EP1648808B1 - Fadenverarbeitungssystem und verfahren zur anpassung - Google Patents
Fadenverarbeitungssystem und verfahren zur anpassung Download PDFInfo
- Publication number
- EP1648808B1 EP1648808B1 EP04740812A EP04740812A EP1648808B1 EP 1648808 B1 EP1648808 B1 EP 1648808B1 EP 04740812 A EP04740812 A EP 04740812A EP 04740812 A EP04740812 A EP 04740812A EP 1648808 B1 EP1648808 B1 EP 1648808B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- yarn
- storage body
- diameter
- level threshold
- 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.)
- Expired - Lifetime
Links
- 238000012545 processing Methods 0.000 title claims abstract description 16
- 238000000034 method Methods 0.000 title claims description 9
- 230000006978 adaptation Effects 0.000 title 1
- 238000011156 evaluation Methods 0.000 claims abstract description 16
- 230000005540 biological transmission Effects 0.000 claims abstract description 14
- 230000005693 optoelectronics Effects 0.000 claims abstract description 8
- 230000002596 correlated effect Effects 0.000 claims abstract 3
- 238000009941 weaving Methods 0.000 claims description 42
- 230000003247 decreasing effect Effects 0.000 claims description 3
- 238000001514 detection method Methods 0.000 claims 1
- 239000004744 fabric Substances 0.000 abstract description 6
- 238000004804 winding Methods 0.000 description 7
- 238000012546 transfer Methods 0.000 description 3
- 238000004891 communication Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000004044 response Effects 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 230000004308 accommodation Effects 0.000 description 1
- 230000006399 behavior Effects 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 230000003467 diminishing effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
Images
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
- D03D47/36—Measuring and cutting the weft
- D03D47/361—Drum-type weft feeding devices
- D03D47/367—Monitoring yarn quantity on the drum
Definitions
- the invention relates to a thread processing system according to the preamble of claim 1 and a method according to the preamble of claim 6.
- the weft length must be dimensioned according to the respectively set weaving width in the air-jet loom by the measuring delivery device.
- a stop device with a stop element is provided on the measuring delivery device Depending on the weave cycle is moved into the storage body or withdrawn.
- the engaged stop element locks the weft thread against a trigger.
- the retracted stopper leaves until a new engagement a predetermined number of weft thread turns deducted until the respective shot length is reached.
- the diameter of the storage body is set so that an integer multiple (the number of turns to be released) of the storage body circumference corresponds to the weft length or weaving width.
- Such a setting is required, for example, with every change in the weaving width, and possibly also as readjustment when too short or too long weft threads occur.
- an information transmission path for example in a serial CAN bus system for at least the shot length or the weaving width.
- the microprocessor of the measuring supply device controller calculates the number of weft yarn turns to be released per shot and the respectively optimal diameter of the storage body; which is displayed either on the measuring device or on the control panel of the loom control, so that the staff can make the diameter adjustment manually or with an auxiliary device.
- the Meßunter choir-control is also responsible for providing on the storage body in each case a just enough large number of weft threads that covers the consumption by the intermittent weft thread withdrawal and is continuously supplemented. The weft threads are going through a winding element formed on the storage body.
- the winding element is driven by a motor controlled by the metering device controller in response to signals from an opto-electronic thread sensor which provides signals to the microprocessor from the presence or absence of the weft in a scanning zone on the storage body. If the thread sensor detects the presence of the weft in the scanning zone, the motor will be decelerated or stopped. If the thread sensor detects the absence of the weft in the scanning zone, then the motor is accelerated.
- opto-electronic thread sensors which can be divided mainly into two categories.
- the thread sensor of the first category uses a reflective surface from the storage body and monitors the reflected light from the surface, which is shaded as soon as the thread has arrived on the surface.
- the thread sensor of the other category scans the weft directly, ie, it monitors the reflected light from the weft in presence.
- a metering device especially in a metering device operating with a thread separation, the use of the thread sensor of the first category with reflective surface in the storage body is impractical for several reasons:
- the space for operating elements of the storage body hardly allows the reflective surface to be accommodated.
- the installation space to be used for the thread measuring stop device restricts the accommodation of a reflective surface. Since the contact area between the weft thread and the storage body should be as small as possible in order to minimize harmful friction, the large reflecting surface can hardly provide sufficient size.
- the signal evaluation is difficult because it can no longer be reliably discriminated because of unavoidable contamination, whether the reflective surface is covered by the weft thread or by dirt. All these restrictions do not apply to the thread sensor of the second category, which is therefore preferred for such thread processing systems.
- the yarn sensor scanning the reflection light of the weft yarn another problem is that it may be difficult to discriminate between reflected light from the weft yarn and reflected light from mechanical parts of the storage body. Namely, the light reflected from each background component changes in intensity, for example, depending on whether a large diameter or a small diameter is set, which is the light path distance changes.
- the Meßbiesch does not know the actually set diameter, so far erroneous signals can not be reliably avoided after a diameter adjustment.
- the invention has for its object to provide a yarn processing system and a method of the type mentioned, with which the aforementioned disadvantage of a yarn sensor of the second category in the measuring device is eliminated in a structurally simple manner, and changing light reflections of background parts of the storage body has no effect on the precision take the weft scanning.
- the recognition is taken into account that the signal levels of the presence and absence signals decrease with decreasing diameter of the storage body in an opto-electronic, responsive to the reflection light of the weft yarn sensor and make it difficult, regardless of the set diameter between the presence and absence signal levels discriminate.
- the envisaged level-threshold selector device provides a level threshold value for the evaluation of the signal levels which lies between the presence and absence signal levels generated at this diameter for a specific diameter setting range or a specific diameter of the storage body.
- the selected level threshold is, so to speak, a reference plane, with the aid of which the microprocessor is informed exactly whether the thread sensor has detected the presence or absence of the weft thread.
- the level threshold selector utilizes the anyway available shot length or web width information and outputs the signal evaluation level threshold that matches the set web width or the diameter set with respect to the weave width. In this way, a falsifying influence is automatically prevented with the diameter adjustment changing background reflection light, because the currently selected level threshold on the diameter-dependent distance between the thread sensor and the weft thread is adjusted so that it between the, resulting in this diameter - and absence signal levels.
- the web width information is transmitted via the information transmission path to the level threshold selector. Based on this information, the level threshold selector knows which of the different level thresholds are needed.
- the information can be transmitted directly from the weaving machine controller, or indirectly via the microprocessor, which may even process the information, if necessary, and issue a corresponding selection command to the level threshold selector, or to the signal level evaluation for the appropriate level control. Threshold procured.
- the selector uses the already existing Webbreiten- or diameter information to adjust the response of the yarn sensor according to and, above all, automatically, so that after performed diameter adjustment of the microprocessor is able to perform the control of the motor.
- the measuring delivery device is automatically adapted to the current weaving width by means of the weft scanning web width information, without the staff needing to do more than to set the specified diameter of the storage body.
- a Transmission distance either from the microprocessor or from the display to the level threshold selector are provided which provides the correct level threshold for the signal level evaluation based on the calculated diameter.
- the level threshold selector is conveniently integrated into the microprocessor which, in any case, performs the signal level evaluation and obtains the web width information from the loom control.
- the level-threshold selector could, however, also be incorporated into the thread sensor or its electronics.
- the level threshold selector includes at least two different level thresholds associated with, for example, the maximum diameter and the minimum diameter or diameter adjustment ranges near the maximum and minimum diameters.
- the level thresholds may be retrievable in a table. It is conceivable not only to call up the threshold values in stages, but also to provide the threshold values steplessly. In the table, the level threshold values are correspondingly assigned to different web widths or different diameters of the memory body, so that depending on the content of the web width information or the value of the calculated diameter, the respectively correct level threshold value is called up or set.
- An in Fig. 1 A yarn-processing system shown schematically has an air-jet weaving machine W and in one of optionally a plurality of thread channels a weft measuring device F, from which an entry device E intermittently inserts weft threads Y of a predetermined length into a shed 5.
- the air-jet weaving machine W includes air nozzles controlled in the feeder E and has a weaving width B of a predetermined dimension shown in solid lines.
- the weaving width B is changeable, as indicated at B '.
- a control panel 6 of the loom is connected to a weaving machine controller MC, which in turn is connected to a measuring feeder controller C via, for example, a communication bus system BS (e.g., CAN system) and / or at least one information transmission line A.
- BS e.g., CAN system
- the measuring delivery device F has a drive motor M for a take-up element 2 in a housing.
- a storage body 3 is mounted stationarily, which is formed, for example, as a rod cage with thin fingers and used to support a formed by winding element 2, consisting of turns thread supply.
- the storage body 3 can be driven with the winding element 2 feed elements (not shown) work to produce a separation between the turns.
- a stop device P is mounted with a stop element which is adjustable between a stop position and a withdrawal position as usual. Further, an opto-electronic thread sensor S is provided, which responds to the reflection light from the windings and signals to the delivery device controller C, the signal level depends on whether a thread winding in a scanning zone is present or absent.
- the measuring supply controller C evaluates the signals and drives the drive motor M to set the thread supply in a certain size (with a certain number of turns, for example up to the scanning zone).
- a manual or mechanical, possibly even remotely controllable, diameter-adjusting device 4 is provided for the storage body 3 . The diameter is marked D.
- the stopping device P is, as usual, from the Meßunter réelle Kunststoffung C, optionally taking into account information transmitted over the link A or otherwise, depending on the weaving cycle, to release the weft Y for withdrawal or to block the trigger.
- the loom MC is taken over the selected cloth width B, B 'informed and provides permanent or clocked information i B to the weaving width B, B' to the measurement feeding device controller C. With this information the measuring feeding device control how many windings per shot calculated for Discharge should be released, and which diameter D is considered optimal and corresponds to an integer multiple of the memory body circumference of the weaving width B.
- Fig. 2 illustrates schematically equipment components of the measuring delivery device F.
- a housing extension of the opto-electronic yarn sensor S is placed so that it scans the weft yarn Y in a predetermined scanning zone Z on the storage body 3. Since in the storage body 3 components form a reflective background, the thread sensor S picks up the reflection light from the weft, vary depending on the set diameter (in Fig. 2 the minimum and maximum diameters D max and D min are indicated) because of the removal of the thread sensor S from the reflective background and the reflective weft yarn, the levels of the signals emitted. This is based on Fig. 3 explained.
- Fig. 3 shows, for example, on the vertical axis in volts (V) signal level of the yarn sensor S, and on the horizontal axis the diameter D in millimeters.
- the first vertical line in the diagram corresponds to the maximum set diameter D max .
- the vertical line shown on the right represents the minimum set diameter D min .
- the maximum signal signal level changes from H i in the absence of the weft to L o in the presence of the weft in the scanning zone Z.
- the absence signal level H i ' is 3V and the presence signal level L o ' is only 2V. Since the measuring delivery device control over the actually set diameter D is not is informed, they could make no more reliable statement about the control of the motor M from the so diminishing with decreasing diameter signal levels.
- different level threshold values S1, S2 are provided for the signal level evaluation for different diameter settings or at least for each one diameter setting range.
- the level threshold S1 which is used at the maximum diameter or at the maximum diameter diameter adjustment range, is in the example H i , 5V, L o 4V at about 4.5 V.
- the other level threshold S2 is at minimum diameter setting or used in the example Hi'3V, LO'3V at about 2.5 V.
- In the signal level evaluation is then only determined whether the signal level is above or below the threshold level S1 or S2 used. If the signal level is above the threshold, it is decided that no weft yarn is present. If it is below the threshold, then decided that the weft is present. Since the respective threshold value is assigned to the set diameter or a certain diameter range, and lies between the received and absent signal levels then obtained, a clear and error-free statement is obtained in each case, with which the metering device controller C the motor M correct can drive.
- the metering machine controller C includes a microprocessor MP connected to the information transfer line A and receiving the web width information i B from the loom control MC. To the microprocessor MP as the stopper P and the yarn sensor S and the motor M is connected. In solid lines in Fig. 2 For example, the maximum diameter D max and the minimum diameter D min are shown in dashed lines.
- an indicator R can be provided, for example in the measuring delivery device controller C, in which the microprocessor MP displays the optimum diameter D calculated on the basis of the web width information i B , and also the number G of weft thread turns to be released for the weaving width per shot.
- an adjustment device T can be provided for thread quality or thread color parameters, which is connected to the microprocessor MP.
- the microprocessor MP feeds, for example, the display R with a diameter information i D.
- a level-threshold selector K is provided which even directly in the microprocessor MP , for example, in whose signal evaluation circuits, could be arranged.
- the at least two different level threshold values S1, S2 are stored in a table Q, for example in the form of voltage values in volts.
- the level threshold selector K is connected either directly (indicated by dashed lines) to the information transmission link A for the web width information i B via an information transmission path (which could be formed in the microprocessor MP) or, as shown, to the information source.
- the level threshold selector K either the Webbreiteninformation i B , or the diameter information i D receives, which is also fed to the display R.
- the information intended for the level threshold selector K could also originate directly from the microprocessor MP, optionally in processed form as select commands.
- the microprocessor MP itself procures the respectively corresponding to the calculated diameter D level threshold S1 or S2.
- a parameter set in the setting device T for thread quality or thread color as color information i c in the microprocessor MP and / or the level threshold selector K are given to consider the reflection property of each processed weft thread material in the signal level evaluation over a suitable level threshold to be able to.
- the information transfer path A 'for the diameter information i D passes either from the microprocessor MP or from the display R to the level threshold selector K, while the information transfer path A "can run from the setting device T to the selector K, either separately, or also via the microprocessor MP.
- the web width information i B is transmitted to the Meßunter Morris-controller C, which calculates the diameter D to be set and the number G of Schussfadenwindungen to be released and optionally in the display R (the display R could also be housed in the control panel 6 of the loom W). If appropriate, a thread parameter is also set on the setting device T and output as color information. From the staff is now either according to experience or by means of the adjustment 4 of the calculated diameter D set. At the same time, either by means of the web width information i B or the diameter information i D , and optionally with the color information i C , a suitable level threshold value S1 or S2 is set or retrieved. In this way, the measuring delivery device F is then automatically adapted to the current weaving width B, B 'with regard to the weft yarn scanning.
- more than two different level threshold values may be stored, or in each case a threshold value analogous to the diameter, i. stepless, retrieved or adjusted.
- the stopper P is placed in the release position, and the weft yarn Y is entered into the shed 5. Shortly before the set number G is reached, the stop is returned to the stop position and the shot is completed. During this time, or possibly only after that, the motor M runs to supplement the thread supply on the storage body 3 again. If the yarn sensor S detects the absence of the weft yarn in the scanning zone Z, then the motor is driven or accelerated. If the presence of the weft yarn in the scanning Z detected, then the motor M is slowed or stopped. The yarn sensor S provides a signal, for example, with a higher absence signal level and, in the presence of the weft yarn, with a lower presence signal level.
- the level threshold S1 or S2 associated with the diameter D or the weaving width B, B ' is in each case between the absence and presence signal levels H i or L o (H i ', L o ') and is taken into account in the signal level evaluation , That is, the microprocessor MP makes the determination that the weft yarn is absent when the signal level is above the threshold level, and the weft yarn is present when the signal level is below the level threshold. With these findings, the control of the motor M is performed.
- the thread sensor S could be designed so that it delivers a higher signal level in the presence of the weft thread than in the absence.
- the thread sensor S could be adjustable in the axial direction of the storage body 3 in the housing extension.
- the stopping device P is expediently adjustable, for example, in the radial direction in order to be set to an optimum position during a change in diameter.
- the level-threshold selector K could also be accommodated in the weaving machine control MC or in the control panel 6, and then via the transmission path A to each of a certain weaving width B, B 'associated level threshold value S1 or S2 to the Meßunter réelle Kunststoffung C, so that it is automatically adjusted during the operation of the measuring feeder F and is able to work error-free regardless of the set diameter D.
- the level threshold S1, S2 respectively adapted to the weaving width could already be processed in the thread sensor S ', which then possibly supplies the presence and absence signals to the microprocessor MP.
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- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Looms (AREA)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE2003134339 DE10334339A1 (de) | 2003-07-28 | 2003-07-28 | Fadenverarbeitungssystem und Verfahren zur Anpassung |
PCT/EP2004/007513 WO2005014454A1 (de) | 2003-07-28 | 2004-07-08 | Fadenverarbeitungssystem und verfahren zur anpassung |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1648808A1 EP1648808A1 (de) | 2006-04-26 |
EP1648808B1 true EP1648808B1 (de) | 2011-07-06 |
Family
ID=34088892
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP04740812A Expired - Lifetime EP1648808B1 (de) | 2003-07-28 | 2004-07-08 | Fadenverarbeitungssystem und verfahren zur anpassung |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP1648808B1 (zh) |
CN (1) | CN100475676C (zh) |
DE (1) | DE10334339A1 (zh) |
WO (1) | WO2005014454A1 (zh) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN103336424A (zh) * | 2013-06-15 | 2013-10-02 | 常州瑞昇科技有限公司 | 整纬机双核控制系统 |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP3140446B1 (en) * | 2014-05-09 | 2019-08-28 | Picanol | Weft feeder device |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS59106543A (ja) * | 1982-12-13 | 1984-06-20 | 日産自動車株式会社 | 断片織機の緯糸供給装置 |
EP0290380B1 (de) * | 1987-04-24 | 1991-08-28 | GebràDer Sulzer Aktiengesellschaft | Schussfadenspeicher mit automatischer Fadenabmessung für Webmaschine |
-
2003
- 2003-07-28 DE DE2003134339 patent/DE10334339A1/de not_active Withdrawn
-
2004
- 2004-07-08 EP EP04740812A patent/EP1648808B1/de not_active Expired - Lifetime
- 2004-07-08 CN CNB2004800216689A patent/CN100475676C/zh not_active Expired - Fee Related
- 2004-07-08 WO PCT/EP2004/007513 patent/WO2005014454A1/de active Application Filing
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN103336424A (zh) * | 2013-06-15 | 2013-10-02 | 常州瑞昇科技有限公司 | 整纬机双核控制系统 |
Also Published As
Publication number | Publication date |
---|---|
EP1648808A1 (de) | 2006-04-26 |
CN100475676C (zh) | 2009-04-08 |
DE10334339A1 (de) | 2005-02-24 |
CN1829649A (zh) | 2006-09-06 |
WO2005014454A1 (de) | 2005-02-17 |
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