EP0943713A2 - Fadenspannungssensor mit wiederholtem Abgleich - Google Patents
Fadenspannungssensor mit wiederholtem Abgleich Download PDFInfo
- Publication number
- EP0943713A2 EP0943713A2 EP99104418A EP99104418A EP0943713A2 EP 0943713 A2 EP0943713 A2 EP 0943713A2 EP 99104418 A EP99104418 A EP 99104418A EP 99104418 A EP99104418 A EP 99104418A EP 0943713 A2 EP0943713 A2 EP 0943713A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- thread
- tension sensor
- sensing element
- calibration
- thread tension
- 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.)
- Granted
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Classifications
-
- 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
- D04B15/50—Thread-feeding devices for elastic threads
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H59/00—Adjusting or controlling tension in filamentary material, e.g. for preventing snarling; Applications of tension indicators
- B65H59/40—Applications of tension indicators
-
- 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
- D04B15/44—Tensioning devices for individual threads
- D04B15/46—Tensioning devices for individual threads for elastic threads
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H2553/00—Sensing or detecting means
- B65H2553/20—Sensing or detecting means using electric elements
- B65H2553/22—Magnetic detectors, e.g. Hall detectors
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H2557/00—Means for control not provided for in groups B65H2551/00 - B65H2555/00
- B65H2557/60—Details of processes or procedures
- B65H2557/61—Details of processes or procedures for calibrating
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H2601/00—Problem to be solved or advantage achieved
- B65H2601/50—Diminishing, minimizing or reducing
- B65H2601/52—Diminishing, minimizing or reducing entities relating to handling machine
- B65H2601/524—Vibration
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H2701/00—Handled material; Storage means
- B65H2701/30—Handled filamentary material
- B65H2701/31—Textiles threads or artificial strands of filaments
- B65H2701/319—Elastic threads
Definitions
- the invention relates to a thread tension sensor, in particular for supplying elastic threads to knitting machines Thread delivery device for knitting machines and a method for Adjusting a thread tension sensor.
- Thread delivery device for elastic yarns known for Use on flat knitting machines.
- the Thread delivery device is used to supply elastane threads and has a thread delivery wheel driven by an electric motor on.
- the electric motor is controlled by a control loop controlled with the current thread tension a thread tension sensor detected.
- This has one pin that can be deflected transversely to the thread running direction, over which the thread is guided at an obtuse angle. The deflection of the pin corresponds to the thread tension and is detected by a suitable displacement sensor.
- DE 39 42 341 A1 describes a force sensor for Monitoring thread tension known in the case of a Sensor element is mounted on a spring parallelogram.
- the deflection of the sensor element is based on a a flexible body provided with variable resistance transmitted so that the deflection of the sensor element and thus the thread tension is electrically detectable.
- the constant tension is particularly important when supplying elastic threads for the production of elastic knitted fabrics of great importance. Even the slightest fluctuations and especially propose long-term changes itself in a changing or changing Quality. Therefore, the thread tension also applies over long periods, i.e. Hours, days and months to keep stable away.
- Knitting machines and thread delivery devices are becoming common used in workshops in which, not least due to the heat loss of the knitting machines, the temperature throughout the day and according to the duration that changes machines. This also changes Temperatures of the thread tension sensors, what despite possibly existing temperature compensation influences whose output signal can have. They can also be long term Dirt deposits for a change in the sensor output signal cause, for example, deposits the total weight on a pin to record the thread tension of the pen and thus the zero point shift the signal.
- Thread tension sensor to create a long-term stable Detection of the thread tension enables. Furthermore a thread delivery device is to be created that the Thread with a flat knitting machine, for example constant thread tension. After all it is Object of the invention, a method for operating a To create thread tension sensor when using it the sensor has a reliable long-term stable output signal delivers.
- This task is done with a thread tension sensor with the features of claim 1, with a thread delivery device with the features of claim 17 and a method according to claim 22 solved.
- the thread tension sensor according to the invention has except for its thread sensing element, which is used to measure thread tension is in contact with the thread, a thread take-up means on that is movably mounted. At least it points two different positions on each other differ in that the thread is in a calibration position is separated from the thread sensing element and in the Measuring position of the thread take-up means on the thread sensing element is present. It is therefore through targeted adjustment of the thread take-up means and / or the thread tension sensor possible, the thread arbitrarily from the thread sensing element take off so that it comes to its rest position. This is characterized by the fact that no force acts on the thread sensing element. The measuring device detects this position or state of the thread sensing element.
- the thread tension sensor has drifted, can this when lifting the thread from the thread sensing element recognized and recorded. For example, that Lifting the thread from the thread sensing element for zero adjustment of the thread tension sensor can be used. On this way, long-term offsets can be avoided, otherwise the output signal of the thread tension sensor would overlay.
- offset influences for example by temperature drift or by deposits on the Thread sensing element could be caused in the long run generates a sensor output signal that is the thread tension reproduces zero-point errors. This enables the construction of a thread delivery device with high Long-term constant thread tension.
- Thread take-up means the thread to the thread sensing element; for calibrating it leaves the thread from the thread sensing element take off.
- Thread take-up means remove the thread from the thread sensing element path; for measuring it leaves the thread on the thread sensing element issue.
- the calibration or zero point adjustment process is preferably carried out when the thread delivery device provides no thread. During this period by zeroing induced or permitted thread tension fluctuations cannot interfere here of the knitwear produced. Alternatively it is possible to adjust the zero point with a short time Lifting the thread from the thread sensing element, if the thread moves slowly or his Movement speed currently does not change. In this Fall is the control device regulating the thread delivery briefly hidden, i.e. their output signal will be on the current value is clamped, the zero point adjustment carried out and after replacing the thread on the The thread loop sensor is activated again.
- the calibration process is then carried out when it is allowed (released) and (as a second criterion) when requested.
- This is usually regular Time intervals the case.
- the time intervals can be shorter after switching on the machine (2 min.) and longer after running in (30 min.).
- the thread tension sensor preferably has one Drive device assigned to thread take-up means, for example a pull magnet or another Drive (electric or pneumatic rotary, swivel or Linear drive) on by a calibration device can be activated and the thread take-up means drives such that this in its first thread of the thread-sensing element is transferred to the lifting position. Now the zero point adjustment can be carried out. Becomes If the drive device is deactivated, the thread take-up means arrives in its second position, in which the thread abuts the thread sensing element. Preferably that is Thread take-up means in this position from the thread separated, i.e. does not touch it. This will Measurement error due to friction of the thread on the thread take-up means eliminated.
- Drive electrical or pneumatic rotary, swivel or Linear drive
- the thread take-up device deliberately for thread guidance use.
- the thread is either with the thread take-up means or with the thread sensing element engaged.
- the Thread always in contact with the thread take-up device, regardless of whether it is lifted off the thread sensing element is or not.
- the thread take-up means is by, preferably two thread sensors adjacent to the thread sensing element educated. In the simplest case, these are pens that to the preferably also pin-shaped Extend the thread sensing element in parallel. It can eyelets can also be used. Both the pin of the thread sensing element as well as the pins of the thread take-up means extend transversely to the thread running direction, preferably at right angles to this. This ensures that even with relatively wide pens all thread positions are equal on the pen, so that the thread does not saw in a preferred location.
- the thread sensing element of the thread tension sensor is preferably mounted on a spring parallelogram.
- the preferably pin-shaped thread sensing element is then in arranged at right angles to the spiral springs. Thereby one-sided clamping and storage of the Thread sensing element and it is a good measurement accuracy ensured.
- the measuring device preferably has two displacement sensors on whose output signals change when deflected of the thread sensing element preferably in opposite directions to change. This enables offset suppression in the Evaluation circuit.
- This is preferably a differential generator circuit, through a bridge circuit or an operational amplifier or other equivalent Means can be formed.
- the thread tension sensor according to the invention and the Thread delivery device according to the invention are for example to use a flat knitting machine, said Calibration or zero point adjustment process, for example when the thread guide changes direction or changes thread can be carried out.
- the thread guide moves For example, running away from the thread delivery device and stops at the end of its movement stroke to reverse the required thread delivery quantity, regardless of the respective Knitting pattern, briefly zero.
- a separate one Calibration circuit can detect this and the drive device activate briefly so that the thread of that Thread sensing element is lifted off and the adjusting one Measured value can be recorded as the zero point. Once this is done the calibration circuit deactivates the drive device, so that the thread is back on the thread sensing element is launched.
- the entire process can, if appropriate Design of the thread tension sensor and the drive device for the thread take-up means in some to be finished for a few 10 ms. The one when reversing direction the downtime of the thread guide is therefore sufficient to perform the calibration.
- a thread delivery device 1 is illustrated, whose housing 2 is a substantially flat one Front 3 has. There is a thread delivery wheel on this 4 and a thread tension sensor 5 are arranged.
- the housing 2 of the yarn delivery device which is not shown with Means for attachment to a knitting machine, in particular a flat knitting machine, has an eyelet 6 for guidance in addition to the thread delivery wheel 4 one illustrated only by a section Thread 7 on.
- the eyelet 6 is made with an insert 8 Ceramic provided and with respect to an arrow 9 illustrated thread running direction in front of the thread feed wheel 4 arranged.
- a signal lamp 11 further eyelet 12 arranged with a ceramic insert 13.
- a controls arranged in the housing 4 controls accordingly based on one of the thread tension sensor delivered signal one to drive the thread delivery wheel 4 serving engine.
- the thread feed wheel 4 is preferably six or multi-winged and has several of one Hub 14 radially extending spokes 15, 16 on connected to each other at the ends by a web 17 are. One pair of spokes and one web 17 each define a wing 18. The wings 18 are uniform Angular distances arranged.
- the thread delivery wheel 4 therefore defines a polygonal outer circumference on which the thread 7 rests as a regular hexagon.
- the thread tension sensor follows the thread feed wheel 4 5, the one serving as a thread sensing element 21 has. This extends across the thread 7, which is at an obtuse angle over the outer circumferential surface of the cylindrical pin 21 runs.
- the thread is drawn off at a larger angle. This causes an exact detachment of the thread from the thread delivery wheel or other of the thread delivery wheel recorded thread turns.
- the thread 7 runs at an acute angle to an imaginary Level 24 from (Fig.2), for which the axis of rotation 22 Establishes normal direction. This is done through appropriate Positioning of the eyelet 12 reached.
- the thread tension sensor 5 is in particular based on 3 to 5 to understand.
- the pin 21 is at the end mounted on a low-mass carrier 27 by two Kind of a spring parallelogram arranged leaf springs 28, 29 are held movably essentially in the longitudinal direction is.
- the carrier 27 projects with cylindrical ones Sections in damper pots or tubes 31, 32 that contain a more or less viscous liquid. Suppression, in particular, becomes more high-frequency Signal components reached, for example, due to the polygonal Outline of the yarn feed wheel 4 can occur.
- the bending springs 28, 29 are at the ends of corresponding Recordings 33, 34 taken on a base 35 are attached.
- a base 35 is, as is apparent from Fig. 4, for example.
- a permanent magnet 37 is arranged on the carrier 27, whose magnetic field two in the immediate vicinity arranged Hall sensors 38, 39 reached and influenced. A slight relocation of the wearer 27 with respect to the base 35 is from the Hall sensors 38, 39 recorded.
- a calibration device belongs to the thread tension sensor 5 40 with two serving as thread take-up means 41 Pins 42, 43 that are substantially parallel to each other the pin 21 are arranged.
- the pins 42, 43 are on a support frame 44 held with the pins 42, 43 movable across the pin 21 in the direction of arrow 45 is (Fig. 3, 4 and 5).
- the thread take-up means 41 is thereby in at least two different positions transferable. In a first position, which is shown in FIG is shown in broken lines, there are the pins 42, 43 in a position in which it takes the thread 7 from the pin 21 take off. In this position none of the thread 7 act outgoing forces on pin 21.
- the thread take-up means 41 has a drive device 46 connected.
- the pins 42, 43 of a frame 47 is held which has a solenoid drive 48 embraces.
- Its magnetic coil 49 has one with the Frame 47 connected tie rod 51.
- the frame 47 is by means of corresponding guide means 52, for example in one Base plate 53 provided elongated holes 54 or the tie rod 51 can be moved in the direction of adjustment (arrow 45) stored.
- the Spring means 56 is preferably a leaf spring 57 which held at one end on the base plate 53 and with connected at its opposite end to the frame 47 is.
- the only schematically indicated in Fig. 5 Hall sensors 38, 39 are on, as illustrated in FIG. 9 a measuring circuit 61 connected to outputs 62, 63 of the Hall sensors 38, 39 pending output signals processed.
- the Hall sensors 38, 39 are arranged that they send opposite signals. If the carrier 27 deflected in one direction, for example, increases the signal from the Hall sensor 38 while the of the Hall sensor 39 reduced.
- the measuring circuit 61 is a difference generator circuit trained and contains an operational amplifier 65. This works as a differential amplifier. The voltage gains are at the non-inverting and the inverting input among each other in terms of amount same, but different in sign. this will ensured by appropriate wiring.
- TP1 and TP2 are connected upstream in low passes, to suppress higher frequency components of the sensor signals. So there is a time at the exit averaged and amplified value of the difference of the output signals of the Hall sensors 38, 39.
- a change in the installation position of the thread delivery device 1, deposits on the pin 21 and the brackets of the Magnet 37 or changes in temperature or drift of Hall sensors 38, 39 and temperature or Aging drift on the measuring circuit 61 can gradually to a change in the output signal at the output of the Lead measuring circuit 61.
- the thread delivery device 1 with an automatic calibration or zero point adjustment circuit Mistake. This is with the solenoid 49 connected.
- the thread delivery device 1 performs its adjustment as follows through:
- the thread delivery device 1 is turned off, its electronic Circuit is active, however. It is in one Wait mode. To start up the knitting machine among other things the thread delivery device 1 is also activated.
- the calibration circuit briefly controls the solenoid 41, which attracts the armature 51. With that the Frame 47 pushed so far towards pin 21, that the pins 42, 43 pass the pin 21 and lift the thread 7 from the pin 21. The pin 21 is now free of thread forces and that of the measuring circuit 61 signal given in this state marks the Zero point, i.e. the thread tension is zero.
- control loop controls the motor so that the thread delivery wheel 4 the necessary to keep the thread tension constant Thread quantity delivers.
- Avoiding errors as a result of commissioning of the yarn feeder 1 occurring zero drifts can be effected by the described Calibration process is carried out frequently recurring. This is particularly possible in time windows in which the thread delivery wheel during the operation of the thread delivery device 1 4 and thus the thread 7 comes to a standstill. This state is, for example, by a corresponding one Controller output signal marked (motor control voltage equals zero). To capture such time windows the calibration circuit monitors the controller output signal. If there is such a time window, it will only a few or a few tens of milliseconds Calibration process triggered, i.e. the solenoid 49 will briefly excited and the zeroing of the measuring circuit 61 performed by the adjusting output signal is taken as the zero value.
- the process according to the flow diagram according to FIG. 10 first waits for a preset interval time t to be compared. passes.
- the time t equ. is the time interval in which a zero adjustment is to be carried out. It is between a few minutes and an hour.
- the controller output signal is first checked to see if it goes to zero. Then it is checked whether it remains at zero for a given time, for example 20 ms. If this is the case, there is a time window and it is expected that the Fourni's motor has been consciously stopped and will remain stopped for a longer time (500 ms).
- the adjustment can be carried out during such a time window.
- the detection of the time window is preferably edge-triggered.
- Thread delivery device 1 has a thread tension sensor 5 on, which is provided with a calibration device 40. This lifts the thread 7 at times from one to the other Thread tension sensor 5 belonging to pin 21, in which this without affecting the operation of the thread delivery device 1 is possible. These are preferably time windows in which no thread delivery is required. Is the Thread 7 is lifted from the pin 21, a zero point adjustment carried out, with zero drift of the whole Sensor system including its measuring circuit 61st can be recorded and compensated.
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- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Knitting Machines (AREA)
- Tension Adjustment In Filamentary Materials (AREA)
- Filamentary Materials, Packages, And Safety Devices Therefor (AREA)
- Force Measurement Appropriate To Specific Purposes (AREA)
- Spinning Or Twisting Of Yarns (AREA)
Abstract
Description
- Fig. 1
- ein Fadenliefergerät mit einem Fadenspannungssensor mit abgenommener Sensorabdeckung in einer perspektivischen Gesamtansicht,
- Fig. 2
- das Fadenliefergerät nach Fig. 1 in einer schematisierten Seitenansicht,
- Fig. 3
- den Fadenspannungssensor des Fadenliefergerätes nach Fig. 1 und 2 in einer vereinfachten Perspektivdarstellung und in einem anderen Maßstab,
- Fig. 4
- den Fadenspannungssensor nach Fig. 3 in einer Draufsicht,
- Fig. 5
- den Fadenspannungssensor nach Fig. 4 in einer schematisierten Prinzipdarstellung zur Veranschaulichung seines Funktionsprinzips,
- Fig. 6
- den Fadenspannungssensor nach Fig. 4 geschnitten entlang der Linie VI-VI,
- Fig. 7
- den Fadenspannungssensor nach Fig. 4 in einer schematisierten Vorderansicht,
- Fig. 8
- den Fadenspannungssensor nach Fig. 4 in einer Seitenansicht,
- Fig. 9
- eine elektrische Schaltung zur Signalverarbeitung der Ausgangssignale zweier als Wegaufnehmer dienender Hallsensoren und
- Fig. 10
- einen Ablaufplan zur Veranschaulichung des Verfahrens bei dem Nullabgleich des Fadenspannungssensors.
Claims (26)
- Fadenspannungssensor (1) zur Erfassung der Spannung eines laufenden Fadens (7), insbesondere für Fournisseure zur Lieferung elastischer Fäden insbesondere für Strickmaschinen,mit einem Fadenfühlelement (21), das in einem Fadenlaufweg angeordnet ist und das eine Anlagefläche für den Faden (7) aufweist,mit einer mit dem Fadenfühlelement (21) verbundenen Messeinrichtung (5) zur Erfassung der von dem Faden (7) auf das Fadenfühlelement (21) ausgeübten Kraft,mit einem Fadenaufnahmemittel (41), wenigstens mit dem Faden in Anlage überführbar oder mit dem Faden in Daueranlage befindlich ist,mit einer Aktuatoreinrichtung (48), mittels derer das Fadenfühlelement (21) und das Fadenaufnahmemittel (41) relativ zueinander zwischen einer Kalibrierposition und einer Meßposition derart bewegbar sind, dass der Faden in der Kalibrierposition an dem Fadenfühlelement (21) nicht anliegt und dass der Faden in der Meßposition an dem Fadenfühlelement (21) anliegt.
- Fadenspannungssensor nach Anspruch 1, dadurch gekennzeichnet, dass die von der Aktuatoreinrichtung (48) festgelegte Bewegungsrichtung quer zu dem Faden festgelegt ist.
- Fadenspannungssensor nach Anspruch 1, dadurch gekennzeichnet, dass das Fadenaufnahmemittel (41) und das Fadenfühlelement (21) auf einer festgelegten gleichen Seite des Fadens angeordnet sind und dass das Fadenaufnahmeelement (41) in der Kalibrierposition den Faden von dem Fadenfühlelement (21) abhebt und in der Meßposition vorzugsweise nicht an dem Faden anliegt, wobei der Faden an dem Fadenfühlelement (21) anliegt.
- Fadenspannungssensor nach Anspruch 1, dadurch gekennzeichnet, dass das Fadenaufnahmemittel (41) und das Fadenfühlelement (21) auf festgelegten gegenüberliegenden Seiten des Fadens angeordnet sind und dass das Fadenaufnahmeelement (41) in der Kalibrierposition den Faden von dem Fadenfühlelement (21) abheben lässt und in der Meßposition vorzugsweise an dem Faden anliegend diesen in Anlage mit dem Fadenfühlelement (21) hält.
- Fadenspannungssensor nach Anspruch 1, dadurch gekennzeichnet, dass die Aktuatoreinrichtung (48) mit dem Fadenaufnahmeelement (41) verbunden ist, um dieses aus der Kalibrierposition in die Meßposition und zurück zu bewegen, und dass das Fadenfühlelement (21) im wesentlichen, d.h. bis auf seinen Meßweg ortsfest angeordnet ist.
- Fadenspannungssensor nach Anspruch 1, dadurch gekennzeichnet, dass die Aktuatoreinrichtung (48) mit der Messeinrichtung (5) verbunden ist, um diese gemeinsam mit dem Fadenfühlelement (21) aus der Kalibrierposition in die Meßposition und zurück zu bewegen, und dass das Fadenaufnahmeelement (41) ortsfest angeordnet ist.
- Fadenspannungssensor nach Anspruch 5 oder 6, dadurch gekennzeichnet, dass die Aktuatoreinrichtung (48), ein elektrischer Linearantrieb (49, 51, 56) ist.
- Fadenspannungssensor nach Anspruch 1, dadurch gekennzeichnet, dass das Fadenaufnahmemittel (41) durch wenigstens einen, vorzugsweise zwei Fadenaufnehmer (42, 43) gebildet ist, die dem Fadenfühlelement (21) benachbart angeordnet sind.
- Fadenspannungssensor nach Anspruch 1, dadurch gekennzeichnet, dass das Fadenfühlelement (21) in Wesentlichen quer zu dem Fadenlaufweg beweglich und vorzugsweise federnd gelagert ist, wobei die Meßeinrichtung (5) eine Wegaufnehmereinrichtung (38, 39) enthält.
- Fadenspannungssensor nach Anspruch 1, dadurch gekennzeichnet, dass das Fadenfühlelement (21) mittels eines Federparallelogramms (28, 29) an einem Sockel (35) gelagert ist, der außerdem die Wegaufnehmereinrichtung (38, 39) trägt und der gefedert und/oder gedämpft gelagert (36) ist.
- Fadenspannungssensor nach Anspruch 9, dadurch gekennzeichnet, dass die Wegaufnehmereinrichtung (38, 39) zwei Wegaufnehmer aufweist, die an eine Meßschaltung (61) angeschlossen sind, die vorzugsweise einen Differenzbildner (65) enthält, an dessen Eingänge (+, -) die Wegaufnehmer der Meßeinrichtung (5) angeschlossen sind.
- Fadenspannungssensor nach Anspruch 1, dadurch gekennzeichnet, dass das Fadenfühlelement (21) ein quer zur Bewegungsrichtung des Fadens (7) angeordneter, vorzugsweise aus Keramik ausgebildeter Stift ist, wobei der Faden (7) bezüglich der Längsrichtung des Stifts ungeführt ist.
- Fadenspannungssensor nach Anspruch 1, dadurch gekennzeichnet, dass das Fadenaufnahmemittel (41) zu einer Kalibriereinrichtung (40) gehört, die zur Einstellung eines Bezugswertes der Meßeinrichtung (5) vorgesehen ist.
- Fadenspannungssensor nach Anspruch 13, dadurch gekennzeichnet, dass die Kalibriereinrichtung (40) von einem von der Maschine abgegebenen Signal aktivierbar ist, das einen Zustand kennzeichnet, bei dem der Faden (7) eine Geschwindigkeit aufweist, die geringer als ein vorgegebener Grenzwert ist.
- Fadenspannungssensor nach Anspruch 14, dadurch gekennzeichnet, dass der Grenzwert die Fadengeschwindigkeit Null ist.
- Fadenspannungssensor nach Anspruch 1, dadurch gekennzeichnet, dass an die Meßeinrichtung (61) eine Regeleinrichtung zur Konstanthaltung der Fadenspannung angeschlossen ist und dass die Regeleinrichtung einen Inaktivierungseingang aufweist, wobei die Regeleinrichtung ihr Ausgangssignal nicht ändert, wenn an dem Inaktivierungseingang ein entsprechendes Signal angekommen ist.
- Fadenliefergerät, insbesondere für elastische Fäden, insbesondere für Strickmaschinen mit stark schwankendem Fadenverbrauch, wie Flachstrickmaschinen,mit einem von einem Elektromotor angetriebenen Fadenlieferrad (4),mit einer Regeleinrichtung zur Ansteuerung des Elektromotors (4) derart, dass die erforderliche Fadenmenge geliefert und die Fadenspannung dabei innerhalb vorgegebener Grenzen gehalten wird,mit einem Fadenspannungssensor (5) nach einem der vorhergehenden Ansprüche undmit einer durch einen Kalibrierimpuls aktivierbaren Kalibriereinrichtung (40) für den Fadenspannungssensor (5), durch die das Fadenaufnahmemittel (21) und der Fadenspannungssensor in Bezug aufeinander zur Kalibrierung des Fadenspannungssensors (5) in Kalibrierposition überführbar sind.
- Fadenliefergerät nach Anspruch 17, dadurch gekennzeichnet, dass das Fadenlieferrad (4) eine Drehachse (22) aufweist, die in Normalenrichtung zu einer Ebene (24) angeordnet ist, mit der der ablaufende Faden (7) einen spitzen Winkel einschließt.
- Fadenliefergerät nach Anspruch 18, dadurch gekennzeichnet, dass die Kalibriereinrichtung (40) von der Fadengeschwindigkeit gesteuert ist.
- Fadenliefergerät nach Anspruch 19, dadurch gekennzeichnet, dass die Kalibriereinrichtung (40) wenigstens dann inaktiv ist, wenn die Fadengeschwindigkeit einen Grenzwert überschreitet.
- Fadenliefergerät nach Anspruch 18, dadurch gekennzeichnet, dass die Kalibriereinrichtung (40) bei Richtungsumkehr des Fadenführers einer Flachstrickmaschine oder bei Fadenwechsel bei Strumpf- und Sockenmaschinen oder bei sonstigen Fadenverbrauchspausen von Maschinen aktivierbar ist.
- Verfahren zur Kalibrierung eines Fadenspannungssensors, insbesondere zum Nullabgleich des Fadenspannungssensors, mit den folgenden Schritten:Erfassen eines Signals, das einen Zustand kennzeichnet, bei dem die Fadenspannung kurzzeitig von ihrem Sollwert abweichen darf,Trennen des Faden von dem Fadenspannungssensor,Erfassen des bei abgehobenen Faden von dem Fadenspannungssensor abgegebenen Signals,Wiederanlegen des Fadens an den Fadenspannungssensor.
- Verfahren nach Anspruch 22, dadurch gekennzeichnet, dass das Signal eine Fadengeschwindigkeit kennzeichnet, die kleiner als ein vorgegebener Grenzwert ist.
- Verfahren nach Anspruch 22, dadurch gekennzeichnet, dass der bei abgehobenem Faden erfasste Meßwert als Nullwert genommen wird.
- Verfahren nach Anspruch 22, dadurch gekennzeichnet, dass der Kalibriervorgang bei einer Flachstrickmaschine bei der Bewegungsumkehr und/oder dem Start durchgeführt wird.
- Verfahren nach Anspruch 22, dadurch gekennzeichnet, dass der Kalibriervorgang bei sich bewegendem Faden in einem Zeitfenster durchgeführt wird, in dem die Fadengeschwindigkeit konstant ist.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19811241A DE19811241A1 (de) | 1998-03-14 | 1998-03-14 | Fadenspannungssensor mit wiederholtem Abgleich |
| DE19811241 | 1998-03-14 |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| EP0943713A2 true EP0943713A2 (de) | 1999-09-22 |
| EP0943713A3 EP0943713A3 (de) | 2000-05-03 |
| EP0943713B1 EP0943713B1 (de) | 2006-11-22 |
Family
ID=7860991
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP99104418A Expired - Lifetime EP0943713B1 (de) | 1998-03-14 | 1999-03-05 | Fadenspannungssensor mit wiederholtem Abgleich |
Country Status (17)
| Country | Link |
|---|---|
| US (1) | US6105895A (de) |
| EP (1) | EP0943713B1 (de) |
| JP (1) | JP3113241B2 (de) |
| KR (1) | KR100292421B1 (de) |
| CN (1) | CN1182376C (de) |
| BR (1) | BR9901005B1 (de) |
| CA (1) | CA2265383A1 (de) |
| CO (1) | CO4810244A1 (de) |
| CZ (1) | CZ299690B6 (de) |
| DE (2) | DE19811241A1 (de) |
| ID (1) | ID22192A (de) |
| IL (1) | IL128883A (de) |
| RU (1) | RU2154128C1 (de) |
| TR (1) | TR199900566A2 (de) |
| TW (1) | TW436542B (de) |
| UA (1) | UA49911C2 (de) |
| UY (1) | UY25425A1 (de) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2797857A1 (fr) * | 1999-08-25 | 2001-03-02 | Schlafhorst & Co W | Dispositif d'equilibrage d'un capteur de forces de traction imposees a un fil |
| WO2003085183A1 (en) * | 2002-04-10 | 2003-10-16 | Tiziano Barea | Device and method for feeding an elastomeric yarn to a textile machine |
| WO2009052846A1 (de) * | 2007-10-24 | 2009-04-30 | Memminger-Iro Gmbh | Fadenliefergerät mit adaptivem regler |
| EP2573026A4 (de) * | 2010-05-21 | 2013-10-30 | Shima Seiki Mfg | Fadenzufuhrsystem |
| EP3967801A1 (de) * | 2020-09-11 | 2022-03-16 | Picanol | Vorrichtung und verfahren zum abtasten einer fadenspannung und verfahren zur montage einer sensoreinheit |
| IT202300004974A1 (it) * | 2023-03-16 | 2024-09-16 | Lgl Electronics Spa | Unità di rilevamento della tensione per un gruppo di filati coinvolti in un processo tessile, e apparato di alimentazione di filato comprendente la stessa. |
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|---|---|---|---|---|
| IT1303022B1 (it) * | 1998-04-17 | 2000-10-20 | Btsr Int Spa | Dispositivo di controllo dell'alimentazione del filato ad una macchinatessile e metodo di controllo del funzionamento e produzione di |
| KR100307913B1 (ko) * | 1999-07-24 | 2001-09-24 | 차영진 | 환편기의 스판얀 장력조절장치 |
| DE10333202A1 (de) * | 2003-07-22 | 2005-03-03 | Hottinger Baldwin Messtechnik Gmbh | Gehäuse für einen Fadenspannungsaufnehmer |
| RU2375294C2 (ru) * | 2006-05-15 | 2009-12-10 | Общество с ограниченной ответственностью "Биалекс" | Автоматизированная система исследования химических волокон |
| CN101706337A (zh) * | 2009-09-23 | 2010-05-12 | 上海贵宝机电有限公司 | 丝、纱、线微张力在线检测装置 |
| ITMI20100887A1 (it) * | 2010-05-18 | 2011-11-19 | Btsr Int Spa | Metodo e dispositivo perfezionato per alimentare un filo ad una macchina operatrice con tensione e velocita' costante |
| DE102012111784B3 (de) * | 2012-12-04 | 2014-03-27 | Memminger-Iro Gmbh | Fadenliefergerät |
| CN102965827A (zh) * | 2012-12-13 | 2013-03-13 | 慈溪太阳洲纺织科技有限公司 | 针织机上的纱线张力检测装置 |
| CN103015021B (zh) * | 2012-12-31 | 2015-01-21 | 加宝利服装有限公司 | 一种织物织造工艺、织造设备和系统 |
| DE102013009452A1 (de) | 2013-06-06 | 2014-12-11 | Saurer Germany Gmbh & Co. Kg | Nullpunktabgleich eines Fadenzugkraftsensors |
| ITMI20130948A1 (it) * | 2013-06-10 | 2014-12-11 | Btsr Int Spa | Dispositivo di recupero di filati e sistema di alimentazione di filati comprendente detto dispositivo |
| CN103668769B (zh) * | 2013-12-26 | 2015-04-29 | 宁波裕人数控科技有限公司 | 一种用于圆型针织机的测纱装置 |
| WO2015188883A1 (en) | 2014-06-13 | 2015-12-17 | Memminger-Iro Gmbh | Method to control feeding a yarn and yarn feeder |
| TWI586447B (zh) * | 2014-09-25 | 2017-06-11 | China Steel Corp | Thin metal belt tension measuring device |
| WO2016091286A1 (en) | 2014-12-09 | 2016-06-16 | Memminger-Iro Gmbh | Method and device for monitoring a knitting machine |
| CN104828645B (zh) * | 2015-03-23 | 2018-01-26 | 华东理工大学 | 纱线超喂张力控制装置及其测试方法、及张力控制系统 |
| DE102015120264B3 (de) * | 2015-11-23 | 2016-12-29 | Memminger-Iro Gmbh | Verfahren zur Steuerung der Fadenlieferung mindestens eines Fadenliefergerätes und Textilmaschine mit einem System mit mindestens einem Fadenliefergerät |
| CN105784244B (zh) * | 2016-05-06 | 2018-09-25 | 浙江工业职业技术学院 | 一种电磁感应式丝线张力测量装置 |
| ITUA20164460A1 (it) * | 2016-06-17 | 2017-12-17 | Lgl Electronics Spa | Alimentatore di filato con rocchetto avvolgi-filo motorizzato |
| TWI620703B (zh) * | 2016-07-25 | 2018-04-11 | 財團法人工業技術研究院 | 具有壓力感測器的滾輪及捲對捲裝置 |
| CN106835479B (zh) * | 2017-01-21 | 2018-10-12 | 慈溪市赛美格针织器材有限公司 | 一种输纱器的张力器 |
| US10329116B2 (en) * | 2017-07-31 | 2019-06-25 | Sunshine Kinetics Technology Co. Ltd. | Sensing apparatus for yarn feeder |
| CN108382925B (zh) * | 2018-01-23 | 2019-10-25 | 武汉长盈通光电技术有限公司 | 光纤张力调节装置 |
| IT201800002452A1 (it) * | 2018-02-06 | 2019-08-06 | Btsr Int Spa | Metodo, sistema alimentatore di filo perfezionato e dispositivo per ottimizzare l'alimentazione di filo ad una macchina tessile operante con elevata discontinuita' o con un moto alternato |
| CN109655179A (zh) * | 2018-12-06 | 2019-04-19 | 东南大学 | 带温度补偿和光纤输出的三维力传感器测量电路及方法 |
| CN109629107B (zh) * | 2019-01-04 | 2024-10-11 | 杭州兆图科技有限公司 | 一种纱线检测方法和针织机 |
| CN110257973A (zh) * | 2019-06-28 | 2019-09-20 | 台嘉玻璃纤维有限公司 | 一种纱架单锭张力自动侦测装置及系统 |
| CN113005632A (zh) | 2019-12-19 | 2021-06-22 | 财团法人工业技术研究院 | 线材张力控制装置及应用其之编织机 |
| TWI772991B (zh) | 2020-12-02 | 2022-08-01 | 財團法人工業技術研究院 | 編織路徑生成方法與裝置以及動態修正方法與編織系統 |
| TWI808004B (zh) * | 2022-09-22 | 2023-07-01 | 紹凱動能科技股份有限公司 | 紗線連動裝置 |
| CN119555498A (zh) * | 2024-12-04 | 2025-03-04 | 山东大和纺织科技股份有限公司 | 一种纺织纱线张力测试装置 |
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| US3578795A (en) * | 1968-07-12 | 1971-05-18 | Utita Officine E Fonderie Di E | Cop winder with controlled yarn tension |
| US3807612A (en) * | 1973-05-15 | 1974-04-30 | Fmc Corp | Web feeding apparatus for blank making machine |
| US3858416A (en) * | 1973-07-23 | 1975-01-07 | Eugene F White | Knitting machine yarn feeding apparatus |
| JPS6023065B2 (ja) * | 1978-02-16 | 1985-06-05 | 東レ株式会社 | 糸条巻取装置 |
| US4347993A (en) * | 1979-11-06 | 1982-09-07 | W. J. Industries, Incorporated | Tension monitor means and system |
| NL8301497A (nl) * | 1983-04-28 | 1984-11-16 | Hoogovens Groep Bv | Haspelsysteem. |
| SU1240803A1 (ru) * | 1984-02-20 | 1986-06-30 | Всесоюзный научно-исследовательский институт трикотажной промышленности | Устройство дл подачи эластомерной нити к текстильной машине |
| DE3729297C1 (de) * | 1987-09-02 | 1989-03-02 | Gustav Memminger | Vorrichtung zur UEberwachung der Fadenlieferung bei einer Fadenliefervorrichtung fuer Textilmaschinen |
| US5017911A (en) * | 1989-07-06 | 1991-05-21 | Barmag Ag | Method and apparatus for measuring the tension of an advancing yarn |
| DE3942341A1 (de) * | 1989-12-21 | 1991-06-27 | Bosch Waagen Gmbh | Kraftsensor, insbesondere zum ueberwachen der spannung laufender textilfaeden |
| DE19537215C2 (de) * | 1995-10-06 | 1999-09-02 | Memminger Iro Gmbh | Fadenliefergerät für elastische Garne |
| SE517299C2 (sv) * | 1995-10-06 | 2002-05-21 | Eltex Sweden Ab | Anordning för generering av en elektrisk signal i motsvarighet till anspänning och/eller rörelse av en tråd. |
| DE19635478A1 (de) * | 1996-08-31 | 1998-03-05 | Loh Kg Hailo Werk | Wäscheständer |
-
1998
- 1998-03-14 DE DE19811241A patent/DE19811241A1/de not_active Withdrawn
-
1999
- 1999-03-05 DE DE59913989T patent/DE59913989D1/de not_active Expired - Lifetime
- 1999-03-05 EP EP99104418A patent/EP0943713B1/de not_active Expired - Lifetime
- 1999-03-08 IL IL12888399A patent/IL128883A/en not_active IP Right Cessation
- 1999-03-08 JP JP11059864A patent/JP3113241B2/ja not_active Expired - Fee Related
- 1999-03-10 ID IDP990200D patent/ID22192A/id unknown
- 1999-03-11 UY UY25425A patent/UY25425A1/es not_active Application Discontinuation
- 1999-03-11 UA UA99031331A patent/UA49911C2/uk unknown
- 1999-03-12 TW TW088103996A patent/TW436542B/zh not_active IP Right Cessation
- 1999-03-12 CA CA002265383A patent/CA2265383A1/en not_active Abandoned
- 1999-03-12 TR TR1999/00566A patent/TR199900566A2/xx unknown
- 1999-03-12 CZ CZ0087099A patent/CZ299690B6/cs not_active IP Right Cessation
- 1999-03-12 CO CO99015396A patent/CO4810244A1/es unknown
- 1999-03-12 BR BRPI9901005-4A patent/BR9901005B1/pt not_active IP Right Cessation
- 1999-03-12 KR KR1019990008226A patent/KR100292421B1/ko not_active Expired - Fee Related
- 1999-03-12 CN CNB99103984XA patent/CN1182376C/zh not_active Expired - Lifetime
- 1999-03-12 RU RU99105561/12A patent/RU2154128C1/ru not_active IP Right Cessation
- 1999-03-15 US US09/268,854 patent/US6105895A/en not_active Expired - Fee Related
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2797857A1 (fr) * | 1999-08-25 | 2001-03-02 | Schlafhorst & Co W | Dispositif d'equilibrage d'un capteur de forces de traction imposees a un fil |
| WO2003085183A1 (en) * | 2002-04-10 | 2003-10-16 | Tiziano Barea | Device and method for feeding an elastomeric yarn to a textile machine |
| WO2009052846A1 (de) * | 2007-10-24 | 2009-04-30 | Memminger-Iro Gmbh | Fadenliefergerät mit adaptivem regler |
| CN101849056B (zh) * | 2007-10-24 | 2012-06-13 | 梅明格-Iro股份有限公司 | 用于将纱线提供给用纱位置的喂纱装置 |
| TWI427202B (zh) * | 2007-10-24 | 2014-02-21 | Memminger Iro Gmbh | 具有適應控制器之紗線傳送裝置 |
| EP2573026A4 (de) * | 2010-05-21 | 2013-10-30 | Shima Seiki Mfg | Fadenzufuhrsystem |
| EP3967801A1 (de) * | 2020-09-11 | 2022-03-16 | Picanol | Vorrichtung und verfahren zum abtasten einer fadenspannung und verfahren zur montage einer sensoreinheit |
| WO2022053321A1 (en) * | 2020-09-11 | 2022-03-17 | Picanol | Device and method for sensing a tension in a thread, and method for mounting a sensor unit |
| BE1028558B1 (nl) * | 2020-09-11 | 2022-07-11 | Picanol Nv | Inrichting en werkwijze voor het detecteren van een spanning in een draad en werkwijze voor het monteren van een sensoreenheid |
| IT202300004974A1 (it) * | 2023-03-16 | 2024-09-16 | Lgl Electronics Spa | Unità di rilevamento della tensione per un gruppo di filati coinvolti in un processo tessile, e apparato di alimentazione di filato comprendente la stessa. |
| EP4431428A1 (de) * | 2023-03-16 | 2024-09-18 | L.G.L. Electronics S.p.A. | Spannungserfassungseinheit für eine anordnung von garnen, die an einem textilverfahren beteiligt sind, und garnzufuhrvorrichtung mit der einheit |
Also Published As
| Publication number | Publication date |
|---|---|
| RU2154128C1 (ru) | 2000-08-10 |
| UY25425A1 (es) | 1999-07-19 |
| EP0943713A3 (de) | 2000-05-03 |
| US6105895A (en) | 2000-08-22 |
| ID22192A (id) | 1999-09-16 |
| BR9901005B1 (pt) | 2008-11-18 |
| TR199900566A3 (tr) | 1999-10-21 |
| UA49911C2 (uk) | 2002-10-15 |
| TR199900566A2 (xx) | 1999-10-21 |
| EP0943713B1 (de) | 2006-11-22 |
| CZ299690B6 (cs) | 2008-10-22 |
| IL128883A0 (en) | 2000-01-31 |
| DE19811241A1 (de) | 1999-09-30 |
| CN1182376C (zh) | 2004-12-29 |
| CN1238450A (zh) | 1999-12-15 |
| CA2265383A1 (en) | 1999-09-14 |
| IL128883A (en) | 2002-11-10 |
| HK1024298A1 (en) | 2000-10-05 |
| JP3113241B2 (ja) | 2000-11-27 |
| DE59913989D1 (de) | 2007-01-04 |
| KR100292421B1 (ko) | 2001-06-01 |
| BR9901005A (pt) | 2000-03-08 |
| TW436542B (en) | 2001-05-28 |
| CZ87099A3 (cs) | 1999-09-15 |
| KR19990077812A (ko) | 1999-10-25 |
| CO4810244A1 (es) | 1999-06-30 |
| JPH11286855A (ja) | 1999-10-19 |
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