EP0342135A1 - Schussfadensaug und -haltevorrichtung für Webmaschinen mit pneumatischem Schusseintrag - Google Patents

Schussfadensaug und -haltevorrichtung für Webmaschinen mit pneumatischem Schusseintrag Download PDF

Info

Publication number
EP0342135A1
EP0342135A1 EP89420169A EP89420169A EP0342135A1 EP 0342135 A1 EP0342135 A1 EP 0342135A1 EP 89420169 A EP89420169 A EP 89420169A EP 89420169 A EP89420169 A EP 89420169A EP 0342135 A1 EP0342135 A1 EP 0342135A1
Authority
EP
European Patent Office
Prior art keywords
weft
vacuum cleaner
suction
thread
weft thread
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP89420169A
Other languages
English (en)
French (fr)
Inventor
Michel Volland
Gilles Grandvallet
Jean-Pierre Valéro
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Saurer Diederichs SA
Original Assignee
Saurer Diederichs SA
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Priority claimed from FR8806605A external-priority patent/FR2631351B1/fr
Priority claimed from FR8810082A external-priority patent/FR2634500B1/fr
Application filed by Saurer Diederichs SA filed Critical Saurer Diederichs SA
Publication of EP0342135A1 publication Critical patent/EP0342135A1/de
Withdrawn legal-status Critical Current

Links

Images

Classifications

    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
    • D03D47/00—Looms in which bulk supply of weft does not pass through shed, e.g. shuttleless looms, gripper shuttle looms, dummy shuttle looms
    • D03D47/28—Looms in which bulk supply of weft does not pass through shed, e.g. shuttleless looms, gripper shuttle looms, dummy shuttle looms wherein the weft itself is projected into the shed
    • D03D47/30—Looms in which bulk supply of weft does not pass through shed, e.g. shuttleless looms, gripper shuttle looms, dummy shuttle looms wherein the weft itself is projected into the shed by gas jet
    • D03D47/3066—Control or handling of the weft at or after arrival
    • D03D47/308—Stretching or holding the weft

Definitions

  • the present invention relates to a device for suction and retention of the weft thread, placed on the side opposite to the launching nozzle in a weaving machine without shuttle where the insertion of the weft thread is ensured by pneumatic means, in particular by nozzles.
  • the weft thread coming from a supply spool, and delivered in successive lengths corresponding to a pick is accelerated and thrown through the "crowd" of warp threads by means at least one launching nozzle, located on one side of the weaving machine.
  • the weft thread has its movement guided in an insertion channel and maintained by relay nozzles arranged at regular intervals in the insertion channel, over the entire width of the fabric being training.
  • the weft thread On its arrival on the side opposite to the launching nozzle, the weft thread must be kept taut, until the moment of striking.
  • weft vacuum cleaner placed on this side on the weaving machine and especially mounted on the comb holder; see for example French patents 2 184 052, 2 448 293 and 2 526 053.
  • the weft vacuum cleaner comprises a tubular element placed in the axis of the insertion channel, and provided with a lateral supply of compressed air, creating a depression at the inlet of the tubular element, and at the inside this tubular element a flow of air in an axial general direction, hence a suction and entrainment effect of the weft thread arriving at the entry of the tubular element, and consequently a tensioning of this wire, followed by a maintenance in tension as long as the vacuum cleaner remains supplied with compressed air.
  • the compressed air supply to the weft vacuum cleaner should be properly synchronized with the time of arrival of the weft thread, so that this thread is held securely, without the consumption of compressed air becoming excessive .
  • This problem has not yet been satisfactorily resolved, except by increasing the blowing time of the last groups of relay nozzles, whereas normally the relay nozzles should only have the function of transferring the frame. , not restraint.
  • the aim of the present invention is to improve vacuum cleaners weft, making them more efficient from the point of view of wire retention without increasing their consumption of compressed air.
  • the subject of the invention is a device for suction and retention of the weft thread, for a weaving machine with pneumatic weft insertion, which essentially comprises, associated with a weft vacuum cleaner proper with axial thread entry of weft and lateral arrival of compressed air, mechanical braking means of the weft thread in an area located upstream of its point of entry into the vacuum cleaner, or downstream of this vacuum cleaner
  • the vacuum cleaner is preferably placed downstream of the mechanical retaining means of the weft thread.
  • this vacuum cleaner creates a vacuum at its inlet which sucks the weft thread, and on return, the thread naturally applies to the braking means, because it is kept slightly taut downstream by the vacuum cleaner. There is thus an amplification effect of the action of the vacuum cleaner.
  • the weft thread is safely "trapped” as soon as it arrives by mechanical means, and its backtracking is effectively braked, which limits the duration of supply of the weft vacuum cleaner and the nozzles - compressed air relay, thus reducing consumption of compressed air.
  • the mechanical braking means of the weft thread, placed upstream or downstream of the weft vacuum cleaner proper are constituted by a conduit which is connected at one end to the axial entry of the weft thread into the vacuum cleaner or at the exit of this vacuum cleaner, and which forms a plurality of bends imposing successive changes of direction on the thread.
  • the braking means are here, in a way, "baffles" which are traversed by the weft thread, the retaining effect obtained for the thread being able to be easily adjusted by the choice of the number of baffles.
  • the parts of the thread possibly marked by the baffles remain outside the fabric, in the waste.
  • the mechanical braking means of the weft thread can in particular be produced in the form of a tubular element, connected by one end to the axial inlet of the weft thread in the vacuum cleaner, or to the outlet of this vacuum cleaner, and inside which partitions are arranged separated from each other in the axial direction by intervals, which are attached alternately to two opposite parts of the inner wall of the tubular element, each partition interrupting at a certain distance from the part of this wall opposite to the part to which it is attached.
  • the partitions may in particular be arranged perpendicular to the axis of the tubular element. These partitions are formed, for example, by added strips inserted transversely into the tubular element.
  • This tubular element may have a square or rectangular section, while the attached strips are of rectangular shape.
  • the strips can be inserted, and preferably fixed by gluing or welding, in transverse slots formed on the tubular element and opening out alternately on one side and the other of this element.
  • the conduit in the case of an arrangement upstream of the vacuum cleaner, advantageously has a decreasing passage section in the direction of the end of this conduit connected to the axial inlet of the weft thread in the vacuum cleaner, so as to minimize the pressure losses upstream of the vacuum cleaner.
  • the decreasing passage section can result simply from the fact that the aforesaid partitions are separated from each other by decreasing intervals, and have increasing widths towards the end of the element. tubular connected to the axial inlet of the weft thread in the vacuum cleaner.
  • the duct may have an increasing section obtained by increasing intervals between the partitions, and decreasing widths of these partitions.
  • the mechanical braking of the weft thread, on its return back is effected by friction on the free edges of the above-mentioned partitions, which represents a total length of friction relatively low ; however, in the case of certain fragile wires, this can lead to deterioration of the wire since the edges of the different partitions, encountered by the wire, represent as many aggressive parts.
  • the invention provides a second embodiment in which the mechanical braking means of the weft thread, placed upstream of the vacuum cleaner weft proper, comprise a helical or spiral channel, connected by one end to the axial inlet of the weft thread in the vacuum cleaner, the helical or spiral channel being able to be traversed by the weft thread and by the air flow sucked in the vacuum cleaner.
  • a threaded member of the screw type is provided in particular, surrounded by a tubular element coming into contact with the thread of said member.
  • the braking length is important here, since it is equal to the diameter at the bottom of the thread of the threaded member, multiplied by "pi" and by the number of turns. It is therefore understood that an effective mechanical retaining action of the weft thread can be obtained on a small number of turns, for example two turns or even a single turn, so that the presence of the device does not lead to waste of thread. too long.
  • the principle of the device can, in this embodiment, be compared to that of a capstan.
  • the general axis of the helical or spiral channel is coincident with that of the axial entry of the weft thread into the vacuum cleaner.
  • the general axis of the helical or spiral channel is orthogonal to that of the axial entry of the weft thread into the vacuum cleaner; this other arrangement provides a tangential arrival of the wire in the channel, and also a tangential exit of the wire out of this channel, bringing the wire directly into the axial inlet of the vacuum cleaner, which is then offset from the axis of the weft thread insertion channel.
  • the helical or spiral channel must also be adapted to the air flow entering the vacuum cleaner.
  • the section of the helical or spiral channel can be made decreasing, towards the end of this channel connected to the axial entry of the weft thread in the vacuum cleaner, by varying the pitch of the propeller and / or by varying the diameter at the bottom of the thread.
  • the mechanical braking means of the weft thread, placed upstream of the weft vacuum cleaner proper are constituted by a clamp, comprising two clamping elements elastically pushed one in direction of the other, and between which the weft thread is able to be engaged, by its part located upstream of that introduced into the axial inlet of the vacuum cleaner, during the return back of this thread.
  • the clamping elements can be constituted by a small piston subjected to the action of a spring and by a fixed counterpart situated opposite the piston, or else by elastic strips.
  • the clamping elements are arranged towards a first end of an "S" conduit, traversed by the weft thread and by the flow of air sucked into the vacuum cleaner, conduit the other end of which is connected to the axial inlet of this vacuum cleaner. Thanks to this arrangement, the weft thread at the end of insertion is easily introduced into the vacuum cleaner, avoiding the pinching elements, but it then engages securely in the clamp by inertia effect and taking care to go back, which corresponds well to the aim which is to retain the wire to keep it taut and avoid its going back, after its insertion.
  • Figure 1 recalls the principle of pneumatic insertion of the weft, in an air jet weaving machine.
  • the weft thread 1 comes from a supply spool 2, placed on one side of the weaving machine, and it first arrives at a mechanical pre-deliverer 3, which measures lengths of thread corresponding exactly to a pick, and which delivers the weft thread 1 by successive lengths each corresponding to a pick. Then, after the passage of a brake 4 with positive control, the weft thread 1 arrives at a launch nozzle 5, supplied with compressed air, where it receives its initial acceleration in order to be inserted in the "crowd" of the threads chain 6.
  • the weft thread 1 In crossing the crowd, the weft thread 1 is guided inside an insertion channel 7, delimited by the teeth of a confining comb 8, carried by the same support 9 as the main comb 10.
  • the weft thread 1, traversing the insertion channel 7 over the entire width of the fabric 11 being formed, has its movement maintained by the auxiliary air pulses supplied by relay nozzles 12, arranged at regular intervals and supplied sequentially.
  • the weft thread 1 On its arrival on the edge of the fabric 11 located on the side opposite to the launching nozzle 5, the weft thread 1 is held taut by a device 13, until the comb strikes 10.
  • the control of the inserted frame is provided by at least one opto-electronic detector 14, called “weft breaker", located in the vicinity of the device 13.
  • the detector 14, like the device 13, are mounted on the end of the support 9 which carries the comb 10 and the confiner 8.
  • a chisel 15 On the side of the launching nozzle 5, a chisel 15 makes it possible to separate the inserted pick from the rest of the weft thread 1.
  • the invention relates to the device 13 which, to ensure the retention of the weft thread 1 at the end of insertion, comprises on the one hand a weft vacuum cleaner 16, and on the other hand means of mechanical braking of the weft thread 1 , located upstream of the vacuum cleaner 16 (the term “upstream” must be understood by reference to the direction of movement of the wire 1 during its insertion).
  • the weft vacuum cleaner 16 comprises, in all the embodiments shown, an element 17 for axial entry of the weft thread 1, with a connector 18 for lateral supply of compressed air.
  • the inlet element 17 is extended by a tubular body 19, the element 17 and the body 19 forming a sub-assembly which is arranged along an axis 20, coincident with the axis of the insertion channel or parallel to it. latest.
  • the input element 17 of the weft yarn 1, with its connection 18 for supplying compressed air, can be produced in a manner known by French patent No. 2,526,053.
  • the connection 18 is connected to a compressed air supply duct 21 (see FIG. 1), and the internal structure of the element 17 induces a flow of aspirated air initially oriented along the axis 20, in the direction of the tubular body 19, this flow of air itself sucking the end of the weft thread 1 which enters axially into the element 17.
  • the mechanical braking means designated as a whole by 22, comprise a tubular element 23, for example of square section, arranged along the axis 20 upstream of the weft vacuum cleaner 16.
  • the upstream end of the tubular element 23 comprises a socket 24 defining an axial inlet for the weft thread 1.
  • the downstream end of the tubular element 23 is connected, by a conical intermediate piece 25, to the axial input element 17 belonging to the vacuum cleaner 16.
  • transverse slots located in planes perpendicular to the axis 20, which open alternately in the upper face 26 and in the lower face 27 of this element 23.
  • a strip 28 rectangular in shape, the width of which is equal to the width of the tubular element 23, between its two lateral faces but the height of which is smaller than the interior height of the element 23, between its upper face 26 and its lower face 27.
  • Each strip 28 is fixed by gluing or by welding.
  • the duct 29 can be given a decreasing passage section, from the end of this duct situated upstream, on the side of the inlet socket 24, to its downstream end, connected by the intermediate part 25 to the element 17 for axial entry of the weft vacuum cleaner 16.
  • the lamellae 28 are separated from each other, in the direction of the axis 20, by decreasing intervals downstream.
  • the first strips 28 have smaller widths than the widths of the following strips 28.
  • the first partitions formed for these strips 28 are interrupted at a greater distance from the upper face 26 or from the lower face 27 of the tubular element 23, and the following partitions are interrupted at a smaller distance from the upper face 26 or lower 27.
  • the assembly of the assembly formed by the vacuum cleaner 16 and by the mechanical braking means 22, is ensured by two tabs 30 and 31 welded to a base 32, which is mounted on the support 9 of the comb 10 and of the confiner 8 in the desired position.
  • the flow of aspirated air flows through the conduit 29 to arrive at the element 17 of axial inlet of the vacuum cleaner 16.
  • the front end of this thread is introduced into the duct 29, at the inlet of which a depression is created , and it follows the elbows of this duct 29 before reaching the vacuum cleaner 16.
  • the weft thread 1 is both stretched by the pneumatic suction effect, and mechanically braked on the backward movement, by the friction effect against the free edges of the strips 28 which causes the tension in the wire to be maintained by the vacuum cleaner 16.
  • FIG. 3 shows another embodiment, in which the weft aspirator 16 and the fixing means 30, 31, 32 of the device 13 are not modified, their elements being designated by the same references as in FIG. 2.
  • the mechanical braking means designated as a whole by 33, here comprise a tubular element 34 of round section arranged along the axis 20 upstream of the weft vacuum cleaner 16.
  • the upstream end of the tubular element 34 comprises a bush 35 defining an axial inlet for the weft thread 1, and the downstream end of this tubular element 34 is connected, by a conical intermediate piece 36, to the axial inlet member 17 belonging to the vacuum cleaner 16.
  • tubular element 34 In the tubular element 34 is mounted, along the axis 20, a threaded member 37 of the screw type, the thread 38 of which comes into contact with the internal wall of the tubular element 34.
  • the tubular element 34 and l the threaded member 37 together define a helical channel 39, the general axis of which coincides with the axis 20 of the weft vacuum cleaner 16.
  • the weft thread 1 is introduced into the helical channel 39, at the entrance of which a vacuum is created by the vacuum cleaner 16, and this thread follows the successive turns of the channel 39 before reaching the vacuum cleaner 16 resuming an axial direction.
  • the braking of the weft thread 1 on its return back, results from the friction on the threaded member 37, at the bottom of the thread, the thread retaining action being here determined by the developed length of the turns (measured at the bottom of net).
  • the channel 39 may have a decreasing section in the direction of the weft vacuum cleaner 16, to minimize the pressure drops.
  • FIG. 4 shows another device 13 with helical channel, distinguished from the embodiment according to FIG. 3 by the fact that the axis of the helical channel 39 is orthogonal to the axis 20 of the weft vacuum cleaner 16, and not confused with this axis 20.
  • the helical channel 39 is therefore here delimited by a tubular element 34 and by a threaded member 37 arranged along the same axis 40, orthogonal to the axis 20 of the vacuum cleaner.
  • the threaded member 37 has, at its ends, enlarged parts 41 and 42, which close off the tubular element 34.
  • a socket 35 is provided at one end of the helical channel 39, in the axis of the insertion channel and in a tangential orientation relative to the helical channel 39.
  • the other end of this helical channel 39 is in correspondence with the element 17 of axial input belonging to the weft vacuum cleaner 16. It follows, from what precedes that the axis 20 of the weft vacuum cleaner has an offset D relative to the axis of the insertion channel.
  • the weft thread 1 at the end of insertion is tangentially introduced into the helical channel 39, the successive turns of which it follows.
  • the exit of the wire 1 from this helical channel 39 is also effected tangentially, towards the element 17 of the axial inlet of the vacuum cleaner 16.
  • FIGS. 5 and 6 show a device 13 comprising, upstream of the weft vacuum cleaner 16, mechanical braking means constituted by a clamp 43 which can be qualified as “negative clamp", that is to say a clamp which is normally tight.
  • the clamp 43 is placed towards the upstream end of an "S" duct 44, the downstream end of which is connected to the axial inlet 17 of the weft vacuum cleaner 16.
  • the clamp 43 comprises a small piston 45, mounted movably in a housing 46 formed in a support block 47, and pushed by a spring 48 in the direction of a fixed counterpart 49, the spring 48 bearing on a screw 50 closing the housing 46.
  • the inlet of the "S" duct 44 is arranged on the axis of the channel insertion, and taking into account the shape of this conduit 44, the axis 20 of the weft vacuum cleaner 16 is here again offset with respect to the axis of the insertion channel.
  • the weft thread 1 is introduced into the "S" duct 44, where it is sucked up and reaches the vacuum cleaner 16 directly, the path of the thread 1 when it enters being indicated by the trace in solid lines in FIG. 6.
  • the tension of this weft thread 1 engages it in the clamp 43, between the piston 45 and the counterpart 49, as indicated by the dashed line of the Figure 6, which ensures the retention of wire 1.
  • Figures 7 and 8 show a last embodiment in which, unlike the previous examples, the mechanical braking means of the weft thread 1 are located downstream of the vacuum cleaner 16 (the term “downstream” must also be understood by reference to the direction of movement of wire 1 when it is inserted).
  • the mechanical braking means designated as a whole by 51 here comprise a tubular element 23 of square section, arranged along the axis 20 of the vacuum cleaner 16 in the extension of the latter, an intermediate junction piece 52 joining the body of the vacuum cleaner 16, on the side of its outlet, with the upstream part of the tubular element 23.
  • transverse slots located in planes perpendicular to the axis 20, which open alternately in the upper face 26 and in the underside 27 of this tubular element 23.
  • a strip 28 of rectangular shape In each slot is inserted a strip 28 of rectangular shape, the width of which is equal to the width of the tubular element 23, between its two lateral faces, but the height of which is smaller that the internal height of this element, between its upper face 26 and its lower face 27.
  • Each strip 28 is fixed by gluing or welding.
  • the duct 29 is given an increasing passage section, from the end of this duct 29 situated upstream, on the side of the vacuum cleaner 16.
  • the strips 28 are separated from each other, in the direction of axis 20, by increasing intervals.
  • the first strips 28, located upstream are separated by intervals e, and the following strips 28 are separated by larger intervals E.
  • the first strips 28 have widths greater than the widths of the following strips 28.
  • the first partitions formed by these strips 28 are interrupted at a distance b from the upper face 26 or from the lower face 27 of the tubular body 23. and the following partitions are interrupted at a greater distance B from the upper face. 26 or lower 27.
  • the air flow flows inside the tubular element 23 following a path imposed by the zigzag conformation of the duct 29.
  • the front end of this thread follows the flow of air in the duct 29, as shown in Figure 7, and it engages at least a portion of the length of said conduit 29 by crossing several of the bends of this conduit.
  • the weft thread 1 is both stretched by the pneumatic suction effect, and mechanically braked on the return back by the shape of the duct 29.
EP89420169A 1988-05-10 1989-05-09 Schussfadensaug und -haltevorrichtung für Webmaschinen mit pneumatischem Schusseintrag Withdrawn EP0342135A1 (de)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
FR8806605 1988-05-10
FR8806605A FR2631351B1 (fr) 1988-05-10 1988-05-10 Aspirateur de trame pour machine a tisser sans navette, a insertion de trame pneumatique
FR8810082 1988-07-19
FR8810082A FR2634500B1 (fr) 1988-07-19 1988-07-19 Dispositif d'aspiration et de retenue du fil de trame, pour machine a tisser avec insertion de trame pneumatique

Publications (1)

Publication Number Publication Date
EP0342135A1 true EP0342135A1 (de) 1989-11-15

Family

ID=26226668

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89420169A Withdrawn EP0342135A1 (de) 1988-05-10 1989-05-09 Schussfadensaug und -haltevorrichtung für Webmaschinen mit pneumatischem Schusseintrag

Country Status (3)

Country Link
US (1) US4936353A (de)
EP (1) EP0342135A1 (de)
JP (1) JPH02175949A (de)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0493847A1 (de) * 1991-01-04 1992-07-08 Picanol N.V. Vorrichtung zum Strecken eines Schussfadens in einer Webmaschine
EP0511939A1 (de) * 1991-04-30 1992-11-04 Sulzer RàœTi Ag Pneumatische Schusseintrags-Vorrichtung und Webmaschine mit einer derartigen Vorrichtung
WO1997013017A1 (de) * 1995-10-02 1997-04-10 Picanol N.V. Vorrichtung zum strecken eines eingetragenen schussfadens, insbesondere für eine luftdüsenwebmaschine
EP1279757A1 (de) * 2001-07-23 2003-01-29 Sulzer Textil Ag Webladenvorichtung
US6799609B2 (en) 2001-07-23 2004-10-05 Sultex Ag Sley apparatus
CN101845700A (zh) * 2009-03-06 2010-09-29 普洛玛技术股份公司 用于喷气织机的具有纬纱保持装置的喷射喷嘴

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE20107885U1 (de) * 2001-05-10 2001-10-11 Dornier Gmbh Lindauer Halteeinrichtung für die Enden von Schussfäden bei einer Luftdüsenwebmaschine
US6497257B1 (en) * 2002-02-28 2002-12-24 Glen Raven, Inc. Control of fill yarn during basket weave type patterns on air jet looms
US20080271807A1 (en) * 2006-09-07 2008-11-06 Sultex Ag Method and a stretching device for the holding of a weft thread
US7748414B2 (en) * 2006-12-12 2010-07-06 Itema (Switzerland) Ltd Method and apparatus for the insertion of weft threads

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL70272C (de) * 1945-08-11 1900-01-01
FR2066363A5 (de) * 1969-10-22 1971-08-06 Strake Maschf
FR2115311A1 (de) * 1970-11-20 1972-07-07 Scheffel Walter
US3901286A (en) * 1973-08-20 1975-08-26 Rueti Te Strake Bv Weft tensioning and cutting means
FR2353664A1 (fr) * 1976-05-31 1977-12-30 Rueti Te Strake Bv Perfectionnements aux metiers a tisser
GB2081753A (en) * 1980-08-11 1982-02-24 Rueti Te Strake Bv Weft tensioning in jet looms

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4473096A (en) * 1979-08-06 1984-09-25 Leesona Corporation Weft end reception system
JPS6037247B2 (ja) * 1982-09-08 1985-08-24 豊国工業株式会社 流量制御装置

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL70272C (de) * 1945-08-11 1900-01-01
FR2066363A5 (de) * 1969-10-22 1971-08-06 Strake Maschf
FR2115311A1 (de) * 1970-11-20 1972-07-07 Scheffel Walter
US3901286A (en) * 1973-08-20 1975-08-26 Rueti Te Strake Bv Weft tensioning and cutting means
FR2353664A1 (fr) * 1976-05-31 1977-12-30 Rueti Te Strake Bv Perfectionnements aux metiers a tisser
GB2081753A (en) * 1980-08-11 1982-02-24 Rueti Te Strake Bv Weft tensioning in jet looms

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0493847A1 (de) * 1991-01-04 1992-07-08 Picanol N.V. Vorrichtung zum Strecken eines Schussfadens in einer Webmaschine
BE1005230A3 (nl) * 1991-01-04 1993-06-01 Picanol Nv Inrichting voor het strekken van een inslagdraad bij weefmachines.
EP0511939A1 (de) * 1991-04-30 1992-11-04 Sulzer RàœTi Ag Pneumatische Schusseintrags-Vorrichtung und Webmaschine mit einer derartigen Vorrichtung
US5224521A (en) * 1991-04-30 1993-07-06 Sulzer Brothers Limited Weft catcher with gripping device
WO1997013017A1 (de) * 1995-10-02 1997-04-10 Picanol N.V. Vorrichtung zum strecken eines eingetragenen schussfadens, insbesondere für eine luftdüsenwebmaschine
EP1279757A1 (de) * 2001-07-23 2003-01-29 Sulzer Textil Ag Webladenvorichtung
US6799609B2 (en) 2001-07-23 2004-10-05 Sultex Ag Sley apparatus
CN101845700A (zh) * 2009-03-06 2010-09-29 普洛玛技术股份公司 用于喷气织机的具有纬纱保持装置的喷射喷嘴
CN101845700B (zh) * 2009-03-06 2014-11-12 意达股份公司 用于喷气织机的具有纬纱保持装置的喷射喷嘴

Also Published As

Publication number Publication date
US4936353A (en) 1990-06-26
JPH02175949A (ja) 1990-07-09

Similar Documents

Publication Publication Date Title
EP0342135A1 (de) Schussfadensaug und -haltevorrichtung für Webmaschinen mit pneumatischem Schusseintrag
FR2466421A1 (fr) Procede et appareil destines a eliminer un defaut dans un fil
FR2497240A1 (fr) Dispositif a buse mobile pour insertion pneumatique de la trame sur une machine a tisser sans navette
FR2490253A1 (fr) Pince de propulsion de trame
CH644909A5 (fr) Dispositif de formation d'une reserve de fil pour metiers a tisser.
EP0053093B1 (de) Vorrichtung zum Aufdrehen einer Länge eines Textilgarnes und Vorrichtung zur Anwendung dieses Verfahrens
EP0344076B1 (de) Vorrichtung zum Entfernen eines Schussfehlers in einer Webmaschine
FR2634500A1 (fr) Dispositif d'aspiration et de retenue du fil de trame, pour machine a tisser avec insertion de trame pneumatique
BE1024064B1 (fr) Procédé de détection d'un fil de trame dans un métier à tisser du type à jet d'air.
EP0266286B1 (de) Vorrichtung zum Schusseintrag bei schützenlosen Webmaschinen
FR2514039A1 (fr) Dispositif pour dissocier des lices dans un metier a tisser
BE898097A (fr) Dispositif de formation de lisiere sur un metier a tisser sans navette.
FR2526053A1 (fr) Dispositif de reception et de controle de la trame, pour machine a tisser sans navette a insertion de trame pneumatique
FR2631351A1 (fr) Aspirateur de trame pour machine a tisser sans navette, a insertion de trame pneumatique
EP0232665B1 (de) Verfahren und Vorrichtung zum Eintragen des Schussfadens in das Webfach einer Webmaschine
CH657389A5 (fr) Peigne avec confineur incorpore, pour machine a tisser sans navette a insertion de trame pneumatique.
FR2478683A1 (fr) Metier a tisser du type a pinces
FR2506795A1 (fr) Procede et dispositif pour l'insertion de duites selon une sequence donnee sur une machine a tisser
FR2659361A1 (fr) Dispositif de detissage automatique pour machines a tisser avec organes d'insertion mecanique de la trame.
EP0759484B1 (de) Vorrichtung zum Eintrag von Schussfaden an einer Greiferwebmaschine
BE897670A (fr) Machine a tisser et procede permettant d'inserer un fil de trame dans sa foule
CH641848A5 (fr) Dispositif pour l'insertion d'un fil de trame dans la foule d'un metier a tisser.
FR2538008A1 (fr) Dispositif pour l'insertion d'un fil de trame dans la foule d'un metier a tisser
CH641220A5 (fr) Procede et dispositif pour l'insertion d'un fil de trame dans la foule d'un metier a tisser.
EP0136243B1 (de) Schussfadenmessvorrichtung für Webmaschinen

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): BE CH DE ES GB IT LI

17P Request for examination filed

Effective date: 19900322

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION HAS BEEN WITHDRAWN

18W Application withdrawn

Withdrawal date: 19910402