CN1424447A - Spinning machines - Google Patents
Spinning machines Download PDFInfo
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- CN1424447A CN1424447A CN 02156175 CN02156175A CN1424447A CN 1424447 A CN1424447 A CN 1424447A CN 02156175 CN02156175 CN 02156175 CN 02156175 A CN02156175 A CN 02156175A CN 1424447 A CN1424447 A CN 1424447A
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- Prior art keywords
- drafting unit
- unit
- roller
- fine spining
- driver
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- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01H—SPINNING OR TWISTING
- D01H1/00—Spinning or twisting machines in which the product is wound-up continuously
- D01H1/14—Details
- D01H1/20—Driving or stopping arrangements
- D01H1/22—Driving or stopping arrangements for rollers of drafting machines; Roller speed control
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- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01H—SPINNING OR TWISTING
- D01H13/00—Other common constructional features, details or accessories
- D01H13/26—Arrangements facilitating the inspection or testing of yarns or the like in connection with spinning or twisting
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- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01H—SPINNING OR TWISTING
- D01H5/00—Drafting machines or arrangements ; Threading of roving into drafting machine
- D01H5/18—Drafting machines or arrangements without fallers or like pinned bars
- D01H5/32—Regulating or varying draft
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Textile Engineering (AREA)
- Spinning Or Twisting Of Yarns (AREA)
Abstract
A spinning machine, and especially a ring spinner, has at least having at least one driving device for controlling by frequency modulator or frequency transformer, and a central control unit for controlling frequency modulator. The central control unit is also provided with a starting unit, through which the predraft mount of the drafting unit can be changed. The said drafting unit comprises rolla pairs, each pairs of rolla including press rolla pressed on the lower drum for driving the lower drum, mounted on each filature together. Each rolla mounted under continuous rolla pairs (w, w1 and w2) is as the lower drum (w, w1 and w2), fibre materials (110) can be predrafted between rolla pairs (w) and rolla pairs (w1). Lower rolla (w1) in the middle can be drived faster or slower, while the circumferential speed of the rest rolla or rolla pairs (w qnd w2) can be invariable, in order to chang the predraft mount of the drafting unit. The circumferential speed of Rolla (w1) can be changed in order to improve the performance of the drafting unit between rolla pairs (w and w1)to the most, the drafting force of the predraft area which is between rolla pairs (w and w1) in the chang area is relatively most to obtain even main drafting between rolla pairs (w1 and w2).
Description
Invention field
The present invention relates to a kind of fine spining machine, especially a kind of ring throstle, its drafting unit has at least one driver that is used for the drafting unit cylinder, described driver is by speed regulator, especially frequency modulator or frequency converter are controlled, and monitor described speed regulator or frequency modulator by the centralized control unit of machine.Also relate to driver, relate to the driver of any fine spining machine in principle.
Background technology
Occasionally quality problems can take place during the processing fiber material under given conditions.
Summary of the invention
Thus, the objective of the invention is to propose the fine spining machine of a kind of front stated type, especially a kind of ring throstle, its drafting unit has at least one driver that is used for the drafting unit cylinder, described driver is by speed regulator, especially frequency modulator or frequency converter are controlled, and monitor described speed regulator or frequency modulator by the centralized control unit of machine.Can guarantee favourable condition of work in simple, yet reliable mode.
This purpose is to realize by the fine spining machine with described each feature of claim.
Description of drawings
Below with reference to accompanying drawings and by the mode of exemplary embodiment the present invention is done more detailed introduction.Wherein:
Fig. 1 is the partial view of schematically simplifying, and shows a preferred embodiment of ring throstle, the power distribution of machine as we can see from the figure;
Fig. 2 is that the ring throstle of Fig. 1 is schematically simplified partial view, is arranged on centralized control unit, the frequency modulator of machine as we can see from the figure and is used to change signal line between the relay of direction of rotation;
The schematic diagram of Fig. 2 a drafting unit controlling organization;
The enlarged diagram of Fig. 3 relay, relay are arranged between the centralized control unit and corresponding frequency modulator of ring throstle, and described relay is used to change direction of rotation; With
The change procedure of Fig. 4 drafting unit cylinder moment of torsion under different condition;
Fig. 5 has shown the current strength of the drafting unit driver that changes with draw ratio and cylinder moment of torsion change procedure qualitatively.List of reference numerals
10 ring throstles, 11 numerical controls outlet
12 spinning stations or spindle driver 13 conversion contactors
14 drafting unit electric drive 14a determination units
14b determination unit 15 start-up circuits
16 drafting unit electric drive 16a drafting unit cylinders
18 ring rail electric drive 20 frequency modulators or frequency converters
22 frequency modulators or frequency converter 24 frequency modulators or frequency converter
26 frequency modulators or frequency converter 28 centralized control units
28a start unit 29 control inlets
30 control inlets, 31 relays
32 coils, 33 recovery diodes
34 intermediate circuit 36DC/DC converters
38 acceptance filters, 40 transformers, pressure reducer
42 service modules, 44 data links
46 set point adjustment devices, 48 data links
50 data links, 60 measuring units
60a current measuring unit 60b, the c initiator
62 memory cell, 64 data processors
66 setpoint cell, 115 speed changers
The change-speed gearing of 115a tape controller
The specific embodiment
With reference to figure 2a, fibre bundle 110 passes a pair of roller w, by the preliminary draft district, arrives first couple of roller w1, further enters down a pair of roller w2, and this fibre bundle 110 is sent to twist yarn and yarn winding device then.W1 and roller are provided with guide bridge 118 between to w2 and towards the dust cage 116 of guide bridge at roller, dust cage 116 ends of w2 are stretched into guide bridge 118 and roller to the space between the w2 towards roller.Each roller of first couple of roller w1 is surrounded by tail band 114 and/or heading tape 112, and this two band is also crossed (only local display) guide bridge 118 and/or dust cage 116.This two strap is an endless, by roller w1 is driven, and can be sent to roller to fibre bundle 110 to w2 from roller to w1 like this.For the sake of clarity, guide bridge 118 is adhered to the tail band 114 of guide bridge, and dust cage 116 and heading tape 112, also have roller to w1 and w2 the display mode on figure be make be with 114,112 and fibre bundle 110 and/or roller the roller of w1 and w2 is all left enough distances each other.And in the fine spining machine drafting unit of reality, the distance between roller w1, w2 and the belt 114,112 should make fibre bundle 110 clamp, fiber that thus can drawing of fiber bundle 110.
Shown in the schematic partial view of the ring throstle 10 of Fig. 1 and Fig. 2, ring throstle comprises the electric drive of a spinning station or spindle 12 at least, the electric drive 14,16 of drafting unit, and at least one annular electro bogie promptly encircles rail electric drive 18, and these devices are that frequency converter 20-26 controls by frequency modulator.Different frequency modulator 20-26 can control by the centralized control unit 28 of ring throstle 10.
Frequency modulator 20 is to be used for controlling spindle driver 12 to carry out the rotation of direction, and to twisting, and control spindle driver 12 carries out opposite spin corresponding to the Z of yarn, corresponding to the S of yarn to twisting.For this reason, frequency modulator 20 has two independent controls inlets 29,30, and by relay 31 control (specifically referring to Fig. 2 and Fig. 3) that hockets, described control module is corresponding with two opposite direction of rotation.
A recovery diode 33 is parallel to the coil 32 of relay 31.
Relay 31 is controlled by the numerical control outlet 11 of machine center control module 28.
In this exemplary embodiment, relay 31 comprises a conversion contactor 13, and two control inlet 29,30 cooperatings with frequency modulator 20 preferably are arranged on it start-up circuit 15 that is used for frequency modulator 20.
Each direction of rotation can with service module 42 that machine center control module 28 is connected on pre-determine (see figure 2).The preset value of corresponding direction of rotation can be set by relevant parametersization.
For the direction of rotation reversing of spindle driver 12, the centralized control unit 28 of machine preferably is arranged to carry out of short duration stopping.
Can be equipped with signal or indication that the proper device (not shown) sends the direction of rotation reversing.Signal or indicating device can by, for example, the centralized control unit 28 of machine triggers.
As can be seen from Figure 1, the frequency modulator 22-26 that is used for drafting unit driver 14,16 and ring rail electric drive 18 is by shared intermediate circuit 34 feeds, and this circuit can apply DC voltage by at least one frequency modulator 20 that is used at least one or more spindle drivers 12.Centralized control unit 28 is intermediate circuit 32 feeds thus also, and described central control unit is connected to intermediate circuit 34 by DC to DC converter 36.By this converter 36, the High Level DC Voltage of the intermediate circuit 34 of feeding is reduced to than low value, for example 24 volts.
Acceptance filter 38 and transformer or the pressure reducer 40 of the frequency modulator 20 that is used for spindle driver 12 by supply voltage adjustment usefulness is connected to 3 circuitry phases.
The service module of having mentioned above Fig. 2 demonstrates 42 is connected with the centralized control unit 28 of machine.
Between the centralized control unit 28 of machine and frequency modulator 20,26, a data link 44 is arranged, and a desired value adjuster 46 (carefully referring to Fig. 2), in this exemplary embodiment, frequency modulator 26 is given in configuration.In addition, also have one to carry out the FU internal data transfer device 50 (FU is the frequency converter assembly that comprises frequency modulator) that FU internal data transfer device 48 that drawing-off uses and use for drafting unit synchronous operation for drafting unit.
In addition, in this exemplary embodiment, also dispose electronics drafting unit speed changer.For this reason, two drafting unit frequency modulators (drafting unit converter), 22,24 correspondingly co-ordinations.Especially can realize appropriate control by desired value adjuster control panel.Just might preset to desired value adjuster 46 and/or desired value adjuster control panel implementation data value thus from the centralized control unit 28 of machine.For example, just can realize parametrization by service module 42.
Thus, the additional S that establishes for reverse rotation (REV) just can be achieved by the additional control inlet 30 of frequency modulator 20 to the twisting function.The reverse rotation of this motor (REV) makes the electric drive 12 of spindle controllably carry out counter-rotation by frequency modulator 20.
By the relay 31 conversion contactors 13 that insert frequency modulator 20 start-up circuits 15, the direction of rotation of frequency modulator switches to control inlet 30 (REV) from control inlet 29 (FOR).Like this, relay 31 plays the effect of change-over switch.The centralized control unit 28 of machine exports 11 trigger relays 31 by the numeral of regulation.
In frequency modulator 20, direction of rotation is to show forward (FOR) or reversing (REV) with relevant parameters.All each operation phase at machine all guarantee correct direction of rotation.
Frequency modulator not only is used for this fine spining machine driver 12 in principle, and can be used for any other fine spining machine driver, described frequency modulator is configured to both can control the driving of a direction, can control the driving of another direction again, and has a control corresponding inlet at least.In addition, in this class frequency modulator, two independent control inlets can be set also,, for example, can replace control by relay corresponding to two opposite direction of rotation.Be not subjected to the restriction of embodiment correlation form, for example, direction of rotation can also change by at least one parameter that changes relevant frequency modulator.
The driver 14,16 of drafting unit also can be controlled by the frequency modulator of corresponding layout in principle, that is to say, adopts the relevant method of above that introduce and spindle driver 12.
The centralized control unit 28 of machine can comprise a counter-rotating controlling organization, can control the frequency modulator and/or the relay that are used for the drafting unit driver, in this way, after fine spining machine stopped, relevant drafting unit driver was with the driving side one end reversing ormal weight of drafting unit cylinder.
This will cause the drafting unit cylinder to rotate and/or lax less angle at free end at parking period, and this angle may be than littler under the situation of not taking above-mentioned measure.According to Fig. 4, at normal operation period, the moment of torsion that the cylinder 16a of drafting unit is stood rises to maximum V1 value at free axle head, if two ends drive, then rises to maximum at the center of machine.After cylinder was lax, if the driving side of drafting system cylinder (left side) end is fixed, then the moment of torsion angle was returned to the V2 value.Promptly lax by the reversing of on the driving side of drafting unit cylinder, taking control, the relative moment of torsion dv ' that described cylinder stood also is exactly that active on the left end is lax, after drafting unit partly unloads, also be exactly the passive lax dv on the opposite end ", these two values poor less than absolute value V1-V2 thus.Because reduced the rate of travel of drafting unit cylinder between the relaxation period after the parking, the stretching error also just is restricted, and that is to say, remains on acceptable number.
In order to understand better, the qualitative change procedure and/or the numerical value of Fig. 4 drafting unit cylinder moment of torsion are listed as follows:
V is through the moment of torsion (moment of torsion angle) of the drafting unit cylinder of length L
Moment of torsion during the V1 steady-state operation
Moment of torsion after the V2 parking period is lax
Moment of torsion under the effect of V3 relaxation device
Relaxing of dv ' configuration relaxation device situation bottom roll left end (driving side)
Dv " right free-ended lax and lax in machine center when adopting two ends to drive of cylinder
Relaxing at right-hand member when V1-V2 does not have relaxation device
According to the present invention, in order to regulate, especially for the optimization yarn qualities, the control module 28 of fine spining machine will be set up start unit 28a, and the preliminary draft amount by the start unit drafting unit can change.The preliminary draft of fibrous material 110 roller to 2 and roller carry out between to w1.Roller is to forming by driving bottom roll and superjacent pressure roller often, so each spinning station all has been equipped with a pair of roller.In following introduction, roller all is called bottom roll w, w1 and w2 to every roller that is arranged on the below among w, w1 and the w2.In order to change the preliminary draft amount of drafting unit, preferably middle bottom roll w1 is driven slowly a bit or hurry up.Roller and/or roller remain unchanged to the peripheral speed of w and w2.In order to change the preliminary draft amount, can also change the peripheral speed of the first bottom roll w, still, thus, have in the peripheral speed of identical ratio change bottom roll w2, this is that this is the basic demand of producing a certain model yarn for whole drawing-off amounts in the drafting unit scope remain unchanged.In addition, spindle driver 12 and roller also are necessary to the constant velocity-ratio of w2.
It is for two rollers are brought up at utmost the performance of the drafting unit between w and the w1 that the peripheral speed of roller w1 is changed.The present invention is based on and found, when the roller just in preliminary draft district is maximum to the drafting force between w and the w1, dominant draft especially uniformly takes place between roller is to w1 and w2.Fine spining machine according to the present invention's design has a control module, and it can adjust the optimum state of preliminary draft automatically, thereby also adjusts the optimum state of whole drawing-offs automatically.All thus drawing-offs remain unchanged, and still according to the requirement of textile technology, preliminary draft rate and dominant draft rate will change.
According to Fig. 2, between roller is to w and w1, can measure with various method apart from the maximum drafting power in the preliminary draft district of S.A kind of possibility is wherein arranged, and that is exactly when changing the rotating speed of drafting unit driver 14 and/or 14b, measures the driver 14 of bottom roll w1 and/or the amperage I among the 14b, wherein the bottom roll w1 drafting unit cylinder 16a in Fig. 2 just.The rotation speed change of drafting unit cylinder 16a preferably adopts the method that is equipped with independent electric drive 14b to realize, thus in fine spining machine, particularly in ring throstle, be provided with the drafting unit cylinder 16a that several be arranged in parallel, as shown in Fig. 1 and Fig. 2, be provided with a drafting unit electric drive 14 and/or 14b for each drafting unit cylinder.The roller that other drafting unit electric drives 16 of respective numbers are provided for respective numbers to the roller of the drive unit of w2 and/or respective numbers to w2.And roller is provided with electric drive 14a to w itself.The driver of drafting unit might only be equipped with a power supply 14 supplies two counter extensioin unit cylinder w and w1.In this case, just need set up speed changer 115, be arranged between drafting unit electric drive 14 and the gear chain, gear chain extends to bottom roll w and/or w1 from speed changer 115.When transmission device 115 extends to the speed of gear chain of drafting unit cylinder 16a and/or driveability and need change, be provided with the change-speed gearing that has control driver 115a at speed changer 115, and the control driver 115a of change-speed gearing is coupled with the start unit 28a of controlled manner and control module 28 and/or control module 28.The device that is used to adjust drum rotation speed can also be called speed regulator usually.
But, be equipped with independent drafting unit electric drive 14b for drafting unit cylinder 16b in the preferred embodiment, for this reason, according to Fig. 1,2 and 2a, frequency modulator or frequency converter 22 are connected with drafting unit electric drive 14.
Correspondingly, the frequency modulator that other are set is adorned the driver 14a and 16 that is used for other.
For optimization preliminary draft amount, need Spinning Machine Control unit 28 is regulated substantially, the scope of described basic adjusting is limited to the every numerical value to service module 42 inputs.Basic regulated value can comprise some following parameters, generally can not generate at the centralized control unit 28 of data processor 64 or machine:
The rotating speed of the spindle of N in the spinning station has disposed spindle driver 12 for this reason
N, n1 and n2 roller be to w, the rotating speed of w1 and w2
N (t) in time and/or the variation change in rotational speed process of cop stroke etc.
After the operating parameter input, the startup stage that fine spining machine promptly being in, this moment, start unit 28a was in higher level, made its performance rise to high level as far as possible in order to control drafting unit driver 14b, for this reason, changing is that amperage with drafting unit electric drive 14b is increased to maximum.To in driver 14b or frequency modulator 22, measure amperage I and it is recorded in the determination unit 60.In addition, according to Fig. 4, the moment of torsion of drafting unit cylinder 16a can also be by its device 60b that begins, and 60c notes.Each value by measuring unit and/or determination unit 60 assessments is sent to memory 62, simultaneously, in the data processor 64 that is connected with memory in time and the corner α value of amperage I value that records continuously and/or drafting unit cylinder 16a compare mutually.For the toggle speed of drafting unit driver 14b, select a speed of only a little higher than drafting unit driver 14a rotating speed and suppose that the diameter of roller is identical, like this, roller has minimum preliminary draft influence to 110 of the fibrous materials between w and the w1.
If the amperage I (N) by the N time measurement is higher than amperage I (N-1), improve so the performance of drafting unit driver 14b improves rpm-dependent, and the preset value of rotating speed (n1) can increase a difference n '.The new desired value of drafting unit driver 14b rotating speed sends setpoint cell 66 to again and then send to the centralized control unit 28 of machine from data processor 64, or directly sends to set-value adjuster 46.The result is that the power frequency in the frequency modulator 22 has increased desired value, and drafting unit driver 14b causes the further raising of preliminary draft ratio thus with higher speed operation.
The rotating speed of drafting unit electric drive 14b can divide several steps to improve, and amperage I feeds back to measuring unit 60 in each step, and described amperage will be measured and be compared with the amperage that had before recorded by current measuring unit 60a.As mentioned above, the value I that newly records also will send into memory 62 again and be handled by data processor 64, produces the poor of I (N+1)-I (N) once more.If it is positive that difference remains, produce newly-increased desired value (n1) by the setpoint cell that is connected 66, and the centralized control unit 28 by machine will increase desired value (n1) newly and send frequency modulator 22 to.Drafting unit electric drive 14b measures amperage I abreast or alternately, and as previously mentioned, the corner of drafting unit cylinder 16a can also be measured.For this reason, for example record mark on the drafting unit cylinder 16a, so at time point t1, a measuring-signal is transmitted into measuring unit 60 at initiator 60b.When the load of drafting unit cylinder 16a has caused the cylinder moment of torsion, in the same way attached to the mark on the drafting unit cylinder 16a, be recorded in initiator 60c at time t2 subsequently, time difference t2-t1 sends to data processor 64 via memory 62, data processor 64 is handled by the transient speed n1 of counter extensioin cylinder 16a, just can determine the moment of torsion α between initiator 60b and the 60c easily, because this corner is directly proportional with the product of transient speed and time difference t2-t1.In order in fact to make the preliminary draft optimization, need not measure amperage I, also can in drafting unit driver 14b, measure the corner α of a drafting unit cylinder 16a part, this is in order to find out the relative performance level of drafting unit cylinder 16a.During the optimization procedures of drafting unit cylinder 16a preliminary draft amount v, can simultaneously or determine the amperage I of drafting unit driver 14b and the moment of torsion of drafting unit cylinder 16a abreast, because this can obtain the limit value of drafting unit cylinder 16a maximum permissible torque α.
Increase gradually and therefrom during the increasing gradually of drafting unit cylinder 16a rotating speed, the corner α=α n1 (t2-t1)/30 that increases gradually in data processor 64 also can determine and compare with maximum permissible value at the rotating speed of driver 14b.If rotation speed n 1 increases continuously, when reaching the limit value of drafting unit cylinder maximum permissible torque, optimization procedures just can stop, and before reaching the maximum current I consumption of drafting unit electric drive 14b, the optimization of preliminary draft ratio stops.When the moment of torsion of having ignored drafting unit cylinder 16a and increase continuously the preliminary draft ratio when exceeding optimum value, the amperage of drafting unit driver 14b and/or power input will descend once more, thus, if the difference between two amperage I (the N+x)-I (N+x1) of (N+x) suboptimization step becomes zero maybe will become negative the time, best preliminary draft amount v also can determine in data processor 64.
When the rotating speed of the best (n1+xn ') reaches, described rotating speed is by a succession of value that records is carried out relatively determining accordingly in data processor 64, the clear and definite desired value that fine spining machine input and/or that select was regulated before this rotating speed of target of determining (n1+xn ') was used as, wherein said adjusting is finished by the service module 42 in the setpoint cell 66, and is used for spinning process from now on.Optimized rotating speed behind x iterative step (n1+xn ') also end to this, can on service module 42, be indicated as being empirical value, the yarn that can be used for is from now on produced in batches, and can be preserved by means of data processor.
Optimized preliminary draft value can be defined as the new rotating speed of roller w1 and the ratio of the new rotating speed of roller w.If, the record of optimization procedures is announced out for example, by demonstrating, this is helpful to operational administrative on service module 42 by data processor 64.
Be the necessary construction package of optimization preliminary draft amount, as measuring unit 60, memory 62, data processor 64, setpoint cell 66 etc., the material member that can be used as start unit 28a assembles up, perhaps, start unit 28a and/or centralized control unit 28 that the assembly of being mentioned is stored in machine as the routine or element to the small part of electronic data processing (EDP) program, thus can with machine center control module 28 in the central electronic data handle the optimization procedures that (EDP) control program carries out jointly during, handle as routine.
Relate to the optimization of preliminary draft amount, the selection apart from S between the first couple of roller w and the second couple of roller w1 is also most important.Described apart from S optimization and simultaneously during the optimization of preliminary draft speed v, reduce that to cross over apart from the fibrous material tension force in the preliminary draft district of the whole length of S be possible, and can not have a negative impact yarn qualities.Can determine distance S in 50 millimeters to 90 millimeters scope that only size is 75 millimeters.
In addition, under certain conditions, it is favourable keeping being lower than slightly the optimum value that above-mentioned preliminary draft obtains than optimization, in other words, remain under the drafting force of maximum possible, because it is littler than surpassing described value to the adverse effect that yarn qualities produces to be brought down below best draw ratio.What have practical significance thus is, the preliminary draft value is chosen in the scope of 70-90% of best preliminary draft value, has so best preliminary draft value, and the power input of the electric drive 14b of drafting unit cylinder 16a becomes and is peak.
The content of introducing above can the same manner be applied to be arranged on any driver of drafting unit cylinder.
If continuous long drafting unit cylinder is to drive at its two ends, so-called thus " free end " is to be about on the machine center at half place at drum length." free end " is generally understood as a privileged site of cylinder, do not have moment of torsion on this position, or has only inappreciable moment of torsion to be transmitted.
Fig. 5 shows that preliminary draft value v gradually changes, and to the amperage I of driver with to the influence of corner α.
Beginning on drawing-off value v ≈ 1.05, amperage I and moment of torsion α progressively raise.
Can be amperage 1 and the limit value of stipulating No overtaking for corner α.To α, and curve map v=f (1, represent with horizontal line in A).Reached drawing-off value v ≈ 1.085 herein.But maximum effective power input does not also reach.May reach maximum amperage at v ≈ 1.11.
Claims (25)
1. a fine spining machine (10), especially a kind of ring throstle, its drafting unit has at least one driver (14 that is used for drafting unit cylinder (16a), 14b), described driver is by speed regulator, especially frequency modulator or frequency converter (22) are controlled, and centralized control unit (28) described speed regulator of monitoring or frequency modulator (22) by machine, it is characterized in that: in order to regulate, especially for the optimization yarn qualities, the control module of described fine spining machine (28) has been set up start unit (28a), and by described start unit, the preliminary draft amount of described drafting unit can change.
2. fine spining machine according to claim 1, it is characterized in that, each roller is to all forming by driving bottom roll and superjacent pressure roller, corresponding roller is to being arranged on each spinning station, with these rollers that are provided with continuously to (w, w1 and w2) the bottom roller all be called bottom roll (w, w1 and w2), the preliminary draft of fibrous material (110) carries out between to (w1) (w) and described roller at described roller.
3. according to each described fine spining machine in the claim of front, it is characterized in that: in order to change the preliminary draft amount of described drafting unit, middle bottom roll (w1) can drive slowly a bit or hurry up, and described roller and/or roller are to the peripheral speed of (w and w2) thereby do not change.
4. according to each described fine spining machine in the claim of front, it is characterized in that: in order to change the preliminary draft amount, the peripheral speed of first bottom roll (w) is variable, and the peripheral speed of described bottom roll (w2) is also with same rate of change, the whole drawing-off amount of described drafting unit is remained unchanged, and the speed constant proportion can be regulated spindle driver (12) and described roller to (w2).
5. according to the method for operating of each described fine spining machine in the claim of front, it is characterized in that: changing described roller (w1) peripheral speed is for described roller is brought up at utmost the output of the drafting unit between (w and w1), can between described roller is to (w1 and w2), obtain dominant draft very uniformly, drafting force in the preliminary draft district is the highest relatively thus, that is, described roller is relative the highest to the drafting force between (w and w1) in variation zone.
6. according to each described fine spining machine in the machine dependent claim in front, it is characterized in that: the fine spining machine of design has control module according to the present invention, and it has been equipped with controlling organization (60,62,64,66,60a, b, c), in order to adjust to preliminary draft amount (optimum value v), thereby automatically adjust to the optimum value of whole drawing-off amounts, whole thus drawing-off amounts become invariable, still, according to the needs of textile technology, preliminary draft amount and dominant draft rate will change.
7. according to the method for operating of each described fine spining machine in the claim of front, it is characterized in that: determine to cross over described roller to can be by such mode between (w and w1) apart from maximum drafting power in the preliminary draft district of S, when the rapid change of described drafting unit driver (14 and/or 14b), measure described bottom roll (w1), be drafting unit cylinder 16a, the amperage I of driver (14 and/or 14b).
8. according to each described fine spining machine in the machine dependent claim in front, it is characterized in that: the variation of described drafting unit cylinder (16a) speed can realize by such mode, be that described drafting unit cylinder adopts independent driver (14b), thus in described fine spining machine, particularly in ring throstle, be provided with several parallel drafting unit cylinders (16a), each described drafting unit cylinder is provided with a drafting unit electric drive (14 and/or 14b), thus, be provided with the drafting unit electric drive (16) of respective numbers, be used to drive described roller to the described roller of (w1) and/or respective numbers to (w2), and described roller self has been equipped with electric drive (14a) to (w).
9. according to each described fine spining machine in the machine dependent claim in front, it is characterized in that: in the described drafting unit driver, only be equipped with the described two counter extensioin unit cylinders (w and w1) of a power supply (14) supply, and between described drafting unit electric drive (14) and gear chain, be provided with speed changer (115), described gear chain extends to described bottom roll (w and/or w1) from described speed changer (115), thus, in order to change rotating speed and/or the driveability that extends to the described gear chain of described drafting unit cylinder (16a) from described speed changer (115), be provided with the change-speed gearing that has control driver (115a) on described speed changer (115), the control driver of described thus change-speed gearing (115a) is coupled with controlled manner and described control module (28) and/or with the described start unit (28a) of described control module (28).
10. according to each described fine spining machine in the machine dependent claim in front, it is characterized in that: be equipped with independent drafting unit electric drive (14b) for described drafting unit cylinder (16a) in a preferred embodiment, need adopt frequency modulator or frequency converter (22) thus, described frequency modulator or frequency converter are connected with described drafting unit electric drive (14b), correspondingly, be provided with other frequency modulator and be used for other driver (14a and 16).
11. according to each described fine spining machine in the machine dependent claim in front, it is characterized in that: for optimization preliminary draft amount (v), should carry out the basic adjusting of described Spinning Machine Control unit (28), the scope of described basic adjusting is to be determined by the input value of service module (42), described basic regulated value comprises several parameters, these values can not generate in data processor (64) or in the centralized control unit (28) of machine, Ns is as spinning station spindle rotating speed, and described spinning station is equipped with spindle driver (12); In addition, n, n1 and n2 are as the rotating speed of roller to (w, w1 and w2); Ns (t) as spindle in time and/or the revolution change procedure that changes such as cop stroke.
12. method of operating according to each described fine spining machine in the previous methods claim, it is characterized in that: after the input operation parameter, the startup stage that described fine spining machine being in, in this stage, described start unit (28a) is in higher level, make its performance bring up to high as far as possible level in order to control described drafting unit driver (14b), change with regard to being the amperage of described drafting unit electric drive (14b) is brought up to maximum.
13. method of operating according to each described fine spining machine in the previous methods claim, it is characterized in that: the amperage I in described driver (14b) or the frequency modulator (22), and/or the torque of described drafting unit cylinder (16a), (60b 60c) measures and is recorded in the determination unit (60) by initiator.
14. method of operating according to each described fine spining machine in the previous methods claim, it is characterized in that: the value of being measured by measuring unit and/or determination unit (60) can be sent to memory (62), by the data processor (64) that is connected with described memory, the amperage I of timely continuous measurement and/or the corner α value of described drafting unit cylinder (16a) can be compared mutually, startup rotating speed for described drafting unit driver (14b), can select the speed of an only a little higher than drafting unit driver (14a) rotating speed and suppose that roller diameter is identical, be in described roller like this fibrous material between (w and w1) is had only very little preliminary draft.
15. method of operating according to each described fine spining machine in the previous methods claim, it is characterized in that: if in the N time is measured, amperage I (N) is greater than amperage I (N-1), the performance of so described drafting unit driver (14b) improves to be expected to improve by rotating speed and realizes, and the preset value of rotating speed (n1) can increase difference (n '), so the new speed desired value of described drafting unit driver (14b) sends to setpoint cell (66) from described data processor (64), then be sent to the centralized control unit (28) of described machine again or directly be sent to set point adjustment device (46), the result is, power frequency in the described frequency modulator (22) has increased desired value, described drafting unit driver (14b) causes the further raising of preliminary draft ratio thus with the high rotational speed operation.
16. method of operating according to each described fine spining machine in the previous methods claim, it is characterized in that: the amperage I that is measured by current measuring unit (60a) feeds back to measuring unit (60), compare with the amperage that had before recorded, new then measured value I sends memory (62) to and is handled by described data processor (64), because the result of difference I (N+1)-I (N) remain on the occasion of, so further increase desired value (n1) and the centralized control unit (28) by described machine sends new desired value to described frequency modulator (22) by the setpoint cell (66) that is connected.
17. method of operating according to each described fine spining machine in the previous methods claim, it is characterized in that: the rotating speed of described drafting unit electric drive (14b) divides some ranks to increase, all will be abreast or alternately measure the amperage I of described drafting unit electric drive (14b) and the corner α of described drafting unit cylinder (16a) in each rank.
18. method of operating according to each described fine spining machine in the previous methods claim, it is characterized in that: described initiator (60b) is sensed the mark on the described drafting unit cylinder (16a), at time point (t1) measuring-signal is sent to described measuring unit (60), because the load of described drafting unit cylinder (16a) has caused moment of torsion, then be recorded in initiator (60c) on the time (t2) after a while attached to being marked on the described drafting unit cylinder (16a) with the same manner, time difference (t2-t1) sends described data processor (64) to via described memory (62), handle by transient speed (n1) described drawing-off cylinder (16a), determined the moment of torsion between two initiators (60b and 60c), thus, corner is proportional to the product of transient speed and time difference (t2-t1).
19. method of operating according to each described fine spining machine in the previous methods claim, it is characterized in that: for the optimization preliminary draft, do not measure the amperage I of described drafting unit driver (14b), but measure a part of corner (α) of described drafting unit cylinder (16a), so that provide the indication of the level relatively of described drafting unit cylinder (16a) performance, perhaps, in the preliminary draft amount of described drafting unit cylinder (16a) (during v) carrying out optimization procedures, simultaneously or measure the amperage I of described drafting unit driver (14b) and the moment of torsion α of described drafting unit cylinder (16a) abreast, this is in order to be no more than the limit value of described drafting unit cylinder (16a) maximum permissible torque α.
20. method of operating according to each described fine spining machine in the previous methods claim, it is characterized in that: improve gradually described driver (14b) rotating speed (n1) and described drafting unit cylinder (16a) rotating speed during, described data processor (64) is also measured the corner (α=α n1 (t2-t1)/30) that increases gradually, and compare with maximum permissible value, along with improving constantly of rotating speed (n1), when arriving the limit value of described drafting unit cylinder maximum permissible torque α, just stop optimization procedure, before the maximum current I consumption that arrives described drafting unit electric drive (14b), finish the optimization of preliminary draft ratio like this.
21. method of operating according to each described fine spining machine in the previous methods claim, it is characterized in that: if ignored improving constantly and exceeding optimum value of the moment of torsion of described drafting unit cylinder (16a) and preliminary draft ratio, the amperage of described drafting unit driver (14b) and/or power input can descend once more, like this, if become zero maybe will become negative the time in the difference of two amperage I (the N+x)-I (N+x1) of (N+x) suboptimization step, described data processor (64) can determine preliminary draft amount (optimum value v).
22. method of operating according to each described fine spining machine in the previous methods claim, it is characterized in that: when reaching optimum speed (n1+xn '), described optimum speed is that described data processor (64) is determined by recording numerical value respectively more continuously, determined rotating speed of target (n1+xn ') is taken as clear and definite desired value, the adjusting of fine spining machine input and/or that select before being used for, described adjustment is finished by described service module (42), and be used for from now on spinning process by described setpoint cell (66), thus, optimum speed behind x iterative step of process (n1+xn ') stop, on described service module (42), be indicated as the empirical value that can be used as yarn batch process from now on, can also preserve by means of described data processor, in addition, can determine that optimized preliminary draft value (vo) is the ratio of the new rotating speed of the new rotating speed of described roller (w1) and described roller (w).
23. according to each the described fine spining machine in the machine dependent claim in front, it is characterized in that: be the necessary parts of optimization preliminary draft amount, as measuring unit (60), memory (62), data processor (64), setpoint cell (66) etc., can be used as the material components of start unit (28a), the perhaps unit of the being mentioned start unit (28a) and/or the centralized control unit (28) that are stored in machine as the routine or key element to the small part of electronic data processing (EDP) program can adopt routine to handle during (EDP) control program carries out optimization procedures handling together with the central electronic data of the centralized control unit (28) of machine thus.
24. method of operating according to each described fine spining machine in the previous methods claim, it is characterized in that: during carrying out optimization preliminary draft ratio, optimum value descends a little, in other words, under the situation that is lower than the maximum possible drafting force, operate, because be brought down below adverse effect that best draw ratio produces yarn qualities than surpassing the little of best draw ratio, thus, what be of practical significance is that the preliminary draft value is chosen in the 70-90% scope of best preliminary draft value, adopt so best preliminary draft value, power input the becoming peak of the electric drive (14b) of described drafting unit cylinder (16a).
25. method of operating according to each described fine spining machine in the previous methods claim, it is characterized in that: relate to optimization preliminary draft amount (v), also to select the distance (S) between described first pair of roller (w) and the described second pair of roller (w1), for this reason, the described distance of optimization (S) and simultaneously optimization preliminary draft speed (v) during, the tension force that reduces fibrous material in crossing over the distance preliminary draft district of (S) whole length is possible, and can not have a negative impact to yarn qualities, can determine in 50 millimeters to 70 millimeters scope that only size is 75 millimeters to described distance (S).
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE2001161522 DE10161522A1 (en) | 2001-12-14 | 2001-12-14 | Spinning machine has controlled drive for drawing unit cylinders, using frequency converter set by machine control, together with start unit at computer to vary predraft action |
| DE10161522.1 | 2001-12-14 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1424447A true CN1424447A (en) | 2003-06-18 |
| CN100445443C CN100445443C (en) | 2008-12-24 |
Family
ID=7709235
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB021561753A Expired - Fee Related CN100445443C (en) | 2001-12-14 | 2002-12-13 | Spinning machines |
Country Status (4)
| Country | Link |
|---|---|
| JP (1) | JP2003201631A (en) |
| CN (1) | CN100445443C (en) |
| DE (1) | DE10161522A1 (en) |
| IT (1) | ITMI20022613A1 (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1900393B (en) * | 2005-07-19 | 2012-05-02 | 株式会社丰田自动织机 | Method for controlling draw device of spinning machine and controller for draw device of spinning machine |
| CN102433629A (en) * | 2011-12-21 | 2012-05-02 | 台达电子企业管理（上海）有限公司 | Monitor system and method for spinning machine |
| CN102947496A (en) * | 2010-05-11 | 2013-02-27 | 氰特科技股份有限公司 | Apparatus and methods for spreading fiber bundles for continuous production of prepreg |
| CN104919098A (en) * | 2013-02-14 | 2015-09-16 | 马佐里机器纺织股份公司 | Method of controlling the drafting (S) of a fibre web in a card apparatus |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| ITMI20051014A1 (en) * | 2004-06-04 | 2005-12-05 | Rieter Ag Maschf | "FILATOIO WITH MORE 'STRETCH DRIVES" |
| JP4670522B2 (en) * | 2005-07-19 | 2011-04-13 | 株式会社豊田自動織機 | Draft device in spinning machine |
| DE102006003941A1 (en) * | 2005-09-19 | 2007-03-22 | Maschinenfabrik Rieter Ag | Spinning machine with rotation and distortion adjustment |
| DE102018112422A1 (en) * | 2018-05-24 | 2019-11-28 | Saurer Spinning Solutions Gmbh & Co. Kg | Drawframe and plug-in unit for a spinning machine |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2911378A1 (en) * | 1979-03-23 | 1980-10-02 | Zinser Textilmaschinen Gmbh | RING SPIDER OR RING TWISTING MACHINE |
| US5022123A (en) * | 1988-09-29 | 1991-06-11 | Murata Kikai Kabushiki Kaisha | Draft mechanism having roller pairs connected to draft ratio controlled motors by timing belts |
| CH685164A5 (en) * | 1992-03-05 | 1995-04-13 | Zellweger Uster Ag | Method and apparatus for controlling the delay of a drafting. |
| CN1156192A (en) * | 1995-10-11 | 1997-08-06 | 里特机械公司 | Spinning frame with independent drafting roller driving device |
| ITMI981590A1 (en) * | 1997-07-31 | 2000-01-10 | Rieter Ag Maschf | DRIVE COMMAND FOR A THREADER |
| JP2000303269A (en) * | 1999-04-23 | 2000-10-31 | Howa Mach Ltd | Draft roller-driving device in spinning machine |
| DE19945797B4 (en) * | 1999-09-24 | 2008-01-31 | Maschinenfabrik Rieter Ag | Spinning machine with several drafting drives |
-
2001
- 2001-12-14 DE DE2001161522 patent/DE10161522A1/en not_active Withdrawn
-
2002
- 2002-12-10 IT ITMI20022613 patent/ITMI20022613A1/en unknown
- 2002-12-13 CN CNB021561753A patent/CN100445443C/en not_active Expired - Fee Related
- 2002-12-16 JP JP2002364357A patent/JP2003201631A/en not_active Ceased
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1900393B (en) * | 2005-07-19 | 2012-05-02 | 株式会社丰田自动织机 | Method for controlling draw device of spinning machine and controller for draw device of spinning machine |
| CN102947496A (en) * | 2010-05-11 | 2013-02-27 | 氰特科技股份有限公司 | Apparatus and methods for spreading fiber bundles for continuous production of prepreg |
| CN102433629A (en) * | 2011-12-21 | 2012-05-02 | 台达电子企业管理（上海）有限公司 | Monitor system and method for spinning machine |
| CN104919098A (en) * | 2013-02-14 | 2015-09-16 | 马佐里机器纺织股份公司 | Method of controlling the drafting (S) of a fibre web in a card apparatus |
Also Published As
| Publication number | Publication date |
|---|---|
| DE10161522A1 (en) | 2003-06-18 |
| CN100445443C (en) | 2008-12-24 |
| ITMI20022613A1 (en) | 2003-06-15 |
| JP2003201631A (en) | 2003-07-18 |
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