EP1943380A1 - Vorrichtung zum separieren von fäden aus einer fadenschicht, verfahren zum betreiben der vorrichtung und verwendung der vorrichtung - Google Patents
Vorrichtung zum separieren von fäden aus einer fadenschicht, verfahren zum betreiben der vorrichtung und verwendung der vorrichtungInfo
- Publication number
- EP1943380A1 EP1943380A1 EP07720206A EP07720206A EP1943380A1 EP 1943380 A1 EP1943380 A1 EP 1943380A1 EP 07720206 A EP07720206 A EP 07720206A EP 07720206 A EP07720206 A EP 07720206A EP 1943380 A1 EP1943380 A1 EP 1943380A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- threads
- thread
- movement
- thread layer
- separating
- 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
Classifications
-
- 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
- Device for separating threads from a thread layer Device for separating threads from a thread layer, method for operating the device and use of the device
- 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.
- more or less large gaps are usually formed between adjacent threads of the thread layer, wherein the size of these gaps are related on the one hand to the thread thickness
- Diameter of the threads used, their nature, such as hairiness, and on the other hand with the degree of fineness, the weight or the density, which is to have the fabric to be produced from the thread layer.
- 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 separated one after the other 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 knotting machine usually separates one thread at the edge of the first thread layer and one 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 Uncontrolled irregularities may occur during the following work steps, which may lead to a reduced quality of the products to be manufactured and possibly to unusable products.
- 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.
- a thread on the edge of 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 into a Gap between the thread to be separated and an adjacent thread is introduced.
- 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. Furthermore, the equipment of the device with a variety of Abteilnadeln covering a certain range of thread sizes, expensive.
- 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 for 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 agent optionally brought to this working position and then carried out the Separier Gay the separating.
- 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
- various 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 predefined criterion, and subsequently a relative coordinate is determined which defines the working position of the separating means with respect to the reference position.
- 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 in each case relative to the reference position, 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 the given number of threads without damaging the threads (ie the recognition device need not be designed to directly recognize 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 rectilinear (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 thicknesses or for the number of threads to be separated.
- a further embodiment comprises a measuring device for determining the respective thread thickness and / or the mean value of the respective thread thicknesses.
- the device according to the invention is capable of automatically determining the relative coordinates 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.
- Detection device a device for non-contact
- Detecting threads includes. As a result, the mechanical stress of the threads is kept low, undesirable
- 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 threads that have actually been separated, optionally, after performing the separation movement. For this purpose, 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 A 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, the one
- 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 a device according to the invention for separating threads from a thread layer with a movable separating means, a movement device for moving the separating means relative to the thread layer, a control device for controlling the movement device and a recognition device; Device for detecting threads;
- Fig. 2-6 are each a part of the apparatus according to FIG. 1, wherein the separating means is shown in different positions, which occupies the separating agent when separating threads in succession.
- Fig. 1 shows (schematically) a device 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 extension of the threads is perpendicular to the plane of the drawing of 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 movable forward and backward in particular parallel to the thread layer 5 and perpendicular to the respective threads of the thread layer 5, as shown in FIG. 1 is indicated by a double arrow designated 4 '.
- the upper part 3 is designed as a carrier for a plurality of components, which can be positioned by moving the upper part 3 with respect to the thread layer 5.
- These components include:
- a separating means 10 a moving device 15 for moving the separating means 10 (relative to the upper part 3) and a recognition device 25 for detecting threads of the thread layer 5.
- 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 the conventional type and accordingly can be implemented using different technologies (for example via connection lines or wirelessly).
- 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 Frame of a first degree of freedom of movement, which is indicated in each case by an arrow or double arrow 17 in Fig. 1-6) and on the other hand about its longitudinal direction is rotatable (in the context of a second degree of freedom of movement, in each case by an arrow or Double arrow 18 is indicated).
- the movement device 15 has - for the realization of the first degree of freedom of movement - (not shown 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 recognition device 25 is designed to recognize threads of the thread layer 5 and comprises for this purpose:
- a first camera 30 having a first optical system 30.1 for producing a first image of the threads of the Thread layer 5 and a first light-sensitive detector 30.4 for detecting the first image, this first image showing the thread layer 5 or a part of the thread layer 5 from a first perspective along an optical axis 30.2 of the first optical system 30.1,
- 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 FIGS. 2-6) in the vicinity of the optical axis 30.2, while the second optical system 35.1 enables the visual inspection of the thread layer 5 or the surroundings of the thread layer 5 within a solid angle 35.3 (see FIGS. 2-6) in the vicinity of the optical axis 35.2.
- the optical axes 30.2 and 35.2 are not parallel, they rather overlap in one
- Angle which in principle could be chosen arbitrarily in an angle range between 0 ° and 180 °, in the present
- Example is 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 indicated in FIG. 1 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 orientation 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 relative 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 separate a predetermined number of threads from the thread layer 5 at an edge 5 '(see FIGS. 1-4) of the thread layer 5 with the aid of the separating means 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 or the image processing system 40 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. 1-6).
- the respective working position A is determined so that the separating means 10 is introduced 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 which 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 means 10 has in the present example - as can be seen in Figures 2-6 - 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 is changed, taking advantage of the above-mentioned degrees of freedom of movement of the moving device 15 or of the arm 16: (i) the first degree of freedom of movement to change the position of the separating means 10 in the longitudinal direction of the arm 16 (ie, in the direction of the arrows 17), and (ii) the second degree of freedom of movement to rotate the arm 16 and the separating means 10, respectively, about the longitudinal direction of the arm 16 ( ie in the direction of the arrows 18) and thereby change the angular position of the separating means 10 with respect to the axis of rotation.
- Edge 5 'of the thread layer 5 is removed and arranged at a distance from the reference position R.
- the coordinates of the respective position of the separating means 10 (relative to
- FIG. 3 shows the separating means 10 in a working position A.
- the separating means 10 has been moved (in comparison with the situation according to FIG. 2) 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 agent 10 is disposed above the thread layer 5 and from 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 instructs the movement device 15 to move the separating means 10 from the starting position according to FIG. 2 to the working position A.
- FIG. 4 shows the separating means 10 after the separating means 10 has carried out a separating movement by means of a corresponding control of the movement device 15 (in comparison with the situation according to FIG. 3) starting from the working position A:
- the arm 16 has been moved in the direction of the arrow 18 rotated 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 performed.
- 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 tensioning device 7 comprises two supporting elements 8 arranged below the thread layer 5, which each have on their upper sides a flat 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 arranged parallel to the thread layer 5 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 Prior to separation (FIGS. 2 and 3) and / or in the initial phase of separation (FIG. 4), the two arms 9.1 and 9.2 are oriented approximately horizontally and are arranged close to one another such that the threads of the thread layer 5 are separated from the arms 9.1 and 9.2 are deflected.
- 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 pressure on the bearing 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 each other 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 .
- 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 indicated by corresponding arrows in FIG 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 5.1 which has formed the edge 5 'of the thread layer 5 in the situations according to FIGS. 2-4, is held by the separating means 10 and likewise moved in the direction of the arrow 17. This results in a clearly visible in Fig. 5 gap between the thread 5.1 and the other 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. 5) .
- the thread 5.1 initially remains in the test position P during a predetermined period of time During this period, it is examined whether the separating movement in the situation according to FIG desired result (ie 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
- the purpose of the first optical system 30.1 of the first camera 30 is first to generate a first image of the immediate vicinity of the separating means 10 and to evaluate it with the aid of the image processing system 40.
- the evaluation provides (as explained above) reliable information as to 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.
- the arm 16 is moved in the longitudinal direction (first degree of freedom of movement) in the direction of the arrow 17 and, accordingly, the distance between the separated thread 5.1 and the remaining threads of the thread layer 5 by means of the separating means 10 further enlarged.
- the separated thread can be picked up by another, not shown here means for further processing.
- 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 or 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 can be selected in about ⁇ «n D, where D is the diameter of the respective threads (assuming that all threads of the thread layer have the same diameter D).
- D is the diameter of the respective threads (assuming that all threads of the thread layer have the same diameter D).
- the diameter D In order to specify the distance ⁇ to be met precisely, the diameter D must be known as accurately as possible.
- the device 1 offers several possibilities for automatically determining the diameter D of the threads of the thread layer 5 (under control of the control device 20):
- An image of the thread layer 5 can be generated by means of the first camera 30 or the second camera 35 and evaluated by means of the image processing device 40. If individual threads of the thread layer 5 are distinguishable in said image, the thickness of the respective threads can be determined by a corresponding evaluation of the image. The accuracy of this method can be improved if the threads have different color and in the image processing color information is taken into account: The additional color information makes it easier to distinguish different threads with different color from each other. The spatial resolution of the method becomes thereby improved.
- the separating agent 10 can optionally to different working positions A with different
- Separating movement of the separating means 10 causes and in each case with the aid of the detection device 25 (as described above) determines the number n of threads, which are separated during the respective separating movement.
- the mean diameter D of the respective threads can be determined as the quotient ⁇ / n (for n> 0).
- 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)
- Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)
- Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)
- Length Measuring Devices By Optical Means (AREA)
- Investigating Materials By The Use Of Optical Means Adapted For Particular Applications (AREA)
- Treatment Of Fiber Materials (AREA)
- Auxiliary Weaving Apparatuses, Weavers' Tools, And Shuttles (AREA)
- Spinning Or Twisting Of Yarns (AREA)
- Control Of Position Or Direction (AREA)
Description
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Priority Applications (1)
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EP07720206A EP1943380B1 (de) | 2006-06-23 | 2007-06-21 | Vorrichtung zum separieren von fäden aus einer fadenschicht, verfahren zum betreiben der vorrichtung und verwendung der vorrichtung |
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP06405270A EP1870501A1 (de) | 2006-06-23 | 2006-06-23 | Vorrichtung zum Separieren von Fäden aus einer Fadenschicht, Verfahren zum Betreiben der Vorrichtung und Verwendung der Vorrichtung |
EP07720206A EP1943380B1 (de) | 2006-06-23 | 2007-06-21 | Vorrichtung zum separieren von fäden aus einer fadenschicht, verfahren zum betreiben der vorrichtung und verwendung der vorrichtung |
PCT/CH2007/000309 WO2007147282A1 (de) | 2006-06-23 | 2007-06-21 | Vorrichtung zum separieren von fäden aus einer fadenschicht, verfahren zum betreiben der vorrichtung und verwendung der vorrichtung |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1943380A1 true EP1943380A1 (de) | 2008-07-16 |
EP1943380B1 EP1943380B1 (de) | 2009-05-13 |
Family
ID=36972892
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP06405270A Withdrawn EP1870501A1 (de) | 2006-06-23 | 2006-06-23 | Vorrichtung zum Separieren von Fäden aus einer Fadenschicht, Verfahren zum Betreiben der Vorrichtung und Verwendung der Vorrichtung |
EP07720206A Active EP1943380B1 (de) | 2006-06-23 | 2007-06-21 | Vorrichtung zum separieren von fäden aus einer fadenschicht, verfahren zum betreiben der vorrichtung und verwendung der vorrichtung |
Family Applications Before (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP06405270A Withdrawn EP1870501A1 (de) | 2006-06-23 | 2006-06-23 | Vorrichtung zum Separieren von Fäden aus einer Fadenschicht, Verfahren zum Betreiben der Vorrichtung und Verwendung der Vorrichtung |
Country Status (11)
Country | Link |
---|---|
US (1) | US8032995B2 (de) |
EP (2) | EP1870501A1 (de) |
JP (1) | JP2009541601A (de) |
CN (1) | CN101360855B (de) |
AT (1) | ATE431449T1 (de) |
BR (1) | BRPI0713356B1 (de) |
DE (1) | DE502007000728D1 (de) |
ES (1) | ES2327292T3 (de) |
PT (1) | PT1943380E (de) |
TW (1) | TW200809026A (de) |
WO (1) | WO2007147282A1 (de) |
Families Citing this family (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2147992B1 (de) * | 2008-07-25 | 2012-11-07 | Stäubli AG Pfäffikon | Einziehmaschine und Verfahren zum Einziehen von Kettfäden einer Webkette in Elemente eines Webgeschirrs |
EP2147993A1 (de) * | 2008-07-25 | 2010-01-27 | Stäubli AG Pfäffikon | Knüpfen von Webketten mit Erkennung der Garnparameter |
JP4515533B1 (ja) * | 2009-09-16 | 2010-08-04 | 株式会社藤堂製作所 | 自動綾取装置、及び自動綾取方法 |
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 |
ES2600953T3 (es) | 2013-12-09 | 2017-02-13 | Stäubli Sargans Ag | Dispositivo para la separación de hilos |
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 |
EP3330418B1 (de) * | 2016-12-01 | 2019-06-26 | Stäubli Sargans AG | Garntrennmodul mit einer kapazitiven sensorvorrichtung |
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 |
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 |
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 |
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 |
CN113789601B (zh) * | 2021-09-06 | 2022-12-16 | 武汉纺织大学 | 穿综装置 |
Family Cites Families (16)
Publication number | Priority date | Publication date | Assignee | Title |
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US2690606A (en) * | 1952-12-11 | 1954-10-05 | Fleischer Svend Sigur Christie | Method of regulating a thread separating device for separating threads from a warp |
US3136025A (en) * | 1961-10-05 | 1964-06-09 | T D Noone Woven Products Propr | Apparatus for selecting and separating threads of a warp |
CH619011A5 (de) * | 1977-06-24 | 1980-08-29 | Zellweger Uster Ag | |
DE3210920C1 (de) * | 1982-03-25 | 1983-09-29 | Lindauer Dornier Gmbh, 8990 Lindau | Vorrichtung zum Vereinzeln und Bereitstellen von Kettfaeden fuer das Einziehen der Kettfaeden in Weblitzen und Lamellen |
CH668277A5 (de) * | 1985-06-26 | 1988-12-15 | Zellweger Uster Ag | Ueberwachungsvorrichtung fuer doppelfaeden an webkettenknuepfmaschinen. |
JPS62191551A (ja) * | 1986-02-17 | 1987-08-21 | カネボウ株式会社 | リ−ドドロ−イングマシン |
JPS6458682A (en) * | 1987-08-27 | 1989-03-06 | Toppan Printing Co Ltd | Production of self-heating type can pack |
DE8903454U1 (de) * | 1989-03-20 | 1990-07-26 | Hermann Wangner Gmbh & Co Kg, 7410 Reutlingen | Separator für Nahtmaschinen |
JPH0742637B2 (ja) * | 1989-10-25 | 1995-05-10 | シーケーディ株式会社 | 糸分離装置 |
CH680933A5 (de) * | 1990-03-06 | 1992-12-15 | Zellweger Uster Ag | |
CH682576A5 (de) * | 1990-08-20 | 1993-10-15 | Zellweger Uster Ag | Vorrichtung zum Vereinzeln von Lamellen in Kettfadeneinziehmaschinen. |
DE4142356A1 (de) * | 1990-12-28 | 1992-07-02 | Nissan Motor | Einschuss-ueberwachungssystem fuer eine webmaschine |
JPH05287647A (ja) * | 1992-04-06 | 1993-11-02 | Toudou Seisakusho:Kk | 経糸分離装置用の2本糸検出方法とその2本糸検出機構 |
EP0866155B1 (de) * | 1997-03-14 | 2001-11-07 | Benninger AG | Verfahren und Vorrichtung zur Kontrolle der Teilfachbildung an einer Schärmaschine |
PT1383949E (pt) * | 2001-04-25 | 2006-12-29 | Staeubli Ag Pfaeffikon | Dispositivo e método para a separação de fios de uma camada de fios |
WO2003064746A2 (de) * | 2002-01-30 | 2003-08-07 | Stäubli Ag Pfäffikon | Vorrichtung zur separierung von fäden aus einer fadenschicht |
-
2006
- 2006-06-23 EP EP06405270A patent/EP1870501A1/de not_active Withdrawn
-
2007
- 2007-06-20 TW TW096122058A patent/TW200809026A/zh unknown
- 2007-06-21 DE DE502007000728T patent/DE502007000728D1/de active Active
- 2007-06-21 CN CN2007800016370A patent/CN101360855B/zh active Active
- 2007-06-21 EP EP07720206A patent/EP1943380B1/de active Active
- 2007-06-21 JP JP2009515686A patent/JP2009541601A/ja active Pending
- 2007-06-21 BR BRPI0713356A patent/BRPI0713356B1/pt not_active IP Right Cessation
- 2007-06-21 PT PT07720206T patent/PT1943380E/pt unknown
- 2007-06-21 AT AT07720206T patent/ATE431449T1/de not_active IP Right Cessation
- 2007-06-21 US US12/304,319 patent/US8032995B2/en not_active Expired - Fee Related
- 2007-06-21 WO PCT/CH2007/000309 patent/WO2007147282A1/de active Application Filing
- 2007-06-21 ES ES07720206T patent/ES2327292T3/es active Active
Non-Patent Citations (1)
Title |
---|
See references of WO2007147282A1 * |
Also Published As
Publication number | Publication date |
---|---|
US8032995B2 (en) | 2011-10-11 |
BRPI0713356B1 (pt) | 2017-03-21 |
TW200809026A (en) | 2008-02-16 |
CN101360855A (zh) | 2009-02-04 |
DE502007000728D1 (de) | 2009-06-25 |
EP1870501A1 (de) | 2007-12-26 |
PT1943380E (pt) | 2009-08-12 |
WO2007147282A1 (de) | 2007-12-27 |
JP2009541601A (ja) | 2009-11-26 |
EP1943380B1 (de) | 2009-05-13 |
CN101360855B (zh) | 2012-11-28 |
US20100031484A1 (en) | 2010-02-11 |
ES2327292T3 (es) | 2009-10-27 |
ATE431449T1 (de) | 2009-05-15 |
BRPI0713356A2 (pt) | 2012-01-31 |
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