CN102041589B - Piecing method for open-end rotor spin machine - Google Patents
Piecing method for open-end rotor spin machine Download PDFInfo
- Publication number
- CN102041589B CN102041589B CN201010516056.4A CN201010516056A CN102041589B CN 102041589 B CN102041589 B CN 102041589B CN 201010516056 A CN201010516056 A CN 201010516056A CN 102041589 B CN102041589 B CN 102041589B
- Authority
- CN
- China
- Prior art keywords
- fiber
- joint
- spinning
- cylinder
- rotor
- 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.)
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Classifications
-
- 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
- D01H4/48—Piecing arrangements; Control therefor
- D01H4/50—Piecing arrangements; Control therefor for rotor spinning
Abstract
The present invention relates to a piecing method for an open-end rotor spin machine. According to the invention, before a piecing process, some parameters which represent piecing are input by an operator from a control mechanism (10) of the open-end rotor spin machine. According to the parameters, the control mechanism (10) calculates an added length (SADD) and height (addn) of the fibre and fibre flight time (tfibre flight). Furthermore according to the calculation result, a fibre band supply cylinder is then started and actuated so that the fibre supply cylinder is started with a maximal feeding speed which is preset by the added height (addn) of the fibre. The feeding speed of the fibre band supply cylinder is reduced to a minimal value when the added length (SADD) is finished. Furthermore, correspondingly with the operation of a spinning rotor, the feeding speed of the fibre band supply cylinder raises to the preset standard value again.
Description
Technical field
The present invention relates to the jointing method for open-end rotor spinning unit.
Background technology
In the evolution of open-end spinning machine, not only realize sizable growth of the productivity ratio of these weaving looms, and can significantly improve the quality of the yarn product of production.In addition, after spinning is interrupted, the needs of inevitable joint are significantly increased gradually, in other words, the also quality of the joint based on them importantly of the success of automatic open-end spinning machine.
In order to ensure spinning position or the adapter assembly of being automatically careful the spinning position of weaving loom produce as much as possible all the time the joint consistent with yarn, joint process is further improved gradually continuously, causes the quantity of the Joint Parameter of adjusting at controlling organization place after batch replacing significantly to increase.
But, in open-end spinning machine, there is a problem, that is, at each spinning position place, particularly, in the region of fiber band opening mechanism, for example, due to various drafts and/or yarn twist, usually provide very different conditions.
For the almost unavoidable very disadvantageous condition of joint compensation for suitable, and in order to produce all the time the joint with in fact consistent with yarn outward appearance, therefore develop in the past the whole bag of tricks that relates to joint process.
A kind of joint process has for example been described in DE3903782C2, wherein in the time that joint process starts, fiber feedway is by demand working, first consequent fibre stream is deflected on the path between the fiber collecting face in fiber feedway and spinning rotor, in other words, be removed until return to by the yarn drawing back from cross winding bobbin the actual joint process that starts.This means in these known jointing methods, consistent with returning of yarn, the first directed fibre stream of opening is fed on the fiber collecting face of spinning rotor with certain delay.The yarn being produced by the continuous accumulation of the fiber of supplying with is extracted out from open-end spinning device by yarn pull-out mechanism.
Except wasting many good fibers, in the shortcoming of these known jointing methods, the most important thing is that the project organization of such open-end spinning device is relatively costly.In other words, such spinning apparatus all must have a mechanism, and by this mechanism, first the fiber of being supplied with by fiber feedway from the beginning can be deflected and remove.
In addition, for example, from DE4030100A1 or from the people's such as Raasch publication " Automatisches Anspinnen beim OE-Rotorspinnen ", MELLIAND Textilberichte4/1989, known joint method in 251to256 page, wherein, before actual joint process starts, carry out bundle fiber leveling.Guarantee in the time that jointing method starts by such bundle fiber leveling, provide all the time identical condition at spinning position, and irrelevant with downtime separately.
In this known jointing method, actual joint process is from the startup of spinning rotor, and this spinning rotor is accelerated to operating rate continuously by the tangential band acting on armature spindle.In the time reaching predetermined joint rotor speed, the pre-supply of fiber starts, and in other words, for form fibrous ring in rotor slot, a certain amount of fiber is fed in rotary spinning rotor.The pre-supply of fiber accurately occurring in predetermined time section, is then cut off conventionally.After pre-supply has been cut off, fiber returns to starting, and ready the end of a thread of the yarn therefore drawing back from mound bobbins arrives spinning rotor.The end of a thread consumes the short time in the rotor slot of spinning rotor, in this process, takes fibrous ring apart, is then extracted out with draw speed from open-end spinning device, and this draw speed mates with the instantaneous velocity of rotation of the spinning rotor just turning round.Along with the extraction of yarn starts, fiber is supplied with and is also turned on again.
When occur certain delay until while reaching required fibre stream (reaching required fibre stream by the diameter deviation causing after joint), fiber is supplied with and was not preferably switched on for a long time before the extraction of yarn starts.The draw speed of yarn and fiber are supplied with and are constantly adapted to rotor speed, until reached operating rotor rotating speed.
Because not only in the time that cut staple is supplied with fibre stream must lag behind maybe in the time connecting fiber and supply with fibre stream must delay start, and the feed speed of supplying with when fiber fibre stream also deferred reaction while increasing, this reaction is by the yarn diameter fluctuation that causes occurring after joint, so also adopt so-called supply to increase.In other words, there is 100% required fibre weight in therefore guaranteeing to be engraved in spinning rotor in the time of each extraction in feed speed increase compared with desired value that fiber is supplied with.
Summary of the invention
From above-mentioned prior art, the present invention is based on the object of a kind of jointing method of exploitation, this jointing method allows operating personnel promptly to set up good and firm joint from a small number of parameters that characterizes joint.
According to the present invention, this object realizes by the jointing method for open-end rotor spinning unit of first aspect.This open-end rotor spinning unit has: spinning rotor, and this spinning rotor is to rotate in the rotor case loading in negative pressure at a high speed, there is the fiber band opening mechanism of opening roller, and fiber band is supplied with cylinder, this fiber band is supplied with cylinder and can be activated with prescribed manner, wherein, the ready veil electric drawing back from mound bobbins is fed in described spinning rotor, and the yarn of producing is extracted out from described open-end spinning device, described jointing method is characterised in that, before the first joint process starts, the parameter that characterizes this joint is inputted at the controlling organization place of open-end spinning machine by operator, according to described parameter, described controlling organization calculates length and height and the fiber flight time that required fiber increases, according to calculated value, described fiber band is supplied with cylinder and is then activated and activated, making described fiber band supply with cylinder starts with the predetermined maximum feed speed of described height being increased by described fiber, the described feed speed that described fiber band is supplied with cylinder is reduced to minimum of a value in the time that the described length of described increase finishes, and last, be adapted to the running of described spinning rotor, the described feed speed that described fiber band is supplied with cylinder rises to predetermined standard value again.
According to method of the present invention, before new joint process starts, preferably, as described in second aspect, some characterize the parameter (parameter " joint thickness-coarse adjustment ", " joint thickness-fine setting " and " joint length ") of joint and are inputted at the controlling organization place of open-end spinning machine by operator, described controlling organization calculates according to parameter length and height and the fiber flight time that required fiber increases immediately, described method also has the following advantages,, no longer need high-quality staff to set up senior joint.In other words the staff who, no longer needs to have special knowledge produces the joint consistent with yarn.In the time of the holding intelligible parameter and must be transfused to described controlling organization and be hopeful successful joint process to start of minority only, due to the favourable processing of described parameter in described controlling organization, so for operator, described joint process is not only very easy to, and very effective.In other words, as described in the 5th aspect, described controlling organization guarantees that driver time interval with accurate Calculation before the taking-up of described yarn starts of fiber band supply cylinder starts, and activated in described process, making described fiber band supply with cylinder starts with the predetermined maximum feed speed of height being increased by fiber, thereby guarantee that required fibrous ring forms in spinning rotor, and in yarn diameter, required fibre weight exists all the time.When the length increasing to fiber finishes, the described feed speed that described fiber band is supplied with cylinder is reduced to minimum of a value, thereby adapts to the running of described spinning rotor, again rises to the predetermined standard value of operating rate by described spinning rotor.
According to the additional advantage of method of the present invention be, not only obviously arrive quickly regular spinning state than previous conventional method, supply with the ventilation of only depending on described spinning rotor speed and selection at fiber band described in this rule spinning state, and the supply of described fiber is also modified.In other words because avoided that previous traditional described fiber band supplies with in the middle of cut off, so supply with at described fiber band eachly start or stop operating period, the inevitable skew that the described fiber being caused by the fiber flight time is supplied with is reduced to minimum.
As described in the third aspect, in favourable embodiment, in described controlling organization, calculate the described fiber flight time according to the input of described parameter " joint thickness-coarse adjustment ", the described fiber flight time pre-determined before described yarn pull-out, must start the time interval that described fiber is supplied with.
In addition, as described in fourth aspect, described parameter " joint thickness-fine setting " is transfused to described controlling organization and pre-determines the size of the fibre weight of increase, described controlling organization together with described parameter " joint length ", calculates described height and described length that described fiber increases by means of the size of the fibre weight of described increase.
But in fact, if with expect contrary, joint profile does not show satisfied result, the described parameter that also can revise execution is inputted and no problem.
In other words, where necessary, can improve described joint profile in simple mode by the parameter input of proofreading and correct.
Brief description of the drawings
To the present invention be described below in further detail by means of embodiment shown in the drawings, wherein:
Fig. 1 illustrates the schematic diagram of the spinning position of open-end spinning machine, uses according to jointing method of the present invention at this open-end spinning machine place;
Fig. 2 illustrates the flow chart of joint process;
Fig. 3 is illustrated in the controlling organization when implementing according to jointing method of the present invention.
Detailed description of the invention
Fig. 1 illustrates the self-centered spinning position 4 of open-end spinning machine, in other words, construct and be equipped to make to implement at this place by describe in further detail below by means of Fig. 2 and 3 according to the stereogram of the spinning position of jointing method of the present invention.
As everyone knows, such self-centered spinning position 4 has respectively spinning apparatus 5, and the spinning parts of this spinning apparatus 5 is driven by single electric motor.In other words, spinning apparatus 5 has spinning rotor 44, and this spinning rotor 44 can rotate with height degree of turning by motor 43.In addition, spinning apparatus 5 has opening roller 46 and the fiber band of tape drive 45 and supplies with cylinder 47, and this fiber band is supplied with cylinder 47 and is connected to the driver 48 that can activate in the mode of regulation, is preferably connected to stepping motor.Driver 43,45,48 is connected to the special controlling organization of work station 8 by control line 49 to 51 respectively, controlling organization 8 and then for example connect 13 by bus and be connected to the central control unit 10 of weaving loom of producing cross winding bobbin.
In addition as shown in Figure 1, in spinning apparatus 5, the supply fiber band 14 being stored in spinning can (not shown) is spun into yarn 16, and then yarn 16 is wound onto on coiler device 7 to form cross winding bobbin 18.The spinning apparatus 7 of such spinning position 4 has: for rotatably keeping the bobbin cradle 17 of cross winding bobbin 18; Have the yarn transversing mechanism 22 of traverse guide 19, this traverse guide 19 can be driven by single electric motor; And bobbin driving mechanism 23, the bobbin driven roller 32 of this bobbin driving mechanism 23 for example can be driven by motor driver 27.Each in the spinning position 4 of open-end spinning machine 1 is also equipped with multiple other different yarns to be handled or processing mechanism, and this yarn manipulation or processing mechanism are guaranteed the self-sufficient operation of spinning position 4 where necessary.Spinning position 4 all for example has: yarn pull-out mechanism 20, and this yarn pull-out mechanism 20 can be driven and be activated in the mode of regulation by single electric motor; Suction nozzle 21, this suction nozzle 21 can be driven by single electric motor; And joint member 52, this joint member 52 is arranged in the region of spinning apparatus 5 and itself is known, therefore describes no longer in more detail.For the driver 24 of yarn pull-out mechanism 20, for the driver 25 of suction nozzle 21, be also connected to the special controlling organization of work station 8 by one of control line 28 to 31 respectively for the driver 26 of traverse guide 19 and for the driver 27 of bobbin driven roller 32.The yarn 16 of producing in spinning apparatus 5 leads in the way of coiler device 7 and contacts directly or indirectly with other function element of spinning position 4 at it.In the region of the operating path of yarn, arrange for example lugs 33, pneumatic thread memory 34, mechanical yarn storage device 35 and waxing mechnism 36.
Fig. 2 illustrates controlling organization 10, is preferably the central control unit 10 of the open-end spinning machine with the mechanism 37,38,39 for inputting the parameter that characterizes joint.Controlling organization 10 is supplied with for example data about parameter " joint thickness-coarse adjustment " by mechanism 37, and mechanism 38 is used to input parameter " joint thickness-fine setting " simultaneously.Therefore data about parameter " joint length " are inputted by mechanism 39.
Parameter " joint thickness-coarse adjustment " in the input at 37 places of mechanism is processed in this case in controlling organization 10, goes out the fiber flight time t as shown in Reference numeral 40 according to this calculation of parameter
fiberflight.By being input to the parameter " joint thickness-fine setting " in mechanism 38, also pre-determine the size delta s of the additional fibre weight shown in Reference numeral 41, according to Δ s, consider that controlling organization 10 calculates height addn and the length S that fiber increases in the parameter " joint length " of mechanism's 39 places input
aDD.Calculated data is used for activating the driver 48 of fiber band supply cylinder 47 through bus connection 13.
Here in controlling organization 10, calculate according to following calculation specification (calculation specification) the length S that fiber increases,
aDD:
S
ADD=V
N×t
ADD+Δs
Wherein:
V
nthe speed that fiber band is supplied with cylinder in the time that the extraction of yarn starts,
T
aDDthe cycle that fiber increases, this T
aDDcalculation specification be known, and
Δ
sit is the size of the fibre weight of increase.
The data that are stored in the height (addn) of the fiber increase in controlling organization 10 with form are rule of thumb determined substantially, in this empirical data is determined, have considered calculation specification
1n(1+addn)/addn=1-Δs/S
ADD。
Fig. 3 illustrates according to jointing method of the present invention by means of curve map.
Abscissa illustrates the time course t of jointing method, in this case, can infer fiber band supply, the extraction of yarn and the relevant speed v that the end of a thread returns from ordinate simultaneously.
Curve 1 shows fiber band and supplies with, and curve 2 shows the extraction of yarn, and curve 3 shows the end of a thread and returns.As shown in the figure, in the embodiment shown, according to predetermined rotor speed, the returning first at moment t of ready the end of a thread
1start and at moment t
2finish.In other words, at moment t
2, treat that the end of a thread of the predetermined length of joint is arranged in the spinning rotor 44 that reaches its operating rate.Through after short time interval, at moment t
3, fiber band is supplied with and is started, and fiber band is supplied with cylinder 47 and is started with maximal rate immediately as shown in the figure, and then this maximal rate reduces and continuously at moment t
6reach its minimum of a value, thereby adapt to the running of spinning rotor 44, again reach at moment t
7the standard value reaching.
At moment t
4place, the extraction of yarn also starts and increases to the predetermined speed of rotating speed by spinning rotor 44, at moment t
5reach this speed.From moment t
5start, the increase of the draw speed of yarn is also carried out pro rata with the increase of the rotating speed of spinning rotor 44, and at moment t
7, reach predetermined its standard value of operating rate by spinning rotor.
Claims (5)
1. for a jointing method for open-end rotor spinning unit, this open-end rotor spinning unit has: spinning rotor, and this spinning rotor is to rotate in the rotor case loading in negative pressure at a high speed; There is the fiber band opening mechanism of opening roller; And fiber band is supplied with cylinder, this fiber band is supplied with cylinder and can be activated with prescribed manner, wherein, the ready veil electric drawing back from mound bobbins is fed in described spinning rotor, and the yarn of producing is extracted out from described open-end rotor spinning unit, described jointing method is characterised in that, before the first joint process starts, the parameter that characterizes this joint is located input by operator at the controlling organization (10) of open-end spinning machine, according to described parameter, described controlling organization (10) calculates the length (S that required fiber increases
aDD) and height (addn) and fiber flight time (t
fibreflight), according to calculated value, described fiber band is supplied with cylinder and is then activated and activated, make described fiber band supply with cylinder and start with the predetermined maximum feed speed of described height (addn) being increased by described fiber, described fiber band is supplied with the described feed speed of cylinder at the described length (S of described increase
aDD) be reduced to minimum of a value while finishing, and last, being adapted to the running of described spinning rotor, the described feed speed that described fiber band is supplied with cylinder rises to predetermined standard value again.
2. method according to claim 1, is characterized in that, " joint thickness-coarse adjustment ", " joint thickness-fine setting " and " joint length " are inputted by operator as the parameter that characterizes described joint.
3. method according to claim 2, is characterized in that, in described controlling organization, calculates described fiber flight time (t according to the input of described parameter " joint thickness-coarse adjustment "
fibreflight).
4. method according to claim 2, it is characterized in that, pre-determine the fibre weight of increase (Δ s) by inputting described parameter " joint thickness-fine setting ", described controlling organization is the input together with described parameter " joint length " according to the fibre weight of this increase, calculates the described length (S that described fiber increases
aDD) and described height (addn).
5. according to the method described in claim 1 or 3, it is characterized in that, according to described fiber flight time (t
fibreflight) determine that described fiber band supplies with the time interval that cylinder started before described yarn pull-out starts.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE200910050582 DE102009050582A1 (en) | 2009-10-24 | 2009-10-24 | Method for starting open-end rotor spin machine to spin threads, involves reducing feed speed of fiber band-feed cylinder to minimum value upto end of length of adder, adapting speed to run-up of rotor and again raising speed to value |
| DE102009050582.2 | 2009-10-24 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102041589A CN102041589A (en) | 2011-05-04 |
| CN102041589B true CN102041589B (en) | 2014-07-30 |
Family
ID=42105409
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201010516056.4A Expired - Fee Related CN102041589B (en) | 2009-10-24 | 2010-10-18 | Piecing method for open-end rotor spin machine |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN102041589B (en) |
| DE (1) | DE102009050582A1 (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102012008691A1 (en) * | 2012-04-28 | 2013-10-31 | Oerlikon Textile Gmbh & Co. Kg | Method and device for operating jobs of an open-end rotor spinning machine |
| DE102012011122A1 (en) | 2012-06-05 | 2013-12-05 | Saurer Germany Gmbh & Co. Kg | Printed circuit board for textile machine used for processing or handling of fiber material, has spiral-shaped conductors that are connected with upstream diode arrangement for dissipation of electrostatic discharge |
| DE102012011120A1 (en) | 2012-06-05 | 2013-12-05 | Saurer Germany Gmbh & Co. Kg | Circuit board for controlling biphase bipolar stepping motor for rotor spinning machine, has converter circuits transmitting signals inverted relative to two respective inputs of board to respective inputs of motor drive |
| JP7384840B2 (en) * | 2018-06-13 | 2023-11-21 | エーリコン テクスティル ゲゼルシャフト ミット ベシュレンクテル ハフツング ウント コンパニー コマンディートゲゼルシャフト | Method and device for setting yarn groups |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6339921B1 (en) * | 1999-11-19 | 2002-01-22 | W. Schlafhorst Ag & Co. | Textile yarn piecing device with an evaluation arrangement for determining parameters of an automatic yarn piecing process |
| CN1405374A (en) * | 2001-08-09 | 2003-03-26 | W.施拉夫霍斯特公司 | Free-end air-flow spinner |
| CN101275319A (en) * | 2007-03-31 | 2008-10-01 | 欧瑞康纺织有限及两合公司 | Method for operating a textile machine producing cross-wound bobbins |
| CN101321901A (en) * | 2005-12-10 | 2008-12-10 | 欧瑞康纺织有限及两合公司 | Method for starting to spin a thread, and rotor-spinning machine for carrying out the method |
| EP2078770A2 (en) * | 2008-01-09 | 2009-07-15 | Oerlikon Textile GmbH & Co. KG | Method of operating a spinning station of a semiautomatic open end spinning frame and spinning station to implement the method |
| CN101522550A (en) * | 2006-10-06 | 2009-09-02 | 欧瑞康纺织有限及两合公司 | Workstation of a textile machine |
| EP2105401A2 (en) * | 2008-03-28 | 2009-09-30 | Murata Machinery, Ltd. | Yarn end retrieving apparatus |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3903782C2 (en) | 1989-02-09 | 1994-02-24 | Rieter Ingolstadt Spinnerei | Method for piecing an open-end spinning device and open-end spinning machine with a device for piecing individual or several spinning devices |
| DE4030100C2 (en) | 1990-09-22 | 2000-03-23 | Schlafhorst & Co W | Method and device for determining the changes in criteria of an automatic piecing process |
-
2009
- 2009-10-24 DE DE200910050582 patent/DE102009050582A1/en not_active Withdrawn
-
2010
- 2010-10-18 CN CN201010516056.4A patent/CN102041589B/en not_active Expired - Fee Related
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6339921B1 (en) * | 1999-11-19 | 2002-01-22 | W. Schlafhorst Ag & Co. | Textile yarn piecing device with an evaluation arrangement for determining parameters of an automatic yarn piecing process |
| CN1405374A (en) * | 2001-08-09 | 2003-03-26 | W.施拉夫霍斯特公司 | Free-end air-flow spinner |
| CN101321901A (en) * | 2005-12-10 | 2008-12-10 | 欧瑞康纺织有限及两合公司 | Method for starting to spin a thread, and rotor-spinning machine for carrying out the method |
| CN101522550A (en) * | 2006-10-06 | 2009-09-02 | 欧瑞康纺织有限及两合公司 | Workstation of a textile machine |
| CN101275319A (en) * | 2007-03-31 | 2008-10-01 | 欧瑞康纺织有限及两合公司 | Method for operating a textile machine producing cross-wound bobbins |
| EP2078770A2 (en) * | 2008-01-09 | 2009-07-15 | Oerlikon Textile GmbH & Co. KG | Method of operating a spinning station of a semiautomatic open end spinning frame and spinning station to implement the method |
| EP2105401A2 (en) * | 2008-03-28 | 2009-09-30 | Murata Machinery, Ltd. | Yarn end retrieving apparatus |
Also Published As
| Publication number | Publication date |
|---|---|
| DE102009050582A1 (en) | 2010-05-20 |
| CN102041589A (en) | 2011-05-04 |
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