CN1946890A - Electronic positive feedwheel unit - Google Patents
Electronic positive feedwheel unit Download PDFInfo
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- CN1946890A CN1946890A CNA2005800128451A CN200580012845A CN1946890A CN 1946890 A CN1946890 A CN 1946890A CN A2005800128451 A CNA2005800128451 A CN A2005800128451A CN 200580012845 A CN200580012845 A CN 200580012845A CN 1946890 A CN1946890 A CN 1946890A
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- 238000009940 knitting Methods 0.000 claims description 32
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- 230000011664 signaling Effects 0.000 claims description 2
- 238000004804 winding Methods 0.000 abstract description 4
- 238000000034 method Methods 0.000 description 10
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- 230000008569 process Effects 0.000 description 8
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- 238000001514 detection method Methods 0.000 description 4
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- 230000000694 effects Effects 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 230000003068 static effect Effects 0.000 description 3
- 230000001360 synchronised effect Effects 0.000 description 3
- 238000009941 weaving Methods 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 238000002788 crimping Methods 0.000 description 2
- 230000033001 locomotion Effects 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
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- 238000005516 engineering process Methods 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 238000009432 framing Methods 0.000 description 1
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- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04B—KNITTING
- D04B15/00—Details of, or auxiliary devices incorporated in, weft knitting machines, restricted to machines of this kind
- D04B15/38—Devices for supplying, feeding, or guiding threads to needles
- D04B15/48—Thread-feeding devices
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Abstract
The invention relates to a thread feeding device which is provided with a motor-driven feedwheel, whereby the rotational position of the feedwheel is detected by a high precision angle transmitter. Said angle transmitter has a resolution that is greater than the diameter of the feedwheel measured in millimeters. Preferably, resolution is greater than the five times (preferably 5.24 times) the value of the diameter of the feedwheel. The thread is preferably wound around the feedwheel in a plurality of windings (three to twenty).
Description
Technical field
The application relates to a kind of thread delivery device, and it is particularly suitable for actively transmitting yarn and gives knitting machine, for example circular knitting machine.
Background technology
Comprise circular knitting machine about knitting machine, the size of the coil that produces by single system for weaving is determined by the yarn that accurate distribution enters knitting station.In order to weave smooth product, well set up this principle by using mechanically operated thread feeder.In this, exploring the mechanical connection that device electricity consumption and electronics substitutes rigidity between yarn transfer device and the knitting machine for a long time.
For example, United States Patent (USP) 3858416 discloses a kind of knitting machine of thread feeder that has electricity, its can with a kind of mode of voltage-regulation or with the synchronous mode of main hydraulic cylinder by driven.For the operation of a kind of form after finishing, a sensor magnetic or other type is provided on the main driving machine structure of knitting machine, it produces train pulse, and the frequency of pulse is corresponding with the speed of knitting machine.A frequency becomes voltage with these pulses switch, so voltage is the sign of knitting machine service speed.
Motor-driven thread feed wheel is connected with a tachometer generator, and tachometer generator also is connected with a frequency, so that the voltage of a sign motor revolutions per minute to be provided.A comparison circuit compares the voltages of two frequency outputs, and therefore controls the motor of thread feeder.
The generation of the deviation between desired output and the actual output is relevant with this arrangement in principle, deviation effects the quality of knitwear.
Attempt using the driven by power yarn feed wheel with a lot of ways.For example DE3824034C1 discloses by stepper motor and has driven yarn feed wheel.
Can not any switch stepper motor.As an alternative, need when starting and slowing down, keep the mode of operation of regulation, so can the generation step mistake.
Make great efforts to be found in DE1574430 more, be used for carrying band shape or strip material particularly yarn at a predetermined velocity to the use location.A power-actuated motor is provided endways, and its axle is connected with delivery wheel.Herein, an arrangement of clutch allows delivery wheel to connect and disconnection from drive motors arbitrarily.Delivery wheel is as the revolutions per minute measurement mechanism.Settle voltmeter at the delivery wheel upstream and downstream.Under the assembling mode of operation, delivery wheel from motor shaft separately writes down the per minute rotating speed of yarn feed wheel thereafter, to give basis of operating and setting of motor back.
The activation of clutch need be carried out assembly manipulation.The damping unit that is provided on the yarn path also applies braking action to yarn.Therefore, for knitting machine, provide the amount of yarn can be subjected to unexpected influence.Clutch has the mass inertial force square, and it can be applied on the mass inertia moment of yarn feed wheel and motor.
Summary of the invention
Based on above, the purpose of this invention is to provide a thread delivery device that is particularly suitable for knitting machine, particularly change the knitting machine of yarn, and in this process, allow the conveying quality of height for needs.
This purpose realizes by the thread delivery device of claim 1.
Thread delivery device according to the application has a yarn feed wheel, its motor and have predetermined diameter of being rigidly connected.Yarn feed wheel can have round or polygonal cross section in the case.For example it can be a cylindrical shape.A replacement is holistic yarn feed wheel, and the deep draw sheet metal forms, and for example provides rib longitudinally to its circumference, therefore imitates out the outline of a cylinder.Other yarn feed wheel also is fine.Can surround with a crimping that leans against on the whole circumference.But crimping also can only contact the part of delivery wheel circumference and for example can be transmitted on (that fix or static) emission pin.An angular encoder is provided in addition, and it is to be connected with yarn feed wheel in contrast to counterrotating fixed form, and angular encoder produces the signal of each position of rotation of distinguishing yarn feed wheel.Gao Du angular resolution is absolutely necessary in the case, and the ratio of diameter that will be high enough to the step number of angular encoder and yarn feed wheel at least is greater than 3 every millimeter.Under the situation of angular resolution greater than this critical value, yarn feed wheel can be positioned so accurately, makes can both reach being synchronized with the movement of yarn feed wheel and knitting machine in all important operation stages of knitting machine.If the angular resolution of angular encoder is higher than the value of mentioning, if and the position of rotation of motor is positioned at the position adjustments loop accordingly, starting so and stop a knitting machine of positive thread feeder that has electricity, do not fear the fixedly line that occurs and do not produce, is possible.Fixedly line is understood to be in the knit materials and compares the row with different size with the residue line.
Preferably, angular encoder is connected with motor shaft, and an axle that runs through motor is wherein arranged in a preferred embodiment, and an end of axle settles the yarn feed wheel other end to settle angular encoder.Angular encoder is preferably the incremental encoder with high increment number.At 40 millimeters diameter place, angular encoder has at least 120 steps, promptly has at least 3 ° angular resolution.Ratio s/d in the preferred embodiment ratio of delivery wheel diameter (the step number with) is greater than 5.(" step number " is interpreted as during a rotation quantity of the step that can be differentiated by angular encoder).Angular encoder has resolution ratio greater than 200 steps to each rotation of delivery wheel in the case.This is corresponding at least 1.8 ° or better resolution ratio.S/d was greater than 5: 24 under a preferred situation.The delivery precision of carrying about yarn can obtain from the position adjustments loop by this way, and is irrelevant with the diameter of each yarn feed wheel, wherein carries deviation less than 0.6 millimeter.This obtains free from error knitwear, even stops when the service speed of knitting machine changes and when starting.
By high-resolution angular encoder, produce a kind of positive thread feeder of electricity by this way, it not only provides accurate conveying, but also can be by Long-distance Control.For example when producing figuratum knitwear, it can be switched on or disconnect with a kind of special mode.Positive thread feeder according to the application's electricity has substituted out-of-date friction-type thread feeder by this way, and it is also using so far.It when producing figuratum product with a kind of improved procedure control coil size.Positive thread feeder to electricity under a kind of optimal way provides a pulse train as control signal, and wherein each pulse is corresponding to an angle step of yarn feed wheel.For example, this angle step is corresponding with the angle step corresponding to the angular resolution of position sensor.Preferably, its size is preferably 0.6 millimeter yarn transfer passage corresponding to one 1 millimeter.Thread delivery device receives each step, and the rotary yarn delivery wheel is 0.6 millimeter length of yarn forward.Continuous control to conveying capacity corresponding with the rotation of the main hydraulic cylinder of knitting machine can be adopted this mode.In fact the feed unit of Position Control works in the mode the same with stepper motor driven feed unit.
Thread delivery device preferably can hold an apparatus for adjusting position, and it compares the position, angle of the detected yarn feed wheel of angular encoder and the signal of hope all the time, and correcting action.In an expansion embodiment, apparatus for adjusting position also can be the part that the adjusting of tractive force is made.An additional in the case yarn tension sensor, the actual tension of its detection yarn of providing.If it has departed from the predetermined tension value of wishing, will produce suitable framing signal, next it changed by apparatus for adjusting position.Tension-adjusting gear is embodied as a PD adjuster that has disturbance-variable compensation in the case.This means that adjuster has a part (" P ") of amplifying in proportion and a differential part (" D ").A corrected value that depends on detected yarn tension, actual fed speed and may depend on current of electric is connected with the tension value of hope, so that the mode that the permanent adjusting deviation that adjusting device causes disappears is proofreaied and correct tension value.
Further development, thread delivery device according to the present invention has first operator scheme, under this pattern, depends on embodiment, and it is operated with positive thread feeder position adjustments as a tension adjustment.Under an additional operations pattern, also can be called as the drag operation pattern, the electric current of motor is lowered to the degree that can not drive thread feed.Current of electric is overcome constantly and does not produce with all lockings of motor and drives constantly in the case, is to be set under the not enough mode for thread feed constantly at the most perhaps.As long as relevant, there is not positive thread feeder in this operational phase with yarn processing machine.But yarn processing machine need be from a yarn source for example bobbin cradle obtain yarn.The driving of motor is constantly the most much to enough making this process become easy in the case.Only some is that thread feeder provides to the power that yarn is pulled down from bobbin cradle in the case.Therefore yarn feed wheel is actually from motor shaft and breaks away from, at least to can not provide any feed to degree.Yarn processing machine or its system for weaving can overcome a little resistance and pull out yarn.A circuit that is connected in motor and incremental encoder can accurately detect the amount of thread of acquisition, and makes amount of thread become the basis of next step operation of thread delivery device under positive thread feed pattern.
Description of drawings
The details of the application's advantageous embodiments is the theme of accompanying drawing, specification or claims.The embodiment of the application's illustrative is illustrated in the drawings.Wherein:
Accompanying drawing 1, the thread feeder of the position adjustments of a plurality of electricity and they are connected with the center control device, schematically expression,
Accompanying drawing 2 is designed to the thread feeder of tension adjustment, is connected with the center control device, and schematically expression,
Accompanying drawing 3, the thread feeder of accompanying drawing 1 has the operation of an additional drag pattern, and schematically expression is connected with the center control device,
Accompanying drawing 4 is schematically represented an angular encoder of thread feeder,
Accompanying drawing 5, the output signal of the angular encoder of accompanying drawing 4,
Accompanying drawing 7, schematically expression has the thread feeder of the tension adjustment of disturbance-variable compensation,
The specific embodiment
One group of thread delivery device that is connected with center control device 41,2,3 is illustrated in accompanying drawing 1.Control device 4 can be a center control device, and it can be the part of knitting machine, also can be an independent part or is accommodated in a the inside in the thread delivery device 1,2,3.Thread delivery device is only with form performance for example.If desired, can provide only a thread delivery device 1 or bigger thread delivery device group.
The quantity of thread delivery device 1,2,3 is corresponding to flowing to for example number of yarns of circular knitting machine of yarn processing machine, therefore corresponding to the quantity of knitting position.Structure is identical each other for they.Therefore, hereinafter be suitable for other thread delivery device and other thread delivery device possible, that do not illustrate for the description correspondence of thread delivery device 1.
One one thread winding yarns delivery wheel 5 twines at least one, preferably several coils of wire 11.The coil of wire 11 comprises at least one, yet preferably several reel 12.In the rotary course of yarn feed wheel 5, yarn 9 arrives the storage area of the yarn feed wheel that is positioned at top edge 9, forms coiling side by side in this process, and therefore axially promotes the coil of wire 11 downwards.In order to make this process easier, yarn feed wheel 5 can have a slight tapering.Along with the motion of yarn feed wheel 5, the coil of wire 11 moves on yarn feed wheel 11 thus continuously.
The structure of angular encoder 17 is shown in accompanying drawing 4 with way of example.It is made up of a synchro resolver with armature of armature coil 18 in the case, and its longitudinal axis extends transverse to its rotating shaft.Rotating shaft extends along the direction perpendicular to paper in accompanying drawing 4.Armature coil 18 is connected with power supply coil 19, and power supply coil 19 is by axial orientation, and receives an ac-excited signal by static external coil, herein detailed description no longer.The coil axes radial directed also is offset two stator coils 21,22 of 90 °, detects the alternating field that produces by armature coil 18.Consequent signal process is shown in accompanying drawing 5.Corresponding to the position of armature coil 18, the amplitude of the voltage that stator coil 21,22 produces rises or descends with sine or cosine shape.For example, under the situation of anglec of rotation p, a positive voltage U
1Being included in the stator coil 21, is a negative voltage U in stator coil 22
2Conclusion about anglec of rotation p can obtain from voltage by arcsine or inverse cosine function.
For step is counted, it for example is a light emitting diode that light source 27 is provided, and is arranged in a side of disk 23,24.A light-sensitive element 28 is provided, for example photo resistance, photistor or like are in an opposite side.If the detection direction of rotation provides one or two such photoelectricity barrier, it is luminous from another position, and to pass disk right.
Accompanying drawing 8 has shown the embodiment of another modification of angular encoder, has Hall element 21a, 21b, 22a, 22b on the zone that a rotatable permanent magnet M and four are placed in the latter.For example they can be used as electric bridge switch together.Such angular encoder can be installed on some brushless electric machines in any way, for example is used for controlling the electronic switch that is used for triggering motor coil.If, occur in the value of the voltage on Hall element 21a, 21b, 22a, the 22b by calculating, this angular encoder 17 allows that rotation is decomposed into step and counts s, it is equal to or greater than the step number that obtains under these conditions, and this angular encoder that is positioned at motor internal can be with the position sensor that connects control loop.In fact brshless DC motor has become stepper motor by this way, and it is compared with known stepper motor any step mistake can not occur, even considers per minute rotating speed also not significantly change.This actual stepper motor can be operated in the mode that starts/stop, and without any need for special start-up control or shutdown control.
The signal that is sent by the optical pickocff of the synchro resolver of accompanying drawing 4 or accompanying drawing 5 offers a control loop 29 (accompanying drawing 1) as actual position signal.Comparator 31 is parts of the latter, and it is relatively from the actual position signal of angular encoder 17 and the desired locations of pre-selection unit 32.Each is present in the deviation of desired locations signal and actual position signal as 33 to regulating loops 34 of an angular error signal process branch, and the adjusting motor 14 of its correspondence is so that the desired locations signal reaches consistent with actual position signal.
The actual position signal of all thread delivery devices 1 to 3 can at random conduct to control device 4 via suitable lead 35.Lead 35 can directly conduct the signal from angular encoder 17 in the case, because their connection angle encoders 17 and control device 4.Also lead 35 can be designed to data/address bus, it is via suitable interface connection angle encoder 17.This comprises the data/address bus that all are known, and single bus.
Control device 4 transmits control impuls 36 to pre-selection unit 32 via lead 36.Therefore the thread delivery device 1,2,3 of operation repetitive can be by parallel control.Control device 4 sends individual pulse in the embodiment of this illustrative, and wherein each signal pulse of the rotation of motor 14 step is corresponding to the angular resolution of angular encoder 17.If angular encoder 17 is structures of accompanying drawing 4, and it comprises an evaluation circuit that connects stator coil 21,22, it will become analog signal or data signal from the signal transition that stator coil 21,22 obtains, and it clearly characterizes the anglec of rotation, and therefore pre-selection unit 32 is also specialized.It has a counter in the case, and for example it is alternately counted from 0 to maximum the step number of angular encoder 17, restarts then.The block signal of the right quantity of step simulation or numeral produces from the single step pulse of carrying via lead 36 by this way.In case pulse is sent via lead 36, motor 14 rotations.If there is not pulse to arrive, motor stops.From external observation, the picture stepper motor of motor 14 performances in this way, it carries out an angle step for each pulse of carrying via lead 36.But as the result of internal regulation, they do not have the step mistake, therefore are different from common stepper motor, and it is all no problem that they start and stop.
Supposing provides thread delivery device 1 to 3 to knitting machine, and knitting machine is designed to jacquard knitting machine for example or has the knitting machine of printing equipment.Each thread delivery device 1,2,3 provides a knitting position that has each yarn 9.If each knitting position will be provided yarn, control device 4 transport pulse are to the unit 32 of suitable preliminary election, the suitable rotation of yarn feed wheel 5 thus.They change prearranged signals into actual angle in this process, and wherein existing angular deviation about the yarn feed wheel circumference is less than 1 millimeter, but are preferably less than 0.6 millimeter.This be ratio s/d greater than 3, be preferably greater than the result that 5 every millimeter demands obtain.Provide this method to make possible angle error be reduced to other below error effects.The part of especially this error effects of the slip of rib 11 on yarn feed wheel 5.As long as yarn feed wheel 5 rotations, rib 11 is mobile along being directed downwards of unwinding yarn by the yarn of introducing.Because existing endwisely slipping, certain slip also takes place at circumferencial direction in rib 11 certainly.This means that certain slip takes place yarn on yarn feed wheel 5.The circumference of preferred yarn feed wheel and the merchant of angular resolution s slide less than this, for example less than 1 millimeter, preferably less than 0.6 millimeter.The knitting machine of a this thread delivery device 1 to 3 of configuration can stop and restarting, and not produce fixedly line from stopping startup again, promptly has the row of different size.
The transporting velocity of yarn 9 can increase, reduce or be made as 0 via the pulse of lead 36 by particular delivery.Therefore, it is feasible carrying about the positive yarn of jacquard knitting machine.
Expansion is the embodiment of explanation so far, can provide yarn tension sensor 37 to thread delivery device 1 to 3, the tension force of its monitoring unwinding yarn.For example, tension pick-up can be connected to influence the tolerance of yarn with pre-selection unit 32.In addition, above-mentioned explanation also is suitable for accordingly.Use identical Reference numeral.If desired, to the mode operate yarn transport 1,2,3rd of this embodiment, possible with tension adjustment.For example, a yarn tension signal transmits by line 36.Pre-selection unit 32 is compared the detected actual tension of itself and yarn tension sensor, and produces a suitable position signalling.It changes the rotation of yarn feed wheel 5 conversely into by control loop 29.
This thread delivery device 1 to 3 can be used as the Yarn feed device blocked operation of a positive Yarn feed device or a tension force guiding, promptly with constant transporting velocity or constant amount of thread delivered yarn.
Accompanying drawing 7 illustrates replenishing for the thread delivery device 1 to 3 of accompanying drawing 2.Pre-selection unit 32 and regulating circuit 34 are formed an apparatus for adjusting position 38 herein.For an input 39, the latter receives a tension force preselected signal.It receives an actual tension signal from yarn tension sensor 37.For another input, angular encoder 17 sends an actual position signal.Yarn feed wheel 5 detected and and input 42 of feeding back a tension regulator 38 when driving and quicken by current sensor 41.Therefore tension regulator 38 is received speed about moving yarn, is acted on the accelerating torque on the armature and the signal of braking moment and yarn tension.It is presented as a PD adjuster.Produce an error signal from yarn speed, yarn tension and current of electric, it imposes on the PD adjuster as a disturbance variable.Produced the adjuster of a reinforcement by this way, its adjusting deviation is not considered their elasticity for the yarn of nearly all existence, all is little, and it very rapidly responds the change at the prearranged signals at input 39 places.
Accompanying drawing 3 illustrates further developing of thread delivery device 1 to 3 based on the embodiment of accompanying drawing 1.At first, with reference to for accompanying drawing 1, comprise the explanation of the illustrative example of accompanying drawing 4 to 6.Amplify following use:
Regulating circuit 34 has an additional control input, and it can be simplified as a regulating circuit and be transformed into the drag operation pattern there.This control input is connected with control device 4 by lead 43 or suitable bus.In case regulating circuit 34 is received appropriate signal via lead 43, it converts a drag operation pattern to.Here, motor 14 is transfused to a weak current, and it is enough to overcome the possible locking of motor 14 constantly at least.Then the latter be " invisible " up to relating to yarn feed wheel 5, promptly weak current does not hinder the rotation of yarn feed wheel 5, because a pulling force is arranged on yarn 5.This is corresponding to motor 14 actual disengagement from the yarn feed wheel 5.Single yarn treatment position (system for weaving) self can obtain yarn and not be subjected to the obstruction of motor under this state.Control device 4 obtains the amount of yarn via lead 35 records.Can determine preset value from detected value, it is sent out via the form of lead 36 with suitable control impuls in positive operating process subsequently.
Under the drag operation pattern, also may produce a little driving torque, become easy so that knitting position obtains yarn.Yet the moment of motor 14 or control electric current are so little so that do not have because provide electric current and delivered yarn to motor 14.
The high-resolution of the angular encoder 17 that exists adds the possible sensor that is positioned at motor, and for example Hall element also has positive effect at knitting position to detecting the amount of thread that obtains.Consider that to the measurement of natural yarn under the drag operation pattern operation is not stopped constantly fully, and this almost is impossible for traditional stepper motor.
A kind of thread delivery device that provides motor-driven yarn feed wheel, wherein the position of rotation of yarn feed wheel is highly accurately detected by an angular encoder.Angular encoder has at least one resolution ratio s, and it is measured with millimeter greater than the circumference of yarn feed wheel 5.Preferably resolution ratio s is greater than 5 times (being preferably 5.24 times) of the winding diameter of yarn feed wheel.Yarn feed wheel is preferably reeled (3 to 20) circle firmly by several circles.
The Reference numeral table:
1,2,3 thread delivery devices
4 control device
5 yarn feed wheels
6,7 edges
8 ribs
9 yarns
11 coils of wire
12 reel
13 axles
14 motors
15 feeder lines
16 ends
17 angular encoders
18 armature coils
19 power supply coils
21,22 stator coils
21a, 21b, 22a, 22b Hall element
23,24 disks
5,26 leads
27 light sources
28 elements
29 control loops
31 comparators
32 pre-selection units
33 branches
34 regulating circuits
35 leads
36 leads
37 yarn tension sensors
38 tension regulators
39 inputs
41 current sensors
42 inputs
43 leads
The p anglec of rotation
The d diameter
S step number
The M permanent magnet
U
1, U
2Voltage
Claims (17)
1. a thread delivery device (1) is specially adapted to knitting machine,
Have a yarn feed wheel (5), the yarn that be transferred (9) is reeled with at least one coiling (12) around it so that delivered yarn (9),
Have a motor (14), it has an axle (13), is connected with yarn feed wheel (5) to prevent counterrotating fixed form.
Has an angular encoder (17) that is used for detecting yarn feed wheel (5) position of rotation, wherein angular encoder (5) has angular resolution (s), and angular resolution is at least greatly to making ratio (s/d) between the diameter (d) of angular resolution (s) and yarn feed wheel (5) greater than 3mm
-1
2. according to the thread delivery device of claim 1, it is characterized in that angular encoder (17) is connected with axle (13).
3. according to the thread delivery device of claim 1, it is characterized in that axle (13) is an axle that extends through motor (14), at one end anchor yarns delivery wheel (5), the other end (16) fixed angle encoder (17).
4. according to the thread delivery device of claim 1, it is characterized in that angular encoder (17) is an incremental encoder.
5. according to the thread delivery device of claim 1, it is characterized in that angular encoder (17) is a kind of encoder.
6. according to the thread delivery device of claim 1, it is characterized in that angular encoder (17) is a kind of optics step sensor.
7. according to the thread delivery device of claim 1, it is characterized in that angular encoder (17) has an angular resolution (s), it is at least greatly to making ratio (s/d) between the diameter (d) of angular resolution (s) and yarn feed wheel greater than 5mm
-1
8. according to the thread delivery device of claim 1, it is characterized in that angular encoder (17) is connected with the actual value input of control loop (29).
9. thread delivery device according to Claim 8 is characterized in that, control loop (29) has a desired value input, and it is designed to receive outside desired locations signal.
10. thread delivery device according to Claim 8 is characterized in that, control loop (29) is a kind of PD adjuster.
11. thread delivery device according to Claim 8 is characterized in that, control loop (29) is connected with tension regulator (38), and tension regulator (38) has a device that is used for disturbance-variable compensation.
12. thread delivery device according to Claim 8 is characterized in that, control loop (29) is connected with a yarn tension sensor (37), is used for detecting yarn tension.
13. the thread delivery device according to claim 12 is characterized in that, a comparison circuit (32) connects yarn tension sensor (37), and it compares the yarn tension that detects with the expectation yarn tension, and according to the described position signalling of relatively determining expectation.
14. thread delivery device according to claim 1, it is characterized in that, motor (14) is connected with a regulating circuit (34), and regulating circuit (34) is used for the drag operation pattern, and the electric current that wherein offers motor (14) causes a torque that is not enough to independent delivered yarn.
15. the thread delivery device according to claim 14 is characterized in that, a control circuit (34) is provided, it is by the rotation of angular encoder (17) record motor (14) under the drag operation pattern.
16. the thread delivery device according to claim 15 is characterized in that, obtains a tolerance for the operator scheme of positive conveying according to the rotation of being write down.
17. the thread delivery device according to claim 16 is characterized in that, tolerance is according to the rotation of a plurality of thread delivery devices that write down (1,2,3) and obtain.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102004009057A DE102004009057A1 (en) | 2004-02-23 | 2004-02-23 | Electronic positive |
| DE102004009057.2 | 2004-02-23 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1946890A true CN1946890A (en) | 2007-04-11 |
Family
ID=34833028
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2005800128451A Pending CN1946890A (en) | 2004-02-23 | 2005-01-26 | Electronic positive feedwheel unit |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US20070272784A1 (en) |
| EP (1) | EP1718792A1 (en) |
| CN (1) | CN1946890A (en) |
| BR (1) | BRPI0507981A (en) |
| DE (1) | DE102004009057A1 (en) |
| WO (1) | WO2005080654A1 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101486421B (en) * | 2008-01-17 | 2013-04-24 | B.T.S.R.国际股份公司 | System for controlling the feed of a yarn or wire to a machine, and relative method |
| CN111350022A (en) * | 2020-03-12 | 2020-06-30 | 浙江恒强科技股份有限公司 | Constant tension control method of computerized flat knitting machine |
| CN112095218A (en) * | 2019-06-18 | 2020-12-18 | 美名格－艾罗有限公司 | Yarn feeding device and method for feeding yarn to a textile machine |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| ITTO20050225A1 (en) * | 2005-04-06 | 2006-10-07 | Lgl Electronics Spa | POSITIVE YARN FEEDER FOR TEXTILE AND SIMILAR MACHINES |
| ITTO20070767A1 (en) | 2007-10-26 | 2008-01-25 | Elsy S R L | METHOD OF CONTROL FOR POSITIVE YARN FEEDERS |
| BE1023220B1 (en) * | 2015-07-03 | 2017-01-03 | Nv Michel Van De Wiele | FEEDING DEVICE FOR SUPPLY OF YARN, METHOD FOR DETERMINING THE YARN VOLTAGE AND USE OF CONTROL MEANS FOR CONTROLLING ACTUATORS FOR SUPPLY OF YARN |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4953044A (en) * | 1988-10-28 | 1990-08-28 | Storage Technology Corporation | Closed loop tape thread/unthread apparatus |
| DE4206607A1 (en) * | 1991-09-26 | 1993-04-01 | Erich Roser | THREAD DELIVERY DEVICE FOR THREAD USING TEXTILE MACHINES |
| SE511091C2 (en) * | 1993-04-21 | 1999-08-02 | Sipra Patent Beteiligung | Yarn feeder for textile machines |
| US5912541C1 (en) * | 1994-11-30 | 2002-06-11 | Animatics Corp | Integrated servo motor and controller |
| US6082653A (en) * | 1996-10-31 | 2000-07-04 | Ampex Corporation | System for estimating tape pack radius using a Kalman filter |
| DE19813351A1 (en) * | 1998-03-26 | 1999-09-30 | Memminger Iro Gmbh | Low inertia positive feeder for elastomer threads |
| ITMI20012063A1 (en) * | 2001-10-05 | 2003-04-05 | Orizio Paola Spa | ELECTRONIC DEVICE FOR REGULATION AND CONTROL OF THE DIFFERED DISPENSING COMING FROM THE POWER SUPPLY UNIT OF TEXTILE MACHINES |
| US6745597B2 (en) * | 2001-12-31 | 2004-06-08 | China Textile Institute | Positive feeding method and apparatus of an encoder |
| DE10234545B4 (en) * | 2002-07-30 | 2005-12-15 | Memminger-Iro Gmbh | Method and device for delivering threads |
| ITVI20030117A1 (en) * | 2003-06-18 | 2004-12-19 | Orizio Paolo Spa | ELECTRONIC DEVICE FOR THE SUPPLY OF YARN AD |
-
2004
- 2004-02-23 DE DE102004009057A patent/DE102004009057A1/en not_active Withdrawn
-
2005
- 2005-01-26 US US10/590,242 patent/US20070272784A1/en not_active Abandoned
- 2005-01-26 EP EP05701184A patent/EP1718792A1/en not_active Withdrawn
- 2005-01-26 CN CNA2005800128451A patent/CN1946890A/en active Pending
- 2005-01-26 BR BRPI0507981-0A patent/BRPI0507981A/en not_active IP Right Cessation
- 2005-01-26 WO PCT/EP2005/000736 patent/WO2005080654A1/en active Application Filing
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101486421B (en) * | 2008-01-17 | 2013-04-24 | B.T.S.R.国际股份公司 | System for controlling the feed of a yarn or wire to a machine, and relative method |
| CN112095218A (en) * | 2019-06-18 | 2020-12-18 | 美名格－艾罗有限公司 | Yarn feeding device and method for feeding yarn to a textile machine |
| CN111350022A (en) * | 2020-03-12 | 2020-06-30 | 浙江恒强科技股份有限公司 | Constant tension control method of computerized flat knitting machine |
Also Published As
| Publication number | Publication date |
|---|---|
| US20070272784A1 (en) | 2007-11-29 |
| BRPI0507981A (en) | 2007-07-24 |
| EP1718792A1 (en) | 2006-11-08 |
| WO2005080654A1 (en) | 2005-09-01 |
| DE102004009057A1 (en) | 2005-09-08 |
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