to patent US4, and 916,891 and WO2003/038166.This support member consists of two base support, and each of this base support leans against two pairs of upper blocks on disk by a pair of coaxial disk and an axial compression by revolving cup and form.The axle of the axle of spinning rotary cup, two pairs of support disk and the axle of guide wheel are parallel.
About this point, should note, in " two disk " support system, when saying that two axles are parallel, we refer to their " substantially parallel ", because the measure in fact adopting be the summary low dip that their are installed to produce axial force on the revolving cup of rotation, this axial force makes revolving cup press its cod below and prevent any axially-movable.When the disk with parallel axes of describing " two disk " support member to time, this is therefore applicable.
According to the document of these prior aries, at patent US4, in 916,891 situation, " two disk " support member is activated by the separate electrical motor that is connected to upper block, or by being connected to of the support disk centering separate electrical motor to support disk, activates the in the situation that of WO2003/038166.
In the document of these prior aries, find that the axis body acceptance of spinning rotary cup O-E is from the driving torque of independent spinner member, and must keep successively two other element rotation, be the necessary driving torque of resistance that overcomes them to this two other element transmission.Therefore such two idle running elements form the brake of spinning rotary cup rotation in this embodiment.
Accompanying drawing explanation
Particularly, foregoing proposes in different embodiment of the present invention hereinafter:
-in Figure 1A, B, C, thering is the support disk of an independent motor and " two disk ", the support disk of described " two disk " is coplanar and according to their excircle toward each other, and is connected with other a pair of support disk by a driving belt,
-in Fig. 2 A, B, C, there are two motors, a motor of support disk of every pair " two disk ", the support disk of described " two disk " is coplanar and according to their excircle toward each other,
-in Fig. 3 A, B, C, there are two motors, a motor of support disk of every pair " two disk ", the support disk of described " two disk " is not coplanar, but axially staggered; Such embodiment can make the propping up of axis body of " two disk " upper revolving cup lean on highly rising, avoids axis body the box-uping between two circular discs of this revolving cup.
The specific embodiment
The accompanying drawing of above-mentioned three embodiments, according to three front views, top view and side views, show critical piece of the present invention: motor, two disk support, the spinning rotary cup with relevant axis body, the supporting construction of guide wheel and spinning unit, wherein mark D and S represent right side and element left side, Fig. 2 A, B, C with reference to having the embodiment of two motors, illustrate following element:
-1) rotor of the spinning rotary cup of High Rotation Speed,
-2) the columned axis body of spinning rotary cup, it rests on the back side of cod,
-3) cod, it remains on a definite axial coordinate place by revolving cup,
-4
s) stator of the first motor (be positioned at left side), this first motor comprises spring bearings its axle and the two disk support in left side
-5
s) axle of the first motor
-4
d) stator of the second motor (being positioned at right side), this second motor comprises spring bearings its axle and the two disk support in right side
-5
d) axle of the second motor, two axles 5 are parallel to each other and be parallel to the axis of axis body 2,
-6
swith 6
d) left side and front, the right side disk of two disk support, the axis body 2 of spinning rotary cup 1 rests on this left side and front, right side disk, and the axle of this left side and front, right side disk and their motor forms one,
-7
swith 7
d) left side and the back side, the right side disk of two disk support, the axis body 2 of spinning rotary cup 1 rests on this left side and the back side, right side disk, and the axle of this left side and the back side, right side disk and their motor forms one,
(as mentioned above, in Fig. 1-2, right side and the coplanar setting of left side disk and according to their excircle toward each other, and they are not coplanar in Fig. 3, but axially staggered and be relatively close together thus their axle between distance be less than their diameter),
The fixed support structure of-whole actuating device,
-9) guide wheel on the axis body 2 of spinning rotary cup 1, to keep revolving cup level and for good and all to rest on disk 6
s, D, 7
s, Dtwo disk support on, described disk 6
s, D, 7
s, Dbe pressed against on the axis body of revolving cup, its periphery disk 20 is around axle 21 idle running, and described axle 21 is parallel to disk 6
s, D, 7
s, Daxle 5.Such axle 21 is supported by support bar 22, described support bar 22 at steady pin 23 places hinged and by spring 24 to pressing down, to keep permanent of axis body 2 to lean on,
-10
s) rotor of the first left motor,
-10
d) rotor of the second right motor,
" two disk " bracing or strutting arrangement of the axis body 2 of spinning rotary cup 1 is schematically similar to for example according to the bracing or strutting arrangement using in traditional actuating device with longitudinal driving belt of aforesaid US Patent No. 4,916,891.Specific characteristic of the present invention is the rotor of one or two individually actuating motor to replace with the spring bearing of one or two " two disk ", and the shell of described individually actuating motor rests on the fixed structure of machine.The axle 5 of the revolving cup 10 of such a or two motors is outstanding and total with " two disk " support member in their end: disk 6
s, D, 7
s, Dbe fixed on the ledge of these axles.Two this disks are right---right side and left side disk are right---is motorized and transmits the torque of ordering about axis body 2 rotation, and they are no longer as according to United States Patent (USP) 4,916, and 891 tradition " two disk " support member equally dallies.The spring bearing of the rotor 10 of motor is also as disk 6
s, D, 7
s, Dsupport member.The axis body 2 of spinning rotary cup is by motor-driven disk 6
s, D, 7
s, Douter field friction dragged rotation, the axis body of this spinning rotary cup is pressed against on motor-driven disk by guide wheel 9.
In the drive arrangements of Fig. 2 A, B, C, show as an example two motors, 5 one motors of every axle, are also feasible but different technology activates scheme, the main contents in these possibility schemes are as follows:
-Figure 1A, B, C: at disk to 6
s, D, 7
s, Din a disk to upper separate electrical motor, for example on the right side to disk 6
d, 7
don there is motor 4
d, and another pair of discs 6
s, 7
sby transmission device, dragged.For example,, from the axle 5 of the same motor of pair of discs
darrive left side disk to 6
s, 7
s axle 5S to adopt Flat belt transmission 30 be feasible, therefore the two pairs of disks be all motor-driven and can transmitting torque to the axis body of revolving cup;
-according to the embodiment of Fig. 3 A, B, C and disk 6 wherein
s, D, 7
s, Dcoplanar formerly embodiment is different,
-only as an example, it shows by similar two driven by motor of the configuration with Fig. 3---the axle 5 of two disk support
swith 5
dnear each other, make the support disk 6 of the axis body of revolving cup
s, D, 7
s, Daxially staggered, the axle of two disk support interpenetrates and revolving cup is supported on to higher height.Such a embodiment has avoided the axis body of revolving cup at disk 6
s, D, 7
s, Dbetween the risk of box-uping, and reduced the horizontal volume of device.This is applicable to implementing higher gearratio.
In by two motor-driven situations, motor of every pair of disk, therefore these two motors are worked in coordination in the generation of torque and in transmitting torque to the process of spinning rotary cup, no matter be in steady operational status or transition stage, the speed of two motors is all equated by strict maintenance.
According to the preferred embodiment of the present invention, motor-driven optimal way estimates to utilize motor, and the first exemplifying even above actuating mode (Fig. 1) also can be by different motor activated, for example compressed air turbine.In motor, special recommendation synchronous motor, the preferred FREQUENCY CONTROL motor of brushless or other type has suitable high synchronization between mutually, as shown in Figures 2 and 3 the in the situation that of two motors.
Actuating for single spinning rotary cup, need small-power and compared with the motor of low torque, therefore the actuating of motor can directly be controlled by a microprocessor or control panel, its can independent role in each spinning unit or even also can serve a plurality of spinning units simultaneously.
Two pairs of right and left disks 6
s, D, 7
s, Dpreferably there is identical diameter and be assembled in its motor or stator 4
s, Dthe axle 5 of parallel and level
s, Dupper, according to wheelbase in the embodiment of the configuration of Fig. 1 and 2 (axle base), be slightly larger than the diameter of disk, and according to the configuration wheelbase of Fig. 3, be less than on the other hand the diameter of disk.
In order to obtain enough transmissions, disk 6 between motor and spinning rotary cup
s, D, 7
s, Dthe preferred diameter of size remain between 60 millimeters-100 millimeters, and the preferred diameter of size of the axis body 2 of spinning rotary cup 1 remains between 6 millimeters-10 millimeters, the gearratio between motor and spinning rotary cup 1 remains between 6-15.
Conventionally, guide wheel 9 supports short than " the two disk " that be positioned at below, and rests on the axis body 2 of revolving cup 1, is positioned at disk to 6
s, D, 7
s, Dbetween gap in.On supporting, a spring that it is exerted pressure 24 is installed, if necessary, this spring can easily raise to discharge the axis body of revolving cup.
Separately indirect actuating device for open-end-spinning unit according to the present invention is with respect to the directly tangible progress of actuating device tool separately of prior art.During these are progressive the most significant one be for motor and for the bearing in indirect actuating scheme according to the present invention sharply the reducing of required rotary speed.Though obvious two pairs of disks be therefore in steady operational status or transition stage all driven with identical speed.
Still with reference to the required very high rotary speed of spinning rotary cup, the use of " two disk " support member arranging between motor and spinning rotary cup allows conclusive speed reducing ratio.For example, by making the outer dia of two disks 6,7 equal ten times of axis body 2 diameters of spinning rotary cup, obtain the gearratio of 1: 10: still in order to give revolving cup the required speed of 150,000 revs/min, the rotary speed of the needs of motor and relative bearing is reduced to 15,000 revs/min.For motor and bearing, in continuous use procedure, the steady rotation speed of required such size is lower and more acceptant.With the motor of 250Hz work and FREQUENCY CONTROL and fewer and more reliable with the motor requirement more required than those direct driving spinning rotary cups of the mechanical bearing of 15,000 revs/min of work.Such motor and bearing are provided by the manufacturer that is correlated with and carry out routine and sell.
In other advantage obtaining with respect to traditional free-end spinning machine:
-lower energy resource consumption saves approximately 25% in the actuating of motor;
-noise sharply reduces, because eliminated the maximum noise source of free-end spinning machine;
-simplifying spinning unit---reduces its demand to maintenance and spare unit---because eliminated it from the separated braking of total actuating device and clutch apparatus;
-higher quality of connection, because can accurately control the speed of joint and acceleration binding clip subsequently again;
-along the constant airspeed of the spinning unit in machine front, and it is constant indirectly to give the viscosity of yarn, avoids the typical case of belt driver to slide;
-remarkable the demand reducing the clean and maintenance of spinning unit.
With according to US Patent No. 4,916,891 or the technical scheme of use " two disk " support member of WO2003/038166 compare, technical scheme according to the present invention makes it possible to be transmitted torque to by two pairs of support disk the axis body of spinning rotary cup O-E, than much bigger (for the large twice of situation of identical system physical dimension and identical guide wheel load) that allowed by single rotary-actuated element, and can avoid this spinner member as the brake of the rotation of spinning rotary cup.
Claims (7)
1. the device rotating for individually actuating open-end spinning rotors (1), rotatablely move and by this device, be indirectly delivered to the axis body (2) of this open-end spinning rotors, wherein said axis body is supported by so-called " two disk " device, should " two disk " install by front disk (6
s, D) and back side disk (7
s, D) these two pairs of disks formations, described two pairs of disks are mounted to the axle (5 of the axis that is parallel to described axis body (2)
s, 5
d) on, described axis body (2) is held a face of cylinder by described two pairs of disks and is pressed against on described two pairs of disks by guide wheel (9), described guide wheel (9) consists of the 3rd pair of disk (20), is assemblied in two axles (5 that are parallel to described two pairs of disks
s, 5
d) axle (21) upper,
It is characterized in that: the axle (5 of " two disk "
s, 5
d) one or two bearing by the rotor (10 of one or two individually actuating motor
s, D) bearing form, described motor has their shell is rested on to the stator (4 on fixed structure (8)
s, D), produce and be used for activating two axles (5
s, 5
d) rotation and the motion of front disk and these two pairs of disc rotaries of back side disk, described two pairs of disks are delivered to this motion by friction again the axis body (2) of described open-end spinning rotors (1).
2. the device for individually actuating open-end spinning rotors (1) rotation according to claim 1, it is characterized in that: described actuating is carried out by independent motor, described motor is provided with stator in the pair of discs of described two pairs of disks, another pair of discs is pulled by being connected to the transmission device (30) of same motor, no matter to make described two pairs of disks be in steady operational status or transition stage is all driven with identical speed, and can be by for activating the transmission of torque of rotation to the axis body of described open-end spinning rotors.
3. the device for individually actuating open-end spinning rotors (1) rotation according to claim 1, is characterized in that: described actuating is by having described stator (4
s, D) two motors carry out, motor of every pair of disk, rotating torques is being passed in the process of described open-end spinning rotors (1), no matter be in steady operational status or transition stage, described disk all matches with the speed of described two motors, and the speed of described two motors is identical.
4. the device for individually actuating open-end spinning rotors (1) rotation according to claim 1, is characterized in that: described actuating is carried out by the synchronous motor of FREQUENCY CONTROL.
5. the device for individually actuating open-end spinning rotors (1) rotation according to claim 4, is characterized in that: described actuating is carried out by brushless electric machine.
6. the device for individually actuating open-end spinning rotors (1) rotation according to claim 1, is characterized in that: with the gearratio between the motor between 6-15 and revolving cup (1), carry out and activate.
7. the device for individually actuating open-end spinning rotors (1) rotation according to claim 1, is characterized in that: the axle (5 of described pair of disk
s, 5
d) be set to open with the separating distance less than the diameter of described two pairs of disks, so that described disc shaft is to staggered.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| ITMI2009A000473 | 2009-03-26 | ||
| ITMI2009A000473A IT1393534B1 (en) | 2009-03-26 | 2009-03-26 | OPEN-END SPIN ROTOR INDIVIDUAL OPERATION DEVICE |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101845691A CN101845691A (en) | 2010-09-29 |
| CN101845691B true CN101845691B (en) | 2014-02-26 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201010148977.XA Active CN101845691B (en) | 2009-03-26 | 2010-03-25 | Device for individually actuating open-end spinning rotors |
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| Country | Link |
|---|---|
| EP (1) | EP2233617B1 (en) |
| CN (1) | CN101845691B (en) |
| IT (1) | IT1393534B1 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103741278A (en) * | 2013-12-31 | 2014-04-23 | 浙江日发纺织机械股份有限公司 | Micro-motion yarn guiding drive device of rotor spinning machine |
| DE102015013484A1 (en) | 2015-10-16 | 2017-04-20 | Saurer Germany Gmbh & Co. Kg | Open-end rotor spinning device with a spinning rotor, which is mounted with its rotor shaft in the gusset of a support disk bearing |
| DE102016108859A1 (en) * | 2016-05-13 | 2017-11-16 | Rieter Ingolstadt Gmbh | Spinning rotor for an open-end spinning device with a friction-increasing coating and open-end spinning device |
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2009
- 2009-03-26 IT ITMI2009A000473A patent/IT1393534B1/en active
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2010
- 2010-02-11 EP EP20100153254 patent/EP2233617B1/en active Active
- 2010-03-25 CN CN201010148977.XA patent/CN101845691B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1571869A (en) * | 2001-08-21 | 2005-01-26 | 里特因戈尔斯塔特纺纱机械制造有限公司 | Arrangement for open-end rotor spinning |
| CN1445395A (en) * | 2002-03-16 | 2003-10-01 | W.施拉夫霍斯特公司 | Spinning device |
| CN2692168Y (en) * | 2003-12-02 | 2005-04-13 | 浙江精工科技股份有限公司 | Rotary cup driving device for rotary cup spinning machine |
| CN1733989A (en) * | 2004-08-10 | 2006-02-15 | 东台纺织机械有限责任公司 | Spinning unit of rotor spinning |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101845691A (en) | 2010-09-29 |
| EP2233617A1 (en) | 2010-09-29 |
| EP2233617B1 (en) | 2013-04-03 |
| IT1393534B1 (en) | 2012-04-27 |
| ITMI20090473A1 (en) | 2010-09-27 |
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