EP0131495B1 - Vorrichtung zum Herstellen einer Dreherfachleiste in Webmaschinen - Google Patents

Vorrichtung zum Herstellen einer Dreherfachleiste in Webmaschinen Download PDF

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Publication number
EP0131495B1
EP0131495B1 EP84401268A EP84401268A EP0131495B1 EP 0131495 B1 EP0131495 B1 EP 0131495B1 EP 84401268 A EP84401268 A EP 84401268A EP 84401268 A EP84401268 A EP 84401268A EP 0131495 B1 EP0131495 B1 EP 0131495B1
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EP
European Patent Office
Prior art keywords
oscillating
bars
lever
shed
crossing
Prior art date
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EP84401268A
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English (en)
French (fr)
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EP0131495A1 (de
Inventor
Guy Gosciniak
Pascal Scherrer
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Alsacienne de Construction de Material Textile
Alsacienne de Constructions Mecaniques SA
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Alsacienne de Construction de Material Textile
Alsacienne de Constructions Mecaniques SA
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Publication of EP0131495A1 publication Critical patent/EP0131495A1/de
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Publication of EP0131495B1 publication Critical patent/EP0131495B1/de
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    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03C—SHEDDING MECHANISMS; PATTERN CARDS OR CHAINS; PUNCHING OF CARDS; DESIGNING PATTERNS
    • D03C7/00—Leno or similar shedding mechanisms
    • D03C7/06—Mechanisms having eyed needles for moving warp threads from side to side of other warp threads

Definitions

  • the invention relates to devices for executing a false selvedge on a weaving machine by means of at least one additional warp thread and. two lathes crossed with gauze.
  • Such devices are known, in particular from French Patent No. 1,563,842, which comprise: a first oscillating lever provided with at least one tongue terminated by an eye for guiding an additional warp thread; a second oscillating lever provided with two bars movable against each other and each having at least one eye for guiding a turn wire; means for controlling the pivoting of these two levers; and means for controlling the movement of the two bars which comprise two cams actuated by a primary rotary member.
  • the mechanism which ensures the relative displacements of the two bars carried by the second oscillating lever comprises a system of cams and levers recalled by springs, so that it can accidental phase shift of these levers can result in incorrect tying and even more serious damage in the event of a spring break.
  • the object of the invention is to provide a device for executing a false selvedge of the type under consideration, which does not have the aforementioned drawbacks of known devices.
  • the means for controlling the relative movements of the guide bars of the tower wires comprise a drawer which slides, relative to the second oscillating lever, in a direction perpendicular to that bars and which is connected to the primary rotary member by an eccentric or equivalent, said drawer having two inclined control elements which cooperate respectively with agreed elements belonging to the two bars, while, in a second embodiment, the second oscillating lever is formed as a whole the two arms arranged one next to the other and whose distal ends carry the guide bars of the tower wires, while their proximal ends are mounted idly rotating side by side side, respectively, on two parts of a sleeve which rotates on the support on an axis parallel to the facade and which is linked in rotation to the primary rotary member, the two aforementioned parts of said sleeve making, with the axis of rotation of this sleeve, an acute angle, which constitutes the means for controlling the guide bars of the tower wires, the two arms being connected together
  • the device does not have, like the devices known in the past, the drawback of possibly allowing an accidental phase shift of levers for controlling the relative movements of the two bars, since the two levers which control the movements of the bars are connected between them by a purely mechanical positive transmission.
  • the devices described in this application have, compared to the aforementioned known devices, a number of additional advantages: less mechanical stress on rollers against cams, use of compression springs threaded on guide rods avoiding inadvertent tilting of levers in the event of a spring break, control of the relative movements of the bars by a mechanism which does not include a cam in the second embodiment.
  • the device according to the invention comprises only light parts and small dimensions, without sudden reciprocating movements, so that it can reach high speeds; it does not require, for itself, the use of any harness frame; finally, it allows the formation of false selvedges of any number of additional warp threads, and therefore very solid, as is necessary by the structure of certain fabrics.
  • the device for executing a false selvedge shown in FIG. 1 comprises a support 1 to be fixed on a loom next to one end of the crowd. It is understood that, for the execution of a false edge at the other end of the crowd, a similar device would be placed on the other side of the loom.
  • the false selvedges of the genus in question comprise several, for example four, additional warp threads and twice the lathe threads, ie eight in the example.
  • FIG. 1 the false selvedges of the genus in question comprise several, for example four, additional warp threads and twice the lathe threads, ie eight in the example.
  • the first oscillating lever 2 is mounted for pivoting, at an intermediate point of its length on an axis 11 fixed on the support 1; it has openings, such as 12, intended to lighten it.
  • One of its arms carries an axis 14 (see also Figures 2 and 3) on which is mounted a roller 15 in contact with a cam 16 under the action of a return spring 17 which is a helical compression spring threaded on a rod 18, one end, in the form of a yoke 19, is articulated, by a pin 22, on the end of the other arm of the oscillating lever 2, while the other end of the rod 18 slides, with of the game, in a guide 23 mounted in the support 1; the spring 17 is therefore trapped between this guide and the base of the yoke 19 so that it urges the lever 2 to pivot on the axis 11 in the direction of the arrow fl which tends to apply the roller 15 against the cam 16
  • the tongues 3 are fixed, by one of their ends, to the bent end of the oscillating lever
  • the second oscillating lever 6 is also mounted idly, at an intermediate point of its length, on a pivot 31 fixed on the support 1; it also has lightening openings such as 32.
  • One of its arms carries an axis 33 on which a roller 34 is mounted for contact with another cam 35 under the action of a return spring 36 threaded on a rod 37, one end of which in the form of a yoke 38 is articulated, by an axis 39, on the end of the other arm of this second oscillating lever 6, while the other end of the rod 37 slides, with play , in a guide 42 mounted in the support 1; the spring therefore urges the lever to pivot on the axis 31 in the direction of the arrow f2 (FIG. 1) which tends to apply the roller 34 against the cam 35.
  • the cam 35 has a stepped hub 44 (FIG. 2) which constitutes a primary rotary member and into which are force-fitted the outer rings of two ball bearings 45, 46, the inner rings of which are clamped on a fixed shouldered axis 47 itself to the support 1 by means of a nut 48 screwed onto the corresponding threaded end of said axis.
  • the first cam 16 is fixed to the cam 35 by means of two screws 41 (FIG. 1), it has a central hole of polygonal shape, for example square, threaded on a prismatic part of conjugate section of the outer surface of the hub 44 of the cam 35. Between these two cams, an eccentric 49 is tightened (to which we will return later) threaded similarly on the polygonal part of the hub.
  • the two cams have profiles of generally cylindrical shape having two diametrically opposite hollows, the hollows of one of the cams being located substantially opposite the hollows of the other in this example, in addition, the two rollers 15, 34 are located substantially in the same radial geometric plane P (FIG. 3) of the camshaft 47, while the axes 11, 31 of pivoting of the two oscillating levers 2, 6 are located respectively on either side of this geometrical plane, so that the two oscillating levers 2 and 6 pivot substantially at the same time, but in the opposite direction given the general arrangement of the assembly.
  • the branch of the second oscillating lever which already carries the roller 34 also carries the bars 7 for controlling the tower wires, by means of a housing 52 secured to said lever and formed by two half-shells assembled one on the other by screws 53.
  • the bars 7 slide in this case, in a direction parallel to all the aforementioned axes and, at the same time, parallel to the facade 51, in phase opposition, under the action of a drawer 55 ( see also Figures 5 to 9) which slides in the housing 52 in a direction perpendicular to that of the bars 7; the drawer 55 finds its place in recesses 56, 57, wider than it, in the opposite faces of the two bars and it has on its opposite faces two cam grooves 58, 59 which intersect in projection and in which are engaged, respectively, two pins 62, 63 fixed themselves respectively in the two bars 7.
  • the spacing “a” between the two cam grooves is equal to the spacing of the eyes 7 of the bars and to the spacing tabs 3 for controlling the additional warp threads.
  • the two cams 16, 35 as well as the eccentric 49 are driven together permanently and always in the same direction, by means of a transmission which comprises a toothed pulley fixed to the hub 44 of the cam 35 by means of screws 66 and a toothed belt 67 which passes over this pulley and over another pulley (not shown) itself driven from a shaft whose speed of rotation is linked to that of the crankshaft of the weaving machine.
  • a transmission which comprises a toothed pulley fixed to the hub 44 of the cam 35 by means of screws 66 and a toothed belt 67 which passes over this pulley and over another pulley (not shown) itself driven from a shaft whose speed of rotation is linked to that of the crankshaft of the weaving machine.
  • the ratio of the transmission is such that the cams and the eccentric make only one complete revolution while the crankshaft of the machine makes two revolutions, that is to say that the two oscillating levers 2 and 6 are actuated with a frequency equal to that of the formation of the crowd since the cams each have two recesses, while the eccentric 49 and the tirour 55 are actuated at a frequency which is only half of the previous one. It follows that the tongues 3 and the bars 7 plunge into the dihedral angle of the crowd at each crowd formation, while the same bars 7 only move alternately, in one direction or the other, only each new crowd and therefore find their initial position only one crowd out of two.
  • the amplitude of the oscillating movements and the location of the travel of the first oscillating lever 2 are such that the eyes 27 of the tongues 3 for guiding the additional warp threads move between the plane of one of the layers of the crowd and a position located beyond the bisector plane of the crowd; in the present example, the eyes 27 move between a low position situated in the plane of the lower tablecloth 81 (FIG. 10) of the crowd and a high position situated above the bisector plane of the crowd, but very close to this plan.
  • the amplitude of the oscillating movements and the location of the travel of the second oscillating lever 6 are such that the eyes 9 of the bars 7 for guiding the turn wires 8 move between the plane of the other layer of the crowd and a position located beyond the bisector plane of the crowd; in the present example, the eyes 9 move between a high position situated in the plane of the upper ply 83 (FIG. 10) of the crowd and a low position situated below the bisector plane of the crowd, but very close to this plan.
  • a hook 71 (FIGS. 1, 4 and 10) which is located in the vicinity of the tongues 3, is formed by the end of a long rod 72 clamped in a flange 73 mounted on a pivot 74 fixed on the support 1.
  • the rod 72 is slidably mounted in another flange 75 mounted on another pivot 76 fixed on the arm of the first oscillating lever 2 which already carries the tongues 3.
  • the hook 71 is parallel to the face 51 and undergoes an upward and downward movement. synchronism with a pivoting movement of the first oscillating lever 2; its purpose is to compensate for thread floats during the formation of the edge.
  • each normal pick 85 is inserted into the shed above an additional thread of the selvedge chain 4 and below the two turn threads 8, c 'that is to say at a time when the tongues 3 occupy their low position in Figure 10 and the bars 7, their high position.
  • the two turn threads 8 associated with each additional warp thread 4 must cross under said additional warp thread, that is to say that the relative sliding movement of the two bars 7 must occur at a time. where the tabs 3 are in the high position and the bars 7 in the low position.
  • the false selvedge known as a so-called gauze, shown in Figure 11.
  • the cams 16 and 35 are suitably wedged relative to the main shaft of the machine weave and that the eccentric 49 is properly wedged with respect to the cams.
  • the normal picks will be suitably inserted between the warp and selvedge threads and, on the other hand, the turn threads 8 will be located, during the insertion of the successive normal picks, sometimes to the right, sometimes to the left of the corresponding additional selvedge chain thread. All normal picks pass over additional selvedge warp yarn and below the lathe yarn.
  • Figures 6 to 9 are illustrated different phases of operation of the device.
  • Figures 6 and 6a correspond to the instant when the tower wires 8 cross each other below the warp wires additional by the relative sliding of the two bars 7;
  • Figures 7 and 7a show the positions of the bars 7 relative to the tongues 3 during the insertion of a normal pick 85 of fabric during manufacture; in FIG. 8, the tongues 3 are raised and the bars 7 lowered, the insertion of the pick is completed; finally, in FIGS. 9 and 9a, the bars have already slid relative to each other, crossing under the additional warp threads to prepare the gauze pitch which will form by the insertion of the following normal pick .
  • FIGS. 12 and 13 a variant of the mechanism for sliding the bars 7 is shown.
  • the drawer 55 instead of having crossed cam grooves; as in the example described above, ends in two divergent branches 81 in the form of a "V" engaged in corresponding inclined notches 82 formed in the adjacent faces of the two bars 7.
  • the reciprocating sliding movement of the drawer 55 becomes a simultaneous sliding movement of the two bars in the housing 52, the movement of each bar occurring in the opposite direction to that of the other and in a direction perpendicular to that of the movement of the control slide 55, as in the embodiment described above and under the same phase and amplitude conditions, so that the result obtained is the same.
  • first oscillating lever 102 which carries tabs 103 for controlling additional warp threads 104 (see also figure 18) for forming false edge and a second oscillating lever 106 which carries strips 107A, 107B of lathe thread control 108.
  • the first oscillating lever 102 is fixed on an axis 111 parallel to the face 151 (FIG. 16) and mounted in two ball bearings 112, 113 (FIG. 15) housed in a housing 114 forming a bearing fixed on the support 101.
  • the axis 111 is driven by an alternating pivoting movement by a control system which comprises: a crank 115 (see also figure 17) fixed on the axis 111, a roller 116 mounted for rotation on an axis 120 fixed in the end of this arm, a cam 117 against which said roller is engaged, a general shouldered control pin 118 on which the cam is fixed by means of screws 119, a toothed pulley 122 fixed against the cam by screws 123 and a toothed belt 124 which passes over the toothed pulley 122 as well as over another pulley (not shown) itself driven from a shaft whose speed of rotation is linked to that of the crankshaft of the weaving machine.
  • a control system which comprises: a crank 115 (see also figure 17) fixed on the axis 111, a roller 116 mounted for rotation on an axis 120 fixed in the end of this arm, a cam 117 against which said roller is engaged, a general shouldered control pin 118 on which the cam is fixed by
  • the ratio of the transmission is such that the cam 117, which has two bumps, makes only one complete turn while the crankshaft of the weaving machine makes four turns. With each crowd formation, the lever 102 is therefore lowered or raised.
  • the axis 118 pivots in two ball bearings 128, 129 mounted in a housing 131 forming a bearing fixed on the support 101.
  • the roller 116 is kept constantly in contact with the cam 117 under the action of a helical compression spring 133 which is threaded on a rod 134, one end of which has an articulated head 135, by a pin 136 on a curved extension 137 of the crank 115 and the part of which adjoins the other end slides with a certain operating clearance in a guide 138 fixed to support 101.
  • the second oscillating lever 106 consists of a set of two arms 106A and 106B, the distal ends of which are bent at right angles parallel to the facade so as to form the two strips 107A, 107B for controlling the tower wires, while their ends proximal are mounted on the axis 118 in a very particular way.
  • the arm 106A is integral with a housing 141 which encloses a ball bearing 142 mounted on a first part of a sleeve 143 fixed on the rotary axis 118 and, in a similar manner, the arm 106B is integral with a housing 144 which contains a ball bearing 145 mounted on the second part of the sleeve 143.
  • the outer surfaces of the two aforementioned parts of the sleeve 143 are cylindrical, but they are not coaxial with the geometric axis of said sleeve; they each make an angle "A" with said geometric axis, as indicated in FIG. 15. It follows that, for the position of axis 118 shown in the drawing, the median planes of the two ball bearings 142, 145 make an angle of value "2A" between them and intersect on the right of the figure.
  • the whole of the second oscillating lever 106 performs, at the same time, an upward and downward movement from the angular oscillation movement of the axis 111 by means of a connection which comprises: an axis 147 carried by an extension 148 of the first oscillating lever 102, a double link 149, one end of which is articulated on the axis 147 and the other end on an axis 152 engaged simultaneously in the holes of the two arms 106A, 106B.
  • the two arms 106A, 106B are elastically urged to move away from each other by a helical compression spring lEr4 threaded on a shouldered axis 155, the two ends of which are engaged respectively in two holes made in the two arms. .
  • the general arrangement is such that, for the high and low positions, respectively, of these two oscillating levers, the eyes 127 for guiding the additional warp threads and the eyes 109 for guiding the turn threads are located, in turn, in the plane of each of the two layers 181, 183 of the crowd ( Figure 16).
  • the tongues 103 When the roller 116 is in contact with a bump in the cam 117, the tongues 103 occupy their high position, while the bars 107A, 107B occupy, on the contrary, their low position, as shown in FIG. 14; the four additional warp threads 104, in their part located downstream of the eyes 127 of said tabs, lie substantially in the plane of the upper ply 183 of the normal warp threads 182 of the crowd, while the eight turn threads 108 are are found substantially in the plane of the lower layer 181 of the crowd.
  • the roller when the roller is in a hollow in the cam, the tongues 103 occupy their low position while the bars 107A, 107B occupy their high position (FIG.
  • the additional warp threads 104 are then in the plane of the lower ply 181 of the crowd while the turn threads 108 are located in the plane of the upper ply 183.
  • the arms 106A, 106B carried by their bearings 142, 145, mounted obliquely and in opposition, transmit to the two bars 107A, 107B, in a half-turn of the axis 118 , forward movements of race “a”, in opposite directions and parallel to the facade, the second half-turn of the axis corresponding to reverse and opposite movements of the two bars. It follows that a revolution of the axis 118 corresponds to a round trip of the two bars.
  • a first normal pick 185 is inserted into the shed under the additional warp thread 104, the tongues 103 being at this time in the high position, while at the same time , the bars 107A, 107B are in the low position below the pick and the tower wires 108 in the crossing position one on the other.
  • the tongues 103 descend while the bars 107A, 107B rise in synchronism with the crowd, and spread the turn wires 108 as far as possible to allow passage to the tongues 103 which bring down the additional warp threads 104 between the turn son.
  • Another pick 185 is then inserted and the cycle described above starts again, the same location of the turn threads 108 is found only every four picks 185, The additional warp threads 104 and the turn threads 108 are located alternately au- above and below successive normal picks 185.
  • a complete cycle of the false selvedge with gauze pitch extends over a formation time of four crowds, that is to say over four cycles of the weaving machine, while the false selvedge of FIG.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Looms (AREA)

Claims (11)

1. Vorrichtung zur Herstellung eines falschen Saums auf einer Webmaschine mit Hilfe mindestens eines zusätzlichen Kettfadens und zweier im Fach der Webware gekreuzter Schlingfäden, die folgende Merkmale aufweist:
- eine Tragplatte (1), die auf einer Seite des Webfaches an der Webmaschine befestigt ist,
- einen ersten, auf einer von der Tragplatte getragenen und parallel zum Fach der Webware und damit zum Schussfaden angeordneten Achse (11) schwenkbar gelagerten Schwinghebel (2), mit welchem mindestens eine Zunge (3) gekuppelt ist, an deren freiem Ende sich ein Auge (27) zur Führung eines zusätzlichen Kettfadens (4) befindet, wobei die Amplitude der Schwingungsbewegungen und die Versetzung des ersten Schwinghebels (2) derart bestimmt sind, dass sich die Augen (27) der Zunge (3) aus einer Lage zwischen den angehobenen und den gesenkten Kettfäden (83, 81) des Webfachs in eine Lage ausserhalb der Mittelebene des Webfachs bewegen,
- einen zweiten, auf einer von der Tragplatte (1) getragenen und parallel zum Fach der Webware und damit zum Schussfaden angeordneten Achse (31) schwenkbar gelagerten Schwinghebel (6), an welchem zwei parallel zum Fach der Webware und damit zum Schussfaden angeordnete und in ihrer Längsrichtung gegeneinander verschiebbare Fadenführerschienen (7, 7) mit jeweils mindestens einem Auge (9) zur Führung eines Schlingfadens (8) gelagert sind, wobei die Amplitude der Schwingungsbewegungen und die Versetzung des zweiten Schwinghebels (6) derart bestimmt sind, dass sich die Augen (9) zur Führung der Schlingfäden (8) zwischen einer Lage in der Ebene der abgesenkten Kettfäden (81) im Bereich des Webfachs und einer Lage ausserhalb der Mittelebene des Webfachs bewegen,
- Antriebsmittel (15, 16, 34, 35) zum Verschwenken der beiden Schwinghebel (2, 6) die von einer auf einer an der Tragplatte (1) sitzenden Achse (47) gelagerten, mit Nockenscheiben besetzten Hülse (44) derart bewegt werden, dass die Augen (27) der Zungen (3) zur Führung der zusätzlichen Kettfäden (4) und die Augen (9) der Fadenführerschienen (7, 7) zur Führung der Schlingfäden (8) im Gegentakt zueinander in Abhängigkeit vom Takt der Fachbildung bewegt werden,
- Antriebsmittel (49, 55,65) für die Fadenführerschienen (7, 7) zur Führung der Schlingfäden (8), welche die Drehbewegung der Drehhülse (44) in eine relative Hin- und Herbewegung der beiden Fadenführerschienen (7, 7) derart umwandelt, dass diese in der Nähe der Totpunkte des zweiten Schwinghebels (6) in entgegengesetzten Richtungen zueinander verschoben werden, wobei die Länge des Wegs und die Versetzung einer jeden Fadenführerschiene (7) derart bestimmt sind, dass sich jedes Auge (9) zur Führung eines Schlingfadens (8) abwechselnd von der einen Seite zu der anderen Seite der vertikalen Ebene bewegt, in der sich der entsprechende zusätzliche Kettfaden (4) befindet,
- wobei die Antriebsmittel zum Verschwenken der beiden Schwinghebel (2, 6) über zwei Nokkenscheiben (16 bzw. 35), die auf der gemeinsamen Drehhülse (44) befestigt sind, mit zwei von den beiden Schwinghebeln getragenen Rollen (15 bzw. 34) zusammenwirken,

dadurch gekennzeichnet, dass die Antriebsmittel zur relativen Verschiebung der Fadenführerschienen (7, 7) zur Führung der Schlingfäden (8) einen in Bezug auf den zweiten Schwinghebel (6) rechtwinklig zur Richtung der Fadenführerschienen (7, 7) bewegbaren Schieber (55) aufweisen, welcher über einen Exzenter (49) oder dergleichen mit der primären Drehhülse (44) gekuppelt ist, wobei der Schieber (55) mit zwei geneigten Steuerelementen (58, 59 oder 81) versehen ist, die jweils mit den zugeordneten, an den Fadenführerschienen (7, 7) befindlichen Elementen (62, 63 oder 82) zusammenwirken.
2. Vorrichtung zur Herstellung eines falschen Saums auf einer Webmaschine mit Hilfe mindestens eines zusätzlichen Kettfadens und zweier im Fach der Webware gekreuzter Schlingfäden, die folgende Merkmale aufweist:
- eine Tragplatte (101), die auf einer Seite des Webfaches an der Webmaschine befestigt ist,
- einen ersten, auf einer von der Tragplatte getragenen und parallel zum Fach der Webware und damit zum Schussfaden angeordneten Achse (111) schwenkbar gelagerten Schwinghebel (102), mit welchem mindestens eine Zunge (103) gekuppelt ist, an deren freiem Ende sich ein Auge (127) zur Führung eines zusätzlichen Kettfadens (104) befindet, wobei die Amplitude der Schwingungsbewegungen und die Versetzung des ersten Schwinghebels (102) derart bestimmt sind, dass sich die Augen (127) der Zunge (103) aus einer Lage zwischen den angehobenen und den gesenkten Kettfäden (181, 183) des Webfachs in eine Lage ausserhalb der Mittelebene des Webfachs bewegen,
- einen zweiten, auf einer von der Tragplatte (101) getragenen und parallel zum Fach der Webware und damit zum Schussfaden angeordneten Achse (118) schwenkbar gelagerten Schwinghebel (106), an welchem zwei parallel zum Fach der Webare und damit zum Schussfaden angeordnete und in ihrer Längsrichtung gegeneinander verschiebbare Fadenführerschienen (107A, 107B) mit jeweils mindestens einem Auge (109) zur Führung eines Schlingfadens (108) gelagert sind, wobei die Amplitude der Schwingungsbewegungen und die Versetzung des zweiten Schwinghebels (106) derart bestimmt sind, dass sich die Augen (109) zur Führung der Schlingfäden (108) zwischen einer Lage in der Ebene der abgesenkten Kettfäden (181) im Bereich des Webfachs und einer Lage ausserhalb der Mittelebene des Webfachs bewegen,
- Antriebsmittel (117, 115, 111, 147, 149, 152) zum Verschwenken der beiden Schwinghebel (102, 106), die von einer auf einer Tragplatte (101) sitzenden Achse (118) gelagerten Nockenscheibe(n) (117) derart bewegt werden, dass die Augen (127) der Zungen (103) zur Führung der zusätzlichen Kettfäden (104), und die Augen (109) der Fadenführerschienen (107A, 107B) zur Führung der Schlingfäden (108) im Gegentakt zueinander in Abhängigkeit vom Takt der Fachbildung bewegt werden,
- Antriebsmittel (142, 143, 144, 145) für die Fadenführerschienen (107A, 107B) zur Führung der Schlingfäden (108), welche die Drehbewegung der Drehhülse (118) in eine relative Hin-und Herbewegung der beiden Fadenführerschienen (107A, 107B) derart umwandelt, dass diese in der Nähe der Totpunkte des zweiten Schwinghebels (106) in entgegengesetzten Richtungen zueinander verschoben werden, wobei die Länge des Wegs und die Versetzung einer jeden Fadenführerschiene (107) derart bestimmt sind, dass sich jedes Auge (109) zur Führung eines Schlingfadens (108) abwechselnd von der einen Seite zu der anderen Seite der vertikalen Ebene bewegt, in der sich der entsprechende zusätzliche Kettfaden (104) befindet,

dadurch gekennzeichnet, dass der zweite Schwinghebel (106) aus zwei eine Einheit bildenden, nebeneinander angeordneten Hebelarmen (106A, 106B) besteht, die an ihren freien Enden die Fadenführerschienen (107A, 107B) zur Führung der Schlingfäden (108) tragen, und die an ihrem entgegengesetzten Ende auf einer Hülse (143) gelagert sind, welche auf einer von der Tragplatte (101) getragenen Achse drehbar gelagert ist, die parallel zum Fach der Webware und damit zum Schussfaden (151) angeordnet ist, und welche zum Zwecke der Rotation mit der primären Antriebseinrichtung verbunden ist, und dass die beiden Hebelarme (106A, 106B) mittels zur Drehachse spitzwinklig geneigter Lager (141, 142; 144, 145) auf der Hülse (143) angeordnet sind und die Antriebsmittel der Fadenführerschienen (107A, 107B) zur Führung der Schlingfäden (108) bilden, wobei die beiden Hebelarme (106A, 106B) durch Mittel (155) miteinander verbunden sind, die es ihnen ermöglichen, sich während der Drehung der Hülse (143) geringfügig zu nähern oder voneinander zu entfernen.
3. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, dass die beiden geneigten Steuerelemente aus sich kreuzenden Steuernuten (56, 59) bestehen, in welche an den Fadenführerschienen (7, 7) sitzende Steuerzapfen (62, 63) eingreifen.
4. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, dass die beiden geneigten Steuerelemente aus V-förmig angeordneten Steuerschienen (81) bestehen, welche in an den Fadenführerschienen (7, 7) angeordnete, geneigte Führungsnuten (82) eingreifen.
5. Vorrichtung nach Anspruch 1 oder 2, gekennzeichnet durch einen Fadenspanner (71) zum Ausgleich spannungsloser Fäden während der Saumbildung, welcher parallel zum Fach der Webware und zum Schussfaden angeordnet ist, in der Nähe der Zungen (3) zur Führung der zusätzlichen Kettfäden (4) verläuft und eine Auf-und Abwärtsbewegung synchron zur Schwenkbewegung des ersten, die Zungen (3) tragenden Schwinghebels (2) ausführt.
6. Vorrichtung nach Anspruch 5, dadurch gekennzeichnet, dass der Fadenspanner (71 ) zum Ausgleich spannungsloser Fäden während der Saumbildung von dem abgewinkelten Ende einer Stange (72) gebildet wird, deren hinteres Ende mittels einer an der Tragplatte (1) sitzenden Klemme (73) eingespannt ist und welche mittels eines an dem die Zungen (3) tragenden Schwinghebel (2) befestigten Führungsblocks (75) gleitend gelagert ist.
7. Vorrichtung nach Anspruch 2, dadurch gekennzeichnet, dass die Antriebsmittel der beiden Schwinghebel (102, 106) einerseits eine Verbindung (111, 115, 117) zwischen dem ersten Hebel (102) und der primären Antriebseinrichtung (118) und andererseits eine Verbindung (148, 149) zwischen dem zweiten und dem ersten Hebel aufweisen.
8. Vorrichtung nach Anspruch 2, dadurch gekennzeichnet, dass die Verbindung zwischen dem ersten Hebel (102) und der primären Antriebseinrichtung (118) eine auf einer an dem ersten Hebel (102) sitzenden Achse (120) gelagerte Rolle (116) aufweist, welche durch eine Feder (133) an die mit der primären Antriebseinrichtung verbundene Nockenscheibe (117) angedrückt wird.
9. Vorrichtung nach Anspruch 7, dadurch gekennzeichnet, dass die beiden Schwinghebel (102, 106) auf zwei verschiedenen, parallel zueinander verlaufenden Achsen (111, 118) schwenkbar gelagert sind, und dass die beiden Hebel mittels eines Schwingarms, der einerseits am dem Zapfen (152) an dem zweiten Hebel (106) und andererseits an dem Zapfen (147) an dem Ende (148) des ersten Schwinghebels (102) gelagert ist, gelenkig miteinander verbunden sind.
10. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, dass das Geschwindigkeitsverhältnis der Drehhülse (44) und der Fachbildungseinrichtung einerseits und das Verhältnis der Geschwindigkeit der Antriebsmittel (15, 16, 34, 35) zum Verschwenken der beiden Schwinghebel (2, 6) sowie der Antriebsmittel (49, 55, 65) der Fadenführerschienen (7, 7) zur Führung der Schlingfäden zur Geschwindigkeit der Drehhülse andererseits derart gewählt sind, dass, während das Fach zweimal gebildet wird, die beiden Schwinghebel zwei Hin- und Rückbewegungen und die beiden Fadenführerschienen gegeneinander eine einzige Hin- und Rückbewegung ausüben, wobei die Amplitude der Schwingungsbewegungen und die Versetzung des ersten Schwinghebels (2) derart bestimmt sind, dass die Augen (27) der Zungen (3) zur Führung der zusätzlichen Kettfäden zwischen der Ebene der abgesenkten Kettfäden im Bereich des Fachs und einer Zwischenstellung, die sich ganz in der Nähe der Halbierungsebene der abgesenkten und der angehobenen Kettfäden des Fachs befindet, bewegt werden, während die Amplitude der Schwingungsbewegungen und die Versetzung des zweiten Schwinghebels (6) derart bestimmt sind, dass die Augen (9) der Fadenführerschienen (7, 7) zur Führung der Schlingfäden zwischen der Ebene der angehobenen Kettfäden des Fachs und einer Zwischenstellung, die sich ganz in der Nähe der Halbierungsebene des Fachs befindet, bewegt werden.
11. Vorrichtung nach Anspruch 2, dadurch gekennzeichnet, dass das Geschwindigkeitsverhältnis der primären Antriebseinrichtung (116) und der Fachbildung einerseits und das Geschwindigkeitsverhältnis der Antriebsmittel (117, 115, 111, 147, 149, 152) zur Schwenkung der beiden Schwinghebel (102, 106) sowie der Antriebsmittel (142, 143, 144, 145) der Fadenführerschienen (107A, 107B) zur Führung der Schlingfäden zur Geschwindigkeit der primären Antriebseinrichtung andererseits derart bestimmt sind, dass, während das Fach viermal gebildet wird, die beiden Schwinghebel zwei Hin- und Rückbewegungen und die beiden Fadenführerschienen in Bezug zueinander eine einzige Hin- und Rückbewegung ausführen, wobei die Amplitude der Schwingungsbewegungen und die Versetzung der beiden Schwinghebel derart bestimmt sind, dass in den Totlagen dieser beiden Hebel deren Augen (127) zur Führung der zusätzlichen Kettfäden und die Augen (109) zur Führung der Schlingfäden abwechselnd in der Ebene der angehobenen bzw. der abgesenkten Kettfäden des Fachs liegen.
EP84401268A 1983-07-08 1984-06-20 Vorrichtung zum Herstellen einer Dreherfachleiste in Webmaschinen Expired EP0131495B1 (de)

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FR8311409 1983-07-08
FR8311409A FR2548694B1 (fr) 1983-07-08 1983-07-08 Dispositif d'execution d'une fausse lisiere a pas de gaze sur machine a tisser

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US5392819A (en) * 1993-12-10 1995-02-28 Hunshin Enterprise Co., Ltd. Planetary gear type selvage forming and cord catching device for loom
DE19654962A1 (de) * 1996-12-12 1998-06-18 Dornier Gmbh Lindauer Halte- und Positioniereinrichtung für eine Dreherkantenvorrichtung in Webmaschinen
GB2426253B (en) * 2005-05-20 2009-11-25 Griffith Textile Mach Ltd Apparatus and a method for weaving leno fabric
BR112015006014A2 (pt) * 2012-09-27 2017-07-04 Toray Industries tecido tramado e processo para a produção
KR101510671B1 (ko) 2014-03-28 2015-04-09 신한화섬(주) 직기의 경사지지장치
GB2571563B (en) * 2018-03-01 2023-01-04 Dewhurst James Ltd Woven textile and associated method of manufacture

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FR470708A (fr) * 1914-04-09 1914-09-26 Fiedler & C Gesellschaft Mit Beschraenkter Haftung Appareil pour produire les entre-bandes des pièces d'étoffe
FR1230808A (fr) * 1958-07-12 1960-09-20 Sdruzeni Podniku Textilniho St Dispositif pour la formation de lisière
FR1563842A (de) * 1968-01-18 1969-04-18
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US3952778A (en) * 1975-04-28 1976-04-27 Rockwell International Corporation Selvage forming device
CH621158A5 (de) * 1977-05-13 1981-01-15 Rueti Ag Maschf

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FR2548694B1 (fr) 1985-11-29
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EP0131495A1 (de) 1985-01-16
DE3463280D1 (en) 1987-05-27

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