EP0043441A1 - Process and apparatus for making a woven seam between two ends of a fabric - Google Patents

Abstract

The fabric ends are partially frayed, after which the weft threads (8) of one fabric end are woven into the other fabric end as warp threads and vice versa. The device for a fully automatic implementation of the method consists of two opposing mirror halves (M, M ') superimposed by a jacquard machine (5), which are arranged in a longitudinally displaceable manner on a track-like frame (G). The frayed weft threads (8) of each fabric end are attached in their new property as warp threads to cords of the jacquard machine and form seam weaving compartments (11, 11 ') in the cycle of the weaving process, into which the original warp threads (10, 10 ') in their new property as weft threads are gradually introduced and inserted by gripping and guiding members (32, 43, 44, 58, 60, 61, 62). The separation, picking up and guiding of a weft thread can be done in one go by an intermittent air flow. Since the length of the frame is practically unlimited, tissue ends of any width can be woven together with this device.

Description

The invention relates to a method for creating a woven seam as a connection between two open fabric ends, in particular for the purpose of producing an endless fabric tape, e.g. for the paper industry. Furthermore, the invention relates to an apparatus for performing this method.

So far, the creation of such woven seams has been carried out exclusively by hand, over the entire width of the fabric tape and in a length of approx. 100 to 200 mm frays the wefts and weaves the wefts of one end of the fabric band as warp threads into the other end of the fabric band.

Since the distance between the individual warp threads is usually very small - sometimes less than 100 A - weaving in by hand is tedious and lengthy. In particular, it is very difficult for the seam weaver to securely grasp the next thread. Thread by thread he has to make sure that he has actually got the right thread. If, for example, he has gripped the thread after the next one and has woven it in again, a so-called cross lay occurs, which makes the entire fabric worthless and must be eliminated in a laborious repair process. In practice, many hours are lost in weaving back and eliminating backstrokes.

The whole manual process when weaving a seam together on an 8 m fabric tape made of 0.18 mm threads (35 threads per cm) takes an average of approx. 600 working hours. In addition, this seam weaving requires careful training (2 years of training) and can only be done by people of great skill and dexterity. The seam weaving process requires a great deal of concentration from the seam weavers and also strains the eyes and the general state of health, which is particularly affected by the forced poor posture. Back pain and intervertebral disc damage are part of everyday working life for seam weavers.

The group of seam weavers is extremely elitist because of the special requirements and the long training period, which in practice often extends well into actual seam weaving - many seam weavers only give up after they have worked for months after completing their training period. The remuneration of the seam weavers is therefore much higher than the remuneration of the skilled workers who are otherwise employed in weaving technology.

From this representation it is clear that the cost of a woven seam of the type described is extremely high. Due to the high cost of the woven seams, extensive stockkeeping cannot be expected of the paper industry, not least because the length, structure and mesh size are often required differently from case to case. On the other hand, the weaving industry is not always able to deliver new fabric tapes at short notice. In addition to the long delivery times caused by work, there are special training and other personnel requirements for the seam weavers, which cannot be easily replaced by other personnel. Is a seam weaver e.g. sick or on vacation, the work process is inevitably slower.

For the paper industry, the problem of delivery time comes to the pure question of cost: if a new fabric tape is required at short notice, it may be that it is not available at short notice. The production in the paper mill in question must then either be changed over or shut down at all until the new fabric band is available.

Understandably, the industry has made many efforts to mechanize the seam weaving process described, but so far without success. Devices have been created only for the stretching of the fabric and for the formation of the seam weaving compartments, by means of which the manual work has been facilitated, cf. HASLMEYER "Textile Practice", 206/1972. But even these devices have not been able to remotely eliminate the disadvantages of manual work described above. The number of working hours listed above, for example, is already related to the use of the devices mentioned.

The present invention has for its object to mechanize and automate the seam weaving process described above and to create a seam weaving machine which can be operated effortlessly by all textile workers without special training. The seam weaving machine according to the invention is intended to reliably produce weave seams for all types of fabric in question, without causing cross flaps and other weaving errors.

This object of the invention is achieved in that after each end of the fabric has been frayed, a weave strip is formed, which is partially separated from the entire fabric and connected to it only via the original warp threads, now weft threads, by the now warp threads, originally weft threads, on the outer edge of the free from the Tissue protruding now-weft threads, originally warp threads, are partially balanced in such a way that the order of the now weft threads, originally warp threads, which is predetermined by the weaving process is maintained and these now weft threads are released from the weave in groups or individually by machine during the suture weaving process Then, spatially separated from each other by means of a separator, in compliance with the weaving order one after the other by means of step-controlled gripping and guiding organs brought to and guided through the respective open seam weaving compartment, pushed to the weaving seam and to be integrated by forming a new seam weaving compartment in such a way that that from a right and a left weft pair of wefts formed on a certain distance in the seam in the double layer, the seam weaving machine and the two fabric ends to be woven together of the entire fabric in relation to each other a preferably Schr Execute partially controlled relative movement in that the individual steps of the relative movement correspond to the respective progress of the seam weaving process. The steps of the relative movement can either be gradual or continuous. A special needle roller can preferably insert the weft thread in the seam weaving compartment instead of the weaving sley. The specified weaving order of the now weft threads, originally warp threads, can be connected to one another at their outer edges by means of gluing, soldering or welding of the threads to be woven in each case and is thereby retained. It is guaranteed by weaving in non-woven auxiliary warp threads on the outer edges of the weft threads, originally warp threads, which now protrude from the fabric.

In a preferred embodiment of the invention, the thread to be woven in is picked up and guided by means of a three-dimensionally controlled air flow.

After each compartment change, a cutting device aligned against the woven seam can move into the open seam weaving compartment and cut off the respective weft thread or the respective thread pair individually or together. The now warp threads, originally weft threads, can be raised in three stages and, consequently, two compartments can arise simultaneously, through which a weft thread is passed, but in the opposite direction. To carry out the method according to the invention, the device is composed of two opposing mirror-image and otherwise identical machine halves and has on each of these halves a number of auxiliary lifting elements for the mechanical release of the now weft threads, originally warp threads. These auxiliary elements are fastened to cords of a jacquard machine common to both machine halves, the released weft threads being separated individually from the other weft threads by means of a separator controlled in each cycle of the weaving process. Then a gripping member, which also works in the cycle of the weaving process, grips the free end of the weft thread emerging in each case and brings it to the newly formed seam weaving compartment in the cycle of the weaving process, where the weft thread end is picked up by a plug arm provided with a weft thread clamping device and is passed through the seam weaving compartment . The device can be slidably mounted on the tissue jig. Each separator can be thread-like composed of a series of alternately thinner and thicker disks plugged onto a common separator shaft, in that the thicker disks have a thickness which corresponds to the thickness of the threads to be interwoven, and the diameter difference between the thicker and the thinner disks is sufficient in order to take up the structure of the threads to be woven between each pair of discs, the first disc viewed against the weaving direction serving as the run-in disc and the last disc viewed in the same direction serving as the output disc and both the thinner slices and the thicker slices are cut on the side and pre-bent in a thread-like manner. In a simpler embodiment, each separator can only have a single thicker disk, which is clamped between a ring provided with a metric thread on its surface, the inlet disk and the outlet disk. However, each separator is preferably composed of a wind tunnel consisting of aerodynamically shaped guide plates and an air nozzle projecting into the latter, the air flow generated by the air nozzle, deflected three-dimensionally in the wind tunnel, acting as a gripper and guide for the weft thread to be woven in. In the case of difficult fabric structures, for example double-layer fabrics, metal fabrics and the like, the weft thread released from the weaving of the web strip can be picked up by a needle separator rotating in the cycle of the weaving process and equipped with at least one separator needle, the separator needle of which picks up the weft thread and the others Weft separated.

In a particularly favorable embodiment of the invention, the weft thread to be woven is picked up by a tubular plug-in arm which is controlled in the course and in the rhythm of the seam weaving process, can be pivoted out on a two-leg swivel arm and can be moved back and forth through the seam weave compartment formed, at least one of which in its tube interior Free end of kinked and attached to the swivel arm steel wire is arranged to be displaceable relative to the plug-in arm and clamps the weft thread to be woven in between the bent part and the open tube end of the plug-in arm and releases the weft thread after pulling out in the cycle of the seam weaving process and swiveling the plug-in arm .

The insertion of the individual weft thread in the seam weaving compartment is preferably carried out by means of a rotatably mounted step-by-step in the frame, e.g. Needle roller driven by a stepper motor, on the rotary shaft of which two opposing rows of needles consisting of a plurality of flexible elastic needles are arranged helically in such a way that the helical line of one row of needles is right-handed and that of the second row of needles is left-handed. However, the addition can also be done by means of e.g. Z-shaped needles take place, which are arranged parallel to each other and longitudinally displaceable on a guide bed, protrude at one end into a curved groove of a backdrop that can be moved back and forth in the cycle of the weaving process, reach into the seam weaving compartment with the bent free needle part and there one of the curve shape the cam groove performs the corresponding slide-in movement.

• Fig. 1 Gesamtansicht der erfindungsgemäßen, aus zwei Maschinenhälften und einer Jacquardmaschine bestehenden, auf einem gemeinsamen Gestell gelagerten Nahtwebmaschine, in perspektivischer Sicht,
• Fig. 2 die Nahtwebmaschine Fig. 1, schematisch und in einer Draufsicht, jedoch ohne Jacquardmaschine,
• Fig. 3 den Schnitt A-A der Fig. 2,
• Fig. 4 den Scheibenseparator (Teilansicht) in einer Seitenansicht,
• Fig. 5 den Schnitt B-B der Fig. 4,
• Fig. 6 die Einlaufscheibe (linkes Bild), die dickere Separatorscheibe (Bild Mitte) und die dünnere Separatorscheibe (Bild rechts),
• Fig. 7 eine Prinzipskizze des Scheibenseparators Fig. 4, die Funktion des Scheibenseparators in der Gewebeaufspannung zeigend, in perspektivischer Sicht, wobei das Sonderbild im linken Kreis die Struktur des normalen Gewebes und das Bild in dem rechten Kreis eine Einbindestelle eines Schußfadenpaares in der Webnaht zeigen (stark vergrößert),
• Fig. 8 die Anordnung einer Weblade im Gestell der Nahtwebmaschine, schematisch und in perspektivischer Sicht,
• Fig. 9 einen aus nur drei Separatorscheiben und einem metrischen Gewindegang bestehenden kürzeren Scheibenseparator mit Hilfshubelementen, schematisch und in perspektivischer Sicht (die Sonderfiguren in den Kreisen wie bei Fig. 7 beschrieben),
• Fig. 10 eine Luftdüse eines Luftstromseparators mit Hilfshubelementen, schematisch und in perspektivischer Sicht (Sonderfiguren wie bei Fig. 7),
• Fig. 11 eine schematische Draufsicht der gesamten Nahtwebmaschine mit den beiderseitigen, den jeweiligen Luftstrom dreidimensional umlenkenden Windkanälen (die Luftdüse Fig. 10 nicht sichtbar); die an beiden Seiten eingezeichneten Gewebeausschnitte deuten das zu verwebende Gesamtgewebe an, das voll ausgezeichnet die Darstellung der Maschine unübersichtlich gestalten würde,
• Fig. 12 den Schnitt C-C der Fig. 11, die Luftdüse Fig. 10 und die Führungsbleche des Windkanals Fig. 11 im Zusammenhang zeigend,
• Fig. 13 eine Prinzipskizze der Nahtwebstelle mit Nadelseparator, schematisch und in perspektivischer Sicht,
• Fig. 14 einen Greifarm zum Aufgreifen und Durchbringen des Schußfadens durch das Nahtwebfach in einer Seitenansicht,
• Fig. 15 den Greifarm Fig. 14 in einer Draufsicht,
• Fig. 16 den Greifarm Fig. 14 von rückwärts gesehen,
• Fig. 17 eine vergrößerte Darstellung des Vorderendes des Greifarmes Fig. 14 mit Stahldrähten (Greifdrähten) in der Offenstellung,
• Fig. 18 den Schwenkarmteil des Greifarms Fig. 14, in einer vergrößerten Seitenansicht und teilweise im Schnitt,
• Fig. 19 die beiden abgebogenen und geknickten Stahldrähte des Greifarms, vergrößert,
• Fig. 20 das Vorderende des Greifarms mit Kunststoffstopfen, vergrößert und in einem Längsschnitt,
• Fig. 21 eine Nadelwalze zum Beischieben der Schußfäden im Nahtwebfach, vergrößert und in perspektivischer Sicht,
• Fig. 22 die Teilansicht eines Führungsbettes mit einer Z-Nadel und dem zugehörigen Schrittmotor, das Beischieben eines Schußfadens im Nahtwebfach zeigend, teilweise im Schnitt,
• Fig. 23 die die Bewegung der Z-Nadel steuernde Kurvenkulisse,
• Fig. 24 eine Teilansicht des Führungsbettes Fig. 22 in einer Draufsicht und teilweise im Schnitt,
• Fig. 25 die Querbleche und Abstandshülsen des Führungsbettes Fig. 22,
• Fig. 26 ein im Führungsbett gelagertes Führungselement für die Kulissenführungsstangen, in einer Draufsicht,
• Fig. 27 die Kurvenkulisse Fig. 23 mit Umlenkrolle, in einer Seitenansicht,
• Fig. 28 eine Prinzipskizze zweier über eine Summierrolle zusammenwirkender Jacquardmaschinen mit einer an der Drehachse der Summierrolle verbundenen und über eine Umlenkrolle sowie über eine Zugfeder an dem Gestell der Nahtwebmaschine befestigten und das Haupthubelement aufnehmenden Schnur,
• Fig. 29 eine Prinzipskizze einer doppelten Nahtwebfachbildung, schematisch und in perspektivischer Sicht,
• Fig. 30 einen Querschnitt durch eine in der doppelten Nahtwebbildung entstandenen Webnaht (vergrößert),
• Fig. 31 eine Ansicht der Schneide- und Biegeeinrichtung für das Anschneiden und Verbiegen der Einlaufscheiben, der dünneren Scheiben und der dickeren Scheiben Fig. 6.

An exemplary embodiment of the invention is illustrated and explained below using the figures. Show it:

• 1 general view of the seam weaving machine according to the invention, consisting of two machine halves and a jacquard machine, mounted on a common frame, in a perspective view,
• 2 shows the seam weaving machine FIG. 1, schematically and in a top view, but without a jacquard machine,
• 3 shows the section AA of FIG. 2,
• 4 the disc separator (partial view) in a side view,
• 5 shows the section BB of FIG. 4,
• 6 the inlet disk (left picture), the thicker separator disk (middle picture) and the thinner separator disk (right picture),
• Fig. 7 is a schematic diagram of the disc separator Fig. 4, showing the function of the disc separator in the fabric stretching, in a perspective view, the special image in the left circle showing the structure of the normal fabric and the image in the right circle a binding point of a pair of weft threads in the woven seam (greatly enlarged),
• 8 shows the arrangement of a sley in the frame of the seam weaving machine, schematically and in perspective view,
• 9 shows a shorter disk separator with auxiliary lifting elements, consisting of only three separator disks and a metric thread, schematically and in perspective (the special figures in the circles as described in FIG. 7),
• 10 shows an air nozzle of an airflow separator with auxiliary lifting elements, schematically and in perspective (special figures as in FIG. 7),
• FIG. 11 shows a schematic top view of the entire seam weaving machine with the wind channels on both sides which deflect the respective air flow three-dimensionally (the air nozzle FIG. 10 is not visible); the fabric cutouts drawn on both sides indicate the overall fabric to be woven, which would make the presentation of the machine unclear,
• 12 shows the section CC of FIG. 11, the air nozzle FIG. 10 and the guide plates of the wind tunnel FIG. 11 in context,
• 13 is a schematic diagram of the seam weaving site with needle separator, schematically and in perspective view,
• 14 is a side view of a gripper arm for picking up and passing the weft thread through the seam weaving compartment,
• 15 the gripper arm FIG. 14 in a top view,
• 16 the gripper arm FIG. 14 seen from the rear,
• 17 is an enlarged view of the front end of the gripping arm FIG. 14 with steel wires (gripping wires) in the open position,
• 18 the swivel arm part of the gripping arm FIG. 14, in an enlarged side view and partly in section,
• 19 shows the two bent and kinked steel wires of the gripping arm, enlarged,
• 20 the front end of the gripper arm with plastic stopper, enlarged and in a longitudinal section,
• 21 shows a needle roller for pushing in the weft threads in the seam weaving compartment, enlarged and in a perspective view,
• 22 shows the partial view of a guide bed with a Z needle and the associated stepping motor, showing the insertion of a weft thread in the seam weaving compartment, partly in section,
• 23 shows the curve that controls the movement of the Z needle,
• 24 is a partial view of the guide bed FIG. 22 in a plan view and partially in section,
• 25 the cross plates and spacer sleeves of the guide bed FIG. 22,
• 26 is a top view of a guide element mounted in the guide bed for the link guide rods,
• 27 the curve backdrop FIG. 23 with deflection roller, in a side view,
• 28 shows a schematic diagram of two jacquard machines interacting via a summing roller with a cord connected to the axis of rotation of the summing roller and fastened to the frame of the seam weaving machine and via a tension spring and receiving the main lifting element,
• 29 is a schematic diagram of a double seam weaving compartment formation, schematically and in perspective view,
• 30 shows a cross section through a woven seam created in the double seam web formation (enlarged),
• 31 is a view of the cutting and bending device for cutting and bending the run-in disks, the thinner disks and the thicker disks, FIG. 6.

• M obere Maschinenhälfte
• M' untere Maschinenhälfte
• G Gestell
• 1 Trageprismen für das Gestell
• 2 Führungsschienen für das Gestell
• 3 Schrittmotor für das Gestell G
• 4 Textilbahn
• 5 Jacquardmaschine
• 6 Weblade
• 7 Gewebe
• 8 Kettfäden (ursprünglich Schußfäden)
• 9 Aufspannvorrichtung
• 10 Schußfäden (ursprünglich Kettfäden)
• 11 Nahtwebfächer
• 12 Schußfaden, zur Einwebung anstehend
• 13 Webnaht
• 14 Scheibenseparator
• 15 Separatorwelle
• 16 Einlaufscheibe
• 17, 18 Gewindeteil, bestehend aus dünnen Scheiben 17 und dicken Scheiben 18
• 19 Auslaufscheibe
• 20 Schneide- und Biegeeinrichtung
• 21 Führungsstangen am Separator 14
• 22 Bund der Separatorwelle 15
• 23 Aufspannring
• 24 Aufspannmutter
• 25 Schrittmotoren der Scheibenseparatoren 14
• 26 Einschnitt in den Scheiben 16 bis 18
• 27 Messerschneide an der Einlaufscheibe 16
• 28 erste Schußfadenführung
• 29 zweite Schußfadenführung
• 30 besonderer Gewindegang an der Auslaufscheibe 19
• 31 Einfräsung an der Auslaufscheibe 19
• 32 Greifer
• 33 Schrittmotoren für die Greifer 32
• 34 Ausleger an den Führungsstangen 35
• 35 Führungsstange
• 36 Schrittmotoren für die Führüngsstangen 35
• 37 Gewebeführung
• 38 zusätzliche Bindung der Schußfäden 10 "Webstreifen" genannt
• 39 thermische Schneideeinrichtung am Gestell G
• 40 Paßfeder
• 41 Verzahnung an den Führungsstangen
• 42 Zahnräder Schrittmotor-Führungsstange
• 43 Steckarm am Gestell G
• 44 Schußfadenklemmeinrichtung am Steckarm 43
• 45 Verzahnung der Steckarme 43
• 46 Schrittmotoren der Steckarme 43
• 47 Schrittmotoren für Weblade
• 48 Schrittmotoren für Aufwickelrollen 49
• 49 Aufwickelrollen für abfallenden Webstreifen 38
• 50 Klemmeinrichtung für Webstreifen 38
• 51, 52 Zahnverbindung Gestell G - Aufspannvorrichtung 9
• 53 einfacher Scheibenseparator
• 54 Ring des Scheibenseparators 53
• 55 metrisches Gewinde am Ring 54
• 56 Hilfskettfäden vom Webstreifen 38
• 57 Hilfs-Hubelemente an der Jacquardmaschine 5 angelenkt
• 58 Luftdüse zum Separieren und Führen des Schußfadens 10
• 59 Webstreifenführung
• 60, 61, Leitbleche (Windkanal) für die Führung des 62 Luftstrahls
• 63 Hilfsfach, aus Hilfskettfäden 56 gebildet
• 64 Magnetventil der Luftdüse 58
• 65 Luftzufuhrleitung für die Luftdüse 58
• 66 Gewicht
• 67 Seil
• 68 Abwickelrolle
• 69 Umlenkrolle
• 70 Nadelseparator
• 71 Stahlnadeln am Nadelsepara-tor 70
• 72 Sacklochbohrung im Schiebeelement 74
• 73 durchgehende Gewindebohrung im Schiebeelement 74
• 74 Schiebeelement
• 75 Führungsrohr am Schwenkarm 76
• 76 Schwenkarm
• 77 Längsnut im Schwenkarm 76
• 78 Bolzen am Schiebeelement 74
• 79 Grundplatte verbunden mit Zahnstange 45
• 80 Mutter
• 81 Bolzen an Grundplatte 79
• 82. Zugfeder
• 83 Bolzen im Schwenkarm 76
• 84 Bolzen an der Grundplatte 79
• 85 Anschlagbolzen an der Grundplatte 79
• 86 Innengewinde im Führungsrohr 75
• 87 Druckfeder im Führungsrohr 75
• 88 Mutter zum Sichern des Gewindestiftes 89
• 89 Gewindestift im Führungsrohr 75
• 90, 91 Stahldrähte, die die Schußfadenklemmeinrichtung 44 bilden
• 92 Klemmplättchen für die Stahldrähte 90, 91
• 93 Kunststoffstopfen im Steckarm 43
• 94 Zahnstangenführung für Zahnstange 45
• 95 Gewinde am Anschlag 98
• 96 Dämmaterial am Anschlag 98
• 97 Mutter zur Sicherung des Anschlags 98
• 98 Anschlag
• 99 vorderer Anschlagbolzen in Grundplatte 79
• 100 Nadelwalze
• 101 Welle der Nadelwalze 100
• 102 Nadeln der Nadelwalze 100
• 103 Schrittmotor der Nadelwalze 100
• 104 Z-Nadeln
• 105 Führungsbett
• 106 Grundplatte des Führungsbettes 105
• 107 Führungsstangen des Führuhgsbettes 105
• 108 Bohrungen der Bleche 107
• 109 Bleche des Führungsbettes 105
• 110 Abstandshülsen am Führungsbett 105
• 111 Kulisse am Führungsbett 105
• 112 Nut in der Kulisse 111
• 113 Führungsstangen der Kulisse 111
• 114 Druckfeder am Schiebeelement 115
• 115 Schiebeelement
• 116 Zahnriementrieb für die Kulisse 111
• 117 Schrittmotor.für die Kulisse 111
• 118 Rolle an Kulisse 111
• 119 Schnüre der Jacquardmaschine 5
• 120 Summierrolle
• 121 Drehachse der Summierrolle 120
• 122 Schnur der Drehachse 121
• 123 Haupthubelement
• 124 Umlenkrolle für Schnur 122
• 125 Zugfeder
• 126 zweite Jacquardmaschine
• 127 gemeinsame Drehwelle der Jacquardmaschinen 5 und 126
• 128 Schnüre der Jacquardmaschine 126

The reference numbers given on the figures indicate:

• M upper machine half
• M 'lower machine half
• G frame
• 1 carrying prisms for the frame
• 2 guide rails for the frame
• 3 stepper motor for frame G
• 4 textile web
• 5 jacquard machine
• 6 drawer
• 7 tissues
• 8 warp threads (originally weft threads)
• 9 clamping device
• 10 weft threads (originally warp threads)
• 11 seam compartments
• 12 weft, pending for weaving
• 13 woven seam
• 14 disc separator
• 15 separator shaft
• 16 washer
• 17, 18 threaded part, consisting of thin washers 17 and thick washers 18
• 19 outlet disc
• 20 cutting and bending device
• 21 guide rods on the separator 14
• 22 collar of the separator shaft 15
• 23 clamping ring
• 24 clamping nut
• 25 stepper motors of the disc separators 14
• 26 incision in discs 16 to 18
• 27 Knife edge on the inlet disk 16
• 28 first weft guide
• 29 second weft guide
• 30 special thread on the outlet disc 19
• 31 Milling on the outlet disc 19
• 32 grippers
• 33 stepper motors for the grippers 32
• 34 Booms on the guide rods 35
• 35 guide rod
• 36 stepper motors for the guide rods 35
• 37 tissue guide
• 38 additional binding of the weft threads 10 called "woven strips"
• 39 thermal cutting device on frame G
• 40 key
• 41 teeth on the guide rods
• 42 gears stepper motor guide rod
• 43 plug-in arm on frame G
• 44 weft thread clamping device on plug-in arm 43
• 45 Interlocking of the plug-in arms 43
• 46 stepper motors of the plug-in arms 43
• 47 stepper motors for the sley
• 48 stepper motors for take-up reels 49
• 49 take-up rolls for sloping woven strips 38
• 50 clamping device for woven strips 38
• 51, 52 toothed connection frame G - clamping device 9
• 53 simple disc separator
• 54 Ring of the disc separator 53
• 55 metric thread on ring 54
• 56 auxiliary warp threads from the woven strip 38
• 57 auxiliary lifting elements articulated on the jacquard machine 5
• 58 Air nozzle for separating and guiding the weft thread 10
• 59 woven strip guide
• 60, 61, baffles (wind tunnel) for guiding the 62 air jet
• 63 auxiliary compartment, formed from auxiliary warp threads 56
• 64 Air valve solenoid 58
• 65 Air supply line for the air nozzle 58
• 66 weight
• 67 rope
• 68 unwinding roll
• 69 pulley
• 70 needle separator
• 71 steel needles on the needle separator 70
• 72 blind hole in sliding element 74
• 73 continuous threaded hole in the sliding element 74
• 74 sliding element
• 75 Guide tube on the swivel arm 76
• 76 swivel arm
• 77 Longitudinal groove in the swivel arm 76
• 78 bolts on sliding element 74
• 79 Base plate connected to rack 45
• 80 mother
• 81 bolts on base plate 79
• 82. Tension spring
• 83 bolts in the swivel arm 76
• 84 bolts on the base plate 79
• 85 stop bolts on the base plate 79
• 86 internal thread in the guide tube 75
• 87 compression spring in the guide tube 75
• 88 nut for securing the set screw 89
• 89 Grub screw in the guide tube 75
• 90, 91 steel wires that form the weft clamp 44
• 92 clamping plates for steel wires 90, 91
• 93 plastic plugs in the plug-in arm 43
• 94 Rack guide for rack 45
• 95 thread at the stop 98
• 96 insulation material at the stop 98
• 97 nut for securing the stop 98
• 98 stop
• 99 front stop pin in base plate 79
• 100 needle roller
• 101 needle roller shaft 100
• 102 needles of the needle roller 100
• 103 stepper motor of the needle roller 100
• 104 Z needles
• 105 guide bed
• 106 Base plate of the guide bed 105
• 107 guide rods of the guide bed 105
• 108 holes in the sheet 107
• 109 sheets of the guide bed 105
• 110 spacers on the guide bed 105
• 111 backdrop at the guide bed 105
• 112 groove in the backdrop 111
• 113 guide rods of the backdrop 111
• 114 compression spring on sliding element 115
• 115 sliding element
• 116 timing belt drive for the backdrop 111
• 117 stepper motor. For the backdrop 111
• 118 Role on backdrop 111
• 119 cords of the jacquard machine 5
• 120 summing roll
• 121 axis of rotation of the summing roller 120
• 122 Cord of the axis of rotation 121
• 123 main lifting element
• 124 pulley for cord 122
• 125 tension spring
• 126 second jacquard machine
• 127 common rotary shaft of jacquard machines 5 and 126
• 128 cords of the Jacquard machine 126

The seam weaving machine according to the invention consists of two opposite mirror-image and otherwise identical machine halves M, M '. As a result, the elements of this machine half are each provided with the same reference number, the reference number of the half shown in FIG. 2 being provided with a dash. In the following description of the machine half M, M ', only the one element in question is described and numbered; the description and numbering automatically apply to the same element of the other machine half.

The two machine halves M, M 'are connected to one another via a common frame G. The frame G is slidably supported on the guide rails 2 by means of support prisms 1 and can be shifted from one end of a textile web 4 to the other end by means of a stepping motor 3, normally 4 to 8 m. Both machine halves M, M 'have in common a jacquard machine 5 fastened to the frame G and a sley 6.

The fabric ends of a fabric 7 to be woven together are stretched to the right and left of the clamped warp threads 8 onto a tensioning device 9. The frame G with the two machine halves M, M 'and the jacquard machine is slidably mounted on this clamping device 9. The fabric ends are clamped in such a way that the corresponding weft threads 10 (warp threads in the previous weaving process) of one fabric end lie opposite the weft threads 10 ^{1 of} the other fabric end. The seam weaving compartments 11 to be formed one after the other are formed with the jacquard machine 5. The weft thread 12 to be woven is inserted into the corresponding seam weaving compartment 11 with the aid of the seam weaving machine M, M 'according to the invention, pushed in with the sley 6 and by forming a new one corresponding to the seam weaving process Seam weaving compartment 11 'integrated. In this newly formed seam weaving compartment 11 ', the weft thread 12' to be woven is introduced with the aid of the seam weaving machine M ', M, pushed in with the sley 6 and integrated by forming a new seam weaving compartment 11. This sequence of operations of inserting the wefts 12, 12 'in each case for weaving with the help of the seam weaving machine M, M' into the correspondingly successively formed seam weaving compartments 11, 11 'is repeated until the weaving seam 13 is completed.

The symmetrical halves M, M 'of the seam weaving machine shown in FIGS. 2 and 3 are constructed symmetrically to the weave seam 13. In this seam weaving machine, weft threads 12, 12 'are spatially separated with the aid of disk separators 14. The workflow is identical on the right and left side of the seam weaving machine M, M '.

Each disk separator 1 ₄ rotatably mounted in the frame G, shown in FIGS. 4 and 5, essentially consists of a separator shaft 15, an inlet disk 16, a threaded part 17, 18 and an outlet disk 19. The threaded part 17, 18 consists of individual disks different thickness and outer diameter, the thinner disks 17 having a larger diameter and the thicker disks 18 having a smaller diameter. The thickness of the washers 18 is dependent on the diameter of the weft threads 10 to be processed, and the thickness of the larger washers 17 is dependent on the spacing of the individual warp threads, now weft threads 10, in the fabric 7 from one another. The difference in diameter between the thinner and thick washers 17, 18 must be so large that the weft threads 10 structured by the weaving process without deformation of the structure into the individual threads of the thread formed from the washers 17, 18 fit in.

The thread-like structure 17, 18 arises from the fact that the individual disks 17, 18 are correspondingly cut and pre-bent at their outer edges. This deformation of the disks 17, 18 can take place by means of a cutting and bending device 20, which can be seen in FIG. 31. In the course of the assembly of the disks 16 to 19 on the separator shaft 15, a thread is thus created, on which the weft threads 10 individually drawn in by the inlet disk 16 are transported only in a certain rotational range of the disk separator 14. So that such a thread-like structure can be achieved, the individual disks 16 to 19 must be attached to the separator shaft 15 and additionally to the guide rods 21 in the following manner.

First comes the outlet disk 19, which is supported on a collar 22 of the separator shaft 15. Following the outlet disk 19 comes first a thick disk 18, then a thin disk 17 etc. So many thin and thick disks 17, 18 are pushed onto the separator shaft 15 and respective guide rod 21 in the order described until the required thread length is reached is. Finally, the inlet disk 16 is pushed onto the separator shaft 15 and guide rods 21. After the individual disks 16 to 19 are placed on the separator shaft 15, they are clamped against the collar 22 formed on the separator shaft 15 by means of a clamping ring 23 and a clamping nut 24. The desired transport of the weft threads 10 takes place on this thread-like structure 16 to 19 in a certain rotational range. One of the guide rods 21 is flattened on a surface line and lies with the flattened side against the separator shaft 15, cf. Fig. 5. This measure serves the purpose of always ensuring that the thread pitch is always the same. ₁

The shape of the face milling on the clamping ring 23 and the outlet disk 19 depends on the required thread pitch and direction of the pitch and thus again on the diameter of the weft threads 10 and the direction of rotation of the disk separator 14.

The disc separator 14 of the machine half M makes a clockwise rotation limited to 360 ° and then intermittent, while the disc separator 14 'carries out the same counterclockwise rotation, as seen in the weaving direction. This rotary movement, which interrupts after each revolution, is generated by a stepper motor 25 (FIG. 2). The respective direction of inclination of the thread-like structure 16 to 19 on the disk separator 14 is achieved by corresponding milling on the face side on the clamping ring 23 and the outlet disk 19 and by corresponding cutting and pre-bending of the disks 16, 17, 18. The pitch direction of the thread on the outlet disk 19 corresponds to the pitch of the remaining thread 16 to 18.

The individual pulling in of the weft threads 10 on the disk separator 14 is achieved in that the inlet disk 16 provided with an incision 26 made by the cutting and bending device 20 is constructed in exactly the same way as the thin disks 17 of the thread-like structure 17, 18, only with the difference is that a segment is cut away from the incision 26 on the inlet disk 16 parallel to this incision 26 (shown in FIG. 6), so that a kind of knife edge 27 is created. This measure interacts with a first weft thread guide 28 which is responsible for the entry of the weft threads 10 and with a second weft thread guide 29 which serves for the outlet. Each weft guide 28, 29 consists of one with a knife edge aligned against the separator 14 Provided, both in height and axially displaceable bar, the first weft guide 28 is longer than the second weft guide 29, while this outflows the first weft guide 28 by a length that corresponds exactly to the width of the outlet disc 19. Using these devices and the fact that the inlet disk 16 is at a predetermined distance from the first of the thinner disks 17 (the disks with a larger diameter), it is caused that only one weft thread 10 per revolution (360 °) of the disk separator 14 is wound on the latter can be. The outlet disk 19 located at the end of the thread-like structure 16 to 18 is such that a spatial separation of the weft thread 12 to be woven in is achieved compared to the weft threads 10 still located on the threads. This spatial separation takes place in the axial direction by means of a special thread 30 cut on the outlet disk 19 with a large pitch. Furthermore, a milling 31 (FIGS. 3 and 7) on the circumference of the outlet disk 19 enables the weft thread 12 to be taken over by a gripper 32 (FIGS. 2 and 3). This gripper 32 is designed like a crank (FIG. 2); his crank member is swung out by a stepper motor 33 in the cycles of the weaving process. The stepper motor 33 is attached to a boom 34 of a longitudinally axially displaceable guide rod 35 on the frame G, which is moved back and forth in the direction of the weaving process in the weaving direction. The longitudinal displacement of the guide rod 35 takes place by means of a further stepping motor 36.

As a result of the combined rotation and displacement movement, the free end of the gripper 32 describes a spatial curve which it spends from the outlet disk 19 to the entrance of the respective seam weaving compartment 11.

A fabric guide 37 made of sheet metal is arranged on each half of the machine, by means of which both fabric ends of the fabric 7 are opened against one another in a funnel-shaped or conical manner and are thus prepared for the separation of the weft threads 10.

The arrangement of the disk separator 14, which is rotatably mounted in the frame G, and the fabric guide 37 (see FIG. 7) ensure that the knife edge 27 (FIG. 6) on the inlet disk 16 directly at the foot of the protruding from the fabric 7 and with a weft threads 10 provided on the outer edge by the additional weave 38 (FIG. 2, also FIG. 7) that has come about as described above engages. Due to the further transport of the weft threads 10 individually drawn in by the run-in disk 16 on the thread-like structure 16 to 18, the fabric guide 37 and the relative movement when the seam weaving machine M advances with respect to the clamped fabric 7, it is achieved that the foot of the weft yarns 10 is always further away from the disk separator 14 wanders away. This is necessary so that the additional binding 38, which has come about on the woven strip, on the outer edge of the weft threads 10 woven out as former warp threads with the aid of a thermal cutting device 39 (FIGS. 2, 3 and 7) that is firmly connected to the frame G (FIGS. 2, 3 and 7) 10 can be separated again in the event of any interlocking by combing through to the outer end of the weft threads 10. The thermal cutting device 39 is generally known in weaving technology and is therefore not described further here.

This procedure enables the weft threads 12 to be woven in to be clamped at their front ends by the respectively assigned gripper 32 (FIG. 2).

The grippers 32 are guided on the space curve described above in such a way that the respective front end of the respective weft thread 12 clamped by the assigned gripper 32 is brought past the disk separator 14 and the first weft thread guide 28 at the level of the respective sewing compartment 11.

Twisting of the guide rods 35 is prevented by means of parallel keys 40. At the rear end of each guide rod 35 a set of teeth 41 is attached. By means of a controlled reversing rotary movement of each stepping motor 36 and by transmitting this rotary movement via gear wheels 42 which engage in toothings 41 of the guide rods 35, these perform a defined movement in the axial direction of the disk separators 14. The rotary movements of the stepper motors 33 and 36 are coordinated.

The front end of the weft thread 12, brought with the aid of the gripper 32 at the level of the corresponding seam weaving compartment 11, is taken over by a plug arm 43 ′ arranged displaceably and non-rotatably on the frame G with a weft thread clamping device 44 ′ and pulled through the seam weaving compartment 11. The plug-in arm 43 'must be located within the cavity formed by the fabric 7 to be woven, because otherwise the insertion of the plug-in arm into the seam weaving compartment 11 would not be spatially possible. When the second weft thread 12 'is passed through from the opposite machine half M' through the corresponding seam weaving compartment 11 ', the plug-in arm 43 with the weft thread clamping device 44 takes over the weft thread 12' from the hook 32 'and pulls it through the seam weaving compartment 11'. With a corresponding design of the weft clamping devices 44, it is also possible to weft 1-2 with the plug arm 43 only up to the middle To push seam weaving compartment 11, where the weft thread is then taken over by the plug arm 43 'of the machine half M' and finally pulled through the seam weaving compartment 11. The weft thread 12 'is then passed through the corresponding seam weaving compartment 11' in the same way.

Each plug arm 43 is provided with a toothing 45; the required straight-line oscillating movement takes place via the toothing 45 in that, as already mentioned, the plug-in arms are mounted in the frame G such that they can rotate and are driven by stepper motors 46 which perform reversing movements.

The weft threads 12 each inserted into the corresponding seam weaving compartments 11 are pushed with the sley 6 onto the already finished seam 13.

The sley 6 is rotatably mounted in the frame G and is driven by a stepper motor 47, as shown in FIG. 8.

The woven strips 38 separated from the weft threads 10 by the thermal cutting devices 39 are wound onto the winding rollers 49 with the aid of the stepping motors 48. The weaving strips 38 still connected to the weft threads 10 are firmly connected to the clamping device 9 at the end of the clamping device 9 by means of clamping devices 50.

As already mentioned at the beginning, the frame G is displaceably mounted on guide rails 2 and is displaced from one end of the fabric band to be woven to the other end during the weaving process. This shift takes place step by step, namely in the cycle of the seam weaving process, in that the frame G is moved step by step by the stepping motor 3 via a tooth connection 51, 52.

• 3 für das Gestell G
• 25 für die Scheibenseparatoren 14
• 33 für die Greifer 32
• 36 für die Führungsstangen 35
• 46 für die Steckarme 43
• 47 für die Weblade 6
• 48 für die Aufwickelrollen 49

The stepper motors

• 3 for the frame G
• 25 for the disc separators 14
• 33 for the grippers 32
• 36 for the guide rods 35
• 46 for the plug arms 43
• 47 for the drawer 6
• 48 for the winding rollers 49

are connected to the jacquard machine 5 via a logic circuit (not shown) and carry out their method steps in the cycle of the jacquard machine, a series of intermediary sensors (not shown) controlling the entire workflow in a manner known otherwise.

The disk separator 14 described here takes up a number of weft threads 10 in the course of the separation in the manner of a memory. Since the disk separator 14 driven by the stepping motor 25 rotates step by step in the cycle of the weaving process, the separated weft threads 10 travel over the thread-like disks 16 to 18 from the inlet disk 16 to the outlet disk 19, where - as already described - the weft yarn 12 arriving there is picked up by the gripper 32.

Because of the complex production of such a separator 14 composed of many disks 17, 18 (1000 - 1200 disks on average), this separator can only be used economically for fabrics with equally strong fabric threads. However, if the thread thickness changes from tissue operation to tissue operation, a simpler disk separator 53 must be used for economic reasons. This consists of a ring 54, on the outer surface of which a metric thread 55 corresponding to the direction of rotation of the disk separator is cut is, as well as an inlet disk 16, a single thicker disk 18 and an outlet disk 19. Inlet disk, thicker disk and outlet disk are designed as described in the previous embodiment. The metric thread 55 on the ring 54 has the task of preventing the weft threads 10 from being taken along in the feed direction of the seam weaving machine during the advancement of the seam weaving machine and thus an insertion of the weft thread 10 through the run-in disk 16 onto the disk separator 53 would not always be guaranteed. The basic arrangement of the disk separator 53 in the seam weaving machine is shown in FIG. 9. The release of the weft thread 12 to be woven in from the binding of the woven strip 38 is achieved by correspondingly raising and lowering auxiliary warp threads 56 by means of auxiliary lifting elements 57 articulated on the jacquard cords, which are controlled by the jacquard machine 5. The released weft thread 12 is spatially separated from the weft threads 10 with the aid of the outlet disk 19.

Both disc separators 14, 53 require extremely precise guidance of the fabric to be woven in relation to the seam weaving machine, approximately in the order of magnitude of 0.1 mm both in the single step from thread to thread and in the sum of the process steps from the beginning of the fabric band and up to it The End. This means that the seam weaving machine must always be able to cancel the individual step errors against each other, a requirement that can only be satisfied by means of complex sensor technology.

In a simpler and more undemanding embodiment of the seam weaving machine, the spatial separation of the weft threads and their subsequent guidance is carried out up to the respectively formed, th compartment accomplished by an air flow coming from an air nozzle 58 (FIG. 10). The weft thread 10 integrated in the woven strip 38 is brought together with the woven strip from a woven strip guide 59 to the air nozzle 58, the woven strip 38 being brought out of its original vertical position into an approximately horizontal position.

The air nozzle 58 blows into a wind tunnel formed from three aerodynamically shaped guide plates 60, 61, 62 (FIGS. 11 and 12) as a result of the rotation of the woven strip 38 about its longitudinal axis and through the opening of the auxiliary warp threads 56 formed by means of the auxiliary lifting elements 57 Auxiliary compartment 63 creates a setting through which the pending weft thread 12 jumps out of the weaving order. The popped out weft thread 12 is picked up by the air flow and guided through the wind tunnel 60, 61, 62 until its front end reaches before the opening of the main compartment (seam weaving compartment) 11 which has just been formed in the same working cycle. Here it is gripped by the previously described plug-in arm 43 'with its weft thread clamping device 44' and pulls it through the seam weaving compartment 11. The further procedure takes place as in the first exemplary embodiment.

The air nozzle 58 is integrated in the woven strip guide 59 in order to save space. It is connected to an air supply line 65 via a solenoid valve 64. The solenoid valve 64 is controlled by sensors (not shown) which signal the point in time at which the plug arm 43 'begins its working stroke.

As already described at the beginning, the weaving strip 38 is outside the seam weaving machine on the clamping device 9 attached. During the operations of weaving the fabric ends together, the weaving strip 38 stands still while the frame G moves with the seam weaving machine.

The derogatory auxiliary warp threads 56 of the web strip 38 are wound onto the winding roller 49. Since the respective web strip 38 must be guided exactly from thread to thread relative to the seam weaving machine when disc separators 14, 53 are used, it is absolutely necessary that the take-up roll 49 is spanned exactly in time with the seam weaving process, which controls the driving stepping motor very precisely 48 requires.

This is not necessary when using air separation and air routing. It is sufficient here to load the take-up roll 49 with an approximately constant torque, e.g. with a rope 67 unwinding on the shaft of the take-up reel 49 and provided with a weight 66. With a fabric width of approx. 8 m, the weight 66, freed downwards, would also require a free depth of approx. 8 m. This is avoided by compensating for the relative movement of the woven strip seam weaving machine, in that the auxiliary warp threads 56, which are no longer used on the winding roller 49 and are no longer used, are held in tension by means of an unwinding roller 68 connected to the winding roller 49 in an axially and rotationally fixed manner, around which the rope 67 is rolled on which the drive weight 66 depends.

The rope 67 is deflected from the originally vertical position into a horizontal position (indicated by dashed lines in FIGS. 11 and 12) and brought up to a deflection roller 69, from which the drive weight 66 then hangs down. With this measure, the relative displacement of the seam weaving machine is used to substantially eliminate the movement of the weight 66.

In the same sense, a liquid flow can be used as a guide instead of an air flow, e.g. Water or a water emulsion. The effect is basically the same, although the air flow creates a back pressure while the water flow creates an impulse.

The weft threads can also be separated by means of electrical field forces by electrostatically charging the weft threads and the street over which the individual weft thread is to be guided with the same poles. To do this, two opposing capacitor plates are used (not shown).

The weft thread 12 is separated and guided up to the plug-in arm 43 'by means of air flow, liquid flow or electrostatics, regardless of the accuracy of the guide steps. The control of the seam weaving machine is significantly simplified.

The woven strip 38 does not need to come about solely by partially weaving out the textile web 4, but can subsequently take in auxiliary warp threads 56 that are woven into the fabric and are foreign to the fabric. This measure means that you are no longer bound to the specified number of stems for the type of tissue.

If the wave structure of the threads is designed in such a way that the air flow is not easily able to cause the weft thread 12 to be woven into it to jump out of the weave 38, an additional separator, namely a needle separator 70 in the form of one with at least one soft steel needle 71 used as a brush-provided brush, cf. Fig. 13. During the rotation of the needle separator 70, the steel needles 71 tear the weft thread 12, which is in each case to be woven, out of the weave; the weft 12 i is then brought into the open seam weaving compartment 11 in the manner described above.

As has been shown in experiments, with a simple straight-line introduction of the corresponding now weft 12, originally warp thread, into the corresponding seam weaving compartment 11 with the aid of plug-in arm 43 ′, the respective now weft thread 12, originally warp thread, can be added by pushing in with the sley 6 the woven seam 13 cannot always be brought into its position in the woven seam 13, which is predetermined by the weaving process.

So that the current weft thread 12, originally warp thread, which is introduced into the corresponding seam weaving compartment 11 in the cycle of the seam weaving process, is brought into its position in the weaving seam 13 predetermined by the weaving process at each work cycle, it is necessary to move the thread into the seam weaving compartment 11 with the aid of Plug-in 43 'inserted weft thread 12, originally warp thread, under a defined tension on the weaving seam 13 before pushing in with the drawer 6.

Due to the fact that the weft thread 12 is placed under tension on the weaving seam 13, a short piece of the weft thread 12 jumps into the position predetermined by the weaving process into the weaving seam 13 before it is inserted.

So that the weft thread 12, originally warp thread, can be attached to the weaving seam 13 under tension on the weaving seam 13 before being pushed in with the sley 6, the tubular is mig formed Steckarm 43 screwed 'in a with a longitudinal axial blind bore 72'und about a befind- _union longitudinal axial threaded through-bore 73' provided sliding element 74'in the longitudinal axial threaded bore 73'fest. The sliding element 74 ^/ is plugged with its blind hole 72 'onto a guide tube 75' which is inserted through a hole in the thicker leg of an L-shaped swivel arm 76 '(FIG. 18). Rotation of the sliding element 74 'is prevented by a bolt 78' screwed into the sliding element 74 'at right angles to its longitudinal-axial axis and guided in a longitudinal groove 77' located in the substantially flatter second arm of the swivel arm 76 '.

The right-angled swivel arm 76 '(FIG. 15) can be rotated on a base 81' which is screwed into a base plate 79 'which is firmly screwed to the toothing 45' on the plug-in arm 43 'and is secured against loosening by a nut 80' with its leg arranged in the seam weaving direction is stored and is clamped with the aid of a tension spring 82 'which is clamped between a pin 83' mounted in the arm of the swivel arm 76 'arranged at right angles to the seam weaving direction and a second pin 84' screwed into the base plate 79 'and against one in the base plate 79' screwed-in stop pin 85 'so that the much flatter leg of the swivel arm 76' is aligned exactly at right angles to the direction of the weave.

An internal thread 86 'is cut at the end of the guide tube 75' mounted in the swivel arm 76 '. In this internal thread 86 ', a compression spring 87' located in the guide tube 75 'can be pretensioned against the sliding element 74' which is displaceable on the guide tube 75 'by means of a threaded pin 89' secured against unintentional loosening.

The sliding element 74 'is supported on the steel wires 90; 91 ', which form the weft thread clamping device 44'. These steel wires are soldered into a clamping plate 92 'fixedly connected to the swivel arm 76' and are passed through the plug-in arm 43 'which is designed as a tube and through a plastic plug 93' screwed into its front end and provided with a longitudinal axial bore.

Each of the two steel wires 90; 91 ', which form the actual weft thread clamping device 44', is initially aligned in an arc shape and therefore has a bracing 43 'which stretches away from the original longitudinal direction or from the longitudinal direction of the plug arm 43' designed as a tube and containing the steel wires. Towards its free end, each steel wire is 90; 91 'twisted twice and here forms a "V" with legs of different lengths, the inner shorter leg of which continues in the shape of a curve. The arcuate orientation of one steel wire 90 'is opposite to the arc shape of the second steel wire 91', as shown in FIG. 19.

The opening and closing of the weft thread clamping device 44 'is achieved by a relative displacement of the plug arm 43' mounted in the sliding element 74 'with respect to the steel wires which are soldered into the clamping plate 92' which is firmly screwed to the swivel arm 76 'and which is passed through the plug arm 43' and the plastic plug 93 ' 90 ',; 91 'causes.

By moving the plug arm 43 'against the clamping plate 92', the V-shaped steel wires 90 ', 91' emerge further from the tubular plug arm 43 '. Under the action of the in the steel wires 90; 91 'prevailing, laterally outward-facing chip removal opening the mutually aligned V-shaped end pieces of the steel wires 90 ', 91' and form an open pair of pliers (Fig. 17) which encompasses the open end of the weft thread 12 in each case to be woven.

This relative displacement of the plug arm 43 ⁱ takes place in that the sliding element 74 'against an end (seen in the direction of movement of the rack for inserting the plug arm 43' into the seam weaving compartment 11) of a rack guide 94 'mounted in the frame G by means of thread 95' and with a Insulation material 96 'provided for noise insulation and adjustable stop 98' (FIG. ₁₄ ) secured against unintentional loosening by a nut 97 'shortly before reaching the maximum stroke of the rack 45' driven by the stepping motor 46 'and thus the sliding element 74' is displaced against the spring force of the compression spring 87 'relative to the guide tube 75' fixedly mounted in the swivel arm 76 '. Due to the relative displacement of the sliding element 74 'with respect to the guide tube 75', the push-in arm 43 ¹ which is firmly screwed into the sliding element 74 'shifts in relation to the steel wires 90' which are soldered into the clamping plate 92 'and are firmly connected to the swivel arm 76' by the clamping plate 92 '. , 91 ', with the result just described.

After reaching the maximum stroke, the rack 45 'moves back, and the plug-in arm 43' remains in the rest position until the kinks of the steel wires 90; 91 'on the plastic plug 93'. The compression spring 87 'is supported against the sliding element 74' and against the threaded pin 89 '; the displacement movement of the plug-in arm 43 'is limited by the kinking points of the steel wires 90', 91 'resting on the plastic plug 93'.

The picked up by the weft clamping device 44 ¹ weft 12, originally warp thread, caused by its firm clamping in the fabric 7 and by the partial weaving of the original weft threads 8, now warp threads, predetermined length that after the 43 ° carried out by means of the insertion arm Weft thread 12, originally warp thread, through the seam weaving compartment 11 when the weft thread 12 reaches the stretched position against the spring force of the right-angled swivel arm 76 'against the rear stop pin 85' holding spring 82 'a tensile force is created in the weft thread 12 and this with the further retraction of the Plug arm 43 'increasing tensile force of the weft thread 12, originally warp thread, causes the L-shaped swivel arm 76' to rotate counter to the seam weaving direction until it bears against a front stop pin 99 '. The pivoting movement of the L-shaped swivel arm 76 'triggered by the tensile force of the weft thread 12 in the stretched position creates a reaction force which brings the weft thread 12 into a position parallel to the woven seam 13. The rear reversal point of the lifting movement of the plug-in arm 43 'is designed such that, after reaching this parallel position, the weft thread 12 is pulled out of the weft thread clamping device 44'. The weft thread clamping device 44 ', as described above, picks up the now weft thread 12 at the end of the seam weaving compartment 11. Thereafter, the weft thread clamping device 44 'is caused to pull out of the seam weaving compartment 11 via the toothing 45', the weft thread 12 being pulled through with it.

In the previous description of the exemplary embodiment, the use of a sley 6, which is generally known in weaving technology, was assumed.

This sley 6 regulates firstly the insertion of the weft thread onto the fabric and secondly the maintenance of the defined distance of the individual warp threads from one another.

Since both the now weft threads 10, originally warp threads, as well as the now warp threads 8, originally weft threads, have a wave structure in the seam weaving process due to the preceding weaving process, the respectively associated weft threads 12 inserted into the corresponding seam weave compartments 11 jump through the push-in caused by the weaving drawer 6 of the weft thread 12 to the weaving seam 13 in its original position predetermined by the weaving process. A displacement of the weft thread 12, originally warp thread, introduced into the corresponding seam weaving compartment 11 and added by the weaving drawer 6, and also of the warp threads 8, originally weft thread, against one another is no longer possible without outside influence, even with the seam weaving compartment 11 still open, since this is caused by the weaving process predetermined wave structure of the warp threads 8, originally weft threads, and the weft threads 12, originally warp threads, are positively prevented.

Each individual type of fabric requires a special weaving drawer 6; however, the manufacture of a woven drawer is quite complex. In the present weaving process, the sley 6 has only one task of pushing the respective weft thread 12 onto the seam 13. Since it is not possible to move the now warp threads 8 and the now weft threads 12 against one another even with the seam weaving compartment 11 still open due to the thread structure, in a further embodiment of the invention pushing the weft thread 12 onto the weaving seam 13 can also be done using a needle roller rotatable in the frame G. 100 (Fig. 2'1), which can be used in the same shape for all types of tissue.

The needle roller 100, which is rotatably mounted in the frame, essentially consists of a shaft 101 on which two opposing rows of needles, consisting of a plurality of flexible needles 102, are arranged helically along their longitudinal axis.

The first of these helical, opposing rows of needles is right-handed and the second opposite row is left-handed.

This measure is necessary so that the weft thread 12, originally warp thread, introduced into the seam weaving compartment 11 is digitally pushed from the point at which the weft thread 12 emerges from the fabric 7 onto the woven seam 13, in individual steps in accordance with the arrangement of the elastic needles 102.

The needle roller 100 is driven by a stepping motor 103, and performs a 180 ⁰ limited in time with the weaving process and then intermittent rotary motion.

As a result of the rotational rotary movement of the needle roller 100 about its longitudinal axis, which rotation is limited to 180 and then stops, the individual needles 102 of the needle roller sweep past the weft thread 12, originally warp thread, which is added to the weaving seam 13 and leave scratch marks on the latter. Such scratch marks can possibly damage the fabric tape in the area of the woven seam 13. If such scratch marks have to be avoided, the weft threads 12 can be pushed into the seam weaving compartment 11 by means of Z-shaped needles 104, which are arranged next to one another in a guide bed 105, are individually axially displaceable and reach into the seam weaving compartment at their front Z end (FIG . 22).

The guide bed 105 is fixedly connected to the frame G and consists of a base plate 106 and two guide rods 107 fixedly mounted in this base plate 106, onto which rigid bend plates 109 and spacer sleeves 110, which are alternately provided with two bores 108, are pushed, whereby first a plate 109, then a spacer sleeve 110 follows on each guide rod 107, etc., lastly a sheet 109. Each spacer sleeve 110 has a length corresponding to the cross section of a Z-needle 104 and thus enables the longitudinal axial displacement of the associated Z-needle from the one spacer sleeve 110 to the next.

The height spacing of the guide rods 107 in the region of the base plate 106 spanning the woven seam 13 is dimensioned such that the Z needles 104 fit in between the base plate 106 and the outer surface of each of the spacer sleeves 110 pushed onto the guide rods 107 without play (FIGS. 22 and Fig 24).

This construction of the guide bed means that the Z needles 104 can be moved back and forth in the weaving direction in a manner that prevents rotation. The displacement of the Z needles 104 for the purpose of pushing in the weft thread 12, originally warp thread, introduced into the corresponding seam weaving shed 11 takes place against the seam weaving direction by means of a link 111 with an arc in the first third of the total length of the backdrop 111 perpendicular to the seam weaving direction, in the second third arcuately against the seam weaving direction and in the last third again groove 112 machined at right angles to the seam weaving direction, the total length of the backdrop 111 corresponding to three times the seam width and the individual Z needles 104 engage with their rear end in the groove 112. The backdrop 111 is slidably mounted on two special backdrop guide rods 113 at right angles to the seam weaving direction.

The slide guide rods 113 are mounted on one side of the base plate 106 in a sliding element 115 which is displaceable in the base plate 106 in the seam weaving direction and biased against the seam weaving direction by an adjustable compression spring 114 (coil spring or compressed air cylinder). The joint displacement of the two link guide rods 113 and thus also the link 111 mounted on them is therefore necessary so that the gradual advancement of the frame G does not have a tolerance-related effect on the insertion of the weft thread 12, originally warp thread, introduced into the seam weaving compartment 11 onto the weaving seam 13 can have (Fig. 26).

The link 111 is fixedly connected to a toothed belt drive 116 (or rope drive) and is shifted by this with the aid of a step motor 117 in the cycle of the seam weaving process from the corresponding side of the woven seam 13 to the other side and vice versa.

As a result of this displacement of the link 111 from one side of the woven seam 13 to the other and vice versa, the Z-needles 104 bent in a Z-shape and engaging with the rear end in the groove 112 of the link 111 in succession each perform an axial shift corresponding to the groove path up to the woven seam 13 and back to the starting position.

As a result of this displacement of the backdrop 111 and thus also of the individual Z-needles 104, which takes place in the cycle of the seam weaving process, the weft thread 12, originally warp thread, introduced into the seam weaving compartment 11 with the aid of the plug-in arm 43 ′ is removed from the exit point of the weft thread 12, originally warp thread. gradually pushed from the edge of the fabric 7 to the weaving seam 13, the weft thread 12, as already explained in the description of the needle roller 100, without having to take any additional measure, in the position specified by the weaving process, even when it is still open Seam weaving compartment 11 remains.

The backdrop 111 described above has the disadvantage that a relatively high friction occurs due to the deflection of the needle ends in the arcuate central part of the groove 112 between the Z-needles 104 and the backdrop 111. This friction leads to increased wear and also to an increase in the drive power for the link 111. In a structurally more favorable design of the link 111, the axial displacement of the Z-needles 104 is no longer caused by the arcuate curve piece of the groove 112 in the second third of the total length of the Setting 111 causes, but by a rotatable roller 118 used in place of the curve piece (Fig. 27).

By pushing in the weft thread 12, originally warp thread, introduced into the seam weaving compartment 11 with the aid of the plug-in arm 43 ′, with individual Z-needles 104 to be displaced axially in the seam weaving direction through the link 111, the drive power for the insertion of the weft thread 12, originally warp thread, with respect to the sley 6 conventionally used in weaving technology and also with respect to the needle roller 100.

Provided that the jacquard machine 5 has a sufficient number of cords 119, it is possible to achieve a three-stage lifting of the warp threads 8. For this purpose, the cords 119 of the jacquard machine 5 are connected to one another by connecting the first cord with the six hundredth cord, the second cord with the six hundredth cord, the third cord with the five hundred and ninety-ninth cord, and so on, for example with a number of cords of 601 cords . The interconnected cords 119 form loops which run around a summing roller 120. By means of this device, the time course of the seam weaving process is shortened by about half, without the working speed of the individual functions of the seam weaving machine having to be increased (FIG. 28).

A special cord 122 is attached to an axis of rotation 121 of the summing roller 120, in which a main lifting element 123 for the respective warp thread 8 is inserted. In the further course of the cord 122, it is guided around a rotatably mounted deflection roller 124 and fastened to a tension spring 125 suspended in the frame G.

The jacquard machine 5 is controlled in a known manner by punch cards. The jacquard perforated card in question is punched according to the rhythm of the weaving process and makes it possible to raise the main lifting element 123 in three stages and thus simultaneously to form two seam weaving compartments 11, 11 ', the seam weaving compartment 11 being formed above and the seam weaving compartment 11' below the weaving center (shown in Fig. 29). If the number of cords 119 of the jacquard machine 5 is not sufficient to proceed in this way, a second jacquard machine 126 can be attached in addition to the jacquard machine 5, which are rotatably connected to one another via a common shaft 127. The cords 119, 128 of the two jacquard machines 5, 126 are now cross-connected from machine to machine according to the principle described above, for example by connecting the first cord 119 of the first jacquard machine 5 to the corresponding first cord 128 of the second jacquard machine 126 etc. . The simultaneous formation of two seam weaving compartments 11, 11 'then takes place as described above, in that the punch cards of the two jacquard machines 5, 126 are matched accordingly.

Claims (17)

1.Method for creating a woven seam for connecting two open fabric ends, in particular for the purpose of producing an endless fabric tape, for example for the paper industry; by partially fraying the fabric ends and weaving the weft threads of one fabric end as warp threads into the other fabric end in such a way that the weft threads of one end of the fabric are introduced in their new properties as warp threads into the respective seam weaving compartments of the other end of the fabric and vice versa,
characterized in that after the fraying of each end of the fabric, a weave strip (38), which is partially separated from the total velvet fabric (7) and is only connected to it via the original warp threads (10), now weft threads, is formed by the now warp threads (8), originally weft threads , on the outer edge of the weft threads (10), originally warp threads, which are freely protruding from the fabric, are partially weighed out in such a way that the order of the now weft threads (10), originally warp threads, which is predetermined by the weaving process, is preserved and these now weft threads ( 10) are released in groups or individually by machine from the weave in the seam weaving process, in order then, spatially separated from one another via a separator (14, 53, 58, 70), one after the other, in compliance with the weaving order, individually by means of step-controlled gripping and guiding elements (32, 43 , 44, 58, 60, 61, 62) brought up to the respective open seam weaving compartment (11) and through this hind carried out to the web seam (13) and inserted by forming a new seam weaving compartment (11 ') in such a way that the weft thread pair formed from a right and a left weft thread (12, 12') along a certain distance in the woven seam (13) in a double layer The seam weaving machine and the two fabric ends of the total fabric (7) to be interwoven perform a relative movement in relation to one another, preferably controlled in time with the method steps, in that the individual steps of the relative movement correspond to the respective progress of the seam weaving process. 2. The method according to claim 1, characterized in that the relative movement is generated either stepwise or continuously. 3. The method according to claim 1, characterized in that instead of the sley (6) a special needle roller (100) pushes the weft (12, 12 ') in the seam weaving compartment (11, 11'). 4. The method according to claim 1, characterized in that the predetermined weaving order of the now weft threads (10), originally warp threads, is retained by connecting the threads to be woven in each case on their outer edges by means of gluing, soldering or welding. 5. The method according to claim 1, characterized in that the predetermined weaving order is ensured by weaving non-woven auxiliary warp threads (56) on the outer edges of the weft threads (10), originally warp threads, protruding from the fabric. 6. The method according to claims 1 and 5, characterized in that the picking up and guiding the thread to be woven in (12, 12 ') is carried out by means of a three-dimensionally guided air flow. 7. The method according to claim 1, characterized in that after each change of the subject a against the woven seam (13) aligned cutting device in the open seam compartment (11, 11 ') and the respective weft thread (12, 12') or the respective thread pair (12, 12 ') cuts off individually or together. 8. The method according to claim 1, characterized in that the lifting of the now warp threads (8), originally weft threads, takes place in three stages and, consequently, two compartments (11, 11 ') are formed, through which a weft thread (12, 12') ) is passed through, but in the opposite direction. 9. Device for performing the method according to claim 1 and optionally according to claims 2 to 8, characterized in that the device is composed of two opposite mirror-image and otherwise identical machine halves (M, M ') and on each of these halves a number of auxiliary lifting elements (57) for the mechanical release of the now weft threads (10, 10 '), originally warp threads, and fastened to cords of a jacquard machine (5) common to both machine halves, the released weft threads (12) each using a separator controlled in time with the weaving process (14, 53, 58, 70) separately from the remaining weft threads separated (10, 10 ') which each one also operating in time with the weaving gripper element (32) engages the free end of each emergent weft yarn (12) and to the in ₉ Cycles of the weaving process each bring newly formed seam weaving compartment (11, 11 ') where the weft thread end (12, 12') is picked up by a plug arm (43 ', 43) provided with a weft thread clamping device (44: 44) and through the seam weaving compartment (11 , 11 ') is spent. 10. Device according to claims 1 and 9, characterized in that the device is attached to a two machine halves (M, M ') supporting frame (G) which is slidably mounted on a clamping device (9) on which the fabric to be woven (7) is spanned in its entire width. 11. The device according to claims 1 and 9, characterized in that each separator (14, 53) thread-like composed of a series of alternately thinner and thicker discs (17, 18) plugged onto a common separator shaft (15) by the thicker discs (18) have a thickness which corresponds to the thickness of the threads (10) to be woven, and the difference in diameter between the thicker (18) and the thinner discs (17) is sufficient to provide the structure of the threads (10 ), the first disc seen against the weaving direction serving as an inlet disc (16) and the last disc seen in the same direction as an outlet disc (19) and both the thinner discs (17) and the thicker discs (18) cut laterally and thread-like are pre-bent. ₁ 2. Device according to claims 1 and 9, characterized in that each separator (53) has only a single thicker disk (18), which between a ring provided with a metric thread on its surface (55), the inlet disk (16 ) and the outlet disc (19) is clamped. 13. Device according to claims 1 and 9, characterized in that each separator is composed of a wind tunnel consisting of aerodynamically shaped baffles (60, 61, 62) and an air nozzle (58) projecting into the latter, the air flow generated by the air nozzle, deflected three-dimensionally in the wind tunnel (60, 61, 62), acts as a gripper and guide of the weft thread (12) to be woven in. 14. Device according to claims 1 and 9, characterized in that at the exit point of the weft thread (38) released from the weave of the web strip (38) a from a rotating in the cycle of the weaving shaft with at least one perpendicular to this shaft attached separator needle ( 71) existing needle separator (70) is arranged. 15. Device according to claims 1 and 9, characterized by a tubular plug-in arm (43 ') which is controlled in the course of and in the cycle of the seam weaving process, can be swung out on a two-leg swivel arm (76') and can be moved back and forth by the seam weave compartment (11) formed in each case, in the tube interior at least one steel wire (90 ', 91') which is bent at its free end and fastened to the swivel arm (76 ') is arranged to be displaceable relative to the plug-in arm (43') and between the The kink and the open tube end of the plug-in arm (43 ') clamps the weft thread (12) which is to be woven in and releases the weft thread (12) after pulling out of the seam-weaving compartment (11) and swiveling the plug-in arm (43') . 16. Device according to claims 1 and 9, characterized in that the feeding of the individual weft thread (12) in the seam weaving compartment (11) by a rotatably mounted in the frame (G), stepwise driven needle roller (100) takes place, on the rotary shaft (101) two opposing rows of needles consisting of a plurality of flexible elastic needles (102) are arranged helically in such a way that the helical line of one row of needles runs to the right and that of the second row of needles runs to the left. 17. The device according to claims 1 and 9, characterized in that the addition of the individual weft thread (12) in the seam weaving compartment (11) by means of approximately right-angled, e.g. Z-shaped needles (104) take place, which are arranged parallel to each other and are longitudinally displaceable on a guide bed (105), with one end protruding into a cam groove (112) of a backdrop (111) that can be moved back and forth in the cycle of the weaving process the bent free needle part reach into the seam weaving compartment (11) and there carries out an insertion movement corresponding to the curve shape of the curve groove (112).

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