EP1943380B1 - Dispositif pour séparer des fils d'une couche de fils, procédé pour faire fonctionner ce dispositif et utilisation du dispositif - Google Patents

Dispositif pour séparer des fils d'une couche de fils, procédé pour faire fonctionner ce dispositif et utilisation du dispositif Download PDF

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Publication number
EP1943380B1
EP1943380B1 EP07720206A EP07720206A EP1943380B1 EP 1943380 B1 EP1943380 B1 EP 1943380B1 EP 07720206 A EP07720206 A EP 07720206A EP 07720206 A EP07720206 A EP 07720206A EP 1943380 B1 EP1943380 B1 EP 1943380B1
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European Patent Office
Prior art keywords
threads
movement
thread layer
thread
separating
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German (de)
English (en)
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EP1943380A1 (fr
Inventor
Paul Metzler
Martin Hunziker
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Staeubli AG
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Staeubli AG
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    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03J—AUXILIARY WEAVING APPARATUS; WEAVERS' TOOLS; SHUTTLES
    • D03J1/00—Auxiliary apparatus combined with or associated with looms
    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03J—AUXILIARY WEAVING APPARATUS; WEAVERS' TOOLS; SHUTTLES
    • D03J1/00—Auxiliary apparatus combined with or associated with looms
    • D03J1/14—Apparatus for threading warp stop-motion droppers, healds, or reeds

Definitions

  • the invention relates to a device for separating a subset of threads from a thread layer with a movable separating means, a method for operating the device and a use of the device.
  • the warp threads of a warp as they are processed on weaving machines, usually arranged more or less close to each other and thus form a mostly flat (warp) thread layer.
  • the size of these gaps are related on the one hand with the thread thickness (diameter) of the threads used, their nature, such as hairiness, and on the other hand with the degree of fineness, the Gravity or the density which the tissue to be produced from the thread layer should have.
  • An elementary method step for handling a thread layer is the separation of threads from the thread layer.
  • this method step a single thread or a subset with a predetermined number of threads is detected in each case and of the remaining threads of Thread layer separated or separated (separated) to allow each individual further treatment of each separated threads (regardless of the other threads of the thread layer).
  • all threads of the thread layer can be sequentially separated and each subjected to a further individual treatment.
  • a typical application involves the preparation of a weaving machine for the production of fabrics, where usually a plurality of (warp) threads must be pulled individually through various openings provided in a harness (e.g., the opening for the thread eye in a heald).
  • a harness e.g., the opening for the thread eye in a heald.
  • this process is repeated until all Threads of the thread layer are processed.
  • Another typical application relates, for example, to knotting machines whose task consists in linking threads of a first thread layer to threads of a second thread layer (for example by knotting) in order to join the first thread layer to the second thread layer.
  • a knitting machine usually separates one thread at the edge of the first thread layer and a thread at the edge of the second thread layer, links one end of the one separated thread to one end of the other separated thread and repeats this process until each one Thread of the first thread layer is connected to a thread of the second thread layer.
  • an essential requirement is precisely to control the number of threads that are separated in a single step: Should the number of threads separated in a single operation differ from a predetermined target number, then In the following work steps, uncontrolled irregularities may occur, which may lead to reduced quality of the products to be manufactured and possibly to unusable products.
  • an apparatus for separating a single thread from a thread layer by means of a movable separating means is known.
  • the separating means of this device is designed as a so-called dividing needle, which has a needle point and a notch arranged on a side flank of the needle point.
  • the needle tip is brought into contact with the thread to be separated 'and moved in its longitudinal direction until the thread to be separated is detected by the notch, wherein the Abteilnadel in the notch at least partially in a gap is introduced between the thread to be separated and an adjacent thread.
  • the detected by the notch thread is separated from the other threads of the thread layer (separated or divided).
  • the shape of the notch must be adjusted within close tolerances to the cross-sectional shape of the thread to be separated. Otherwise, there is a risk that either no thread from the respective notch is detected and separated or more Threads are detected and separated. Accordingly, in order to be able to process threads of different thicknesses, the device must be equipped with different dividing needles, which may need to be replaced if threads of different diameters are to be processed. Replacing the compartment needles is usually laborious.
  • the present invention has for its object to avoid the disadvantages mentioned and to provide a device for separating a subset of threads from a thread layer with a movable separating agent, which simplifies the handling of threads with different thread sizes. Furthermore, a method of operating the device and uses of the device should be specified.
  • the device according to the invention for separating a subset of threads from a thread layer comprises a movable separating means, a moving device for moving the separating means relative to the thread layer, a control device for controlling the moving device and a recognition device for detecting threads.
  • the thread layer is formed from a plurality of juxtaposed threads and the subset consists of one or more arranged on one edge of the thread layer threads of the thread layer, that the detection device allows the detection of a reference position with respect to the thread layer and that the movement device is controllable such that the separating means (by moving the separating means and / or the thread layer) can be brought to a working position with respect to the thread layer and a Separierterrorism, in which the separating means is at least partially inserted between two adjacent threads run.
  • At least one relative coordinate of the working position with respect to the reference position is a variable parameter of the control device and at least one value for this relative coordinate of the control device is available.
  • a single separating agent is used to separate threads.
  • the separating means In order to separate one thread with a predetermined (arbitrarily large) thread diameter, only one working position of the separating means with respect to a predetermined reference position has to be suitably selected, the separating means is optionally brought to this working position and then the separating movement of the separating means is carried out.
  • the relative spatial position of the respective working position with respect to the reference position can each be varied in a predetermined frame and be suitably selected before separation, depending on the diameter of the respective threads to be separated.
  • a value for the relative coordinate of the working position can be provided, the respectively provided value of the control device for controlling the movement device can be made available and the movement device can be controlled in such a way that the separating means is optionally moved to the working position corresponding to the provided value, and performs the Separierzi.
  • the relative coordinate of the working position is a variable parameter of the control device
  • different working positions with respect to a predetermined reference position can be controlled by suitable specification of the respective relative coordinates, thereby separating threads with different thread thicknesses, each with the same separating means. An exchange of the separating agent can therefore be omitted.
  • any spatial coordinate is suitable, which 'defines the spatial position of the thread layer or an edge of the thread layer or the respective threads to be separated.
  • a reference position for example, a specific location may be provided at an edge of the thread layer or at a certain thread of the thread layer or at a predetermined distance from the thread layer or to a particular thread of the thread layer.
  • the respective reference position is determined in each case according to a predetermined criterion and then a relative coordinate is determined which defines the working position of the separating means with respect to the reference position.
  • relative coordinate is understood to be any information which characterizes the position of the working position relative to the reference position. Depending on the number of degrees of freedom that have movements of the separating agent can, it may also be appropriate to specify the respective working position by several relative coordinates.
  • the detection device only has to detect a reference position with respect to the thread layer by metrological means within predetermined tolerances. Since the respective working position is determined by specifying one or more relative coordinates relative to the reference position, respectively, it is not necessary for the recognition device to be able to recognize the position on the thread layer at which the separating agent must strike the thread layer to reliably separate a given number of threads without damage to the threads (ie, the recognition device need not be designed to directly detect the respective working position).
  • the recognition device need not necessarily be able to distinguish adjacent threads within the thread layer.
  • the latter therefore simplifies the handling of thread layers in which threads lie side by side without gaps or at a small distance, and / or the handling of adjacent threads, which are difficult to distinguish for other reasons, for example threads of the same color, strong hairiness or lint and / or small diameter.
  • a distance between the working position and the reference position is selected as the relative coordinate. This way of specifying the working position can be achieved with simple means and is particularly well suited, for example, if the Movement device moves the separating exclusively with linear (linear) movements to the respective working position.
  • control device is designed such that the value for the relative coordinate of the control device as a function of a thread thickness of at least one of the threads and / or as a function of the mean value of the thread strengths of a plurality of threads and / or as a function of a predetermined number of separating threads can be determined.
  • the control device is given values for the respective thread thickness or for the number of threads to be separated.
  • Another embodiment comprises a measuring device for determining the respective thread thickness and / or the mean value of the respective thread thickness.
  • the device according to the invention is capable of automatically determining the relative coordinate of the respective working position for each thread layer to be processed. This measure increases the degree of automation and simplifies the operation of the device.
  • a further embodiment additionally comprises a monitoring device for monitoring the number of threads which have been separated from the thread layer after the separation movement has been carried out.
  • the monitoring device makes it possible to determine whether at least one thread has been separated and, if so, whether, if appropriate, a plurality of threads, for example a double thread (ie two threads) adjacent threads) were separated.
  • the recognition device comprises a device for the contactless detection of threads.
  • the mechanical stress of the threads is kept low, unwanted side effects of mechanical stresses (for example, wear and tear of threads) are reduced.
  • Non-contact detection of threads can be realized for example by optical means.
  • An embodiment of the recognition device comprises, for example, a first optical system for producing a first image of the threads, a first light-sensitive one Detector for capturing the first image and an image processing system.
  • the image processing system enables evaluation of signals of the first light-sensitive detector and / or processing of the first image.
  • the image processing system serves, for example, a determination of the respective reference position.
  • the image processing system can also be used to determine or estimate the number of filaments that have actually been separated, optionally, after performing the separation movement.
  • images of the threads can be detected with the first optical system in each case before carrying out the separating movement and after carrying out the separating movement. By comparing the images, it can be checked whether at least one thread has been separated after the separation movement has been carried out or not.
  • this evaluation also enables a realization of the function of the above-mentioned monitoring device.
  • the reliability of this evaluation can be limited if several separated threads are superimposed in such a way (in the direction of the optical imaging of the optical system) that they can not be distinguished by evaluating the images with the aid of the image processing system. In this case, it may not be possible to distinguish whether a single thread has been separated or several threads (for example a double thread) have been separated.
  • An embodiment variant improved in comparison to the above-mentioned recognition device comprises - in addition to the first optical system and the first light-sensitive detector - a second optical one System for generating a second image of the threads and a second light-sensitive detector for detecting the second image, wherein the first and the second image represent the respective threads from different perspectives and an image processing system is provided, which allows an evaluation of the two images.
  • a comparison of the first and the second image provides information about the instantaneous arrangement of the threads in three spatial dimensions (provided the two images represent the threads at the same time).
  • This (quasi) three-dimensional representation of the threads offers the advantage that a recognition of double threads is facilitated. In this way, the number of threads actually separated in performing the separating movement can be determined with increased reliability. Accordingly, this embodiment also represents a realization of the function of the above-mentioned monitoring device.
  • the devices according to the invention can be used, for example, in a textile machine, in particular in a knotting machine or in a drawing-in machine or in a cross-reading machine, for separating threads.
  • Fig. 1 shows (schematically) an apparatus 1 for separating a subset of threads from a thread layer.
  • the device 1 is ready for processing a thread layer 5.
  • the thread layer 5 consists of a plurality of threads which are arranged parallel to each other within a plane (which threads may optionally be held by conventional means).
  • the direction of the longitudinal extent of the threads is perpendicular to the plane of the Fig. 1 , The threads are each shown in a cross section.
  • the device 1 comprises a base part 2 and an upper part 3 arranged on the base part 2.
  • the base part 2 is arranged stationary.
  • the upper part 3 is movable relative to the base part 2 in order to be able to position the upper part 3 relative to the thread layer 5.
  • the device 1 further comprises a drive 4 for positioning the upper part 3 with respect to the base part 2 or the thread layer 5.
  • the upper part 3 is in particular parallel to the thread layer 5 and perpendicular to the respective threads of the thread layer 5 forward and backward movable, as in Fig. 1 is indicated by a double arrow designated 4 '.
  • the movement device 15 and / or the drive 4 realize (considered individually or in conjunction with one another) a movement device for moving the separating means 10 relative to the thread layer 5.
  • a control device 20 is further housed.
  • the control device 20 is u. a. for controlling the drive 4, the movement device 15 and the recognition device 25 and for this purpose is designed to communicate with the drive 4 via a connection 20.1 and with the movement device 15 via a connection 20.2 and with the recognition device 25 via a connection 20.3 ,
  • the control device is preferably realized by electronic means.
  • the connections 20.1, 20.2 and 20.3 are communication connections of conventional type and accordingly with different technologies feasible (casually over connecting lines or wireless).
  • the movement device 15 comprises a movable, straight arm 16, at one end of which the separating means 10 is fastened.
  • the movement device 15 permits movements of the separating means 10 with at least two degrees of freedom (hereinafter referred to as "degrees of freedom of movement").
  • the movement device is designed in such a way that the arm 16-controlled by the control device 20-can be moved forwards or backwards in its longitudinal direction (in FIG Framework of a first degree of freedom of movement, which in Fig. 1-6 each indicated by an arrow or double arrow 17) and on the other hand is rotatable about its longitudinal direction (in the context of a second degree of freedom of movement, the in Fig. 1-6 each indicated by an arrow or double arrow 18).
  • the movement device 15 has - for the realization of the first degree of freedom of movement - a (not daroise in the figures) linear guide for the arm 16 and the separating means 10 and - to realize the second degree of freedom - a (not shown in the figures) pivot bearing, a Rotation of the arm 16 and the separating means 10 about an axis of rotation of the pivot bearing allows on.
  • the image processing system 40 ' is controlled by the control device 20 and designed for this purpose to exchange corresponding control signals via the connection 20.3 with the control device 20.
  • the first camera 30 is electronically controlled and connected via a connection 40.1 to the image processing system 40 in order to exchange control signals and signals of the first light-sensitive detector 30.4 or data representing the first image with the image processing system 40.
  • the second camera 35 is electronically controlled and connected via a connection 40.2 to the image processing system 40 to control signals and signals of the second light-sensitive detector 35.4 or data representing the second image to exchange with the image processing system 40.
  • the first optical system 30.1 enables the visual inspection of the thread layer 5 or the surroundings of the thread layer 5 within a solid angle 30.3 (see FIG Fig. 2-6 ) in the vicinity of the optical axis 30.2, while the second optical system 35.1, the visual inspection of the thread layer 5 and the vicinity of the thread layer 5 within a solid angle 35.3 (see Fig. 2-6 ) in the vicinity of the optical axis 35.2.
  • the optical axes 30.2 and 35.2 are not parallel, they overlap rather at an angle that could be selected in principle in an angular range between 0 ° and 180 °, in the present example contributes about 45 °.
  • the respective perspectives, from which the first image and the second image each show the thread layer 5, are accordingly different.
  • an illumination of the thread layer 5 by means of a light source 23 for illuminating the thread layer 5 on the side facing away from the cameras 30 and 35 (ie for inspection with transmitted light) and a light source 24 for illuminating the thread layer 5 on the side facing the cameras 30 and 35 (ie for inspection with incident light) (the light emanating from the light source 24 is in Fig. 1 , indicated by an arrow 24 ').
  • the light sources 23 and 24 are each attached to the upper part 3 and aligned with the thread layer 5.
  • the light source 23 is used primarily for the detection of double threads or a reference position, at the edge of the thread layer 5, the light source 24 for the recognition of colors.
  • the optical axis 30.2 of the first optical system 30.1 is oriented perpendicular to the plane which spans the thread layer 5.
  • This alignment of the optical axis 30.2 is arbitrary, but useful in this context, since the upper part 3 is movable parallel to the thread layer 5 and under the present conditions, the positioning of the upper part 3 with respect to the thread layer 5 and the sequence of a separation of threads relatively simple ( ie with relatively little effort) can be controlled exclusively with the help of the first camera 30 and the first optical system 30.1.
  • the device 1 is intended to a predetermined number of threads from the thread layer 5 at an edge 5 '(see Fig. 1-4 ) of the thread layer 5 to be separated by means of the separating agent 10.
  • a reference position with respect to the thread layer 5 is first defined prior to separation, and a working position of the separating means 10 with respect to the respective reference position is determined.
  • the respective positioning of the upper part 3 with respect to the thread layer 5 can be controlled by means of the first camera 30: the respective one of the first optical System 30.1 first image of the thread layer 5 is analyzed under control of the control device 20 by the image processing system 40 to determine if the top is already positioned as desired so that the optical axis 30.2 forms the thread layer 5 at the edge 5 ' Thread 5.1 tangent; otherwise, the control device 20 controls the drive 4 such that the upper part 3 is brought into the desired position.
  • the upper part 3 can be positioned so reproducibly with respect to the thread layer 5.
  • the point at which the optical axis 30.2 tangles the thread layer 5 on the edge 5 'or on the thread 5.1 defines a reference position R on the thread layer 5 with respect to which the respective spatial position of the separating means 10 can be determined.
  • the reference position R is therefore recognized by the recognition device 25 (as previously described by an evaluation of the first image with the aid of the image processing system 40).
  • the reference position R it is possible to dispense with positioning the upper part 3 so that the optical axis 30.2 touches the thread layer 5 at the edge 5 '. Only the spatial arrangement of the thread layer 5 relative to the optical system 30.1 or to the optical axis 30.2 is detected by measurement.
  • a reference position R for example, the point on the thread layer 5 serve, which has the smallest distance from the optical axis 30.2.
  • This reference position R can be determined by an evaluation of the first image of the thread layer 5 produced by the first optical system 30.1 (preferably with transmitted light) with the aid of the image processing system 40. This can with an accuracy, which is determined by the spatial resolution of the first optical system 30.1, the first light-sensitive detector 30.4 and the image processing system 40.
  • the reference position R can be characterized, for example, by specifying its distance from the optical axis 30.2 or an indication of corresponding spatial coordinates. In this case, it is not necessary to position the upper part 3 with great accuracy relative to the thread layer 5 or to arrange or align the optical axis 30.2 precisely relative to the thread layer 5 before each separation movement is carried out (it is sufficient that the reference position R or an environment the reference position R is detected by the first optical system 30.1 and the image processing system 40, respectively, and the reference position is determined with the desired accuracy).
  • a working position A of the separating means 10 is specified by specifying a relative coordinate with respect to the reference position R:
  • the relative distance is expediently the distance ⁇ between the edge 5 'and the working position A.
  • the respective distance ⁇ is realized in each case by a suitable positioning of the arm 16, if necessary by a movement of the arm 16 in the longitudinal direction of the arm 16 (ie in the direction of the arrow or double arrow 17 in FIG Fig. 1-6 ).
  • the respective working position A is determined so that the separating means 10 is stirred during a rotation of the arm 16 about its longitudinal direction (ie in the direction of the arrow or double arrow 18) between the respective thread to be separated and an adjacent thread.
  • the separating means 10 and the arm 16 are shown in a working position A, which is suitable as a starting position for a separation of a single thread, ie the thread 5.1, (the Separating means 10 and the arm 16 are shown in dashed lines in the corresponding position).
  • the respective position of the separating means 10 relative to the upper part 3 or relative to the optical axis 30.2 of the control device 20 must be known or made known.
  • the data required for determining the position of the separating means 10 can be made available to the control device 20 during system initialization or system configuration (for example when the device 1 is put into operation).
  • Fig. 2 shows the device 1 in a state that can serve as a starting point for carrying out the method for separating a thread at the edge 5 '.
  • the upper part 3 is positioned under the control of the control device 20 such that the optical axis 30.2 approximately touches the edge 5 ', wherein the distance between the edge 5' and the optical axis 30.2 falls below a predetermined dimension.
  • the arrangement of the upper part 3 with respect to the thread layer 5 is verified by means of the recognition device 25 (as described above).
  • the point at the edge 5 'of the thread layer 5 which has the smallest distance to the optical axis 30. 2 is regarded as the reference position R.
  • the reference position R is recognized by the recognition device 25 and is thus for set the further course of the procedure.
  • the separating agent 10 has in the present example - as the Figures 2-6 is to be seen - the shape of a pointed wedge and is attached to one end of the arm 16 such that a pointed end of the separating means 10 at the periphery of the arm 16 projects radially.
  • the position of the arm 16 and thus the position of the separating means 10 are changed, taking advantage of the above two degrees of freedom of movement of the moving device 15 and the arm 16, respectively: (i) the first degree of freedom of movement to control the position of the separating means 10 in the longitudinal direction of the Arms 16 (ie in the direction of the arrows 17), and (ii) the second degree of freedom to rotate the arm 16 and the separating means 10 about the longitudinal direction of the arm 16 (ie in the direction of arrows 18) and thereby the angular position of the separating means 10 with respect to the axis of rotation to change.
  • the separating means 10 is removed at a predetermined starting position from the edge 5 'of the thread layer 5 and arranged at a distance from the reference position R.
  • the coordinates of the respective position of the separating means 10 are transmitted from the movement device 15 via the connection 20.2 to the control device 20.
  • the Fig. 3 shows the separating means 10 in a working position A.
  • the separating agent 10 was (compared to the situation according to FIG Fig. 2 ) is moved in the direction of the arrow 17 (first degree of freedom of movement) and brought into a position in which the pointed end of the separating means 10 is arranged above the thread layer 5 and from which the tip end of the separating means 10 can be moved by rotation of the arm 16 about its longitudinal direction (second degree of freedom of movement) between the thread 5.1 and the adjacent thread (Separierterrorism).
  • a corresponding value for the relative coordinate ⁇ (distance between the working position A from the reference position R and from the edge 5 ') is provided and made available to the control device 20 for controlling the moving device 15. Accordingly, the control device 20 commands the movement device 15 to move the separating means 10 out of the starting position Fig. 2 to move to the working position A.
  • the Fig. 4 shows the separating means 10 after the separating means 10 by a corresponding control of the movement device 15 (in comparison to the situation Fig. 3
  • the arm 16 was rotated in the direction of the arrow 18 about its longitudinal direction (second degree of freedom of movement), wherein the pointed end of the separating means 10 between the thread 5.1 at the edge 5 'of the thread layer 5 and the adjacent thread was guided.
  • the thread 5.1 is separated (separated) after this separating movement by the separating means 10 from the adjacent thread.
  • the device 1 is equipped with a tensioning device 7, the threads of the thread layer 5 in the vicinity of the edge 5 'before separating and / or at least in the initial phase of the separation under defined conditions aligns or keeps aligned.
  • the tensioning device 7 comprises two supporting elements 8 which are arranged below the thread layer 5 and have on their upper sides in each case a level bearing surface 8.1 for the thread layer 5, and two movable arms 9.1 and 9.2.
  • the support members 8 are fixed relative to the upper part 3 and parallel to the thread layer, 5 arranged such that the threads of the thread layer 5 lie on the respective bearing surfaces 8.1 of the support members 8.
  • the movable arms 9.1 and 9.2 can be moved within a plane that is perpendicular to the thread layer 5 and perpendicular to the threads of the thread layer 5, relative to the thread layer 5 and relative to the bearing surfaces 8.1, wherein the movable arm 9.1 below the thread layer 5 and the movable arm 9..2 is arranged above the thread layer.
  • the two arms 9.1 and 9.2 are aligned approximately horizontally and arranged so close to each other that the threads of the thread layer 5 are deflected by the arms 9.1 and 9.2.
  • the threads of the thread layer 5 can be additionally set under an increased tension by the thread layer 5 is pressed by a suitable positioning of the arms 9.1 and 9.2 down. This ensures that the thread layer 5 is pressed with an increased contact force on the support surfaces 8.1 (see Fig. 2-4 ).
  • the measures mentioned cause the threads-if they are deflected by the arms 9.1 and 9.2-to lie next to one another within a single layer and to be aligned parallel to one another. In this way it can be ensured that the threads are not twisted together in their longitudinal direction or are not stacked perpendicular to the horizontal plane when the separation is performed. The separation can thus be carried out under defined, reproducible conditions become.
  • the Fig. 5 shows the next step of the method: Under the control of the control device 20, the movable arms 9.1 and 9.2 are moved up and down in opposite directions relative to each other (as in FIG Fig. 5 indicated by corresponding arrows) until the arms 9.1 and 9.2 are no longer in contact with the thread layer 5. Subsequently, the movement device 15 is driven in such a way that the arm 16 is moved away in its longitudinal direction (first degree of freedom of movement) in the direction of the arrow 17 from the thread layer 5.
  • the thread is 5.1
  • the thread 5.1 in accordance with the situations Fig. 2-4 has formed the 'edge 5' of the thread layer 5, held by the separating means 10 and also moved in the direction of the arrow 17. This creates an in Fig. 5 clearly visible gap between the thread 5.1 and the remaining threads of the thread layer 5: The thread 5.1 is separated over its entire length from the remaining threads of the thread layer 5.
  • the thread 5.1 is now in a "test position" P (FIG. Fig. 5 ).
  • the thread 5.1 initially remains for a predetermined period of time in the test position P. During this period, it is examined whether the Separierterrorism in the situation according to Fig. 4 has led to the desired result (ie, whether in this case a single thread has been separated at the edge of the thread layer 5).
  • This examination is carried out with the aid of the first camera 30 in conjunction with the image processing system 40 and optionally additionally with the aid of the second camera 35.
  • a first image of the immediate vicinity of the separating means 10 is first generated with the first optical system 30.1 of the first camera 30 and evaluated with the aid of the image processing system 40.
  • the evaluation gives (as explained above) reliable information about whether at least one thread was separated.
  • a second image of the immediate vicinity of the separating means 10 can be generated with the aid of the second optical system 35.1 of the second camera 35 and evaluated with the aid of the image processing system 40.
  • the first and second images show the surroundings of the separating means 10 from two different perspectives. Consequently, by comparing the first and the second image with the aid of the image processing system 40, the exact number of filaments that occur in the execution of the Separierschul Fig. 4 were determined (as explained above).
  • the abovementioned method steps can be applied correspondingly to the remaining threads of the thread layer 5 until all the threads have been separated one after the other.
  • the new coordinates of the reference position R are determined after each separation of a thread and the new coordinates of the working position A, which is to occupy the separating means 10 for separating the next thread, determined.
  • the control device 20 constantly monitors the spatial position of the thread layer 5 and the respective reference position R with respect to the optical. Axis 30.2. If the distance of the edge of the thread layer 5 or the reference position R from the optical axis 30.2 exceeds a predetermined upper limit, the control device causes by means of appropriate, to be executed by the drive 4 control commands that the upper part 3 is positioned relative to the thread layer 5 such that the Edge 5 'of the thread layer 5 lies on the first image in a predetermined region in the vicinity of the optical axis 30.2. The named area is selected so that the separation of a predetermined minimum number of threads with the camera 30 can be monitored without moving the upper part 3 again relative to the thread layer 5.
  • the distance ⁇ of the working position A from the reference position R has to be chosen to be approximately ⁇ n D, where D is the diameter of the respective threads (assuming that all filaments of the thread layer have the same diameter D).
  • D is the diameter of the respective threads (assuming that all filaments of the thread layer have the same diameter D).
  • the detection device 25 could alternatively (instead of the cameras 30 or 35) also be equipped with other means for non-contact detection of threads in order to define the respective reference position and the number of threads separated after performing a separating movement with the separating means determine:
  • Such devices can be realized, for example, with ultrasonic transmitters and ultrasonic receivers, the thread layer 5 and the separated threads are detected by ultrasound.
  • the detection of the threads can also be made with touch-sensitive sensors (for example, piezoelectric sensors or other force sensors).

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Sewing Machines And Sewing (AREA)
  • Investigating Materials By The Use Of Optical Means Adapted For Particular Applications (AREA)
  • Length Measuring Devices By Optical Means (AREA)
  • Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)
  • Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)
  • Control Of Position Or Direction (AREA)
  • Spinning Or Twisting Of Yarns (AREA)
  • Treatment Of Fiber Materials (AREA)
  • Auxiliary Weaving Apparatuses, Weavers' Tools, And Shuttles (AREA)

Claims (18)

  1. Dispositif (1) de séparation d'une quantité partielle de fils (5.1) d'une couche de fils (5) à l'aide d'un moyen séparateur mobile (10),
    la couche de fils (5) étant constituée d'une multitude de fils juxtaposés et la quantité partielle consistant en un ou des plusieurs fils (5.1) disposés sur un bord (5') de la couche de fils,
    comportant un dispositif de déplacement (15, 4) pour déplacer le moyen séparateur (10) par rapport à la couche de fils (5),
    un dispositif de commande (20) pour commander le dispositif de déplacement (15, 4)
    et un dispositif de détection (25) pour détecter les fils,
    le dispositif de détection (25) permettant la détection d'une position de référence (R) par rapport à la couche de fils (5) et
    le dispositif de déplacement (15, 4) pouvant être commandé de manière à ce que le moyen séparateur (10) puisse être amené à une position de travail (A) par rapport à la couche de fils (5) et puisse exécuter un mouvement de séparation (18) lors duquel le moyen séparateur (10) peut être introduit du moins partiellement entre deux fils voisins,
    caractérisé en ce que
    au moins une coordonnée relative (Δ) de la position de travail (A) par rapport à la position de référence (R) est un paramètre variable du dispositif de commande (20) et qu'au moins une valeur de cette coordonnée relative (Δ) du dispositif de commande (20) peut être fournie au dispositif de commande (20).
  2. Dispositif selon la revendication 1, caractérisé en ce qu'il est prévu comme position de référence (R) un endroit situé au bord (5') de la couche de fils (5) ou au niveau d'un fil (5.1) de la couche de fils (5) ou à distance prédéfinie de la couche de fils (5).
  3. Dispositif selon une des revendications 1 ou 2, caractérisé en ce que la coordonnée relative est une distance (Δ) entre la position de travail (A) et la position de référence (R).
  4. Dispositif selon une des revendications 1 à 3, caractérisé en ce que la valeur de la coordonnée relative (Δ) peut être prédéfinie en tant que fonction d'une épaisseur de fil d'au moins un des fils et/ou en tant que fonction de la valeur moyenne des épaisseurs de fils d'une pluralité des fils de la couche de fils (5) et/ou en tant que fonction d'un nombre prédéfini de fils à séparer.
  5. Dispositif selon une des revendications 1 à 4, caractérisé en ce qu'il est prévu un système de contrôle pour contrôler le nombre de fils (5.1) qui ont été séparés après une exécution du mouvement de séparation de la couche de fils (5).
  6. Dispositif selon une des revendications 1 à 5, caractérisé en ce que le dispositif de détection (25) comprend un système de détection pour la détection sans contact des fils (5.1).
  7. Dispositif selon la revendication 6, caractérisé en ce que le dispositif comprend un premier système optique (30.1) pour générer une première image des fils, un premier détecteur photosensible (30.4) pour détecter la première image et un système de traitement d'images (40) pour déterminer la position de référence (R) à partir de signaux du premier détecteur photosensible (30.4).
  8. Dispositif selon la revendication 7, caractérisé en ce que le dispositif comprend un second système optique (35.1) pour générer une seconde image des fils, un second détecteur photosensible (35.4) pour détecter la seconde image, les deux images représentant les fils respectifs depuis différentes perspectives (30.2, 35.2) et un système de traitement d'images (40) pour déterminer le nombre de fils séparé à partir de signaux des détecteurs photosensibles respectifs (30.4, 35.4).
  9. Dispositif selon une des revendications 1 à 8, caractérisé en ce que le dispositif de déplacement (15, 4) présente un premier degré de liberté de mouvement (17) qui permet un mouvement du moyen séparateur (10) par rapport à la couche de fils (5) vers la position de travail (A) et un second degré de liberté de mouvement (18) qui permet d'exécuter le mouvement de séparation.
  10. Dispositif selon la revendication 9, caractérisé en ce que le dispositif de déplacement (15),
    - pour réaliser le premier degré de liberté de mouvement (17),
    - présente un guide linéaire pour le moyen séparateur (10) et - pour réaliser le second degré de liberté de mouvement (18) - présente un palier rotatif qui permet une rotation du moyen séparateur (10) autour d'un axe de rotation du palier rotatif.
  11. Dispositif selon la revendication 4, caractérisé en ce qu'il est prévu un dispositif de mesure pour déterminer l'épaisseur respective des fils et/ou la valeur moyenne des épaisseurs respectives des fils.
  12. Procédé d'utilisation d'un dispositif (1) de séparation d'une quantité partielle de fils (5.1) d'une couche de fils (5) à l'aide d'un moyen séparateur mobile (10) selon une des revendications 1 à 11,
    la couche de fils (5) étant constituée d'une multitude de fils juxtaposés et la quantité partielle consistant en un ou des plusieurs fils disposés sur un bord (5') de la couche de fils (5),
    ce dispositif (1) comportant :
    un dispositif de déplacement (15, 4) pour déplacer le moyen séparateur (10) par rapport à la couche de fils (5),
    un dispositif de commande (20) pour commander le dispositif de déplacement (15, 4),
    un dispositif de détection (25) pour détecter les fils (5.1),
    le dispositif de détection (25) permettant la détection d'une position de référence (R) par rapport à la couche de fils (5) et
    le dispositif de déplacement (15, 4) pouvant être commandé de manière à ce que le moyen séparateur (10) puisse être amené à une position de travail (A) par rapport à la couche de fils (5) et puisse exécuter un mouvement de séparation (18) lors duquel le moyen séparateur (10) peut être introduit du moins partiellement entre deux fils voisins,
    et au moins une coordonnée relative (Δ) de la position de travail (A) par rapport à la position de référence (R) étant un paramètre variable du dispositif de commande (20),
    lequel procédé comprenant les étapes suivante
    détection d'une position de référence (R) par rapport à la couche de fils (5),
    fourniture d'une valeur de coordonnée relative (Δ) de la position de travail (A), la valeur respectivement fournie étant mise à disposition du dispositif de commande (20) pour commander le dispositif de déplacement (15),
    commande du dispositif de déplacement (15) de manière à ce que le moyen séparateur (10) prenne la position de travail (A) correspondant à la valeur fournie et exécute le mouvement de séparation (18).
  13. Procédé selon la revendication 12, dans lequel on choisit comme coordonnée relative une distance (Δ) entre la position de travail (A) et la position de référence (R) et qu'une valeur de cette distance est mise à disposition du dispositif de commande (20) pour commander le dispositif de déplacement (15).
  14. Procédé selon une des revendications 12 ou 13, dans lequel la valeur fournie est déterminée en tant que fonction d'une épaisseur de fil d'au moins un des fils (5.1) et/ou en tant que fonction de la valeur moyenne des épaisseurs de fils d'une pluralité des fils de la couche de fils (5) et/ou en tant que fonction d'un nombre prédéfini de fils à séparer.
  15. Procédé selon la revendication 14, dans lequel l'épaisseur relative des fils ou la valeur moyenne est prédéfinie ou mesurée avant la séparation de la quantité partielle de fils.
  16. Procédé selon la revendication 15, dans lequel, à l'aide d'un système optique (30, 35, 30.1, 35.1), une image d'un ou plusieurs fils (5.1) est générée et l'épaisseur relative des fils ou la valeur moyenne est déterminée par un traitement de l'image.
  17. Procédé selon la revendication 15, dans lequel la coordonnée relative (Δ) est choisie de manière à ce qu'un ou plusieurs fils soient séparés en exécutant le mouvement de séparation (18), qu'après l'exécution du mouvement de séparation (18) le nombre de fils séparés soit déterminé et que l'épaisseur respective des fils ou la valeur moyenne est définie à partir de la coordonnée relative choisie (Δ) et du nombre déterminé de fils séparés.
  18. Procédé selon une des revendications 1 à 11 dans une machine textile, notamment une noueuse ou une enfileuse ou une machine de lisage de croix.
EP07720206A 2006-06-23 2007-06-21 Dispositif pour séparer des fils d'une couche de fils, procédé pour faire fonctionner ce dispositif et utilisation du dispositif Active EP1943380B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP07720206A EP1943380B1 (fr) 2006-06-23 2007-06-21 Dispositif pour séparer des fils d'une couche de fils, procédé pour faire fonctionner ce dispositif et utilisation du dispositif

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
EP06405270A EP1870501A1 (fr) 2006-06-23 2006-06-23 Dispositif de séparation de fils d'une couche de fils, procédé pour opérer le dit dispositif et utilisation du dit dispositif
PCT/CH2007/000309 WO2007147282A1 (fr) 2006-06-23 2007-06-21 Dispositif pour séparer des fils d'une couche de fils, procédé pour faire fonctionner ce dispositif et utilisation du dispositif
EP07720206A EP1943380B1 (fr) 2006-06-23 2007-06-21 Dispositif pour séparer des fils d'une couche de fils, procédé pour faire fonctionner ce dispositif et utilisation du dispositif

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EP1943380A1 EP1943380A1 (fr) 2008-07-16
EP1943380B1 true EP1943380B1 (fr) 2009-05-13

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EP07720206A Active EP1943380B1 (fr) 2006-06-23 2007-06-21 Dispositif pour séparer des fils d'une couche de fils, procédé pour faire fonctionner ce dispositif et utilisation du dispositif

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US (1) US8032995B2 (fr)
EP (2) EP1870501A1 (fr)
JP (1) JP2009541601A (fr)
CN (1) CN101360855B (fr)
AT (1) ATE431449T1 (fr)
BR (1) BRPI0713356B1 (fr)
DE (1) DE502007000728D1 (fr)
ES (1) ES2327292T3 (fr)
PT (1) PT1943380E (fr)
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WO (1) WO2007147282A1 (fr)

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EP2147993A1 (fr) * 2008-07-25 2010-01-27 Stäubli AG Pfäffikon Nouages de chaînes à tisser dotés d'une reconnaissance des paramètres de fils
EP2147992B1 (fr) * 2008-07-25 2012-11-07 Stäubli AG Pfäffikon Machine de passage et procédé de passage des fils de chaîne d'une chaîne à tisser en éléments d'un équipement de tissage
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DE102012016776A1 (de) * 2012-08-24 2014-02-27 GM Global Technology Operations LLC (n. d. Ges. d. Staates Delaware) Verfahren zum Betreiben eines Kraftfahrzeugs und Kraftfahrzeug
EP2881506B1 (fr) * 2013-12-09 2016-09-07 Stäubli Sargans AG Dispositif de séparation de fils
CN103924365B (zh) * 2014-04-21 2015-04-22 深圳市海弘装备技术有限公司 一种用于综丝转移的装置和方法
CN104404699B (zh) * 2014-11-19 2016-04-27 深圳市海弘装备技术有限公司 一种用于纺织行业的快速分线装置
CN106609416B (zh) * 2016-05-12 2018-05-11 黄秋 一种嵌入式接经装置及接经方法
ES2746933T3 (es) * 2016-12-01 2020-03-09 Staeubli Sargans Ag Módulo de separación de hilos con un dispositivo sensor capacitivo
CN108588986B (zh) * 2018-05-15 2020-01-31 深圳市海弘装备技术有限公司 一种勾纱前准备装置和方法
CN109537152A (zh) * 2018-12-07 2019-03-29 福建伟易泰智能科技有限公司 一种纱线自动吸取装置及穿经机
CN109594183B (zh) * 2018-12-07 2021-03-19 福建伟易泰智能科技有限公司 一种纱线自动追踪装置及穿经机
CN109913999B (zh) * 2019-02-27 2021-08-17 深圳市海弘装备技术有限公司 多层纱线分绞机
CN110629373B (zh) * 2019-09-06 2020-11-10 深圳市海弘装备技术有限公司 一种自动调节多层线幕边缘层差的调节机构与方法
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CN101360855B (zh) 2012-11-28
EP1870501A1 (fr) 2007-12-26
BRPI0713356B1 (pt) 2017-03-21
CN101360855A (zh) 2009-02-04
DE502007000728D1 (de) 2009-06-25
ATE431449T1 (de) 2009-05-15
PT1943380E (pt) 2009-08-12
US20100031484A1 (en) 2010-02-11
US8032995B2 (en) 2011-10-11
BRPI0713356A2 (pt) 2012-01-31
JP2009541601A (ja) 2009-11-26
TW200809026A (en) 2008-02-16
EP1943380A1 (fr) 2008-07-16
WO2007147282A1 (fr) 2007-12-27
ES2327292T3 (es) 2009-10-27

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