EP0658507B1 - Verfahren zum Ermitteln eines Fadenvorrats in einer Fadenspeicher- und -liefervorrichtung, und Fadenspeicher- und -liefervorrichtung - Google Patents

Verfahren zum Ermitteln eines Fadenvorrats in einer Fadenspeicher- und -liefervorrichtung, und Fadenspeicher- und -liefervorrichtung Download PDF

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Publication number
EP0658507B1
EP0658507B1 EP94117383A EP94117383A EP0658507B1 EP 0658507 B1 EP0658507 B1 EP 0658507B1 EP 94117383 A EP94117383 A EP 94117383A EP 94117383 A EP94117383 A EP 94117383A EP 0658507 B1 EP0658507 B1 EP 0658507B1
Authority
EP
European Patent Office
Prior art keywords
thread
storage
scanning
sensors
feed device
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.)
Expired - Lifetime
Application number
EP94117383A
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German (de)
English (en)
French (fr)
Other versions
EP0658507A1 (de
Inventor
Rolf Huss
Lars Helge Gottfrid Tholander
Kurt Arne Gunnar Jacobsson
Friedrich Weber
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Memminger IRO GmbH
Iro AB
Original Assignee
Memminger IRO GmbH
Iro AB
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Memminger IRO GmbH, Iro AB filed Critical Memminger IRO GmbH
Publication of EP0658507A1 publication Critical patent/EP0658507A1/de
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H51/00—Forwarding filamentary material
    • B65H51/20—Devices for temporarily storing filamentary material during forwarding, e.g. for buffer storage
    • B65H51/22—Reels or cages, e.g. cylindrical, with storing and forwarding surfaces provided by rollers or bars
    • 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
    • D04B15/482—Thread-feeding devices comprising a rotatable or stationary intermediate storage drum from which the thread is axially and intermittently pulled off; Devices which can be switched between positive feed and intermittent feed
    • D04B15/486—Monitoring reserve quantity
    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
    • D03D47/00—Looms in which bulk supply of weft does not pass through shed, e.g. shuttleless looms, gripper shuttle looms, dummy shuttle looms
    • D03D47/34—Handling the weft between bulk storage and weft-inserting means
    • D03D47/36—Measuring and cutting the weft
    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
    • D03D47/00—Looms in which bulk supply of weft does not pass through shed, e.g. shuttleless looms, gripper shuttle looms, dummy shuttle looms
    • D03D47/34—Handling the weft between bulk storage and weft-inserting means
    • D03D47/36—Measuring and cutting the weft
    • D03D47/361—Drum-type weft feeding devices
    • D03D47/367—Monitoring yarn quantity on the drum
    • 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
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04B—KNITTING
    • D04B35/00—Details of, or auxiliary devices incorporated in, knitting machines, not otherwise provided for
    • D04B35/10—Indicating, warning, or safety devices, e.g. stop motions
    • D04B35/12—Indicating, warning, or safety devices, e.g. stop motions responsive to thread consumption

Definitions

  • the invention relates to a method according to the preamble of claim 1 and a thread storage and delivery device according to the preamble of claim 5.
  • a thread storage and storage device known from US-A-4 180 215 -Delivery device for knitting machines has a rotary drive Storage body with concave indented outline on.
  • the storage body has a translucent Wall and different peripheral sections, e.g. Longitudinal grooves or slits around small contact surfaces to define for the thread turns.
  • Internally of the memory body are a light-generating transmitter and a reflection light receiver arranged. Except for Storage area is a mirror that holds the light of the transmitter reflected in the scanning zone to the receiver, as long as there are no thread turns in the scanning zone. It becomes the transition taking place in the axial direction detected between reflection and shadowing to the Control the rotary drive of the storage body.
  • the Reflection or absorption behavior of the thread turns influences the discrimination of the sensor signals. Reflect white, shiny thread turns of a thread quality the light like the mirror; extremely thin thread turns another thread quality shadow reflection light however, too little. In such cases the signal difference between the sensor signals decreases, what an increase in responsiveness of the sensor, which influences the interference of extraneous light, Contamination or reduced light transmission reinforced the wall of the storage body.
  • Thread storage and delivery devices for knitting machines become movements of the limit of the thread supply determined with a probe that is a feed element (thanks to an inclination relative to the storage body axis) and a sensor (for operating a switch depending on the extent of the inclination).
  • a probe that is a feed element (thanks to an inclination relative to the storage body axis) and a sensor (for operating a switch depending on the extent of the inclination).
  • These mutually influencing functions and the mechanical are scanning, also because of the high thread speeds in modern thread processing machines, not up to date anymore.
  • These devices show in Operation a hysteresis leading to inaccurate operating behavior leads.
  • these devices sensitive to changes in thread feed tension.
  • the invention has for its object a simple and process which can be used universally for various types of thread storage and delivery devices and a structurally simple thread storage and delivery device to create with which to sense the movements the limit of the thread supply is not susceptible to faults and largely independent of the thread quality or the Properties of the thread material is possible.
  • the sensors determine precisely whether the limit of the thread supply has reached the scanning zone is or not. This statement is very reliable and insensitive to faults and independent of the processed Thread quality because thread turns in the scanning zone at no time unequal signals at the same time can cause. Significantly different from thread turns Scanning properties of the two storage area circumferential sections can be structurally easily predetermined, e.g. through constructive measures on the Storage space, through different materials, by different distances from the sensors, by auxiliary elements built into the storage area, through coloring, orders, finishing and the like It is important that the sensors are flat and not only scan point by point.
  • the scanning takes place opto-electronically and contactless. This is an optimally gentle treatment even sensitive thread material guaranteed.
  • a rotationally driven storage body from the rotary motion one to at least one Circumference point or a window signal related to a circumference area derived. It is scanned like a strobe, so that, if necessary, in terms of sampling or evaluation of critical transition areas between the Circumferential sections are disregarded.
  • the memory body should always stop like this that there is a window signal in each case.
  • the window signal or the distance between two window signals is, so to speak, as a trigger for scanning the thread supply used, the time period or range of rotation angle of the window signal is shorter than the time period or the range of rotation angles over which each peripheral portion would be entirely palpable.
  • the rotational position sensor can be on a thread-free area of the storage body or its drive shaft can be aligned.
  • the embodiment according to claim 6 is structurally simple and preferably for thread delivery to a knitting machine suitable.
  • the structural housing of the sensors shields them from outside light and enables their exact alignment and positioning.
  • the embodiment according to claim 8 has three sensors on, the circumferential distances are chosen so that always first and second storage area peripheral portions are detectable at the same time.
  • rotational position signals are used as window signals generated to determine when and about which Area each of the storage area circumferential sections be scanned. Furthermore, any rotational position signal can be for stopping the memory body precisely use, e.g. by braking the storage body by reversing the field direction with an asynchronous motor, or seek out the window signal in crawl. Finally, a statement about the speed of rotation, the acceleration or deceleration and the state: rotation or standstill, derive what for accompanying security functions can be important.
  • results from the distance determination the sensors are an almost sinusoidal one that can be evaluated favorably Waveform.
  • the scanning properties are strong different because the surfaces of the longitudinal bars like Mirrors act while the gaps or the Longitudinal grooves, e.g. with optoelectronic scanning with reflection light, nonexistent or almost nonexistent.
  • the mirrored or chrome-plated and polished surfaces of the longitudinal bars slight axial sliding of the thread turns. Furthermore lets a feed element can be easily integrated.
  • the control technology is simple Discrimination between the thread signals and the memory area signals made whose clearly to be detected Difference (signal voltage differences, signed or absolute) to produce more concise Control signals can be evaluated. Because the circuit is unequal Signals occur simultaneously, independently of which sensor is the one and which sensor the other unequal signal produces a definite one Statement on the absence of the thread supply limit in front. No simultaneous unequal signals occur in the Logic circuit on, then is a definitive statement for the presence of thread turns in the scanning zone available. It is also possible to make a statement about presence of thread in the scanning zone by discriminating between the same thread signals and the unequal Winning signals.
  • the circuit can be in a Microprocessor control or regulation for the rotary drive integrated or at least connected to it be in order to control or close the rotary drive sensitively regulate and include application-specific parameters.
  • the embodiment according to claim 14 with stationary Storage body is universal as a weft storage and -Delivery device can be used for weaving machines.
  • the Rod cage construction creates the required peripheral sections and allows the integration of a feed element.
  • the desired thread size can be to adjust.
  • the embodiment according to claim 17 is inexpensive, compact and reliable.
  • the peripheral sections are with different scanning properties as clearly as possible educated.
  • the embodiment according to claim 19 is not susceptible to interference.
  • the speed information used for security monitoring to identify faulty Avoid goods if, despite one, the willingness to work indicating working signal no thread supplied becomes.
  • Exceeds e.g. the thread tension on the inlet side the torque of the rotary drive
  • the rotary drive unable to drive the storage body and to provide enough thread in the thread supply.
  • the machine is then switched off.
  • a predetermined period of time from the occurrence of the working signal and the absence of the signal chain is necessary to avoid this normal start-up of the storage body from standstill or to ensure its acceleration, as in Normal operation can occur.
  • the speed information can also be used to overfill the thread supply switch off due to inoperable sensors.
  • the maximum speed of the Rotary drive monitored over a predetermined period of time, within which usually the limit of the thread supply get into the scanning zone and be detected can. If this does not happen, the time will be added from e.g. 50% off the machine at this time.
  • the storage body is at a determined ratio between the speed of rotation and the thread consumption rate, e.g. after the consumption rate drops rapidly to zero, the storage body to a standstill braked so that the pull-off point of the thread is no longer rotates. This would result in the thread running out an unwanted twist.
  • the brake prevents that inertia-related lag of the storage body.
  • a field reversal can be controlled electrically (electric motor brake).
  • a thread storage and delivery device F has a drum-shaped storage body 1 with a Storage area 2 for a thread supply 5 made of thread turns 6 of a thread Y on.
  • the storage body 1 is around an axis 3 can be driven to rotate (arrow 4) and can be stopped.
  • the thread Y becomes tangential to the storage body 1 fed and withdrawn axially (varying thread length delivery to a knitting machine).
  • the movement the lower limit of the thread supply 5 is with a scanning device 7 for presence or absence in a scan zone 12 (for simplicity as dash-dotted Line shown) scanned, e.g. to drive control signals for a rotary drive, not shown in Fig. 1 of the storage body 1 to generate the storage body roughly in line with the thread consumption drives.
  • the storage area 2 has at least two peripheral sections 8, 9 with different scanning properties A, B for two sensors SA, SB on which in arranged approximately in the circumferential direction and spaced apart in this way are that they are simultaneously on both circumferential sections 8, 9 can be aligned. It is about for example opto-electronic sensors SA, SB, each of which comes from a light source 10 (infrared light) and a receiver 11 responsive to reflection light (Photodiode) exists.
  • the different scanning properties A, B of the peripheral portions 8, 9 can be predetermined be through: high contrast different colors, different light reflection or absorption, different distances from the sensors and the like Use of opto-electronic sensors with sharp imaging the scanning zone 12 can have different patterns in the peripheral sections 8, 9 the respective scanning properties A, B justify.
  • Fig. 1 there are only a first and a second peripheral portion 8, 9 provided. That is why the rotary drive sets if necessary, the storage body 1 exclusively in e.g. a rotational position X still, in which the sensors SA, SB on the peripheral sections 8, 9 are aligned.
  • FIGS. 4 to 9 are arbitrary many first and second, approximately equally wide circumferential sections 8, 9 regularly alternating over the storage area distributed and at least three sensors S in aligned approximately in the circumferential direction and spaced such that regardless of the rotational position of the Storage body 1 always one sensor at a time a first and a second peripheral section 8, 9 is aligned.
  • the storage body 1 can be in any Stop the rotational position.
  • the sensor signals generated are in the diagram of FIG. 1 shown in the operating position in which the thread supply 5 is at a distance from the scanning zone 12.
  • the sensors SA, SB when A and B pass through X Signals, one with a high signal level and one with a low signal level whose Signal difference is d1. Holds the storage body 1 in of the rotational position X, then the scanning results in continuous Memory area signals A, B with the signal difference d1 (differential voltage).
  • the Thread supply 5 does not reach the scanning zone 12. It is to turn the rotary drive on or to keep it switched on or accelerate.
  • the thread storage and delivery device F is stationary on a housing 13 of the storage body 1 arranged.
  • the rotary drive 15 is in the housing 13 included, the purpose of forming the thread supply 5 Rewinder 14 drives.
  • a feed device not shown promotes the thread supply 5 or the thread turns 6 in the axial direction. Thread Y becomes overhead subtracted from the thread supply 5.
  • the scanner 7 is aligned with the scanning zone 12 with two sensors SA, SB.
  • the storage area 2 has in the circumferential direction offset circumferential sections 8, 9 with each other different scanning properties A, B.
  • the sensors SA, SB are spaced apart in the circumferential direction, that each sensor SA, SB on a circumferential section 8, 9 is aligned.
  • the limit of the thread supply 5 has the scanning zone in FIG. 3 12 not yet reached.
  • the memory area signals generated by the sensors SA, SB as horizontal lines with different Signal levels (difference d1) indicated. It will or the rotary drive 15 remains switched on to thread Y feed until it is in the scanning zone 12 the peripheral portions 8, 9 covers.
  • the sensors SA, SB then generate the same thread signals (dashed double line). From this it is deduced that the rotary drive 15 is to be stopped.
  • the continue performed scanning confirms the standstill as long no change (no consumption) takes place. Will thread Y consumed, the peripheral sections 8, 9 come back free. There are unequal memory area signals on.
  • the rotary drive 15 is switched on again, possibly with a certain delay.
  • the rotary drive 15 (Electric motor) with a shaft 16 on which the formed as a rod cage storage body 1 attached is.
  • It consists of longitudinal bars R with intermediate ones Gaps Z (see FIG. 5), where the bars R and the spaces Z are of equal width and take turns. Instead of continuous gaps Z can be formed on the outside open longitudinal grooves.
  • the Form rods R and the spaces Z and the longitudinal grooves first and second circumferential sections 8 and 9 with clearly different scanning properties for the sensors S of the scanner 7. There are three Sensors S spaced in the circumferential direction so that at least one first circumferential section 8 and at least a second peripheral portion 9 of at least is sensed by a sensor S.
  • spoke star as the feed element V. or spoke ring 19 provided, the spokes 18 enforce the spaces Z and become one Guide the pivot bearing 17 on the shaft 16.
  • the pivot bearing 17 and the spoke star 19 are opposite the axis 3 of the storage body 1 inclined. Because the pivot bearing 17 on a rotationally fixed relative to the shaft 16 held sleeve 17a is arranged, the Spoke star 19 during the orbital movement of the storage body 1 the thread supply 5 to the scanning zone 12.
  • the thread storage and delivery device F according to FIG. 4 is used, for example, for thread delivery to a knitting machine.
  • the thread is pulled off overhead and axially.
  • the scanning device 7 can be in the direction of a Adjust arrow 19 to increase the thread supply size change.
  • the scanning device 7 is over a Circuit L with a control device C for the Rotary drive 15 linked, which - as explained - by Turn the storage body 1 as much thread Y the thread supply 5 feeds as it adheres to during consumption the thread supply size is required.
  • the three sensors S are together in one Housing 30 housed, which is anchored to the housing 13 is.
  • Cover plates 31 shield the sensors S against Impurities.
  • Fig. 5 are five rods R or first peripheral sections 8 with the second circumferential sections in between 9 (spaces Z or longitudinal grooves) in one development shown.
  • the scanning zone 12 with the three sensors S is just outside the thread supply 5.
  • Die Distances a and b seen in the circumferential direction between neighboring sensors are so on the circumferential widths a1 and b1 of the circumferential sections 8 and 9 matched, that in each rotational position of the storage body 1 at least a sensor S a first peripheral portion 8 and at least one further sensor S at the same time scans second peripheral portion 9.
  • the distances a and b are slight larger than the distances a1 and b1.
  • a and b could can also be smaller than a1, b1.
  • peripheral sections 8 and 9 different widths, so it may be necessary be to arrange the sensors at certain intervals, to meet the above condition.
  • Longitudinal bars R and spaces Z the distance between two sensors 2/3 the width of a longitudinal bar R or an even multiple of it.
  • the peripheral sections 8, 9 in Fig. 5 have different Scanning properties A, B on. Generate it when turning the Storage body in the direction of arrow 4, the sensors S. the memory area signal chains 20 shown in FIG. 6, 21 and 22.
  • Each signal chain 20, 21, 22 consists of successive ones high and low signal levels 27, 28. They are in every rotational position of the storage body two different storage area signals present at the same time.
  • In the rotational position X in Fig. 6 lies in the Signal chain 20 a low signal level 28 in the signal chain 21 a high signal level 27 and in the signal chain 22 a low signal level 28 before. From the simultaneous occurrence of at least two dissimilar Memory area signal level 27, 28 results in the statement the absence of the thread supply 5 in the scanning zone 12th
  • FIG. 9 is a block diagram of a circuit L. (Fig. 4).
  • the sensors S are parallel to inverting Gate 32, 33, 34 connected.
  • At the second entrance of each Gate 32, 33, 34 (line 37) is a reference voltage on from a voltage source 36 via a Gate 35 is provided.
  • the signal from each sensor S is connected via a loop 38 to the output of gate 32, 33, 34 and is located at the entrance of a subordinate Gates 39, 40 and 41 on.
  • the outputs of gates 32, 33, 34 are via lines 56, 55, 57 with second inputs the gate 39, 40, 41 connected. From the lines 55, 56, 57 lead bypass loops 42 to the respective ones Outputs of the gates 39, 40, 41, wherein in the Loops 42 contain identically designed resistors are.
  • the outputs of the gates 39, 40, 41 are first Inputs of other gates 43, 44, 45 connected.
  • To the second inputs of the gates 43, 44, 45 is via a Line 54 to a reference voltage across a gate 53 is derived from the power supply 36 and via loops 46 also at the outputs of the gates 43, 44, 45 is present.
  • the outputs of the gates 43, 44, 45 are via parallel diodes 47 in a node 48 merged with the control side of a transistor 49 is connected. Parallel to the link point 48, a capacitor 58 is provided for smoothing the signals.
  • the transistor 49 controls an opto-coupler 50, from the current control elements 51, 52 in supply lines of the rotary drive (not shown) can be controlled.
  • circuit L when concerns arise, mutually unequal storage area signals, under other through the cross-linking by means of the lines 55, 56, 57, a specific control signal at node 48, while when the same thread signals are present in the Node 48 either none or another Control signal is formed.
  • the at the rotation of the Memory body 1 occurring in the signal chains 21, 22, 23 Level changes are compensated in the logic circuit.
  • the transistor 49 With unequal, simultaneous memory area signals the transistor 49 turns on, so that over the opto-coupler 50 and the control members 51, 52 of the Rotary drive is supplied with voltage. Are the same Thread signals on, then the transistor 49 interrupts the Power supply of the opto-coupler 50, so that the Control elements 51, 52 interrupt the power supply or modulate.
  • every signal level becomes with every other signal level compared and the respective difference with its sign determined. Are all differences or at least lies one of the evaluable difference values over one predetermined threshold value, then the rotary drive is energized.
  • the signals of the three sensors S processed in another way by the largest signal level with the lowest signal level compared and this difference is determined. Is that Difference above a threshold value, then the Rotary drive energized. Example as above: 4V, 10V, 7V; biggest difference 6V.
  • sensors S are constant energized infrared sensors D7, D8, D9 and receiver T1, T2, T3 via load resistors to downstream Operational amplifier 59, 60, 61 connected, the Reinforcing effect by coupling additional resistors is determined.
  • the outputs of the operational amplifiers 59, 60, 61 e.g. via lines 62, 69, 70, with a diode network D1, D2, D3 and D4, D5, D6 and one central load resistor R2 connected.
  • the useful signal at the working resistor R2 with operational amplifiers 65, 66 tapped to subsequently with an amplifier 67 to generate a useful signal amplitude in a differential circuit.
  • the amplifiers 65, 66, 67 form one Electrometer subtractor.
  • a subsequent low pass is provided in front of an amplifier 68 which has an adjustable
  • the comparator forms the rotary drive on the output side controls or a control device, not shown supplied for the rotary drive.
  • line 62 is connected via line 63 a speed or speed detector 64 is applied, the frequency of the output signal change of the amplifier 59 a statement on the speed or State "turning or standstill" or also to the turning position of the storage body delivers.
  • the statement can be made for further control or monitoring functions, e.g. at the Rotary drive, or used for fault detection.
  • the circuits L in Figs. 12 and 9 only provide Possibilities. Leave similar or the same functions to be grouped or linked differently electronic components or with a Microprocessor control device in the same or similar Achieve wise.
  • a thread storage and delivery device with a rotatable storage body 1 In a thread storage and delivery device with a rotatable storage body 1, according to FIGS. 10 and 11, the storage area defining, regularly successive longitudinal bars R, 8 and spaces Z, B are provided.
  • the scanning zone 12 there are two sensors S spaced a in the circumferential direction. a corresponds to half the distance a1 of two longitudinal bars R, 8.
  • the thread supply is conveyed downwards by means of the feed element V (spokes 19).
  • a rotary position sensor S T is additionally arranged above the feed element V and is axially aligned with one of the sensors S.
  • the rotational position sensor S T could, however, also be provided in a different position or, if necessary, scan the shaft of the storage body.
  • the gaps Z form symmetrically narrowed extensions 9 'in the scanning area of the rotary position sensor S T , so that circumferentially spaced, scannable memory body sections are formed, the circumferential dimensions of which are smaller than the circumferential dimensions of the gaps Z.
  • the high signal levels 27' in the signal chain 22 'of the rotational position sensor S T used simultaneously, and only sample as in a strobe light, the signal chains 20, 21 and 24, 25 of the sensors S, when a high signal level 27 'of the rotary position sensor ST is applied.
  • the signal or level transitions at the transitions from the spaces Z to the rods R are scanned more densely. This principle is also expedient in the case of three sensors S (see FIGS.
  • the signal chain 22 is like the signal chains 20, 21, 22 as the current statement on rotational speed, deceleration and acceleration and to standstill or to Run and for other control or monitoring tasks or can also be evaluated for speed control of the rotary drive.
  • the window or pivot position signals (signal level 27 ' in Fig. 11) should be shorter in time than that Memory area signal levels 27, 28 and within the same lie.
  • a thread storage and delivery device As Usually generates a working signal (device ON). Due to thread consumption, there should be a thread supply reduced in size on the storage area, the rotary drive run or accelerate. If the thread tension on the Feed side of the storage body increases so that it Torque of the rotary drive exceeds this blocked. This would cause a malfunction in the operation of the Guide device and the knitting machines. Because everyone Signal chain 20, 21, 22, 22 'the rotational speed of the Represented storage body and only occurs when the storage body rotates, this becomes a requirement considered as a reason for shutdown. The control C of Fig.
  • a machine stop switch a time keeping function assigned to the Working signal of the thread storage and delivery device F responds and a when the working signal is present predetermined time period waits for a signal chain occurs or information about the rotary movement is tapped. This information stays longer than that predetermined period of time, then the machine switched off because the proper supply of the Knitting machine is at risk.
  • Each of the aforementioned signal chains can also be used for quality assurance of the knitted goods are used, whereby the information contained in the signal chain with a Information on the thread consumption rate is compared.
  • the thread consumption rate is currently decreasing during the Storage body still rotates at high speed, then the thread take-off point becomes due to the overhead take-off rotate and the thread twists. This twist is undesirable.
  • One with the control device of the rotary drive coupled evaluation and comparison circuit the information about the current consumption rate receives and also the respective signal chain monitors, represents the relationship between the speed of rotation of the storage body and the thread consumption rate firmly.
  • the thread consumption rate falls at the same time quickly rotating storage body, then with this circuit, the memory body immediately stopped, if necessary by switching a brake, to avoid the harmful twist.
  • a safety function becomes similar when the Storage area performed.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Knitting Machines (AREA)
  • Forwarding And Storing Of Filamentary Material (AREA)
  • Filamentary Materials, Packages, And Safety Devices Therefor (AREA)
  • Looms (AREA)
  • Replacing, Conveying, And Pick-Finding For Filamentary Materials (AREA)
  • Braiding, Manufacturing Of Bobbin-Net Or Lace, And Manufacturing Of Nets By Knotting (AREA)
EP94117383A 1993-12-17 1994-11-03 Verfahren zum Ermitteln eines Fadenvorrats in einer Fadenspeicher- und -liefervorrichtung, und Fadenspeicher- und -liefervorrichtung Expired - Lifetime EP0658507B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE9304257A SE502175C2 (sv) 1993-12-17 1993-12-17 Förfarande och anordning för fastställande av trådmagasinets variation på en fournissör
SE9304257 1993-12-17

Publications (2)

Publication Number Publication Date
EP0658507A1 EP0658507A1 (de) 1995-06-21
EP0658507B1 true EP0658507B1 (de) 1998-02-25

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EP94117383A Expired - Lifetime EP0658507B1 (de) 1993-12-17 1994-11-03 Verfahren zum Ermitteln eines Fadenvorrats in einer Fadenspeicher- und -liefervorrichtung, und Fadenspeicher- und -liefervorrichtung

Country Status (14)

Country Link
US (1) US5765399A (sv)
EP (1) EP0658507B1 (sv)
JP (1) JP2859440B2 (sv)
KR (1) KR100345614B1 (sv)
CN (1) CN1132774C (sv)
BR (1) BR9408326A (sv)
CZ (1) CZ285707B6 (sv)
DE (1) DE59405305D1 (sv)
ES (1) ES2114647T3 (sv)
RU (1) RU2125965C1 (sv)
SE (1) SE502175C2 (sv)
TR (1) TR28288A (sv)
UA (1) UA29491C2 (sv)
WO (1) WO1995016628A1 (sv)

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Publication number Priority date Publication date Assignee Title
EP0824610B1 (en) * 1995-05-08 2001-01-31 Heinrich Fabschitz Apparatus for the control of the rotational speed of a driving unit for a yarn windings storage drum
DE19545891A1 (de) * 1995-12-08 1997-06-12 Memminger Iro Gmbh Verfahren zum Überwachen der Abtastverhältnisse beim Steuern einer Fadenliefervorrichtung
GB2308137B (en) * 1995-12-16 1999-08-11 Memminger Iro Gmbh Method for surveying the detection conditions for controlling a yarn feeding d evice
IT1292277B1 (it) * 1997-04-24 1999-01-29 Lgl Electronics Spa Tastatore ottico perfezionato per la sorveglianza della riserva di filato negli apparecchi alimentatori di trama ed apparecchio
SE9703369D0 (sv) * 1997-09-16 1997-09-16 Iro Ab Verfahren zum zwischenspeichern von faden und liefergerät
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UA29491C2 (uk) 2000-11-15
DE59405305D1 (de) 1998-04-02
KR100345614B1 (ko) 2002-11-30
CZ285707B6 (cs) 1999-10-13
SE9304257D0 (sv) 1993-12-17
RU2125965C1 (ru) 1999-02-10
EP0658507A1 (de) 1995-06-21
BR9408326A (pt) 1997-08-19
US5765399A (en) 1998-06-16
KR970700131A (ko) 1997-01-08
CZ150196A3 (en) 1996-09-11
ES2114647T3 (es) 1998-06-01
WO1995016628A1 (en) 1995-06-22
CN1137782A (zh) 1996-12-11
CN1132774C (zh) 2003-12-31
TR28288A (tr) 1996-04-24
JPH09507047A (ja) 1997-07-15
JP2859440B2 (ja) 1999-02-17
SE9304257L (sv) 1995-06-18
SE502175C2 (sv) 1995-09-04

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