EP3529404B1 - Dispositif de mesure de la tension de chaîne dans une machine à tisser et machine à tisser équipée d'un tel dispositif - Google Patents

Dispositif de mesure de la tension de chaîne dans une machine à tisser et machine à tisser équipée d'un tel dispositif Download PDF

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Publication number
EP3529404B1
EP3529404B1 EP17790740.9A EP17790740A EP3529404B1 EP 3529404 B1 EP3529404 B1 EP 3529404B1 EP 17790740 A EP17790740 A EP 17790740A EP 3529404 B1 EP3529404 B1 EP 3529404B1
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EP
European Patent Office
Prior art keywords
weaving machine
lever
warp
deflecting element
measuring
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Application number
EP17790740.9A
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German (de)
English (en)
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EP3529404A1 (fr
Inventor
Daniel Obermayr
Markus Fiebig
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Lindauer Dornier GmbH
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Lindauer Dornier GmbH
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Publication of EP3529404A1 publication Critical patent/EP3529404A1/fr
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    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
    • D03D49/00—Details or constructional features not specially adapted for looms of a particular type
    • D03D49/04—Control of the tension in warp or cloth
    • D03D49/12—Controlling warp tension by means other than let-off mechanisms
    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
    • D03D49/00—Details or constructional features not specially adapted for looms of a particular type
    • D03D49/04—Control of the tension in warp or cloth
    • D03D49/18—Devices for indicating warp tension

Definitions

  • the present invention relates to a device for measuring the warp tension in a weaving machine with a measuring element which has two ends and is designed as a deflection element, over which the warp threads of the weaving machine can be guided. Furthermore, the device comprises a force measuring device and a lever which is rotatably mounted on a machine frame of the weaving machine about a stationary pivot point and via which the force measuring device can be acted upon by the measuring element.
  • the invention also relates to a corresponding loom with such a device.
  • Warp tension sensors are used in weaving machines in order to maintain a uniform warp tension during the weaving process, which is necessary for a uniform fabric formation and in particular to avoid warp thread breaks.
  • the control or regulation of the warp tension is usually carried out by a correspondingly drivable warp let-off, which regulates the warp tension via the loom control in accordance with the signals from the warp tension sensor.
  • a measuring method has prevailed in which the forces are determined which the warp threads exert on a backrest beam that can be moved in an oscillating manner or is mounted on the loom so that it can vibrate.
  • Backstacks of this type are arranged on weaving machines in order to compensate for changes in tensile force in the warp threads due to the changing shed formation.
  • the backrest beams are moved periodically to compensate for the warp tension during the shed change, which can be achieved passively by resilient mounting of the backrest beam or actively by a corresponding drive of the backrest beam. Due to Such a backrest is particularly well suited to detect changes in the warp tension due to its vibratory mounting.
  • a warp tension sensor with a backrest which can be moved or oscillated transversely to its longitudinal axis is for example in FIG EP 2 584 079 A1 described.
  • the swingable backrest is connected via a lever to a force measuring device, which in turn is fixedly arranged on a machine frame.
  • the forces that act on the backrest through the warp threads are transmitted to the force measuring device via the lever.
  • the disadvantage of this embodiment is that, due to the warp threads running over the backrest and due to repercussions of the weaving process, vibrations occur on the doctor roller and thus also on the force measuring device, which can falsify the measurement result.
  • due to the considerable forces which act on the backrest via the warp threads it is necessary to make it comparatively massive, which, due to the resulting higher inertia, also makes it difficult to measure the warp tension accurately.
  • the object of the present invention is therefore to propose a device for measuring the warp tension in a weaving machine which enables a more precise measurement. Furthermore, a corresponding loom with such a device is to be proposed.
  • a weaving machine with a machine frame has a device for measuring the warp tension with a measuring element which has two ends and is designed as a deflection element, via which the warp threads of the weaving machine can be guided, furthermore a force measuring device and a lever mounted on the machine frame of the weaving machine rotatable about a stationary pivot point, via which the force measuring device can be acted upon by the measuring element.
  • the deflecting element is mounted with one of its two ends in the lever and is immovably mounted with the other end on the machine frame. Because one end of the deflecting element is mounted on the lever, it is also movably mounted on the machine frame at this end.
  • the deflecting element is movable within the machine frame to a limited extent, so that changes in the warp tension can be registered by the force measuring device.
  • the deflecting element is not capable of oscillating, but is instead firmly mounted on the machine frame, which leads to a significantly cleaner measuring signal.
  • the measurement results obtained can therefore be used much better and a warp tension that is advantageous for the weaving process can be kept constant.
  • part of the warp forces that occur can be transferred directly to the machine frame and only part of the forces is passed through the force measuring device. This also further improves the accuracy of the measurement results.
  • the components of the device for measuring the warp tension are exposed to lower loads.
  • the machine frame contains the entire frame of the weaving machine and can be composed of several components that form the basis for the attachment of various functional groups of the weaving machine.
  • the weaving machine preferably has at least one device for supplying warp threads, the device for measuring the warp tension in the warp direction being arranged downstream of the device for supplying warp threads.
  • the device for measuring the warp tension is provided with a deflection element as a measuring element, one of its two ends being fixedly mounted on the machine frame and the other of its two ends being mounted on the lever. Because the deflector according to the present invention is not mounted on the machine frame such that it can vibrate, vibrations of the loom and of the measuring element itself have a much smaller effect than before on the measurement result, so that the warp tension can be regulated more precisely.
  • the deflecting element is designed as a rotatable deflecting roller for the warp threads. Due to its rotatability, the surface of the deflection roller can follow the movement of the warp threads in the warp direction, so that fewer frictional forces occur between the warp threads and deflection roller.
  • the deflecting element not to be rotatable but to be fixed, for example as a fixed roller or as a fixed mouldboard, over which the warp threads slide.
  • the advantage of such a fixed deflecting element is that it can be made structurally simple and compact and can therefore also be used in confined spaces.
  • the pivot point of the lever is attached to the machine frame of the weaving machine.
  • Such an attachment of the lever can be carried out in a structurally simple manner.
  • the lever is designed as a two-armed lever, a first lever arm being connected to the deflecting element and a second lever arm being connected to the force measuring device.
  • the force measuring device is advantageously designed to measure tensile forces with strain gauges and has one end connected to the second lever arm, while its other end is fixed in place on the machine frame.
  • the lever can also be designed as a one-armed lever, in which case the force measuring device is preferably articulated with the end of the lever and the measuring element or deflection element between the pivot point and the end of the lever in order to advantageously reduce the forces acting on the force measuring device to achieve.
  • the second lever arm has a length which is greater than the length of the first lever arm.
  • the size of the force component effective on the force measuring device can hereby be further reduced.
  • the length of the second lever arm is at least twice as long, particularly preferably at least three times as long, as the length of the first lever arm.
  • the length of the lever arms is determined by the shortest distance between the respective articulation points of the deflection element or the force measuring device to the pivot point of the lever.
  • the device comprises at least one thread deflection element, by means of which the warp threads of the weaving machine can be guided over the deflection element in such a way that the length of an effective lever arm of warp forces acting on the deflection element is less than the length of the first lever arm.
  • the effective lever arm is understood to mean the shortest distance between the force resulting from the warp tension on the deflection element and the pivot point of the lever. In this way, the forces acting on the force measuring device can be reduced even further.
  • the device for measuring the warp tension is therefore also suitable for weaving machines in which very high warp forces of 50 kN and above occur. Nevertheless, very precise measurement results are obtained.
  • the thread deflecting element can be formed either by a deflection roller that is already present or it can be arranged as an additional thread deflecting element in the course of the warp thread.
  • the thread deflecting element can also be a backrest that is already present on the loom.
  • the lever is not attached directly to its pivot point on the machine frame, as described above, but has a cylindrical bearing section by means of which it is rotatably mounted on a cylindrical receptacle of the machine frame.
  • the fulcrum of the lever is thereby in the center of the cylindrical bearing section, while the fastening takes place over the circumference of the cylindrical bearing section.
  • such a lever with a cylindrical bearing section can also be designed both as a single-armed and as a two-armed lever and also interact with a thread deflecting element as described above.
  • the bearing section of the lever is designed as a cylindrical extension and the receptacle for the machine frame is designed as a cylindrical recess.
  • the cylindrical extension is then mounted with its outer circumference in the recess of the machine frame.
  • cylindrical bearing section of the lever is designed as a bearing bush which is fastened to the lever at one of its end faces, for example with screws.
  • the other end face of the bearing bush has, for example, a fixed or also screwed to the bearing bushing collar, which serves to guide the bearing section in the axial direction in the machine frame.
  • the bearing sections of the above-mentioned embodiments can be rotatably mounted in relation to the machine frame both in plain bearings and in roller bearings.
  • a particularly compact design of such a lever can be achieved if the cylindrical bearing section is an eccentrically arranged one Has bearing bore in which the deflecting element is mounted.
  • the length of the first lever arm thus results as the distance between the pivot point or the center point of the cylindrical bearing section and the center point of the eccentrically arranged bearing bore.
  • the deflection element is mounted in the eccentrically arranged bearing bore, for example, in conventional cylindrical slide or roller bearings.
  • a spherical dome bearing that can compensate for deflection of the deflection element relative to the lever or relative to the machine frame.
  • the weaving machine comprises a backrest which can be moved or oscillated transversely to its axis and which is preferably arranged in the warp thread course after the deflection element of the device for measuring the warp tension.
  • the backrest is usually used to compensate for changes in the tensile force of the warp threads and to deflect the warp threads. If the backrest is arranged after the deflection element of the device for measuring the warp tension, it can also advantageously serve to reduce the forces acting on the deflection element. In principle, however, it is also possible to arrange the backrest in front of the deflection element of the device for measuring the warp tension.
  • the backrest is designed without rollers with at least one thread deflecting element extending transversely to the warp direction of the loom.
  • a thread deflecting element can In contrast to a conventional, oscillating doctor roller with a low mass and a high natural frequency, it can be designed in such a way that it is hardly stimulated to oscillate itself and therefore only slightly loads the warp threads.
  • the loom can also be provided with a conventional, either positively controlled or freely controlled oscillating backrest.
  • the at least one thread deflecting element is designed as a deflector plate.
  • a baffle can be manufactured with a low mass.
  • the deflection plate itself can be designed to be resilient in order to enable the warp thread tensions to be balanced.
  • the thread deflecting element can be fastened to the machine frame and / or to a fastening strut connected to it with a resilient holder.
  • the resilient holder can be designed, for example, as a leaf spring and thereby in turn enable the movement of the thread deflecting element.
  • the thread deflecting element can of course also be designed as a rigid deflecting element, for example as a rod.
  • a backrest with a thread deflecting element mounted by means of a resilient holder is shown, for example, in FIG EP 2 126 173 B1 , to which reference is made here in full.
  • FIG EP 2 126 173 B1 A backrest with a thread deflecting element mounted by means of a resilient holder is shown, for example, in FIG EP 2 126 173 B1 , to which reference is made here in full.
  • FIG EP 2 126 173 B1 A backrest with a thread deflecting element mounted by means of a resilient holder is shown, for example, in FIG EP 2 126 173 B1 , to which reference is made here in full.
  • other versions of string trees are also conceivable.
  • the WO 2015/049216 referenced which shows a backrest with a driven thread deflecting element which is provided with an adjustable spring element.
  • the weaving machine has a device for measuring the warp tension which comprises a lever with a cylindrical bearing section, by means of which the lever is rotatably mounted on a receptacle in the machine frame.
  • the lever also includes an eccentrically arranged bearing bore for mounting the deflecting element. This enables a compact construction of the device and the assembly of the device on the loom is facilitated by the mounting of the machine frame.
  • the described device with the lever with the cylindrical bearing section is arranged on a device for measuring the warp tension of an upper chain. Particularly in connection with a device arranged above the weaving plane for supplying warp threads for the upper warp, the assembly of the device on the weaving machine can thereby be facilitated.
  • a particularly advantageous development of the described weaving machine also has a device for feeding warp threads, which is preferably arranged below the weaving plane and is designed for feeding in a lower warp. This is also assigned a device for measuring the warp tension.
  • FIG. 1 shows a schematic side view of a loom 1 which is equipped with a device 2 for measuring the warp tension.
  • the warp threads 5 are unwound in the usual way from a warp beam 4 of a device 3 for supplying warp threads and fed successively in the warp direction KR (see arrow) via the device 2 for measuring the warp tension, a backing beam 6 and warp thread monitor 7 to the shedding means 8, which can be moved in the usual way in an oscillating manner and in opposite directions in order to form the shed 11.
  • the backrest has a deflection element 22 and can be designed in various ways, as will be explained with reference to the following figures. Not shown are weft insertion means, which can be designed in various ways and are sufficiently known in the prior art.
  • the weaving machine has a reed 9 by means of which an inserted weft thread can be struck at the binding point 10 of the fabric that has already been created.
  • the finished fabric is drawn off at the end of the weaving machine 1 opposite the warp beam 4 by means of a draw-in roller 13 and wound onto a fabric beam 14.
  • several deflecting rollers 12 can be seen in the area of the draw-in roller 13 or the fabric beam 14.
  • the weaving machine 1 furthermore has a drive 15 for the warp beam 4 in order to control the warp let-off in a targeted manner, as well as a further drive 15 for the controlled drive of the draw-in roller 13.
  • the reed 9 is connected to a main drive 35 of the weaving machine 1.
  • the weaving machine 1 has a control unit 16 by means of which sensor data can be recorded and drives can be controlled in order to ensure the trouble-free operation of the weaving machine and enable the production of a uniform fabric.
  • the devices mentioned are connected to the controller 16 of the loom 1 by means of signal-transmitting lines, as indicated by the dotted lines.
  • the outlines of a machine frame 20 are also shown schematically.
  • the device 2 for measuring the warp tension contains, in a manner known per se, a deflection element 17 which can be acted upon by the tensile tension of the warp threads 5 and which has a force measuring device (18, see FIG Figure 2 and 4th ) is connected in order to be able to measure the warp tension.
  • the information about the warp tension (tension) of the warp threads 5 is also transmitted via a signal-transmitting line (dash-dotted line) to the control unit 16 of the weaving machine 1, which in turn controls the drive 15 of the warp beam 4 accordingly in order to cause a change in tension in the warp threads 5.
  • FIG 2 shows a schematic representation of a device 2 for measuring the warp tension in a side view.
  • the device 2 comprises a deflection element 17, which has two ends 17a and 17b (see Figure 3 ) and over which warp threads 5 (not shown here) of the loom 1 can be guided.
  • the deflection element 17 is mounted in the machine frame 20 of the loom 1 by means of a lever 21 in such a way that over the lever 21 tension changes in the warp threads 5 can be transmitted to a force measuring device 18.
  • the force measuring device 18 is preferably designed to measure tensile stresses and has, for example, strain gauges.
  • the force measuring device 18 is, as already in FIG Figure 1 described, connected to the control unit 16 in a signal-transmitting manner, as indicated by the dash-dotted line.
  • the device 2 for measuring the warp tension thus corresponds to previously known devices 2.
  • the deflecting element 17 is not designed as a swinging backrest, but is at least partially rigid on the machine frame 20 stored, of which only a part is shown here in a broken view.
  • the machine frame 20 contains the entire frame of the weaving machine 1 and can be composed of several components which form the basis for the attachment of various functional groups of the weaving machine.
  • the deflecting element 17 is mounted with its first end 17a via the lever 21 on the machine frame 20.
  • Figure 3 shows another part of the machine frame 20 also broken away. Furthermore, in Figure 3 the deflection element 17 can be seen in the dash-dotted representation, which is mounted with its second end 17b in the part of the machine frame 20 shown.
  • the deflecting element 17 is movably mounted on the machine frame 20 with its first end 17a, but is fixedly mounted on the machine frame 20 with its second end 17b.
  • the immovable mounting of the deflecting element 17 with its second end 17b on the machine frame 20 is shown in FIG Figure 3 and can be done for example by means of a bearing plate 27.
  • the deflecting element 17 is movable Lever 21 and thus movably mounted on the machine frame 20.
  • the lever 21 is designed as a two-armed lever 21 and is attached to the machine frame 20 at its pivot point 19.
  • the lever 21 has a first lever arm 21a, in which the deflecting element 17 is mounted and links the lever via an articulation point 31, and a second lever arm 21b, to which the force measuring device 18 is articulated at an articulation point 31. If the tensile stress of the warp threads 5 causes a force F to act on the deflecting element 17 and thereby on the lever arm 21a, the force F transmitted by the lever 21 can be registered by the force measuring device 18. In this case, it is particularly advantageous that because the deflecting element 17 is rigidly mounted at its second end 17b, only part of the warp forces that occur are directed to the force measuring device 18. The device 2 is therefore particularly suitable for looms where very high warp forces occur.
  • the length L1 of the first lever arm 21a is significantly smaller than the length L2 of the second lever arm 21b, whereby the forces acting on the force measuring device 18 are further reduced.
  • the lever 21 is also present as a two-armed lever 21 but is not attached to the machine frame 20 at its pivot point 19. Rather, the lever 21 has a cylindrical bearing section 23 by means of which it is rotatably mounted on a likewise cylindrical receptacle 24 on the machine frame 20.
  • the receptacle 24 is designed as a cylindrical recess, while the lever 21 has a cylindrical extension or shoulder as a bearing section 23.
  • the receptacle 24 and the bearing portion 23 are in the Figure 4 covered by the front of the lever 21 and therefore shown in dashed lines. It is now possible to insert the lever 21 with its cylindrical extension or shoulder into the receptacle 24 of the machine frame, so that, according to the present embodiment, the lever 21 is mounted with the outer circumference of its cylindrical extension in the recess of the machine frame.
  • the machine frame 20 with the cylindrical extension or shoulder and the lever 21 with the corresponding recess as a bearing section 23. Since the cylindrical bearing section 23 can be rotated within the cylindrical receptacle 24, the lever 21 is now in turn rotatable about its pivot point 19, which corresponds to the center point of the cylindrical receptacle 24.
  • the lever 21 also has a bearing bore 25 in which the deflecting element 17 is mounted with its first end 17a.
  • the bearing bore 25, the center of which forms the articulation point 31 for the deflecting element 17, is arranged eccentrically in the cylindrical bearing section 23.
  • the lever 21 also has an extension 30 to which the force measuring device 18 is articulated at an articulation point 31. This in turn results in a two-armed lever 21 with a first lever arm 21a, which is located essentially within the bearing section 23, and a second lever arm 21b, which in the present case is essentially located in the area of the extension 30.
  • the length L1 of the first lever arm 21a results in turn as the shortest distance from the articulation point 31 of the deflection element 17 to the pivot point 19.
  • the length L2 of the second lever arm 21b results in an analogous manner from the shortest distance between the articulation point 31 of the force measuring device 18 and the pivot point 19.
  • the length L1 of the first lever arm 21a is advantageously significantly smaller than the length L2 of the second lever arm 21b.
  • FIG. 5 Another possible implementation shows Figure 5 in a sectional view.
  • the cylindrical bearing section 23 of the lever 21 is designed as a bearing bushing, which is fastened to the lever 21 at one of its end faces, for example with screws (not shown).
  • the other end face of the bearing bush has, for example, a fixed or likewise screwed stop collar to the bearing bush, which serves to guide the bearing section 23 in the axial direction in the machine frame 20.
  • the bearing sections 23 and the bearing of the deflecting element 17 of the above-mentioned embodiments can be rotatably supported both in plain bearings and in roller bearings.
  • the use of a spherical dome bearing is particularly advantageous because this allows deflection of the deflecting element 17 with respect to the lever 21 or with respect to the machine frame 20 to be compensated - on a more detailed representation of these bearings in the figures but waived.
  • the lever 21 can of course also be designed in a different way.
  • the bearing section 23 is arranged at the end of the lever 21 and the lever 21 furthermore has an extension 30.
  • extensions 30 it would also be conceivable for extensions 30 to extend on both sides of the bearing section 23 or for the lever 21 to be designed without an extension 30, so that it is essentially formed by the cylindrical bearing section 23.
  • the articulation point 31 of the force measuring device 18 would also be arranged eccentrically within the bearing section 23.
  • the lever 21 would be designed essentially in the form of a disk.
  • Figure 6 shows a further embodiment of a device 2 for measuring the warp tension, which, in addition to the deflecting element 17, includes a thread deflecting element 22.
  • a thread deflecting element 22 As from the Figure 6 As can be seen, it is possible by means of one or more thread deflection elements 22 to reduce the magnitude of the forces acting on the force measuring device 18.
  • the warp threads 5 can be guided over the deflection element 17 by means of one or more such thread deflecting elements 22, so that the force F resulting from the warp forces acts on the deflecting element 17 with an effective lever arm of length L3, which is less than the length L1 of the first lever arm 21.
  • the lever arms 21a and 21b are in Figure 6 largely covered by the body of the deflecting elements 17 or the thread deflecting element 22 and therefore not designated for reasons of clarity.
  • the thread deflecting element 22 can be designed as a stationary deflecting element or a stationary deflecting roller. According to the present illustration, however, the thread deflecting element 22 is part of the backrest 6, which is mounted on the weaving machine 1 or the machine frame 20 so as to be able to oscillate transversely to its longitudinal axis. According to the present embodiment, the backrest 6 contains a further lever 32 for this purpose, which is articulated to the machine frame 20 via a spring 33 and which carries the thread deflecting element 22.
  • the backrest 6 and the device 2 for measuring the warp tension are combined to form a structural unit, so that they can be arranged on the loom 1 in a simple manner.
  • Figure 7 shows as an alternative to the execution of the Figure 6 likewise a device 2 for measuring the warp tension, which comprises a thread deflecting element 22 or a backrest 6.
  • a device 2 for measuring the warp tension which comprises a thread deflecting element 22 or a backrest 6.
  • the same reference symbols denote here again in comparison to Figure 6 identical or at least comparable characteristics, so that these are not explained again separately. It is therefore only on the differences to Figure 6 received.
  • the string tree 6 of the Figure 7 does not contain a rotatable and oscillatable doctor roller as a thread deflecting element 22, but is designed without a roller with a non-rotatable or fixed thread deflecting element 22.
  • the thread deflection element 22 is fastened by means of one or more resilient mountings 26 in the machine frame 20 or on a fastening strut 34 connected to the machine frame 20.
  • the thread deflecting element 22 is hereby also capable of oscillating transversely to its longitudinal axis, as indicated by the arrows.
  • the thread deflecting element 22 can extend continuously over the entire width of the loom 1 or be continuously approximately as wide as the deflecting element 17 is long.
  • the thread deflecting element 22 may have a shorter length. Furthermore, it is possible for several thread deflection elements 22 to be arranged next to one another in order to cover the entire width of the loom 1 or the warp threads 5.
  • Figure 8 shows a loom 1 according to a further embodiment, on which the described device 2 for measuring the warp tension can advantageously be used.
  • the loom 1 of the Figure 8 additionally has a further device 3 for supplying warp threads 5.
  • the first device 3 shown in the picture below is designed for feeding a lower warp 29, while the device 3 shown in the picture above is designed for feeding warp threads 5 of an upper warp 28.
  • Each of the devices 3 is assigned its own device 2 for measuring the warp tension, each of which contains a deflection element 17.
  • each of the devices 3 for supplying warp threads is also a backrest 6 assigned.
  • the backing beam 6 can be designed in various ways and contain a positively controlled or freely oscillating doctor roller or deflecting roller, or else only have a resilient thread deflecting element 22.
  • the devices 2 for measuring the warp tension with the deflecting elements 17 can, as described above, be designed in various ways and also, as in FIGS Figures 6 and 7th shown, be combined with the string trees 6 each to form a structural unit.
  • the device 2 for measuring the warp tension of the upper chain 28 comprises a lever 21 with a cylindrical bearing section 23, as shown in FIG Figure 4 is shown. This enables, in particular, on the upper chain 28 a favorable reception of the deflecting element 17 and arrangement in relation to the warp beam 4.
  • the device 2 for measuring the warp tension has a lever 21 with a first and a second lever arm 21a, 21b, as shown in the Figure 2 is shown. This in turn enables the deflection element 17 to be received and supported in a simple manner, as shown in FIG Figure 2 emerges.

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  • Textile Engineering (AREA)
  • Looms (AREA)
  • Auxiliary Weaving Apparatuses, Weavers' Tools, And Shuttles (AREA)

Claims (17)

  1. Métier à tisser (1) avec un bâti (20) de machine et avec un dispositif (2) pour la mesure de la tension de chaîne avec un élément de mesure présentant deux extrémités (17a, 17b), qui se présente sous la forme d'un élément de renvoi (17) et sur lequel les fils de chaîne (5) du métier à tisser (1) peuvent être guidés, avec un dispositif de mesure (18) de force et avec un levier (21) monté de manière rotative autour d'un point de pivotement stationnaire (19), sur le bâti (20) de machine du métier à tisser (1), par lequel le dispositif de mesure (18) de force peut être soumis à une force par l'élément de mesure, caractérisé en ce que l'élément de renvoi (17) est monté par l'une de ses deux extrémités (17a, 17b) sur le levier (21) et, par l'autre de ses deux extrémités (17a, 17b), de manière fixe sur le bâti (20) de machine du métier à tisser (1).
  2. Métier à tisser (1) selon la revendication précédente, caractérisé en ce que l'élément de renvoi (17) se présente sous la forme d'un cylindre de renvoi rotatif pour les fils de chaîne (5).
  3. Métier à tisser (1) selon la revendication 1, caractérisé en ce que l'élément de renvoi (17) se présente sous la forme d'un élément de renvoi (17) fixe.
  4. Métier à tisser (1) selon l'une quelconque des revendications précédentes, caractérisé en ce que le levier (21) se présente sous la forme d'un levier (21) à deux bras, un premier bras (21a) de levier étant relié à l'élément de renvoi (17) et un second bras de levier (21b) est relié au dispositif de mesure (18) de force.
  5. Métier à tisser (1) selon la revendication précédente, caractérisé en ce que le second bras de levier (21b) présente une longueur (L2) qui est supérieure à la longueur (L1) du premier bras de levier (21a), la longueur (L2) du second bras de levier (21b) étant de préférence au moins deux fois plus longue et, de manière particulièrement préférée, au moins trois fois plus longue que la longueur (L1) du premier bras de levier (21a).
  6. Métier à tisser (1) selon l'une quelconque des revendications 4 ou 5, caractérisé en ce que le dispositif comprend au moins un élément de renvoi (22) de fil au moyen duquel les fils de chaîne (5) du métier à tisser (1) peuvent être guidés sur l'élément de renvoi (17) de sorte que la longueur (L3) d'un bras de levier efficace de forces de chaîne agissant sur l'élément de renvoi (17) soit inférieure à la longueur (L1) du premier bras de levier (21a).
  7. Métier à tisser (1) selon l'une quelconque des revendications précédentes, caractérisé en ce que le levier (21) est fixé en son point de pivotement (19) sur le bâti (20) de machine du métier à tisser (1).
  8. Métier à tisser (1) selon l'une quelconque des revendications 1 à 6, caractérisé en ce que le levier (21) comprend une section de palier cylindrique (23) formée de préférence à l'une de ses extrémités, au moyen de laquelle il est monté de manière rotative sur un logement cylindrique (24) du bâti (20) de machine.
  9. Métier à tisser (1) selon la revendication 8, caractérisé en ce que la section de palier (23) du levier (21) se présente sous la forme d'une embase cylindrique et le logement (24) du bâti (20) de machine se présente sous la forme d'un évidement cylindrique, et que l'embase cylindrique est logée par sa circonférence extérieure dans l'évidement.
  10. Métier à tisser (1) selon la revendication 8, caractérisé en ce que la section de palier cylindrique (23) du levier (21) se présente sous la forme d'une bague de palier qui est fixée sur le levier (21) à l'une de ses faces d'extrémité, tandis que l'autre face d'extrémité présente un collet de butée.
  11. Métier à tisser (1) selon l'une quelconque des revendications 8 à 10, caractérisé en ce que la section de palier cylindrique (23) présente un alésage de palier (25) disposé de manière excentrée, dans lequel est logé l'élément de renvoi (17).
  12. Métier à tisser (1) selon l'une quelconque des revendications précédentes, caractérisé en ce que le métier à tisser (1) présente au moins un dispositif (3) pour l'amenée de fils de chaîne (5), le dispositif (2) pour la mesure de la tension de chaîne étant disposé en aval du dispositif (3) pour l'amenée de fils de chaîne (5) dans le sens de chaîne.
  13. Métier à tisser selon l'une quelconque des revendications précédentes, caractérisé en ce que le métier à tisser (1) comprend un porte-fils (6) qui mobile par oscillation ou oscillant et qui est disposé de préférence dans le trajet des fils de chaîne en aval de l'élément de renvoi (17) du dispositif (2) pour la mesure de la tension de chaîne.
  14. Métier à tisser selon la revendication précédente, caractérisé en ce que le porte-fils (6) se présente sous une forme sans rouleaux avec au moins un élément de renvoi (22) de fil s'étendant transversalement au sens de chaîne du métier à tisser (1).
  15. Métier à tisser selon la revendication précédente, caractérisé en ce que le, au moins un, élément de renvoi (22) de fil se présente sous la forme d'une plaque de renvoi, de préférence faisant ressort, et/ou que le, au moins un, élément de renvoi (22) de fil est fixé au moyen d'au moins une fixation (26) faisant ressort sur le bâti (20) de la machine et/ou sur un montant de fixation (34) relié au bâti (20) de la machine.
  16. Métier à tisser selon la revendication 12, caractérisé en ce que le dispositif (3) pour l'amenée de fils de chaîne (5) se présente sous une forme pour l'amenée d'une chaîne supérieure (28).
  17. Métier à tisser selon la revendication précédente, caractérisé en ce que le métier à tisser (1) comprend un autre dispositif (3) pour l'amenée de fils de chaîne (5), qui se présente sous une forme pour l'amenée d'une chaîne inférieure (29) et auquel est attribué un autre dispositif (2) pour la mesure de la tension de chaîne.
EP17790740.9A 2016-10-20 2017-10-19 Dispositif de mesure de la tension de chaîne dans une machine à tisser et machine à tisser équipée d'un tel dispositif Active EP3529404B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102016220546.3A DE102016220546B3 (de) 2016-10-20 2016-10-20 Vorrichtung zur Messung der Kettspannung in einer Webmaschine sowie Webmaschine mit einer derartigen Vorrichtung
PCT/EP2017/076791 WO2018073386A1 (fr) 2016-10-20 2017-10-19 Dispositif de mesure de la tension de chaine dans une machine à tisser et machine a tisser équipé d'un tel dispositif

Publications (2)

Publication Number Publication Date
EP3529404A1 EP3529404A1 (fr) 2019-08-28
EP3529404B1 true EP3529404B1 (fr) 2021-01-20

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EP17790740.9A Active EP3529404B1 (fr) 2016-10-20 2017-10-19 Dispositif de mesure de la tension de chaîne dans une machine à tisser et machine à tisser équipée d'un tel dispositif

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EP (1) EP3529404B1 (fr)
JP (1) JP6938629B2 (fr)
CN (1) CN109844198B (fr)
DE (1) DE102016220546B3 (fr)
WO (1) WO2018073386A1 (fr)

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RU2825362C1 (ru) * 2024-03-02 2024-08-26 Общество с ограниченной ответственностью "Внешнеторговая фирма "Текстильмаш" Скальная система ткацкого станка

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JP2534202Y2 (ja) * 1991-12-13 1997-04-30 株式会社豊田自動織機製作所 織機における経糸張力検出装置
IT1273785B (it) * 1994-02-18 1997-07-10 Nuovo Pignone Spa Dispositivo perfezionato per misurare la tensione di ordito in un telaio tessile
CN2546466Y (zh) * 2002-04-28 2003-04-23 江苏省高淳纺织机械厂 经纱张力感测机构
JP2004250817A (ja) * 2003-02-19 2004-09-09 Toyota Industries Corp 織機における経糸張力検出装置
CN2672109Y (zh) * 2003-12-19 2005-01-19 杭州纺织机械有限公司 织机多辊桁架式张力后梁结构
JP4955325B2 (ja) * 2006-07-11 2012-06-20 津田駒工業株式会社 織機のロールの支持装置
DE102006061376A1 (de) * 2006-12-23 2008-06-26 Lindauer Dornier Gmbh Streichbaum für eine Webmaschine
JP5778544B2 (ja) * 2011-10-19 2015-09-16 津田駒工業株式会社 織機の張力検出装置
DE102013219942A1 (de) * 2013-10-01 2015-04-02 Lindauer Dornier Gesellschaft Mit Beschränkter Haftung Verfahren und Vorrichtung zum Aufbringen von Kräften und Bewegungen auf Kettfäden einer Webmaschine

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Publication number Priority date Publication date Assignee Title
RU2825362C1 (ru) * 2024-03-02 2024-08-26 Общество с ограниченной ответственностью "Внешнеторговая фирма "Текстильмаш" Скальная система ткацкого станка

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Publication number Publication date
DE102016220546B3 (de) 2017-11-16
JP2019535914A (ja) 2019-12-12
CN109844198A (zh) 2019-06-04
WO2018073386A1 (fr) 2018-04-26
EP3529404A1 (fr) 2019-08-28
CN109844198B (zh) 2020-10-23
JP6938629B2 (ja) 2021-09-22

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