EP0350574A1 - Machine pour fabriquer une liaison sans fin d'une bande de tissu. - Google Patents

Machine pour fabriquer une liaison sans fin d'une bande de tissu. Download PDF

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Publication number
EP0350574A1
EP0350574A1 EP89106420A EP89106420A EP0350574A1 EP 0350574 A1 EP0350574 A1 EP 0350574A1 EP 89106420 A EP89106420 A EP 89106420A EP 89106420 A EP89106420 A EP 89106420A EP 0350574 A1 EP0350574 A1 EP 0350574A1
Authority
EP
European Patent Office
Prior art keywords
wire
fabric
machine according
seaming machine
warp
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.)
Granted
Application number
EP89106420A
Other languages
German (de)
English (en)
Other versions
EP0350574B1 (fr
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 & Co KG Industriegewebe-Technik GmbH
F Oberdorfer Siebtechnik GmbH
OBERDORFER FA F
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by F Oberdorfer & Co KG Industriegewebe-Technik GmbH, F Oberdorfer Siebtechnik GmbH, OBERDORFER FA F filed Critical F Oberdorfer & Co KG Industriegewebe-Technik GmbH
Priority to AT89106420T priority Critical patent/ATE93288T1/de
Publication of EP0350574A1 publication Critical patent/EP0350574A1/fr
Application granted granted Critical
Publication of EP0350574B1 publication Critical patent/EP0350574B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
    • D21F1/00—Wet end of machines for making continuous webs of paper
    • D21F1/0027—Screen-cloths
    • D21F1/0054—Seams thereof

Definitions

  • the invention relates to a method for producing a plug-in seam for making a fabric band endless according to the preamble of claim 1 and claim 4. It also relates to a seaming machine for carrying out the method.
  • the fabric belts of the type mentioned at the outset 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 by joining the two prepared fabric ends with a plug wire.
  • the production of these plug-in seams has so far been done 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 object of the invention is therefore to provide a method and a machine that he possible to mechanize or automate the cumbersome and time-consuming manual work and thereby achieve a noticeable relief for the workforce and thus an increase in productivity and the quality of the seams.
  • the warp thread ends are lined up mechanically after fraying the right and left side of the fabric in a magazine band, separated individually in accordance with the weaving order and alternating around one in the middle of the auxiliary warp strip, consisting of at least one wire Central wire of any cross-sectional area are returned and woven, so that the central wire is alternately wrapped by a warp thread end of the right and left side of the fabric according to the progress of work, while the opposite warp thread is woven back without wrapping the central wire, the warp thread ends after the entry in the Woven regulations corresponding open compartment are posted parallel to the selvedge.
  • the method according to the invention consists in that the warp thread ends are lined up mechanically in a magazine band after the right and left side of the fabric have been frayed, separated according to the weaving order and individually woven back around a loop of a wire spiral, with the use of two wire spirals paralleling them lie and are not connected to each other, and wherein the left and right ends of the tissue are held so that a lateral sliding or shifting is prevented.
  • the wire spirals are then connected with a common jumper wire outside the sewing machine.
  • warp thread ends are lined up mechanically after fraying the right and left side of the fabric in a magazine band, separated in accordance with the weaving order and individually woven back by a loop of a wire spiral, whereby when using two wire spirals, these are pushed into one another parallel, and, by pushing a central wire through the two spirals as the seam progresses, connecting them and thus the two ends of the fabric and securing them against each other and on the machine against slipping.
  • a suturing machine which is characterized by thread separators arranged on both sides of the plug-in seam to be produced for separating and separating the warp thread ends from the warp threads arranged in magazine bundles on each side of the fabric, a gripper system consisting of transfer grippers and pull-through grippers for inserting the triggered single threads in an auxiliary thread pre-formed weaving shed in which the single threads can be struck against the respective fabric edge by a driven sley per seam half, whereby after striking the single threads through the hook system either around one or more central wires or wire spirals or while avoiding the central wire or wires Wire spirals can be woven back into their own fabric side.
  • the sewing machine consists essentially 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, 91, 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 / sec 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 timer 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, and for wide and heavy screens from one or two intermediate stands 4a 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 of the power supply, as well as 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 is designed for two hundred and sixteen threads, using one hundred and ninety-eight threads if the first two and the last row of cards on the jacquard head are left blank.
  • 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 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. For seams with a smaller number of auxiliary warp threads 15, 15 ', these are to be divided in the middle of 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 after threading into the harness eyelet 52 with the connecting thread 63 of the weight via a special coupling 64.
  • 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 ' are like the above-mentioned shedding device 5 or the jacquard head 40 connected to the chassis 1 via a bracket 6. With the thread separator 7, 7 ', the warp threads 12, 12' to be woven in are individually released from the magazine band 13, 13 'and positioned via the transfer hook 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 with 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.
  • the depth of the hook 7a ' should always be up to 30% below the warp thread diameter for round warp threads.
  • 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.
  • transfer grippers 8, 8' are attached on the console 6 thread separators 7, 7 '.
  • a transfer gripper 8 or 8' is provided for one of the two fabric halves, the reference numerals provided with the line index belonging to the one fabric half and the non-dashed reference numerals belonging to the opposite other fabric half.
  • the transfer grippers 8, 8 ' take the thread separator 7, 7' from the separated thread 12a and transfer it to the pull-through gripper 9, 9 'provided.
  • 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 set screws 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.
  • the pull-through grippers 9, 9 ' have essentially two functions, namely the removal of the warp thread ends 12, 12' from the transfer grippers 8, 8 'and entry of these auxiliary weft threads into the alternately open compartments 5a, 5b, 5c of the seam, further for mutual transfer or Assumption 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 ' can be adjusted continuously by means of stop screws 9f.
  • the acknowledgment elements 9b are fastened on the stop screws 9f and must be removed before the stop screws 9f are adjusted.
  • the pull-through grippers 9, 9 'cams 9h are 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 91 on the cylinder neck 9m are loosened.
  • the desired position 9d is set by rotating the cylinder 9c.
  • 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 ' (Fig. 19) are mounted, one on the operating side and the other on the rear side.
  • the reed 10C is composed individually for each fabric from corresponding rites 10d and spacers 10e. It may be necessary that more than one auxiliary warp thread 15, 15 'must be drawn in per passage 10f.
  • the switching and monitoring devices necessary for operating the seaming machine are also attached to the console 6 and are arranged in a 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 for the thread separators and thread separator tensioners, the pull-through grippers and pull-through hook tensioners.
  • 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 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 '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.
  • a wire bundle which can consist of original weft threads of the fabric or one of the original weft threads of the fabric strips 15, 15 ', also called auxiliary warp strips, which represents the chain for the crosswise to the actual direction of the sieve weaving process.
  • 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 separator 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 from the thread separator 7' and swings it down into the transfer position of the working level, 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. Then the end of the warp thread entered in this way is struck by the sley 10 'on the selvedge. Now a part compartment is formed from the right part of the auxiliary warp strip 15 ', as can be seen from Fig. 4 and the same warp thread end is swung back by the pulling gripper 9 into the above-mentioned transfer position, where it is taken over by the pulling gripper 9'. The pull-through gripper 9 'then tensions the warp thread end, whereupon the sley 10' is struck again.
  • 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 of each fabric end binds a supporting warp wire loop 33, 33 ', which can transmit tensile forces.
  • plug wire 16 instead of a single central wire 16, it is also possible to weave in a plurality of parallel juxtaposed plug wires, for example two plug wires 27, 27 ', as shown in FIG. 7, which increases the seam strength because all the warp threads of the fabric are carried in contrast to the one in FIG. 6 illustrated seam.
  • 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 shown schematically in FIG. 7 for a simple fabric.
  • the two fabric ends 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 the left jumper wire and a long loop 28 'of the right sieve mesh around both jumper wires 27, 27' are combined.
  • 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 right and left side of the fabric has been frayed and lined up in the magazine band each warp wire end binds into the spiral, as shown in Fig. 8.
  • the screen cloth ends provided with the spiral 25 to be woven into them 15, 15 'in a device shown in Fig. 9 to guide 18 which is mounted in the chassis 1 of the seaming machine.
  • This device is required in particular when using two parallel wire spirals 25, 25 ', one of which is assigned to a screen side. These two wire spirals are not connected to each other.
  • the left and right end of the fabric are held by the device 18 by means of guide rollers 19, 20 so that a 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 so 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 will later be connected to a common plug wire when the screen is made endless, together with a wire 26 (FIG. 10) lying in the spirals into the fabric ends.
  • 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 ends 15, 15 'and fixed in position on the machine.
  • the central wire is sharpened at its front end, the same is fed 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.

Landscapes

  • Woven Fabrics (AREA)
  • Sewing Machines And Sewing (AREA)
  • Treatment Of Fiber Materials (AREA)
  • Display Devices Of Pinball Game Machines (AREA)
  • Decoration Of Textiles (AREA)
EP89106420A 1988-07-13 1989-04-11 Machine pour fabriquer une liaison sans fin d'une bande de tissu. Expired - Lifetime EP0350574B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT89106420T ATE93288T1 (de) 1988-07-13 1989-04-11 Nahtungsmaschine zur herstellung einer stecknaht zum endlosmachen eines gewebebandes.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3823715 1988-07-13
DE3823715A DE3823715A1 (de) 1988-07-13 1988-07-13 Verfahren zur herstellung einer stecknaht zum endlosmachen eines gewebebandes und nahtungsmaschine

Publications (2)

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

Family

ID=6358577

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89106420A Expired - Lifetime EP0350574B1 (fr) 1988-07-13 1989-04-11 Machine pour fabriquer une liaison sans fin d'une bande de tissu.

Country Status (6)

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

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0440595A2 (fr) * 1990-01-31 1991-08-07 Asten, Inc. Dispositif pour relacher sélectivement des fils d'une frange

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19505280C2 (de) * 1995-02-16 1998-08-06 Staeubli Gmbh Verfahren und Vorrichtung zur maschinellen Herstellung einer Naht zum Endlosmachen einer Gewebebahn

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1984000782A1 (fr) * 1982-08-20 1984-03-01 Scapa Porritt Ltd Machine pour couture automatique
EP0236601A1 (fr) * 1986-02-22 1987-09-16 Asten Group Inc. Machine automatique pour la jonction de deux extrémités de bande
EP0185907B1 (fr) * 1984-12-21 1989-10-11 WIS Engineering GmbH Procédé pour la fabrication d'une liaison à charnière pour l'assemblage des extrémités d'une bande et machine pour sa mise en application

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2126995A1 (de) * 1971-06-01 1973-01-04 Pohl & Co Verfahren zur herstellung einer loesbaren nahtverbindung von gewebtem bahnfoermigem material sowie nach diesem verfahren hergestellte nahtverbindung
JPS62299561A (ja) * 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 織布ベルトの自動継目形成装置

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1984000782A1 (fr) * 1982-08-20 1984-03-01 Scapa Porritt Ltd Machine pour couture automatique
EP0185907B1 (fr) * 1984-12-21 1989-10-11 WIS Engineering GmbH Procédé pour la fabrication d'une liaison à charnière pour l'assemblage des extrémités d'une bande et machine pour sa mise en application
EP0236601A1 (fr) * 1986-02-22 1987-09-16 Asten Group Inc. Machine automatique pour la jonction de deux extrémités de bande

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0440595A2 (fr) * 1990-01-31 1991-08-07 Asten, Inc. Dispositif pour relacher sélectivement des fils d'une frange
EP0440595A3 (en) * 1990-01-31 1992-01-02 Asten Group, Inc. Apparatus for selectively releasing yarns from a fringe

Also Published As

Publication number Publication date
EP0350574B1 (fr) 1993-08-18
DE3823715A1 (de) 1990-01-18
CA1318830C (fr) 1993-06-08
DE58905307D1 (de) 1993-09-23
JPH02264031A (ja) 1990-10-26
NO891566D0 (no) 1989-04-17
NO891566L (no) 1990-01-15
ATE93288T1 (de) 1993-09-15

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