EP0605550A1 - Process and power loom. - Google Patents
Process and power loom.Info
- Publication number
- EP0605550A1 EP0605550A1 EP92920145A EP92920145A EP0605550A1 EP 0605550 A1 EP0605550 A1 EP 0605550A1 EP 92920145 A EP92920145 A EP 92920145A EP 92920145 A EP92920145 A EP 92920145A EP 0605550 A1 EP0605550 A1 EP 0605550A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- weft
- brake
- entry
- tension
- thread
- 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
Links
- 238000000034 method Methods 0.000 title claims abstract description 103
- 230000008569 process Effects 0.000 title claims description 93
- 238000003780 insertion Methods 0.000 claims abstract description 69
- 230000037431 insertion Effects 0.000 claims abstract description 69
- 238000009941 weaving Methods 0.000 claims description 30
- 230000002441 reversible effect Effects 0.000 claims description 7
- 235000014676 Phragmites communis Nutrition 0.000 claims description 5
- 239000004744 fabric Substances 0.000 claims description 2
- 241000270722 Crocodylidae Species 0.000 claims 1
- LNNWVNGFPYWNQE-GMIGKAJZSA-N desomorphine Chemical compound C1C2=CC=C(O)C3=C2[C@]24CCN(C)[C@H]1[C@@H]2CCC[C@@H]4O3 LNNWVNGFPYWNQE-GMIGKAJZSA-N 0.000 claims 1
- 238000011156 evaluation Methods 0.000 claims 1
- 238000001514 detection method Methods 0.000 abstract description 3
- 230000000694 effects Effects 0.000 description 6
- 238000006243 chemical reaction Methods 0.000 description 4
- 238000005070 sampling Methods 0.000 description 4
- 230000001133 acceleration Effects 0.000 description 3
- 238000012937 correction Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000012544 monitoring process Methods 0.000 description 3
- 238000012546 transfer Methods 0.000 description 3
- 230000004913 activation Effects 0.000 description 2
- 230000009849 deactivation Effects 0.000 description 2
- 230000001419 dependent effect Effects 0.000 description 2
- 230000004044 response Effects 0.000 description 2
- 230000001360 synchronised effect Effects 0.000 description 2
- 230000002123 temporal effect Effects 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 238000012790 confirmation Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000002939 deleterious effect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 238000012966 insertion method Methods 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000000284 resting effect Effects 0.000 description 1
Classifications
-
- 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
-
- 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
- B65H59/10—Adjusting or controlling tension in filamentary material, e.g. for preventing snarling; Applications of tension indicators by devices acting on running material and not associated with supply or take-up devices
- B65H59/20—Co-operating surfaces mounted for relative movement
- B65H59/26—Co-operating surfaces mounted for relative movement and arranged to deflect material from straight path
-
- 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
-
- 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
- B65H2553/23—Capacitive detectors, e.g. electrode arrangements
-
- 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
- B65H2553/26—Piezoelectric sensors
-
- 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
Definitions
- the invention relates to a method of the type specified in the preamble of claim 1 and a weaving machine of the type specified in the preamble of claim 4.
- a tension sensor and an insertion brake are provided downstream of the weft feeder, the insertion brake being controlled as a function of the weft tension curve sensed by the tension sensor.
- the tension sensor like the insertion brake, applies friction to the weft thread during the insertion process, which is disadvantageous at today's high insertion speeds and short insertion times, because frictional loading of the weft thread also has an undesirable influence on the during critical acceleration and high-speed phases. Sequence of the entry process nij ⁇ imt and damage the weft can break if necessary.
- the permanently active tension sensor undesirably applies a frictional load to the weft thread even if it should be transported as freely as possible.
- Controlled weft insertion brakes for jet looms are known from EP-Al-03 56 380 and EP-Al-01 55 431, which are only temporarily controlled in coordination with the movement of the weft during the insertion process intervene in order to dampen the inevitable increase in tension due to a whip effect when the weft thread is stopped at the end of the insertion process.
- it is known to slow down the weft at the end of the insertion process if, due to a whip effect resulting from the stopping of the weft, a strong tension peak occurs in the weft, which can break, locally stretch or pull back the weft and bring it into a wavy shape.
- Braking should start shortly before the occurrence of the tension peak, but only be so intense and last so long that the tension peak is reduced, the weft thread is stretched as far as possible before the time specified for the entry process has elapsed and the free end reaches the compartment end before that Riet strikes.
- the brake control should therefore be tailored to the actual movement of the weft during the insertion process.
- Information about the weft movement that can be used to control the braking are, for example, continuity signals which are generated in the weft feeder when the thread is pulled off.
- the time of the occurrence of the tension peak is in addition a useful and precise information for the completion of the insertion process and for controlling the braking for subsequent entry processes, which makes it possible to make a possible difference between the movement of the weft thread from the weft thread feeder and that, for example because of a Trigger balloons, deviating movement of the weft end in the compartment to take into account timely control of the braking.
- the voltage scan also provides information as to whether the entry process is correct before Has been brought to an end, and previously with a drop in voltage detected at the start of the entry process, that the entry process has started properly and when the weft thread is released by the feeder for triggering.
- the weft should be braked at the beginning of the entry process for a secure take-up of the weft end, in the middle phase when the weft end is handed over for a safe transfer and at the end of the entry process for a correct stretching of the weft and a safe release.
- braking has been carried out continuously up to now, but this leads to sharp increases in tension when the weft thread is accelerated after the take-up and after the transfer.
- a tension sensor permanently mechanically scanning the tension separately from the insertion brake loads the weft thread in the acceleration phases with frictional forces which lead to faults and which undesirably overlap with the action of the insertion brake.
- the invention has for its object to provide a method of the type mentioned and a weaving machine and an entry brake, with which the weft insertion processes can be optimized with regard to the loom-dependent predetermined entry duration and protection of the weft.
- the weft tension is sampled temporarily during an insertion process and only if the friction applied to the weft thread as a result of the scanning has no deleterious influence on the insertion process.
- the tension sensing is suspended.
- the voltage sampling can be carried out individually when information about the voltage curve or absolute voltage values is needed.
- the voltage sensing can be individually adjusted from entry process to entry process, so that the entry processes can be gradually optimized. The method realizes the division of an entry process into critical and uncritical phases for the voltage sensing with regard to optimized entry processes despite the optimization of the Entry processes tapped voltage information.
- the weaving machine it is provided to reverse the tension sensor in order to carry out the tension sensing only temporarily and then when the weft thread can tolerate this.
- the tension sensor creates the prerequisite for obtaining information about the entry process and, if necessary, for the control of subsequent entry processes in a phase of the insertion process which is not critical with regard to the frictional influence of the weft thread.
- a simultaneous braking frictional influence on the weft thread is a prerequisite for the tension sensing.
- the reaction forces arising from the desired braking are advantageously used simultaneously for voltage sensing.
- the temporary voltage sampling is extended to the phases before and after the actual entry process, during which no braking takes place.
- phases of the insertion process which are critical with regard to the frictional influence of the weft thread, the tension sensing is suspended.
- information is obtained as to when and with what influence on the tension in the weft thread, for example, the weft strikes, the weft thread is cut off, the weft thread is released for entry and starts moving, or whether there is a fault, as a result of deviations can be determined by an at least in principle predictable voltage curve and, if necessary, corrected for later entry processes is used or used to switch off.
- a structurally simple and particularly important embodiment emerges from claim 6.
- a separate tension sensor is saved and an additional friction point on the weft thread is avoided.
- the friction exerted during braking and / or the resulting reaction forces and / or the extent of the thread deflection are used for the tension sensing.
- the control of the voltage sensor is easy because it is done by the entry brake.
- the embodiment according to claim 7 is also particularly expedient because the voltage sensor is small and can be accommodated inexpensively.
- the tension scanning takes place directly and where the reaction force of the weft thread is effective.
- the embodiment according to claim 9 is also particularly expedient detected tension changes in the weft thread make it possible to determine the actual movement, for example of the weft thread end, in the compartment and to adjust the control of the insertion brake to the actual movement sequence.
- Certain fluctuations in tension occur in relatively equal positions of the weft thread in the compartment, regardless of how fast the insertion process takes place.
- the continuity signals only approximate the sequence of movements because there are distorting influences in the compartment between the feeder and the movement of the thread end, for example a pull-off balloon.
- the activation and deactivation of the entry brake is carried out on the basis of the continuity signals, but it is possible by means of the information determined from the voltage curve to at least largely adapt the activation and deactivation to the actual movement sequence.
- auxiliary functions during the entry process can also be matched to the actual movement sequence, for example the actuation of transport nozzles, a cutting device and the like.
- the weft insertion brake has a braking element which can be moved by means of a controllable drive from one side of the weft thread against the deflection and deflection of the weft thread from its stretched position to the other side of the weft thread Brake element designed as a weft tension sensor.
- the embodiment according to claim 12 is also structurally simple and advantageous.
- Either the braking element or the deflecting element is designed as the weft tension sensor. Designing the deflection element as the weft tension sensor may result in structural simplifications.
- the embodiment according to claim 13 is also expedient because a large and effective wrap angle for the weft thread can be set for braking and the reaction forces required for tension sensing can be tapped clearly and precisely.
- the drive therefore serves both to control the entry brake and to reverse the integrated voltage sensor.
- a quickly responding, reliable and small-sized voltage sensor is available in the embodiment according to claim 14.
- the signals then to be further processed are calculated, for example, based on calculations from the measured signals and won at the same time derived from the control thread deflection angle on the tension sensor. This means that the tension in the thread is determined on the basis of the sensor signals and the thread deflection angle on the tension sensor.
- this axial disc brake is designed as a controllable entry brake and is already provided with the tension sensor, which, however, only applies friction to the weft thread when the entry brake is activated, but remains in phases of the entry process without any significant friction influence, in which the entry process is disrupted or Weft could be damaged.
- a voltage sensor should be arranged in each channel of the main nozzle as a detector for the end of the respective insertion process.
- FIG. 1 schematically shows a loom with an associated weft feeder
- 2 shows a detailed variant of FIG. 1
- FIG. 3 shows a detail of the subject of FIG. 1,
- FIG. 5 shows a diagram of an entry process in a rapier weaving machine
- FIG. 10 shows a plan view of a further embodiment of an entry brake.
- a weaving machine W according to FIG. 1 for example an air-jet weaving machine, has a compartment 1 with a reed 2, air nozzles 3 and an inlet-side main nozzle 4 as a means of transport for inserting a weft Y into compartment 1.
- the weaving machine W also includes a weft feeder 5, which is equipped with a stop device 6 with an associated stop element 7 and a passage sensor 8. Downstream of the Suppliers 5 are arranged in the weft path a controlled entry Bre 9 'and downstream of this a controlled voltage sensor 10'.
- a control device 11 which has a synchronization device 12 in the shown separate arrangement of entry brake 9 'and tension sensor 10', is connected to the individual components of the weaving machine and the feeder in a signal-transmitting, signal-receiving or controlling connection, as is indicated by dashed lines.
- the insertion brake 9 ' is controlled into the braking position shown in FIG. 1 in order to dampen an annoying and possibly harmful tension increase or suppress.
- the entry brake 9 ' is controlled, for example, on the basis of continuity signals from the continuity sensor 8, as is the voltage sensor 10', which is otherwise can be synchronized with the entry brake 9 'with regard to its reversal via the synchronization device 12.
- the tension sensor 10 temporarily scans the tension curve in the weft thread and transmits to the control device 11 absolute, relative or temporal information about the tension curve.
- the tension sensor 10 is structurally integrated in the entry brake 9, in such a way that an element of the entry brake 9 which deflects the weft thread and acts upon it with friction is simultaneously designed as the tension sensor 10 or is part of the same.
- a friction necessary for scanning the tension curve is only exerted on the weft thread when the controlled entry brake 10 is in a braking position at the same time.
- the weft feeder 5 ' is equipped with an insertion brake 9 designed as an axial plate brake 13.
- a counter plate 15 is attached in a stationary manner on the face side, which has a circular circumference.
- a brake actuator 16 is coaxially assigned to the counter plate 15, which has a central passage 17 and the distance from the counter plate 15 to the system can be adjusted by means of a controlled drive 18, for example from the control device 11, during an entry process.
- the weft Y is drawn off from the storage body 14, and thereby moves all around the circumferential edge of the counter plate 15 before it is deflected inwards between the plates 15 and 16 and is axially pulled away through the passage 17 of the brake actuator 16.
- the braking can be precisely controlled by the deflection and clamping. If the brake actuator 16 is steered far away from the counter-plate 15, then the only mild deflection of the weft thread does not influence the friction during insertion, which is harmful to a rapier weaving machine.
- the voltage sensor 10 is integrated directly into the entry brake 9, either in the passage 17 or in the peripheral edge of the counter plate 15 (indicated by dashed lines).
- the vertical axis represents the weft tension and the horizontal axis 2 the time.
- a single entry process is shown.
- the curve A shown in solid lines represents the tension curve in the weft thread during the insertion process when using the controlled insertion brake 9 ', 9.
- the curve part B shown in broken lines represents the tension curve without braking the weft thread. It is about this a typical entry process in a modern weaving machine.
- the two time periods H represent the phases during an insertion process during which the tension curve in the weft thread is scanned.
- the period G represents the phase in which the weft is accelerated to its maximum speed and is then transported through the compartment at maximum speed.
- ta is the time at which the entry brake takes effect
- a is the duration of the braking
- tB represents the end of braking and at the same time the occurrence of an extreme voltage peak that would result without braking at the end of the entry in the voltage curve (curve part B, dashed lines).
- the curve part g represents an increase in tension when the reed strikes, which is followed by the curve part h.
- a parallel time axis t is shown below the horizontal axis t, on which the continuity signals occurring during the entry process (for example 1 to 10 for ten drawn turns) are plotted.
- the first step is to enter without braking in order to determine the point in time tB that occurs for a thread type with each entry process in a fixed lateral assignment and at the end of the entry process and represents the end of the entry process. With each entry process, tB has the same time interval X from a continuity signal to be selected, e.g. continuity signal No. 5.
- the time period x1 is found that occurs after the passage signal No. 5 must be waited until the entry brake 9 ', 9 is activated.
- the response time of the entry brake is of course taken into account.
- the scanning of the voltage curve (curve A) can be evaluated in order to derive information for the control device 11 in order to be able to determine at what times and to what extent and over what duration the aforementioned and characteristic voltage changes occur.
- Correction signals for adapting the control for example the entry brake 9 ', 9, the nozzles 3, 4, the cutting device (not shown), the stop device 6 and the like can be determined therefrom, which are then taken into account for later entry processes or are registered as good or error messages .
- the curve parts A drawn in solid line represent the voltage curve when using a controlled entry brake, the voltage curve either via a separate and synchronized voltage sensor 10 '(as in FIG. 1) or by means of a voltage sensor 10 integrated into the entry brake, for example as in FIGS 3, is scanned.
- the curve parts B shown in broken lines represent the voltage curve in conventional methods in which is continuously braked via the entry process.
- the dash-dotted curve areas C represent the reduced voltage increases due to the entry brake controlled in the rest position, no voltage sampling being carried out during these phases.
- Braking is used in a rapier weaving machine because the first rapier only reliably picks up the weft end when a certain retention force acts in the weft, because the first rapier only reliably transfers the weft end to the second rapier when the weft thread is subjected to a retaining force , and because the second looper then finally safely releases the weft end and extends the weft thread, even if a retaining force is effective at the end of the insertion process. In the intermediate acceleration and deceleration phases, braking of the weft thread is unfavorable.
- the information is important which, for example, indicates from the scanning of the tension curve that the weft thread has begun to move at the tension peak E, is properly cut off when the tension drops K, and the correct time interval of the attack of the strikes when the tension increases Riets from the other voltage fluctuations is confirmed.
- the control of the weft braking and the scanning of the tension in the weft according to the diagram of FIG. 5 can be achieved particularly advantageously in a rapier weaving machine with the axial plate brake 13 according to FIG. 3, the pulling resistance of which in the rest position is so low that it reduces the entry process of the The rapier weaving machine is not affected, but it can be controlled so precisely and precisely that the brakes are braked exactly at the important times during the insertion process and the thread tension is then also sensed.
- the entry brake 9 according to FIGS. 6A, 6B which is particularly useful as an entry brake for jet looms, in particular air jet looms, because it allows the weft thread to pass through without friction in its rest position, has a thread eyelet and a further two on a base body 22 as a stationary deflection element 19 deflection points 20 and 21 designed as pins and spaced apart in the direction of thread travel.
- a reversible drive motor 24 acts on a shaft 23, which is arranged in the base body 22, for example a stepper motor or a direct current motor, which can be reversed quickly and precisely predeterminably in one direction or the other during an entry process by the control device and which can be precisely reproduced in each case Takes rotational positions.
- the tension in the weft thread is expediently determined on the basis of the signal of the respective sensing element 29 and then the deflection angle of the thread which can be determined from the rotational position of the shaft 23 or the motor 24.
- the weft thread Y can pass through smoothly and without contact, and only in the Braking position (a braking position is indicated by dashed lines) brakes the weft Y precisely controllable by multiple deflections.
- the stationary deflection elements 19 and 21 are designed as thread eyelets.
- a coaxial tubular body 37 is arranged between them, and its ends define further stationary deflection points 35 and 36.
- the movable brake elements 27 and 26 are attached to the two ends of the lever 25 indicated by broken lines and are positively connected to the drive 24 via the shaft 23.
- the movable brake elements 27 and 26 are shifted into the dashed positions in which the weft thread is deflected a total of six times and is effectively braked in the process.
- the movable brake element 27 can be provided with a sensing element 29 and can therefore be designed as a voltage sensor 10.
- the tension in the weft Y is sensed when the entry brake 9 has been adjusted to a braking position. If, however, the entry brake 9 is in its rest position, then the weft Y is not sensed for its tension and therefore no harmful friction is exerted on the weft.
- the precise information, which can be derived from the voltage curve, of the end of the entry process makes it possible to set the time delay between the last safe passage signal and the time at which the entry brake is activated. It is also possible to precisely determine the response time of the entry brake under different conditions via the voltage curve. Efforts have long been made to develop a smooth voltage sensor.
- the reversible voltage sensor of the type explained here is a smoothly acting voltage sensor, at least in the phases of the entry process, in which the friction would interfere with the entry process.
- the tension sensing from the start of the entry to the start of movement of the weft provides useful information as to whether the main nozzle has inserted correctly or not.
- the tuning of the main nozzle can be changed accordingly and based on this information.
- An oversized surge in voltage at the end of the Entry process allows a conclusion that the main nozzle has not switched off properly, a corresponding correction can be made at any time, taking into account the information of the voltage curve.
- the brake and thus the tension sensor can be controlled by slavishly utilizing a trig signal from the weaving machine or from the supplier or from a so-called channel-related control device.
Landscapes
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Looms (AREA)
Abstract
Selon un procédé de commande de l'insertion d'un fil de trame, le fil de trame est temporairement soumis à un frottement entraînant un freinage, et la tension du fil est mécaniquement détectée. Afin d'éviter que le frottement n'exerce une influence perturbatrice ou nuisible sur le fil, la tension du fil n'est détectée que temporairement pendant des phases déterminées de l'insertion, afin de tirer, de la courbe de variation de la tension dans le temps, des informations utiles pour la commande. Dans un métier mécanique, notamment un métier à tuyères, à lance ou à projectiles, un capteur de la tension du fil de trame peut être commuté pendant l'insertion entre une position de détection et une position passive dans laquelle il ne touche pas le fil de trame. De manière appropriée, le capteur de tension est intégré dans le frein d'insertion ou forme lui-même l'élément de freinage.According to a method of controlling the insertion of a weft thread, the weft thread is temporarily subjected to friction causing braking, and the thread tension is mechanically detected. In order to prevent friction from exerting a disturbing or harmful influence on the thread, the thread tension is detected only temporarily during specific phases of the insertion, in order to draw, of the variation curve of the tension in time, useful information for the order. In a mechanical loom, particularly a nozzle, lance or projectile loom, a weft thread tension sensor can be switched during insertion between a detection position and a passive position in which it does not touch the thread. frame. Suitably, the tension sensor is integrated into the insertion brake or itself forms the braking element.
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE4131656 | 1991-09-23 | ||
DE4131656A DE4131656A1 (en) | 1991-09-23 | 1991-09-23 | METHOD AND WEAVING MACHINE |
PCT/EP1992/002203 WO1993006278A2 (en) | 1991-09-23 | 1992-09-23 | Process and power loom |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0605550A1 true EP0605550A1 (en) | 1994-07-13 |
EP0605550B1 EP0605550B1 (en) | 1995-12-06 |
Family
ID=6441289
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP92920145A Expired - Lifetime EP0605550B1 (en) | 1991-09-23 | 1992-09-23 | Process and power loom |
Country Status (7)
Country | Link |
---|---|
US (1) | US5462094A (en) |
EP (1) | EP0605550B1 (en) |
JP (1) | JP3435512B2 (en) |
KR (1) | KR100283310B1 (en) |
CZ (1) | CZ283142B6 (en) |
DE (2) | DE4131656A1 (en) |
WO (1) | WO1993006278A2 (en) |
Cited By (1)
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US7073399B2 (en) | 2001-10-29 | 2006-07-11 | Iropa Ag | Yarn processing system |
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IT1264003B (en) * | 1993-04-05 | 1996-09-06 | Tiziano Barea | METHOD AND DEVICE TO CHECK AND MAINTAIN THE CORRECT ADJUSTMENT OF THE TENSION OF A YARN SUPPLIED TO A TEXTILE MACHINE |
BE1007898A3 (en) * | 1993-12-22 | 1995-11-14 | Picanol Nv | Device for looms. |
BE1008058A3 (en) * | 1994-02-02 | 1996-01-03 | Picanol Nv | Device for gripping a weft thread |
DE19605844A1 (en) * | 1996-02-16 | 1997-08-21 | Iro Ab | Device for deflecting a thread |
IT1284077B1 (en) * | 1996-06-27 | 1998-05-08 | Roj Electrotex Nuova Srl | WIRE BRAKING DEVICE FOR TEXTILE MACHINES |
US6253795B1 (en) | 1998-03-14 | 2001-07-03 | Stephan Kuster | Tensioning apparatus and method for an interlaced thread |
GB9817980D0 (en) * | 1998-08-18 | 1998-10-14 | Fibrevision Limited | Measuring instrument |
DE19858682A1 (en) * | 1998-12-18 | 2000-06-21 | Iro Patent Ag Baar | Loom weft feed system has a separation unit at the tensiometer to separate the weft yarn from the probe in the event of a zero yarn tension measurement signal for effective control of the yarn brake |
SE0002813D0 (en) | 2000-08-02 | 2000-08-02 | Iro Patent Ag | Shut-off braking brake and drive control of Shut-off entries in one web engine |
NL1017378C2 (en) * | 2001-02-16 | 2002-08-19 | Te Strake Bv | Method for the function monitoring of a break-in brake. |
DE10117879A1 (en) * | 2001-04-10 | 2002-10-17 | Iro Patent Ag Baar | Yarn monitor, for weft yarns at a loom, has guides to lead the yarn through a deflected path with a converter to generate signals for yarn movement and tension from mechanical loading to an electronic evaluation unit |
SE523442C2 (en) * | 2001-04-19 | 2004-04-20 | Eltex Sweden Ab | Ways to monitor thread |
DE10151780C1 (en) * | 2001-10-19 | 2003-05-22 | Dornier Gmbh Lindauer | Method and device for influencing the thread braking force of a weft thread brake arranged between a yarn supply system and a thread store of a weaving machine |
DE10210911A1 (en) * | 2002-03-04 | 2003-09-18 | Picanol Nv | Device for detecting and / or adjusting a tensile force in a thread |
DE10333292A1 (en) * | 2003-07-22 | 2005-02-10 | Iropa Ag | Thread processing system and thread tensiometer |
FR2864555B1 (en) | 2003-12-24 | 2006-01-27 | Staubli Lyon | METHOD FOR MONITORING THE SUPPLY VOLTAGE OF AT LEAST ONE FRAME WIRE, FRAME WIRE FEEDER, AND WEAVING WIRE EQUIPPED WITH SUCH A DEVICE |
DE102005011841A1 (en) * | 2005-03-15 | 2006-09-21 | Iro Ab | Thread processing system and controlled thread brake |
US8960596B2 (en) | 2007-08-20 | 2015-02-24 | Kevin Kremeyer | Energy-deposition systems, equipment and method for modifying and controlling shock waves and supersonic flow |
KR101894620B1 (en) * | 2012-01-24 | 2018-09-03 | 나이키 이노베이트 씨.브이. | Intermittent weaving splicer |
US10669653B2 (en) * | 2015-06-18 | 2020-06-02 | Kevin Kremeyer | Directed energy deposition to facilitate high speed applications |
KR102221404B1 (en) | 2019-10-11 | 2021-03-02 | 안기영 | Manufacturing Method Of A Cover For Preventing Wear of Upright Typed Yarn Guide Of Knitting Yarn Feeder Reel |
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JPS5813659B2 (en) * | 1977-03-26 | 1983-03-15 | 日産自動車株式会社 | Loom weft gripping device |
CH639152A5 (en) * | 1979-05-04 | 1983-10-31 | Loepfe Ag Geb | ELECTRONIC WIFE GUIDE ON A WEAVING MACHINE WITH GRIPPER GUARDS. |
EP0155431A1 (en) * | 1984-03-07 | 1985-09-25 | Maschinenfabrik Sulzer-Rüti Ag | Process for weft insertion in looms, and loom for realising this process |
US4875506A (en) * | 1987-05-27 | 1989-10-24 | Sulzer Brothers Limited | Yarn brake for a weft yarn |
JPH0226957A (en) * | 1988-07-12 | 1990-01-29 | Nissan Motor Co Ltd | Method for controlling picking of fluid jet type loom |
DE58908655D1 (en) * | 1988-08-25 | 1995-01-05 | Rueti Ag Maschf | Method for avoiding tension peaks of a weft thread during weft insertion during the braking process. |
IT1227077B (en) * | 1988-09-08 | 1991-03-14 | Vamatex Spa | SYSTEM TO CONTROL THE WEFT VOLTAGE SUPPLIED TO A TEXTILE FRAME WITHOUT SHUTTLES. |
BE1002841A3 (en) * | 1989-02-16 | 1991-06-25 | Picanol N V Naamloze Vennoosch | Device for braking a weft thread in a weaving machine. |
IT1248647B (en) * | 1990-05-28 | 1995-01-26 | Roy Electrotex Spa | INSTRUMENT FOR MEASURING THE MECHANICAL TENSION OF WIRES, IN PARTICULAR OF WEFT THREADS IN THE FEEDING OF WEAVING FRAMES, AND WEFT FEEDER EQUIPPED WITH THE MEASURING INSTRUMENT |
-
1991
- 1991-09-23 DE DE4131656A patent/DE4131656A1/en not_active Withdrawn
-
1992
- 1992-09-23 EP EP92920145A patent/EP0605550B1/en not_active Expired - Lifetime
- 1992-09-23 DE DE59204624T patent/DE59204624D1/en not_active Expired - Fee Related
- 1992-09-23 JP JP50580193A patent/JP3435512B2/en not_active Expired - Fee Related
- 1992-09-23 US US08/211,350 patent/US5462094A/en not_active Expired - Fee Related
- 1992-09-23 CZ CZ94648A patent/CZ283142B6/en not_active IP Right Cessation
- 1992-09-23 KR KR1019940700941A patent/KR100283310B1/en not_active IP Right Cessation
- 1992-09-23 WO PCT/EP1992/002203 patent/WO1993006278A2/en active IP Right Grant
Non-Patent Citations (1)
Title |
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See references of WO9306278A2 * |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7073399B2 (en) | 2001-10-29 | 2006-07-11 | Iropa Ag | Yarn processing system |
Also Published As
Publication number | Publication date |
---|---|
US5462094A (en) | 1995-10-31 |
DE59204624D1 (en) | 1996-01-18 |
CZ283142B6 (en) | 1998-01-14 |
CZ64894A3 (en) | 1994-08-17 |
WO1993006278A3 (en) | 1993-05-13 |
JPH07502078A (en) | 1995-03-02 |
WO1993006278A2 (en) | 1993-04-01 |
KR100283310B1 (en) | 2001-03-02 |
DE4131656A1 (en) | 1993-03-25 |
JP3435512B2 (en) | 2003-08-11 |
EP0605550B1 (en) | 1995-12-06 |
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