EP0350574B1 - Seaming machine for producing a seam for making a textile web endless. - Google Patents

Seaming machine for producing a seam for making a textile web endless. Download PDF

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Publication number
EP0350574B1
EP0350574B1 EP89106420A EP89106420A EP0350574B1 EP 0350574 B1 EP0350574 B1 EP 0350574B1 EP 89106420 A EP89106420 A EP 89106420A EP 89106420 A EP89106420 A EP 89106420A EP 0350574 B1 EP0350574 B1 EP 0350574B1
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EP
European Patent Office
Prior art keywords
grippers
wire
thread
seaming machine
seam
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP89106420A
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German (de)
French (fr)
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EP0350574A1 (en
Inventor
Bernhard Krenkel
Heinz Joos
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Cessione wis Engineering GmbH
Original Assignee
F Oberdorfer Siebtechnik GmbH
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Publication date
Application filed by F Oberdorfer Siebtechnik GmbH filed Critical F Oberdorfer Siebtechnik GmbH
Priority to AT89106420T priority Critical patent/ATE93288T1/en
Publication of EP0350574A1 publication Critical patent/EP0350574A1/en
Application granted granted Critical
Publication of EP0350574B1 publication Critical patent/EP0350574B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • DTEXTILES; PAPER
    • D21PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21FPAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
    • D21F1/00Wet end of machines for making continuous webs of paper
    • D21F1/0027Screen-cloths
    • D21F1/0054Seams thereof

Definitions

  • the invention relates to a seaming machine for producing a plug-in seam for making a fabric band, in particular a sieve, according to the preamble of claim 1.
  • the above-mentioned fabric belts include, in particular, drainage or dryer fabrics.
  • sieves with a plug seam have the advantage that they can be made endless in the dewatering machine or in the dry part of the paper machine even by joining the two prepared fabric ends with a plug wire.
  • these plug-in seams have been produced by hand by weaving or splicing back the warp wires on each fabric side of two fabric ends to be sewn, so that a row of warp wire loops is created on each side, through which the common connecting connecting wire can then be guided.
  • the invention has for its object to provide a seam machine of the type specified, the control is improved.
  • the seaming machine essentially consists of a chassis 1, a frame 3, 4, 4 ', a jacquard head 40, a harness 50, a single thread suspension 60, a thread separator 7, 7', a transfer gripper 8, 8 ', a pull-through gripper 9, 9', a sley 10, 10 ', a control panel 70, an electrical control cabinet 80 and a pneumatic control cabinet 90.
  • the seaming machine is mounted on the chassis 1, which consists of a frame body 31 which is movable on wheels 30 and which can be moved in the rhythm of the weaving progress by means of a controlled drive motor 2.
  • the chassis is a welded construction and serves as a frame for the machine table 32, and the brackets 6, 41, 51, 61 of the above-mentioned assemblies and as a feed unit 35 during the weaving process.
  • the chassis can be driven automatically via a gear motor 2, 37 and subsequent large reduction. A feed rate of, for example, 0.4 mm / s can be achieved.
  • the feed of the seaming machine is controlled depending on the fabric density, whereby the duration of the driving impulse must be entered into the program via a timing element depending on the warp thread division.
  • the machine can be driven forwards or backwards using buttons switched by the geared brake motor, whereby forward means in the direction of the seam.
  • This operating mode is intended for driving short distances, e.g. for picking up or in the event of a fault. If the seaming machine is to be driven over longer distances, as is the case, for example, after the seam has been finished and the sieve has been removed, if the machine has to be moved into the weaving position again, then the motor is shut down by a mechanism 36 which, inter alia, consists of a star grip screw 38 Intervention. The sewing machine can then be moved by hand. The disengagement of the geared motor 2, 37 takes place in such a way that the star grip screw 38 (FIG.
  • the frame generally consists of two stands 4, 4 'and two support and guide tubes 3, as well as one or two intermediate stands 4a for wide and heavy screens to support the support body 3.
  • the frame body 31 is below the working level of the machine on both Pages guided by the two parallel support or guide tubes 3, which in turn are each attached at their ends to a horizontal cross member 32 of the stand 4.
  • the stand 4 has no wheels and is on the weaving side of the sewing machine.
  • This stand has the function of guiding and clamping the support tubes 3, as well as the clamping of the auxiliary warp threads or strips 15, 15 'and the central wire 16, and also serves to hold the deflection rollers 13a for loading the magazine collar 13, 13', to arrange the Connection socket for the power supply and for fastening a compressed air spiral hose.
  • the stand 4 ' has four swivel castors 4b and 4c, the swivel castors 4b being provided with brakes which can be ascertained during operation of the sewing machine.
  • This stand has the function of guiding and clamping the support tubes 3 and clamping the magazine collar 13, 13 '.
  • the jacquard head 40 known from the prior art is arranged centrally in the chassis 1.
  • the jacquard head 40 is designed, for example, for 216 threads, 198 threads being used when the first two and the last row of cards on the jacquard head are left free.
  • the first two rows of jacquard cards 44 are required to control a double needle 7a of the thread separator 7, 7 ', the last row is omitted in order to improve the geometry of the compartment.
  • a pneumatic cylinder 45 is attached to the brackets 51 as a changing device 46 for the central wire 16.
  • the central wires 16 are controlled by signals contained in the weaving program.
  • the jacquard head can be operated manually by appropriate switches and buttons. A manual change of subject is possible with these switches.
  • the harness 50 is equipped with 198 threads in the example given above, i.e. a seam with a maximum of 198 threads can be made. In the case of seams with a smaller number of auxiliary warp threads 15, 15 ', these are to be divided in the middle in the harness 50. Depending on the number of auxiliary warp threads, every third or fourth harness eyelet 52 must be left free.
  • the bias of the harness springs 53 can be changed by raising or lowering the spring base 54.
  • each auxiliary warp thread 15, 15 ' is provided with a weight 62.
  • the auxiliary warp thread 15, 15 ' is connected to the connecting thread 63 of the weight via a special coupling 64 after threading into the harness eyelet 52.
  • the weights 62 consist of brass. With a diameter of 4 mm, a weight is 62 600 mm long and weighs approx. 65 g.
  • the thread separators 7, 7 ' like the above-mentioned shedding device 5 or the jacquard head 40, are connected to the chassis 1 via a bracket 6. With the thread separator 7, 7 ', the warp thread ends 12, 12' to be woven in are individually released from the magazine band 13, 13 'and positioned via the transfer gripper 8, 8'.
  • the force of the disconnector head 7b is determined by a spring 7c, which is coupled to a pneumatic cylinder 7d.
  • the thread separators 7, 7 ' can be adjusted horizontally and vertically by means of knurled screws 7e.
  • the whole mechanism 7 to 7e and 8 to 8g can be folded up, which creates free access to the seam area.
  • the size of the separator needles 7a with two hooks 7g, 7g 'for Thread separation in fine, multi-layer fabrics is based on the warp thread profile. In the case of round warp threads, the depth of the hook 7a 'should always be 25 to 30% below the warp thread diameter. Oval and rectangular warp threads require specially adapted separating needles 7a.
  • the thread separator can be operated both automatically and manually. The same applies to the thread tensioner 7f or the movement of the separation needles.
  • Thread separators 7, 7 'and transfer grippers 8, 8' are attached to the console 6.
  • a transfer gripper 8 or 8' is provided for one of the two fabric sides, the reference numerals provided with the line index belonging to one side of the fabric and the reference numbers not having a line belonging to the opposite other side of the fabric.
  • the transfer grippers 8, 8 ' take the separated thread 12a from the thread separator 7, 7' and transfer it to the pull-through gripper 9, 9 'ready.
  • the transfer grippers 8, 8 ' are driven by pneumatic rotary drives 8a (FIG. 15). The pivoting angle of the transfer grippers 8, 8 'can be adjusted continuously using stop screws 8b.
  • Electronic acknowledgment elements 8c are mounted on the stop screws 8b to acknowledge the end positions.
  • the setscrews on the acknowledgment elements 8c and the lock nuts 8e on the stop screws 8b are loosened, whereupon the angle of rotation and thus the position of the grippers can be adjusted with the stop screws.
  • the transfer gripper clamps 8f are equipped with electrical contacts 8g. In the absence of a thread 12a, the control switches to malfunction, so that the machine is deactivated. To insert the missing thread in the transfer hook tensioner 8f (FIG. 17a), the tensioner is opened by a switch until the thread has been inserted by hand.
  • the pull-through grippers 9, 9 '(FIG. 18) and the two weaving frames 10, 10' (FIG. 19) are mounted below the working plane of the sewing machine.
  • the pull-through grippers 9, 9 ' have essentially two functions, namely the removal of the warp thread ends 12, 12' from the transfer hooks 8, 8 'and the insertion of these auxiliary weft threads into the alternately opened compartments 5a, 5b, 5c of the seam, and also for mutual transfer or Acceptance of the warp thread ends 12, 12 'which are lifted back.
  • the end positions 9e of the pull-through grippers 9, 9 ' are infinitely adjustable by means of stop screws 9f.
  • the acknowledgment elements for the end position acknowledgment 9b are attached to the stop screws 9f and must be removed before the stop screws 9f are adjusted.
  • the pull-through grippers 9, 9 ′ have cams 9h attached to the lower shaft ends 9g.
  • proximity cams 9i are switched by these cams 9h.
  • the seaming machine is switched off with the main switch. Then the compressed air connections 9j on the cylinder base 9k and the lock nuts 9l on the cylinder neck 9m are loosened.
  • the desired position 9d is set by rotating the cylinder 9c. Then the air connections 9j and the lock nuts 9l are tightened again and then the cams 9h are readjusted for the intermediate position acknowledgment.
  • the gripper heads 9n (Fig. 18a) are equipped with electrical contacts 9p, which give a signal to the machine control in the event of a missing thread, whereby the machine switches to malfunction.
  • Two weaving frames 10, 10 ' are mounted in the seaming machine, one on the operating side and the other on the rear side.
  • the weaving shutters 10, 10 ' are driven by pneumatic cylinders 10a. These are equipped with throttle valves 10b, with which the shutter speed can be regulated.
  • the reed 10c is composed individually for each fabric from corresponding rites 10d and spacers 10e. It may be necessary for more than one auxiliary warp thread 15, 15 'to be drawn in per passage 10f.
  • the switching and monitoring devices necessary for operating the sewing machine are also attached to the console 6 and are arranged in the control panel.
  • the switching elements and display devices arranged in the control panel 70 serve to actuate and monitor the travel drive, the shedding device 5, the thread separator and thread separator tensioner, the pull-through gripper and pull-through hook tensioner.
  • the selector switch for automatic and single cycle and the "emergency stop" button are also installed there.
  • the main switch, the circuit breakers, the contactors and the programmable logic controller are arranged in the electrical control cabinet 80.
  • the pneumatic control cabinet 90 contains the valves for all gripping elements, weaving frames, plug-in wire and shedding device (reverse running).
  • Fig. 1 the screen fabric 11 to be provided with a pin seam is carried out under the seaming machine, ie the machine rolls on the screen covered with a protective layer. Another way of leadership of the screen fabric 11 is shown in FIG. 2.
  • the screen fabric is then passed over the seaming machine like a tent via two support rods 23, 24.
  • the two ends 21, 22 of the screen fabric 11 to be provided with a pin seam are prepared before insertion into the sewing machine as far as the weft threads are removed in an area of approximately 10 to 20 cm width and then 10 to 30 weft threads on the depending on the weave Warp thread ends 12, 12 'are combined in their exact weaving position to form a magazine band 13, 13'.
  • a wire bundle which can consist of original weft threads of the fabric or a strip 15, 15 'consisting of original weft threads of the fabric, also called auxiliary warp strip, which represents the chain for the seam weaving process which runs transversely to the actual sieving direction.
  • the central wire 16 is located exactly in the middle between the two auxiliary chain strips 15, 15 '.
  • the auxiliary warp strips and the central wire are fastened in a further tensioning device 17 of the machine, which is also carried by the stands 4, 4 '.
  • the individual wires of the auxiliary chain and the central wire are guided in eyelets of the shedding device 40, which is located above or below the weaving plane on the chassis.
  • the separation and separation of the warp thread ends 12, 12 '(Fig. 1) with the help of the thread separators 7, 7' takes place in a manner known per se, with seam-forming elements of the same type on both sides of the seam, such as thread separators 7, 7 ', transfer grippers 8, 8', pull-through grippers 9, 9 'and weaving frames 10, 10'.
  • the transfer rapier 8 takes over the warp thread end separated by the thread separator 7' and swings it down into the transfer position of the working plane, as can be seen in FIG. 3.
  • the pull-through gripper 9 takes over the warp thread end and pulls the warp thread into the full compartment formed by the shedding device 5.
  • the warp thread end thus entered is then struck against the selvedge by the sley 10 '.
  • a partial compartment is now formed from the right part of the auxiliary warp strip 15 ', as can be seen in FIG. 4, and the same warp thread end is pivoted back by the pull-through gripper 9 into said transfer position, where the pull-through gripper 9' takes it over.
  • the connector compartment is formed in the auxiliary warp thread half 15 ', the next warp thread is brought from the transfer gripper 8' into the transfer position and is inserted by the pulling gripper 9 into the now outer partial compartment, as can be seen from FIG. 5, after which the warp thread is again struck with the sley 10 ' becomes.
  • the central wire 16 Since the central wire 16 is not involved in the change of subject during these operations, it is not wrapped around by the warp wire ends. This is shown in Fig. 6 by the threads or wires a and b. Thereafter, the operations described above are repeated in the same order with the following wires or threads b and d, but this time the central wire 16 is included in the change of subject and is thus integrated into the warp wire loop. Thus, only every second warp thread on each fabric side binds a load-bearing warp wire loop 33, 33 'which can transmit tensile forces.
  • the two fabric sides 15, 15 ' are arranged so that they are offset from one another such that a long loop 28 of the left screen fabric edge around both plug wires and a short loop 29' of the right screen fabric edge around the right plug wire 27 ', then a short loop 29 of the left screen fabric edge around the left-hand plug wire and a long loop 28 'of the right-hand screen fabric edge around both plug-in wires 27, 27'.
  • a process variant can be used in such a way that the warp thread ends are individually woven into a loop 34 of a wire spiral 25 after the fraying of the right and left side of the fabric and their alignment in the magazine band each warp thread ends in the spiral, as shown in Fig. 8.
  • the fabric sides provided with the spiral 25 to be woven into them 15, 15 'in a device 18 shown in FIG. 9, which is mounted in the chassis 1 of the sewing machine.
  • This device is required in particular when using two parallel wire spirals 25, 25 ', one of which is assigned to a screen fabric side. These two wire spirals are not connected to each other.
  • the left and right tissue ends are held by the device 18 by means of guide rollers 19, 20 in such a way that lateral slipping or shifting is prevented.
  • the wire spirals are connected with a common plug wire outside of the sewing machine.
  • the seaming machine described above is designed in such a way that it can also weave a wire spiral 25 of the type shown in FIG. 8 into only one side of the fabric.
  • a wire spiral 25 of the type shown in FIG. 8 into only one side of the fabric.
  • the wire spirals which are later connected to a common plug wire when the sieve is made endless, together with a wire 26 (FIG. 10) lying in the spirals into the fabric sides.
  • FIG. 11 An alternative solution to FIG. 9, in which the guide rollers 19, 20 shown there are replaced by a strong, displaceable central wire, is shown in FIG. 11.
  • the function of the guide rollers 19, 20 is taken over by the central wire 21 by connecting the two fabric sides 15, 15 'and fixing them in position on the machine.
  • the central wire is sharpened at its front end; the feed is carried out according to the progress of the seam.
  • the sewing machine is suitable for technical fabrics such as To equip dryer fabrics for dewatering, paper and cardboard machines with a wide variety of compositions in the warp and weft directions (mono or multifilament in polyester or polyamide) and single or multi-layer construction with push-in seams.
  • Basic fabrics for wet felts in single or multi-layer designs can also be provided with pin seams.
  • the auxiliary warp threads in the seam region that is to say the weft threads in the original fabric, are made of a different material than the other weft threads in the fabric.

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  • Woven Fabrics (AREA)
  • Sewing Machines And Sewing (AREA)
  • Treatment Of Fiber Materials (AREA)
  • Decoration Of Textiles (AREA)
  • Display Devices Of Pinball Game Machines (AREA)

Abstract

The invention relates to a process and to a machine for producing a seam for making a textile web endless, which not only mechanises and automates time-consuming manual work but also accomplishes the latter in a manner which ensures troublefree automatic manufacture. According to the invention, this is achieved when the warp thread ends are strung up by machine in a magazining collar (13, 13') after removal of the fringes of the right-and left-hand fabric sides, are separated off individually according to the weaving order and alternately taken back around a central wire (16) of any desired cross-sectional area arranged in the centre of the auxiliary warp strip (15, 15') and consisting of at least one wire, and woven so that the central wire (16) is looped, corresponding to the progress of work, alternately by a warp thread end from the right-hand and left-hand fabric sides, while the respective opposite warp thread is woven back without looping the central wire, the warp thread ends being beaten up parallel to the weaving edge after introduction into the open shed corresponding to the weaving order. In place of a central wire, two parallel, not mutually joined wire coils can also be used which hold the right-hand and left-hand fabric ends in such a way that lateral sliding or shifting is prevented. <IMAGE>

Description

Die Erfindung bezieht sich auf eine Nahtungsmaschine zur Herstellung einer Stecknaht zum Endlosmachen eines Gewebebandes, insbesondere eines Siebes, nach dem Oberbegriff des Anspruchs 1.The invention relates to a seaming machine for producing a plug-in seam for making a fabric band, in particular a sieve, according to the preamble of claim 1.

Zu den oben erwähnten Gewebebändern gehören insbesondere Entwässerungs- oder Trockensiebe. Gegenüber endlos gewobenen oder durch eine Webnaht endlos gemachten Sieben haben Siebe mit Stecknaht den Vorteil, daß sie in der Entwässerungsmaschine oder im Trockenteil der Papiermaschine selbst durch Zusammenfügen der beiden vorbereiteten Gewebeenden mit einem Steckdraht endlos gemacht werden können. Die Herstellung dieser Stecknähte ist bisher von Hand erfolgt, indem die Kettdrähte einer jeden Gewebeseite zweier zu vernahtender Gewebeenden zurückgewoben oder zurückgespleißt werden, so daß auf jeder Seite eine Reihe von Kettdrahtschlaufen entsteht, durch die dann der gemeinsame, verbindende Steckdraht geführt werden kann.The above-mentioned fabric belts include, in particular, drainage or dryer fabrics. Compared to endlessly woven or made endless by a woven seam, sieves with a plug seam have the advantage that they can be made endless in the dewatering machine or in the dry part of the paper machine even by joining the two prepared fabric ends with a plug wire. Up to now, these plug-in seams have been produced by hand by weaving or splicing back the warp wires on each fabric side of two fabric ends to be sewn, so that a row of warp wire loops is created on each side, through which the common connecting connecting wire can then be guided.

Diese Art der Herstellung der Stecknaht, die in der EP-0043441 und dem DE-GM 81 22 451 in bezug auf das Endlosmachen von Entwässerungssieben mit einer Webnaht beschrieben und dargestellt ist, ist sehr aufwendig, weil sie von Hand erfolgt.This type of production of the pin seam, which is described and illustrated in EP-0043441 and DE-GM 81 22 451 in relation to the continuous making of drainage screens with a woven seam, is very complex because it is done by hand.

Aus der EP-0185907 ist allgemein eine Nahtungsmaschine der eingangs erwähnten Art mit Magazinierbunden, Fadentrennern, Übergabegreifern, Durchziehgreifern und Webladen bekannt, ohne daß darin angegeben ist, wie die einzelnen vorgenannten Nahtbildungselemente justiert und eingestellt werden können.From EP-0185907 a seaming machine of the type mentioned at the outset with magazine bundles, thread separators, transfer grippers, pull-through grippers and weaving frames is generally known without specifying how the individual aforementioned seaming elements are adjusted and can be adjusted.

Der Erfindung liegt die Aufgabe zugrunde, eine Nahtungsmaschine der eingangs angegebenen Art zu schaffen, deren Steuerung verbessert ist.The invention has for its object to provide a seam machine of the type specified, the control is improved.

Diese Aufgabe wird erfindungsgemäß bei einer Nahtungsmaschine der eingangs erwähnten Art dadurch gelöst, daß die Fadentrenner mittels Rändelschrauben horizontal und vertikal verstellbar und mittels pneumatischer Drehantriebe antreibbar sind, daß die Schwenkwinkel der Übergabegreifer über Anschlagschrauben stufenlos verstellbar und zur Quittierung der Endlagen an den Anschlagschrauben elektronische Quittierelemente montiert sind, und daß die Durchziehgreifer durch pneumatische Drehantriebe mit Endlagenquittierung antreibbar sind, wobei die Endlagen der Durchziehgreifer mittels Anschlagschrauben stufenlos verstellbar sind.This object is achieved according to the invention in a seaming machine of the type mentioned at the outset in that the thread separators can be adjusted horizontally and vertically by means of knurled screws and driven by pneumatic rotary drives, that the pivoting angle of the transfer grippers is infinitely adjustable by means of stop screws and electronic acknowledgment elements are mounted on the stop screws to acknowledge the end positions and that the pull-through grippers can be driven by pneumatic rotary drives with end position acknowledgment, the end positions of the pull-through grippers being infinitely adjustable by means of stop screws.

Vorteilhafte Weiterbildungen der Nahtungsmaschine sind Gegenstand der Unteransprüche.Advantageous further developments of the sewing machine are the subject of the dependent claims.

Die Erfindung wird nachfolgend anhand der in der Zeichnung dargestellten Ausführungsbeispiele naher erläutert. In der Zeichnung zeigen:

Fig. 1
eine schematische, perspektivische Darstellung der erfindungsgemäßen Nahtungsmaschine von vorn,
Fig. 2
eine Stirnansicht der Maschine von Fig. 1 in einem kleineren Maßstab, wobei die endlos zu machende Gewebebahn zeltartig über die Nahtungsmaschine hinweggeführt ist,
Fig. 2a
eine Detailansicht des Mechanismus zum In- und Außer-Eingriff-Bringen des Getriebemotors der Nahtungsmaschine,
Fig. 3-5
schematische Darstellungen der Arbeitsschritte bei der Herstellung der Stecknaht für eine Gewebeseite,
Fig. 6
eine schematische Draufsicht auf die Naht der mittels eines Zentraldrahtes miteinander zu verbindenden rechten und linken Gewebeseite,
Fig. 7
eine der Fig. 6 entsprechende Draufsicht, bei der jedoch anstelle eines Zentraldrahtes zwei parallele Steckdrähte Verwendung finden,
Fig. 8
eine Draufsicht auf ein Gewebeende, in das eine Drahtspirale eingewoben ist, wobei jedes Kettfadenende in die Spirale einbindet,
Fig. 9
eine Querschnittsansicht zweier mit je einer Drahtspirale versehener Gewebeenden, die durch eine mit Führungsrollen versehene Vorrichtung positioniert werden,
Fig. 10
eine der Fig. 8 ähnliche Draufsicht auf ein Gewebeende, bei der die Drahtspirale zusammen mit einem in ihr liegenden Draht eingewoben ist,
Fig.11
Spiralen mit nachgeschobenem Zentraldraht,
Fig. 12
eine schematische Ansicht, teilweise im Schnitt, in Längsrichtung der in Fig. 2 gezeigten Nahtungsmaschine längs der Symmetrielinie,
Fig. 13
eine schematische Ansicht eines Querschnitts der in Fig. 1 gezeigten Nahtungsmaschine,
Fig. 14
eine Gesamtansicht der Nahtungsmaschine mit Gestell und Einzelfädenaufhängung,
Fig. 15
eine perspektivische Ansicht der Anordnung von Fadentrennern und Übergabegreifern und Niederhalter,
Fig. 16
eine schematische Darstellung der wesentlichen Teile der Baugruppe Fadentrenner,
Fig. 17
eine schematische Darstellung der Anordnung der Baugruppe Übergabegreifer,
Fig. 17a
einen Schnitt durch den Kopf des Übergabegreifers,
Fig. 18
eine Darstellung der Baugruppe Durchziehgreifer,
Fig. 18a
einen Schnitt durch den Kopf des Übergabegreifers
Fig. 19
eine schematische Darstellung der beiden Webladen.
Fig. 19a
eine Seitenansicht der Weblade gemäß Pfeil A in Fig. 19.
The invention is explained in more detail below with reference to the exemplary embodiments shown in the drawing. The drawing shows:
Fig. 1
2 shows a schematic, perspective view of the seam machine according to the invention from the front,
Fig. 2
2 shows a front view of the machine from FIG. 1 on a smaller scale, the fabric web to be made endless being guided over the seaming machine like a tent,
Fig. 2a
2 shows a detailed view of the mechanism for engaging and disengaging the gear motor of the seaming machine,
Fig. 3-5
schematic representations of the working steps in the production of the pin seam for a fabric side,
Fig. 6
2 shows a schematic plan view of the seam of the right and left side of the tissue to be connected to one another by means of a central wire,
Fig. 7
6 shows a plan view corresponding to FIG. 6, but in which two parallel plug wires are used instead of a central wire,
Fig. 8
2 shows a plan view of a fabric end into which a wire spiral is woven, each end of the warp thread being incorporated into the spiral,
Fig. 9
2 shows a cross-sectional view of two fabric ends, each with a wire spiral, which are positioned by a device provided with guide rollers,
Fig. 10
8 a plan view similar to FIG. 8 of a fabric end, in which the wire spiral is woven together with a wire lying in it,
Fig. 11
Spirals with inserted central wire,
Fig. 12
2 shows a schematic view, partly in section, in the longitudinal direction of the seaming machine shown in FIG. 2 along the line of symmetry,
Fig. 13
2 shows a schematic view of a cross section of the seaming machine shown in FIG. 1,
Fig. 14
an overall view of the seaming machine with frame and single thread suspension,
Fig. 15
1 shows a perspective view of the arrangement of thread separators and transfer grippers and hold-down devices,
Fig. 16
a schematic representation of the essential parts of the thread separator assembly,
Fig. 17
1 shows a schematic representation of the arrangement of the transfer gripper assembly,
Fig. 17a
a section through the head of the transfer gripper,
Fig. 18
a representation of the pulling gripper assembly,
Fig. 18a
a section through the head of the transfer gripper
Fig. 19
a schematic representation of the two web stores.
Fig. 19a
a side view of the sley according to arrow A in FIG. 19.

Wie aus den Fig. 1, 12 bis 14 ersichtlich, besteht die Nahtungsmaschine im wesentlichen aus einem Fahrgestell 1, einem Gestell 3, 4, 4', einem Jacquardkopf 40, einem Harnisch 50, einer Einzelfadenaufhängung 60, einem Fadentrenner 7, 7', einem Übergabegreifer 8, 8', einem Durchziehgreifer 9, 9', einer Weblade 10, 10', einem Schaltpult 70, einem Elektrik-Schaltschrank 80 und einem Pneumatik-Schaltschrank 90.1, 12 to 14, the seaming machine essentially consists of a chassis 1, a frame 3, 4, 4 ', a jacquard head 40, a harness 50, a single thread suspension 60, a thread separator 7, 7', a transfer gripper 8, 8 ', a pull-through gripper 9, 9', a sley 10, 10 ', a control panel 70, an electrical control cabinet 80 and a pneumatic control cabinet 90.

Wie aus den Fig. 1, 12 und 13 ersichtlich, ist die Nahtungsmaschine auf dem Fahrgestell 1 montiert, das aus einem auf Rädern 30 beweglichen Rahmenkörper 31 besteht, der sich im Rhythmus des Webfortschrittes über einen gesteuerten Antriebsmotor 2 fortbewegen läßt. Das Fahrgestell ist eine Schweißkonstruktion und dient als Gerüst für den Maschinentisch 32, und die Konsolen 6, 41, 51, 61 der oben genannten Baugruppen sowie als Vorschubeinheit 35 beim Webvorgang. Das Fahrgestell kann über einen Getriebemotor 2, 37 und nachfolgender großer Untersetzung automatisch gefahren werden. Dabei kann ein Vorschub von beispielsweise 0,4 mm/s erzielt werden. Der Vorschub der Nahtungsmaschine wird abhängig von der Gewebedichte gesteuert, wobei die Dauer des Fahrimpulses je nach Kettfadenteilung über ein Zeitglied ins Programm einzugeben ist. Außerhalb des Programmes kann die Maschine durch mit dem Getriebebremsmotor geschaltete Tasten vorwärts bzw. rückwärts gefahren werden, wobei vorwärts in Nahtungsrichtung bedeutet. Diese Betriebsart ist zum Fahren kurzer Wege vorgesehen, z.B. zum Anweben oder bei einer Störung. Soll die Nahtungsmaschine über größere Wege gefahren werden, wie dies beispielsweise nach fertiger Naht und ausgebautem Sieb der Fall ist, wenn die Maschine wieder in Anwebstellung gefahren werden muß, dann wird der Motor durch einen Mechanismus 36, der u.a. aus einer Sterngriffschraube 38 besteht, außer Eingriff gebracht. Die Nahtungsmaschine kann dann von Hand verschoben werden. Das Außer-Eingriff-Bringen des Getriebemotors 2, 37 erfolgt in der Weise, daß die Sterngriffschraube 38 (Fig.2a) gelöst wird, wobei der Motor festgehalten wird, bis diese Schraube 38 frei ist. Danach wird der Motor 2 gemäß Pfeil A in Fig.2a nach unten geklappt,wodurch die Schnecke 36a außer Eingriff kommt. Für den Automatikbetrieb wird der Motor 2 nach oben geklappt und die Nahtungsmaschine geringfügig hin- und herbewegt, bis die Schnecke 36a im Schneckenrad 36b einrastet, worauf die Sterngriffschraube 38 wieder angezogen wird.1, 12 and 13, the seaming machine is mounted on the chassis 1, which consists of a frame body 31 which is movable on wheels 30 and which can be moved in the rhythm of the weaving progress by means of a controlled drive motor 2. The chassis is a welded construction and serves as a frame for the machine table 32, and the brackets 6, 41, 51, 61 of the above-mentioned assemblies and as a feed unit 35 during the weaving process. The chassis can be driven automatically via a gear motor 2, 37 and subsequent large reduction. A feed rate of, for example, 0.4 mm / s can be achieved. The feed of the seaming machine is controlled depending on the fabric density, whereby the duration of the driving impulse must be entered into the program via a timing element depending on the warp thread division. Outside the program, the machine can be driven forwards or backwards using buttons switched by the geared brake motor, whereby forward means in the direction of the seam. This operating mode is intended for driving short distances, e.g. for picking up or in the event of a fault. If the seaming machine is to be driven over longer distances, as is the case, for example, after the seam has been finished and the sieve has been removed, if the machine has to be moved into the weaving position again, then the motor is shut down by a mechanism 36 which, inter alia, consists of a star grip screw 38 Intervention. The sewing machine can then be moved by hand. The disengagement of the geared motor 2, 37 takes place in such a way that the star grip screw 38 (FIG. 2a) is loosened, the motor being held until this screw 38 is free. The motor 2 is then folded down according to arrow A in FIG. 2a, as a result of which the worm 36a disengages. For automatic operation, the motor 2 is folded up and the sewing machine is moved slightly back and forth until the worm 36a engages in the worm wheel 36b, whereupon the star grip screw 38 is tightened again.

Das Gestell besteht im allgemeinen aus zwei Ständern 4, 4' und zwei Trag- und Führungsrohre 3, sowie bei breiten und schweren Sieben noch aus einem oder zwei Zwischenständern 4a zur Unterstützung der Tragkörper 3. Der Rahmenkörper 31 wird unterhalb der Arbeitsebene der Maschine auf beiden Seiten durch die beiden parallelen Trag- oder Führungsrohre 3 geführt, die wiederum an ihren Enden jeweils an einer waagrechten Traverse 32 der Ständer 4 befestigt sind. In der Regel weist der Ständer 4 keine Räder auf und steht an der Anwebseite der Nahtungsmaschine. Dieser Ständer hat die Funktion der Führung und Klemmung der Tragrohre 3, sowie der Klemmung der Hilfskettfäden bzw. Streifen 15, 15' und des Zentraldrahtes 16,und dient ferner zur Halterung der Umlenkrollen 13a zur Belastung des Magazinierbundes 13, 13', zur Anordnung der Anschlußbuchse der Stromzuführung sowie zur Befestigung eines Druckluftwendelschlauches. In einer weiteren Ausführungsform hat der Ständer 4' vier Lenkrollen 4b und 4c, wobei die Lenkrollen 4b mit Bremsen versehen sind, die während des Betriebes der Nahtungsmaschine festzustellen sind. Dieser Ständer hat die Funktion der Führung und Klemmung der Tragrohre 3 sowie der Klemmung des Magazinierbundes 13, 13'.The frame generally consists of two stands 4, 4 'and two support and guide tubes 3, as well as one or two intermediate stands 4a for wide and heavy screens to support the support body 3. The frame body 31 is below the working level of the machine on both Pages guided by the two parallel support or guide tubes 3, which in turn are each attached at their ends to a horizontal cross member 32 of the stand 4. As a rule, the stand 4 has no wheels and is on the weaving side of the sewing machine. This stand has the function of guiding and clamping the support tubes 3, as well as the clamping of the auxiliary warp threads or strips 15, 15 'and the central wire 16, and also serves to hold the deflection rollers 13a for loading the magazine collar 13, 13', to arrange the Connection socket for the power supply and for fastening a compressed air spiral hose. In a further embodiment, the stand 4 'has four swivel castors 4b and 4c, the swivel castors 4b being provided with brakes which can be ascertained during operation of the sewing machine. This stand has the function of guiding and clamping the support tubes 3 and clamping the magazine collar 13, 13 '.

Der aus dem Stand der Technik bekannte Jacquardkopf 40 ist mittig im Fahrgestell 1 angeordnet. Der Jacquardkopf 40 ist beispielsweise für 216 Fäden ausgelegt, wobei 198 Fäden benutzt werden, wenn die ersten zwei und die letzte Kartenreihe am Jacquardkopf freigelassen sind. Die beiden ersten Reihen der Jacquardkarten 44 werden zur Steuerung einer Doppelnadel 7a des Fadentrenners 7, 7' benötigt, auf die letzte Reihe wird verzichtet,um die Fachgeometrie zu verbessern. Als Wechseleinrichtung 46 für den Zentraldraht 16 ist an den Konsolen 51 je ein Pneumatik-Zylinder 45 angebaut. Die Zentraldrähte 16 werden durch im Webprogramm enthaltene Signale gesteuert. Neben der automatischen Bedienung des Jacquardkopfes 40 kann der Jacquardkopf durch entsprechende Schalter und Tasten manuell betätigt werden. Durch diese Schalter ist ein manueller Fachwechsel möglich.The jacquard head 40 known from the prior art is arranged centrally in the chassis 1. The jacquard head 40 is designed, for example, for 216 threads, 198 threads being used when the first two and the last row of cards on the jacquard head are left free. The first two rows of jacquard cards 44 are required to control a double needle 7a of the thread separator 7, 7 ', the last row is omitted in order to improve the geometry of the compartment. A pneumatic cylinder 45 is attached to the brackets 51 as a changing device 46 for the central wire 16. The central wires 16 are controlled by signals contained in the weaving program. In addition to the automatic operation of the jacquard head 40, the jacquard head can be operated manually by appropriate switches and buttons. A manual change of subject is possible with these switches.

Der Harnisch 50 ist in dem oben angegebenen Beispiel mit 198 Fäden bestückt` d.h. es kann eine Naht mit maximal 198 Fäden gefertigt werden. Bei Nähten mit kleinerer Anzahl von Hilfskettfäden 15, 15' sind diese im Harnisch 50 mittig aufzuteilen. Gegebenenfalls ist je nach Hilfskettfadenzahl jede dritte oder vierte Harnischöse 52 freizulassen. Die Vorspannung der Harnischfedern 53 kann durch Heben oder Senken des Federbodens 54 verändert werden.The harness 50 is equipped with 198 threads in the example given above, i.e. a seam with a maximum of 198 threads can be made. In the case of seams with a smaller number of auxiliary warp threads 15, 15 ', these are to be divided in the middle in the harness 50. Depending on the number of auxiliary warp threads, every third or fourth harness eyelet 52 must be left free. The bias of the harness springs 53 can be changed by raising or lowering the spring base 54.

Die Einzelfadenaufhängung 60 geht im einzelnen aus der Fig. 14 hervor. Danach ist jeder Hilfskettfaden 15, 15' mit einem Gewicht 62 versehen. Dazu wird der Hilfskettfaden 15, 15' nach dem Einfädeln in die Harnischöse 52 mit dem Verbindungsfaden 63 des Gewichts über eine spezielle Kupplung 64 verbunden. Die Gewichte 62 bestehen in einer Ausführungsform aus Messing. Bei einem Durchmesser von 4 mm ist ein Gewicht 62 600 mm lang und wiegt ca. 65 g.The single thread suspension 60 is shown in detail in FIG. 14. Thereafter, each auxiliary warp thread 15, 15 'is provided with a weight 62. For this purpose, the auxiliary warp thread 15, 15 'is connected to the connecting thread 63 of the weight via a special coupling 64 after threading into the harness eyelet 52. In one embodiment, the weights 62 consist of brass. With a diameter of 4 mm, a weight is 62 600 mm long and weighs approx. 65 g.

Die Fadentrenner 7, 7' sind wie die oben genannte Fachbildungseinrichtung 5 bzw. der Jacquardkopf 40 über eine Konsole 6 mit dem Fahrgestell 1 verbunden. Mit dem Fadentrenner 7, 7' werden die einzuwebenden Kettfadenenden 12, 12' einzeln aus dem Magazinierbund 13, 13' gelöst und über den Übergabegreifer 8, 8' positioniert. Die Kraft des Trennerkopfes 7b wird durch eine Feder 7c bestimmt, welche mit einem Pneumatik-Zylinder 7d gekoppelt ist. Die Fadentrenner 7, 7' sind mittels Rändelschrauben 7e horizontal und vertikal verstellbar. Der ganze Mechanismus 7 bis 7e und 8 bis 8g ist hochklappbar, wodurch ein freier Zugang zum Nahtbereich geschaffen wird. Die Größe der Trennernadeln 7a,die mit zwei Haken 7g, 7g' für Fadenvereinzelung bei feinen,mehrlagigen Geweben ausgerüstet sind, richtet sich nach dem Kettfadenprofil. Die Tiefe des Hakens 7a' sollte bei runden Kettfäden immer 25 bis 30% unter dem Kettfadendurchmesser liegen. Ovale und rechteckige Kettfäden erfordern speziell angepaßte Trennernadeln 7a. Der Fadentrenner kann sowohl automatisch als auch manuell bedient werden. Das gleiche gilt für den Fadentrennerspanner 7f bzw. die Bewegung der Trennernadeln.The thread separators 7, 7 ', like the above-mentioned shedding device 5 or the jacquard head 40, are connected to the chassis 1 via a bracket 6. With the thread separator 7, 7 ', the warp thread ends 12, 12' to be woven in are individually released from the magazine band 13, 13 'and positioned via the transfer gripper 8, 8'. The force of the disconnector head 7b is determined by a spring 7c, which is coupled to a pneumatic cylinder 7d. The thread separators 7, 7 'can be adjusted horizontally and vertically by means of knurled screws 7e. The whole mechanism 7 to 7e and 8 to 8g can be folded up, which creates free access to the seam area. The size of the separator needles 7a with two hooks 7g, 7g 'for Thread separation in fine, multi-layer fabrics is based on the warp thread profile. In the case of round warp threads, the depth of the hook 7a 'should always be 25 to 30% below the warp thread diameter. Oval and rectangular warp threads require specially adapted separating needles 7a. The thread separator can be operated both automatically and manually. The same applies to the thread tensioner 7f or the movement of the separation needles.

An der Konsole 6 sind Fadentrenner 7, 7' und Übergabegreifer 8, 8' befestigt. Wie bei den Fadentrennern 7, 7' ist jeweils ein Übergabegreifer 8 bzw. 8' für eine der beiden Gewebeseiten vorgesehen, wobei die mit dem Strichindex versehenen Bezugszeichen zu der einen Gewebseite und die keinen Strich aufweisenden Bezugszeichen zu der gegenüberliegenden anderen Gewebseite gehören. Die Übergabegreifer 8, 8' nehmen dem Fadentrenner 7, 7' den vereinzelten Faden 12a ab und übergeben ihn dem bereitstehenden Durchziehgreifer 9, 9'. Die Übergabegreifer 8, 8' werden mit pneumatischen Drehantrieben 8a (Fig. 15) angetrieben. Die Schwenkwinkel der Übergabegreifer 8, 8' können über Anschlagschrauben 8b stufenlos verstellt werden. Zur Quittierung der Endlagen sind an den Anschlagschrauben 8b elektronische Quittierelemente 8c montiert. Zur Endlagenverstellung der Übergabegreifer 8, 8' werden die Gewindestifte an den Quittierelementen 8c sowie die Kontermuttern 8e an den Anschlagschrauben 8b gelöst, worauf mit den Anschlagschrauben der Drehwinkel und somit die Position der Greifer justiert werden kann. Die Übergabegreiferspanner 8f sind mit elektrischen Kontakten 8g ausgerüstet. Beim Fehlen eines Fadens 12a schaltet die Steuerung auf Störung, so daß die Maschine außer Betrieb gesetzt ist. Zum Einlegen des fehlenden Fadens in den Übergabegreiferspanner 8f (Fig. 17a) wird der Spanner durch einen Schalter solange geöffnet, bis der Faden von Hand eingelegt worden ist.Thread separators 7, 7 'and transfer grippers 8, 8' are attached to the console 6. As with the thread separators 7, 7 ', a transfer gripper 8 or 8' is provided for one of the two fabric sides, the reference numerals provided with the line index belonging to one side of the fabric and the reference numbers not having a line belonging to the opposite other side of the fabric. The transfer grippers 8, 8 'take the separated thread 12a from the thread separator 7, 7' and transfer it to the pull-through gripper 9, 9 'ready. The transfer grippers 8, 8 'are driven by pneumatic rotary drives 8a (FIG. 15). The pivoting angle of the transfer grippers 8, 8 'can be adjusted continuously using stop screws 8b. Electronic acknowledgment elements 8c are mounted on the stop screws 8b to acknowledge the end positions. To adjust the end position of the transfer grippers 8, 8 ', the setscrews on the acknowledgment elements 8c and the lock nuts 8e on the stop screws 8b are loosened, whereupon the angle of rotation and thus the position of the grippers can be adjusted with the stop screws. The transfer gripper clamps 8f are equipped with electrical contacts 8g. In the absence of a thread 12a, the control switches to malfunction, so that the machine is deactivated. To insert the missing thread in the transfer hook tensioner 8f (FIG. 17a), the tensioner is opened by a switch until the thread has been inserted by hand.

Um die Anschlaglinie und die Naht im Nahtungsbereich auf Gewebeniveau zu halten, wurde ein Niederhalter 8d angebracht (Fig. 15).In order to keep the stop line and the seam in the seam area at the fabric level, a hold-down 8d was attached (FIG. 15).

Unterhalb der Arbeitsebene der Nahtungsmaschine sind die Durchziehgreifer 9, 9' (Fig. 18) sowie die beiden Webladen 10, 10' (Fig. 19) gelagert. Die Durchziehgreifer 9, 9' haben im wesentlichen zwei Funktionen, nämlich das Abnehmen der Kettfadenenden 12, 12' von den Übergabegreifern 8, 8' und Eintrag dieser Hilfsschußfäden in die wechselweise geöffneten Fächer 5a, 5b, 5c der Naht, ferner zur gegenseitigen Obergabe bzw. Annahme der Kettfadenenden 12, 12', die zurückgehoben werden. Der Antrieb der Durchziehgreifer 9, 9' erfolgt mit pneumatischen Drehantrieben 9a mit Endlagenquittierung 9b und angebauten Zylindern 9c für Zwischenpositionen 9d. Die Endlagen 9e der Durchziehgreifer 9, 9' sind mittels Anschlagschrauben 9f stufenlos verstellbar. Die Quittierelemente für die Endlagenquittierung 9b sind auf den Anschlagschrauben 9f befestigt und müssen vor dem Verstellen der Anschlagschrauben 9f abgenommen werden.The pull-through grippers 9, 9 '(FIG. 18) and the two weaving frames 10, 10' (FIG. 19) are mounted below the working plane of the sewing machine. The pull-through grippers 9, 9 'have essentially two functions, namely the removal of the warp thread ends 12, 12' from the transfer hooks 8, 8 'and the insertion of these auxiliary weft threads into the alternately opened compartments 5a, 5b, 5c of the seam, and also for mutual transfer or Acceptance of the warp thread ends 12, 12 'which are lifted back. The pull-through grippers 9, 9 'are driven by pneumatic rotary drives 9a with end position acknowledgment 9b and attached cylinders 9c for intermediate positions 9d. The end positions 9e of the pull-through grippers 9, 9 'are infinitely adjustable by means of stop screws 9f. The acknowledgment elements for the end position acknowledgment 9b are attached to the stop screws 9f and must be removed before the stop screws 9f are adjusted.

Zur Quittierung der Zwischenpositionen 9d sind an den unteren Wellenenden 9g der Durchziehgreifer 9, 9' Nocken 9h angebracht. Bei Erreichen der Zwischenposition 9d werden von diesen Nocken 9h Näherungsinitiatoren 9i geschaltet. Zur Justierung der Zwischenpositionen 9d wird die Nahtungsmaschine mit dem Hauptschalter ausgeschaltet. Danach werden die Druckluftanschlüsse 9j am Zylinderboden 9k und die Kontermuttern 9l am Zylinderhals 9m gelöst. Durch Drehen des Zylinders 9c wird die gewünschte Position 9d eingestellt. Danach werden die Luftanschlüsse 9j und die Kontermuttern 9l wieder festgezogen und anschließend die Nocken 9h für die Zwischenpositionsquittierung nachgestellt. Die Greiferköpfe 9n (Fig. 18a) sind mit elektrischen Kontakten 9p ausgerüstet, die bei einem fehlenden Faden ein Signal an die Maschinensteuerung geben, wodurch die Maschine auf Störung schaltet.To acknowledge the intermediate positions 9d, the pull-through grippers 9, 9 ′ have cams 9h attached to the lower shaft ends 9g. When the intermediate position 9d is reached, proximity cams 9i are switched by these cams 9h. To adjust the intermediate positions 9d, the seaming machine is switched off with the main switch. Then the compressed air connections 9j on the cylinder base 9k and the lock nuts 9l on the cylinder neck 9m are loosened. The desired position 9d is set by rotating the cylinder 9c. Then the air connections 9j and the lock nuts 9l are tightened again and then the cams 9h are readjusted for the intermediate position acknowledgment. The gripper heads 9n (Fig. 18a) are equipped with electrical contacts 9p, which give a signal to the machine control in the event of a missing thread, whereby the machine switches to malfunction.

In der Nahtungsmaschine sind zwei Webladen 10, 10' (Fig. 19) montiert, wobei sich eine auf der Bedienungsseite und die andere auf der hinteren Seite befindet. Die Webladen 10, 10' werden mit Pneumatikzylindern 10a angetrieben. Diese sind mit Drosselventilen 10b bestückt, mit welchen die Webladengeschwindigkeit regulierbar ist. Das Webblatt 10c wird für jedes Gewebe individuell aus entsprechenden Riten 10d und Distanzscheiben 10e zusammengestellt. Dabei kann es notwendig sein, daß mehr als ein Hilfskettfaden 15, 15' pro Durchlaß 10f eingezogen werden muß.Two weaving frames 10, 10 '(FIG. 19) are mounted in the seaming machine, one on the operating side and the other on the rear side. The weaving shutters 10, 10 'are driven by pneumatic cylinders 10a. These are equipped with throttle valves 10b, with which the shutter speed can be regulated. The reed 10c is composed individually for each fabric from corresponding rites 10d and spacers 10e. It may be necessary for more than one auxiliary warp thread 15, 15 'to be drawn in per passage 10f.

An der Konsole 6 sind ferner die zur Bedienung der Nahtungsmaschine notwendigen Schalt- und Überwachungseinrichtungen angebracht, die in dem Schaltpult angeordnet sind. Die im Schaltpult 70 angeordneten Schaltelemente und Anzeigengeräte dienen zur Betätigung und Überwachung des Fahrantriebes , der Fachbildungseinrichtung 5 der Fadentrenner und Fadentrennerspanner, der Durchziehgreifer und Durchziehgreiferspanner. Außerdem sind dort der Wahlschalter für Automatik und Einzeltakt und der Taster "Not-Aus" installiert.The switching and monitoring devices necessary for operating the sewing machine are also attached to the console 6 and are arranged in the control panel. The switching elements and display devices arranged in the control panel 70 serve to actuate and monitor the travel drive, the shedding device 5, the thread separator and thread separator tensioner, the pull-through gripper and pull-through hook tensioner. The selector switch for automatic and single cycle and the "emergency stop" button are also installed there.

Im Elektrik-Schaltschrank 80 sind der Hauptschalter, die Leistungsschalter, die Schaltschütze sowie die speicherprogrammierbare Steuerung angeordnet.The main switch, the circuit breakers, the contactors and the programmable logic controller are arranged in the electrical control cabinet 80.

Der Pneumatik-Schaltschrank 90 enthält die Ventile für sämtliche Greiforgane, Webladen, Steckdraht und Fachbildungseinrichtung (Rückwärtslauf).The pneumatic control cabinet 90 contains the valves for all gripping elements, weaving frames, plug-in wire and shedding device (reverse running).

In Fig. 1 ist das mit einer Stecknaht zu versehende Siebgewebe 11 unter der Nahtungsmaschine durchgeführt, d.h. die Maschine rollt auf dem mit einer Schutzschicht abgedeckten Sieb. Eine andere Möglichkeit der Führung des Siebgewebes 11 zeigt Fig. 2. Danach wird das Siebgewebe zeltartig über zwei Tragstangen 23, 24 über die Nahtungsmaschine hinweggeführt.In Fig. 1, the screen fabric 11 to be provided with a pin seam is carried out under the seaming machine, ie the machine rolls on the screen covered with a protective layer. Another way of leadership of the screen fabric 11 is shown in FIG. 2. The screen fabric is then passed over the seaming machine like a tent via two support rods 23, 24.

Die beiden Enden 21, 22 des mit einer Stecknaht zu versehenden Siebgewebes 11 werden vor dem Einlegen in die Nahtungsmaschine soweit vorbereitet, als in einem Bereich von ca. 10 bis 20 cm Breite die Schußfäden entfernt und danach je nach Gewebebindung 10 bis 30 Schußfäden auf den Kettfadenenden 12, 12' in ihrer genauen Webposition zu einem Magazinierbund 13, 13' zusammengefaßt werden. Die Magazinierbunde 13, 13' sind an den endseitigen Ständern 4, 4' des Gestells, von denen in Fig. 1 nur der eine dargestellt ist, mittels einer Klemmvorrichtung 14 befestigt.The two ends 21, 22 of the screen fabric 11 to be provided with a pin seam are prepared before insertion into the sewing machine as far as the weft threads are removed in an area of approximately 10 to 20 cm width and then 10 to 30 weft threads on the depending on the weave Warp thread ends 12, 12 'are combined in their exact weaving position to form a magazine band 13, 13'. The magazines 13, 13 'are attached to the end stands 4, 4' of the frame, of which only one is shown in FIG. 1, by means of a clamping device 14.

Vor Beginn der Nahtung liegt zwischen den beiden ausgefransten Enden des Siebgewebes 11, die von den Magazinierbunden 13, 13' gehalten werden, zu beiden Seiten des Drahtes 16, der als Zentraldraht zu bezeichnen ist, ein Drahtbündel, das aus Originalschußfäden des Gewebes bestehen kann oder ein aus Originalschußfäden des Gewebes bestehender Streifen 15, 15', auch Hilfskettstreifen genannt, der für den quer zur eigentlichen Siebrichtung verlaufenden Nahtwebprozeß die Kette darstellt. Der Zentraldraht 16 befindet sich genau in der Mitte zwischen den beiden Hilfskettstreifen 15, 15'. Die Hilfskettstreifen und der Zentraldraht sind in einer weiteren Spanneinrichtung 17 der Maschine befestigt, die ebenfalls von den Ständern 4, 4' getragen wird.Before the beginning of the seam lies between the two frayed ends of the screen fabric 11, which are held by the magazine coils 13, 13 ', on both sides of the wire 16, which can be referred to as the central wire, a wire bundle, which can consist of original weft threads of the fabric or a strip 15, 15 'consisting of original weft threads of the fabric, also called auxiliary warp strip, which represents the chain for the seam weaving process which runs transversely to the actual sieving direction. The central wire 16 is located exactly in the middle between the two auxiliary chain strips 15, 15 '. The auxiliary warp strips and the central wire are fastened in a further tensioning device 17 of the machine, which is also carried by the stands 4, 4 '.

Die Einzeldrähte der Hilfskette sowie der Zentraldraht werden in Ösen der Fachbildungseinrichtung 40, die sich oberhalb oder unterhalb der Webebene am Fahrgestell befindet, geführt. Die Abtrennung und Vereinzelung der Kettfadenenden 12, 12' (Fig. 1) mit Hilfe der Fadentrenner 7, 7' erfolgt in an sich bekannter Weise, wobei beidseitig der Naht gleichartige Nahtbildungselemente, wie Fadentrenner 7, 7', Übergabegreifer 8, 8', Durchziehgreifer 9, 9' und Webladen 10, 10' vorgesehen sind. Dabei übernimmt zunächst der Übergabegreifer 8' das vom Fadentrenner 7' vereinzelte Kettfadenende schwingt es nach unten in die Übergabeposition der Arbeitsebene, wie aus Fig. 3 ersichtlich. Danach übernimmt der Durchziehgreifer 9 das Kettfadenende und zieht den Kettfaden in das durch die Fachbildungseinrichtung 5 gebildete Vollfach. Daraufhin wird das so eingetragene Kettfadenende durch die Weblade 10' an die Webkante angeschlagen. Nunmehr wird vom rechten Teil des Hilfskettstreifens 15' ein Teilfach gebildet, wie aus Fig. 4 ersichtlich und dasselbe Kettfadenende vom Durchziehgreifer 9 in die genannte Übergabeposition zurückgeschwenkt, wo es der Durchziehgreifer 9' übernimmt. Der Durchziehgreifer 9' spannt danach das Kettfadenende an, woraufhin wiederum die Weblade 10' angeschlagen wird. Danach wird das Anschlußteilfach in der Hilfskettfadenhälfte 15' gebildet, der nächste Kettfaden vom Übergabegreifer 8' in die Übergabeposition gebracht und vom Durchziehgreifer 9 in das nun außenliegende Teilfach eingetragen, wie aus Fig. 5 ersichtlich, wonach mit der Weblade 10' wiederum der Kettfaden angeschlagen wird.The individual wires of the auxiliary chain and the central wire are guided in eyelets of the shedding device 40, which is located above or below the weaving plane on the chassis. The separation and separation of the warp thread ends 12, 12 '(Fig. 1) with the help of the thread separators 7, 7' takes place in a manner known per se, with seam-forming elements of the same type on both sides of the seam, such as thread separators 7, 7 ', transfer grippers 8, 8', pull-through grippers 9, 9 'and weaving frames 10, 10'. First, the transfer rapier 8 'takes over the warp thread end separated by the thread separator 7' and swings it down into the transfer position of the working plane, as can be seen in FIG. 3. Then the pull-through gripper 9 takes over the warp thread end and pulls the warp thread into the full compartment formed by the shedding device 5. The warp thread end thus entered is then struck against the selvedge by the sley 10 '. A partial compartment is now formed from the right part of the auxiliary warp strip 15 ', as can be seen in FIG. 4, and the same warp thread end is pivoted back by the pull-through gripper 9 into said transfer position, where the pull-through gripper 9' takes it over. The pull-through gripper 9 'then tensions the end of the warp thread, whereupon the sley 10' is struck again. Then the connector compartment is formed in the auxiliary warp thread half 15 ', the next warp thread is brought from the transfer gripper 8' into the transfer position and is inserted by the pulling gripper 9 into the now outer partial compartment, as can be seen from FIG. 5, after which the warp thread is again struck with the sley 10 ' becomes.

Da bei diesen Arbeitsgängen der Zentraldraht 16 am Fachwechsel nicht beteiligt ist, wird er von den Kettdrahtenden auch nicht umschlungen. Dies wird in Fig. 6 durch die Fäden oder Drähte a und b dargestellt. Danach wiederholen sich die im obigen beschriebenen Arbeitsgänge in derselben Reihenfolge mit den Folgedrähten oder -fäden b und d, wobei diesmal jedoch der Zentraldraht 16 in den Fachwechsel einbezogen und damit in die Kettdrahtschlaufe eingebunden wird. Somit bindet nur jeder zweite Kettfaden einer jeden Gewebeseite eine tragende Kettdrahtschlaufe 33, 33', die Zugkräfte übertragen kann.Since the central wire 16 is not involved in the change of subject during these operations, it is not wrapped around by the warp wire ends. This is shown in Fig. 6 by the threads or wires a and b. Thereafter, the operations described above are repeated in the same order with the following wires or threads b and d, but this time the central wire 16 is included in the change of subject and is thus integrated into the warp wire loop. Thus, only every second warp thread on each fabric side binds a load-bearing warp wire loop 33, 33 'which can transmit tensile forces.

Anschließend werden auf der anderen Hälfte 15 des Hilfskettstreifens die entsprechenden Arbeitsgänge wiederholt, wobei diesmal der Anschlag durch die Weblade 10 erfolgt, und die Drähte oder Fäden e, f sowie g, h eingetragen werden, wie in Fig. 6 dargestellt. Der Aufbau der beiden Webladen 10, 10' ist an sich bekannt und wird daher hier nicht näher erläutert.Subsequently, 15 of the auxiliary warp strip are on the other half the corresponding operations are repeated, this time the stop occurs through the sley 10, and the wires or threads e, f and g, h are entered, as shown in Fig. 6. The structure of the two weaving shops 10, 10 'is known per se and is therefore not explained in more detail here.

Anstelle eines einzigen Zentraldrahtes 16 lassen sich auch mehrere parallel nebeneinanderliegende Steckdrähte einweben, so beispielsweise zwei Steckdrähte 27, 27', wie in Fig. 7 dargestellt ist. Dadurch wird die Nahtfestigkeit vergrößert, weil alle Kettfäden des Gewebes mittragen im Gegensatz zu der in Fig. 6 dargestellten Naht. Die Verwendung von zwei Steckdrähten trägt insbesondere der Tatsache Rechnung, daß bei einem häufig benutzten vierschäftigen, sogenannten doppellagigen Gewebe die Schlaufen aufgrund der natürlichen Fadenkröpfung abwechselnd lang und kurz ausfallen, wie in Fig. 7 schematisch für ein einfaches Gewebe gezeigt ist. Die beiden Gewebeseiten 15, 15' sind dabei so gegeneinander versetzt angeordnet, daß jeweils eine lange Schlaufe 28 des linken Siebgeweberandes um beide Steckdrähte und eine kurze Schlaufe 29' des rechten Siebgeweberandes um den rechten Steckdraht 27', dann eine kurze Schlaufe 29 des linken Siebgeweberandes um den linken Steckdraht und eine lange Schlaufe 28' des rechten Siebgeweberandes um beide Steckdrähte 27, 27' vereinigt werden.Instead of a single central wire 16, it is also possible to weave in several parallel plug-in wires lying next to one another, for example two plug-in wires 27, 27 ', as shown in FIG. 7. This increases the seam strength, because all the warp threads of the fabric also carry, in contrast to the seam shown in FIG. 6. The use of two plug wires takes into account in particular the fact that in a frequently used four-ply, so-called double-layer fabric, the loops turn out to be alternately long and short due to the natural thread offset, as is shown schematically in FIG. 7 for a simple fabric. The two fabric sides 15, 15 'are arranged so that they are offset from one another such that a long loop 28 of the left screen fabric edge around both plug wires and a short loop 29' of the right screen fabric edge around the right plug wire 27 ', then a short loop 29 of the left screen fabric edge around the left-hand plug wire and a long loop 28 'of the right-hand screen fabric edge around both plug-in wires 27, 27'.

Um den Vorteil der vollen Nahtfestigkeit auf andere Weise zu erreichen, kann gemäß einer Verfahrensvariante so gearbeitet werden, daß die Kettfadenenden nach dem Ausfransen der rechten und linken Gewebeseite und ihrer Aufreihung in dem Magazinierbund einzeln jeweils in eine Schlinge 34 einer Drahtspirale 25 eingewoben werden, wobei jedes Kettfadenende in die Spirale einbindet, wie aus Fig. 8 ersichtlich. Dabei hat es sich als zweckmäßig erwiesen, die mit der eingewobenen Spirale 25 versehenen Gewebeseiten 15, 15' in einer in Fig. 9 dargestellten Vorrichtung 18 zu führen, die im Fahrgestell 1 der Nahtungsmaschine gelagert ist. Diese Vorrichtung wird insbesondere bei Verwendung von zwei parallelen Drahtspiralen 25, 25' benötigt, von denen jeweils eine einer Siebgewebeseite zugeordnet ist. Diese beiden Drahtspiralen sind nicht miteinander verbunden. Das linke und das rechte Gewebeende werden durch die Vorrichtung 18 mittels Führungsrollen 19, 20 so festgehalten, daß ein seitliches Verrutschen oder Verschieben verhindert wird. Danach werden die Drahtspiralen mit einem gemeinsamen Steckdraht außerhalb der Nahtungsmaschine verbunden.In order to achieve the advantage of full seam strength in a different way, a process variant can be used in such a way that the warp thread ends are individually woven into a loop 34 of a wire spiral 25 after the fraying of the right and left side of the fabric and their alignment in the magazine band each warp thread ends in the spiral, as shown in Fig. 8. It has proven to be expedient for the fabric sides provided with the spiral 25 to be woven into them 15, 15 'in a device 18 shown in FIG. 9, which is mounted in the chassis 1 of the sewing machine. This device is required in particular when using two parallel wire spirals 25, 25 ', one of which is assigned to a screen fabric side. These two wire spirals are not connected to each other. The left and right tissue ends are held by the device 18 by means of guide rollers 19, 20 in such a way that lateral slipping or shifting is prevented. Then the wire spirals are connected with a common plug wire outside of the sewing machine.

Bei Verwendung eines gemeinsamen Steck- oder Zentraldrahtes ist eine Führungsvorrichtung der in Fig. 9 gezeigten Art nicht erforderlich, da durch den gemeinsamen Zentraldraht eine ausreichende Lagestabilität sichergestellt wird.If a common plug-in or central wire is used, a guide device of the type shown in FIG. 9 is not necessary since the common central wire ensures sufficient positional stability.

Die im obigen beschriebene Nahtungsmaschine ist steuerungsmäßig so ausgelegt, daß sie auch in nur eine Gewebeseite eine Drahtspirale 25 der in Fig. 8 gezeigten Art einweben kann. Schließlich ist auch die Möglichkeit gegeben, die Drahtspiralen, die später beim Endlosmachen des Siebes mit einem gemeinsamen Steckdraht verbunden werden, zusammen mit einem in den Spiralen liegenden Draht 26 (Fig. 10) in die Gewebeseiten einzuweben.In terms of control, the seaming machine described above is designed in such a way that it can also weave a wire spiral 25 of the type shown in FIG. 8 into only one side of the fabric. Finally, there is also the possibility of weaving the wire spirals, which are later connected to a common plug wire when the sieve is made endless, together with a wire 26 (FIG. 10) lying in the spirals into the fabric sides.

Eine Alternativlösung zu Fig. 9, bei der die dort gezeigten Führungsrollen 19. 20 durch einen kräftigen, verschiebbaren Zentraldraht ersetzt werden, wird in Fig. 11 dargestellt. Die Funktion der Führungsrollen 19, 20 wird durch den Zentraldraht 21 übernommen, indem er die beiden Gewebeseiten 15, 15' verbindet und auf der Maschine lagefixiert.An alternative solution to FIG. 9, in which the guide rollers 19, 20 shown there are replaced by a strong, displaceable central wire, is shown in FIG. 11. The function of the guide rollers 19, 20 is taken over by the central wire 21 by connecting the two fabric sides 15, 15 'and fixing them in position on the machine.

Der Zentraldraht ist an seinem vorderen Ende angespitzt; der Vorschub desselben erfolgt entsprechend des Nahtungsfortschrittes.The central wire is sharpened at its front end; the feed is carried out according to the progress of the seam.

Die Nahtungsmaschine ist geeignet, technische Gewebe, wie z.B. Trockensiebe für Entwässerungs-, Papier- und Kartonmaschinen, unterschiedlichster Zusammensetzung in Kett- und Schußrichtung (Mono- oder Multifil in Polyester oder Polyamid) und ein- oder mehrlagiger Konstruktion mit Stecknähten auszurüsten. Ebenso können Basisgewebe für Naßfilze in ein- oder mehrlagiger Ausführung mit Stecknähten versehen werden.The sewing machine is suitable for technical fabrics such as To equip dryer fabrics for dewatering, paper and cardboard machines with a wide variety of compositions in the warp and weft directions (mono or multifilament in polyester or polyamide) and single or multi-layer construction with push-in seams. Basic fabrics for wet felts in single or multi-layer designs can also be provided with pin seams.

Aus Gründen der Permeabilitätsbeeinflussung kann es in einzelnen Fällen vorteilhaft sein, wenn im Nahtbereich die Hilfskettfäden, also im Originalgewebe die Schußfäden, aus einem anderen Material bestehen als die übrigen Schußfäden im Gewebe.For reasons of influencing permeability, it can be advantageous in individual cases if the auxiliary warp threads in the seam region, that is to say the weft threads in the original fabric, are made of a different material than the other weft threads in the fabric.

Claims (7)

  1. Seaming machine for producing an insertion-type seam for making a cloth belt, especially a wire cloth, endless, comprising thread separators (7, 7') disposed on either side of the insertion-type seam to be made for removing and separating the warp thread ends (12, 12') from the warp threads of each wire cloth side which are arranged in magazining bunches (13, 13'), a gripper system comprising transfer grippers (8, 8') and drawing-in grippers (9, 9') for inserting the separated individual threads into a shed preformed from auxiliary warp threads by a shedding mechanism (5), the individual threads adapted to be beaten-up to the respective selvedge within said shed by a driven lathe (10, 10') respectively provided for each seaming half, wherein subsequent to beaten-up the individual threads by means of the gripper system (8, 8'; 9, 9') either about one or several central wires (16, 27, 27') or wire helices (25) or, avoiding the central wire or wires or wire helices,directly into their own side of the cloth,
    characterized in that the thread separators (7, 7') are horizontally and vertically adjustable with knurle screws (7e) and can be driven by a pneumatic rotary driving means (8a), that the pivoting angles of the transfer grippers (8, 8') are continuously adjustable through abutment screws (8b) which are provided for confirmation of the end positions with electronic indicators (8c) and that the drawing-in grippers (9, 9') can be driven by pneumatic rotary driving means (9a) provided with end position confirmation (9b), wherein the end positions (9e) of the drawing-in grippers can be continuously adjusted by means of abutment screws (9f).
  2. Seaming machine according to claim 1, characterized in that the end position adjustment of the transfer grippers (8, 8') screw pins are provided at the electronic indicators (8c).
  3. Seaming machine according to claim 1 or 2, characterized in that the transfer grippers (8, 8') are cooperating with transfer gripper tensioners (8f) equipped with electric contacts (8g) which in case a thread is missing stop the operation of the machine by the machine control.
  4. Seaming machine according to one of the claims 1-3, characterized in that the drawing-in grippers (9, 9') can be driven by installed cylinders (9c) for intermediate positions (9d), wherein for confirming the intermediate positions (9d) at the lower shaft ends (9g) of the drawing-in grippers (9, 9') cams (9h) are provided which trigger approximation initiators (9i), when the intermediate position (9d) is reached.
  5. Seaming machine according to one of the proceeding claims, characterized in that the drawing-in grippers (9, 9') are provided with gripper heads (9n) having electric contacts (9p) which in case a thread is missing deliver a signal to the machine control.
  6. Seaming machine according to one of the proceeding claims, characterized in that one of the lathes (10, 10') is positioned on the operation side and the other on the backside and that both lathes (10, 10') are connected to pneumatic cylinders (10a) provided with throttle valves (10b) for speed adjustment of the lathes.
  7. Seaming machine according to one of the claims 1-6, characterized by a jacquard-head (40) with jacquard-cards (44) the two first rows thereof are provided for the controlling of a double needle (7a) of thee thread separator (7, 7'), wherein the jacquard-head (40) can be operated automatically as well as mechanically by corresponding switches and push bottons on changing the shed.
EP89106420A 1988-07-13 1989-04-11 Seaming machine for producing a seam for making a textile web endless. Expired - Lifetime EP0350574B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT89106420T ATE93288T1 (en) 1988-07-13 1989-04-11 SEWING MACHINE FOR MAKING A STITCH SEAM TO MAKE A FABRIC TAPE ENDLESS.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3823715A DE3823715A1 (en) 1988-07-13 1988-07-13 METHOD FOR THE PRODUCTION OF A STITCH SEAM TO ENDLESS A TEXTILE TAPE AND SEWING MACHINE
DE3823715 1988-07-13

Publications (2)

Publication Number Publication Date
EP0350574A1 EP0350574A1 (en) 1990-01-17
EP0350574B1 true EP0350574B1 (en) 1993-08-18

Family

ID=6358577

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89106420A Expired - Lifetime EP0350574B1 (en) 1988-07-13 1989-04-11 Seaming machine for producing a seam for making a textile web endless.

Country Status (6)

Country Link
EP (1) EP0350574B1 (en)
JP (1) JPH02264031A (en)
AT (1) ATE93288T1 (en)
CA (1) CA1318830C (en)
DE (2) DE3823715A1 (en)
NO (1) NO891566L (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5027483A (en) * 1990-01-31 1991-07-02 Asten Group, Inc. Apparatus for selectively releasing yarns from a fringe
DE19505280C2 (en) * 1995-02-16 1998-08-06 Staeubli Gmbh Method and device for the mechanical production of a seam for making a web of fabric endless

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2126995A1 (en) * 1971-06-01 1973-01-04 Pohl & Co Mesh junction - by leaving warps free at end zones to pass round a removable pin

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0134214A1 (en) * 1982-08-20 1985-03-20 Scapa-Porritt Limited Automatic seaming machine
EP0236601B2 (en) * 1986-02-22 1996-09-04 Asten Group Inc. Automatic seaming machine for fabric belts
DE3446941A1 (en) * 1984-12-21 1986-07-03 F. Oberdorfer, 7920 Heidenheim METHOD FOR THE PRODUCTION OF A STITCH SEAM TO ENDLESS A TEXTILE TAPE AND SEWING MACHINE
JPS62299561A (en) * 1986-02-20 1987-12-26 ウイスコンシン・ワイアズ・インコ−ポレ−テツド Apparatus for automatically forming joint to fabric belt

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2126995A1 (en) * 1971-06-01 1973-01-04 Pohl & Co Mesh junction - by leaving warps free at end zones to pass round a removable pin

Also Published As

Publication number Publication date
CA1318830C (en) 1993-06-08
DE58905307D1 (en) 1993-09-23
ATE93288T1 (en) 1993-09-15
DE3823715A1 (en) 1990-01-18
JPH02264031A (en) 1990-10-26
NO891566L (en) 1990-01-15
NO891566D0 (en) 1989-04-17
EP0350574A1 (en) 1990-01-17

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