EP0163140B1 - Arrangement pour le contrôle des fils pour un métier à tisser sans navette - Google Patents

Arrangement pour le contrôle des fils pour un métier à tisser sans navette Download PDF

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Publication number
EP0163140B1
EP0163140B1 EP19850105120 EP85105120A EP0163140B1 EP 0163140 B1 EP0163140 B1 EP 0163140B1 EP 19850105120 EP19850105120 EP 19850105120 EP 85105120 A EP85105120 A EP 85105120A EP 0163140 B1 EP0163140 B1 EP 0163140B1
Authority
EP
European Patent Office
Prior art keywords
thread
weft
pulse
stop motion
switching
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
Application number
EP19850105120
Other languages
German (de)
English (en)
Other versions
EP0163140A2 (fr
EP0163140A3 (en
Inventor
Wolfgang Baumgarten
Harald Böttcher
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.)
VEB Greika Greiz Weberei und Veredelung
Original Assignee
VEB Greika Greiz Weberei und Veredelung
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 VEB Greika Greiz Weberei und Veredelung filed Critical VEB Greika Greiz Weberei und Veredelung
Publication of EP0163140A2 publication Critical patent/EP0163140A2/fr
Publication of EP0163140A3 publication Critical patent/EP0163140A3/de
Application granted granted Critical
Publication of EP0163140B1 publication Critical patent/EP0163140B1/fr
Expired legal-status Critical Current

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Classifications

    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
    • D03D51/00—Driving, starting, or stopping arrangements; Automatic stop motions
    • D03D51/18—Automatic stop motions

Definitions

  • the invention relates to an arrangement for thread monitoring on a defenseless weaving machine with a weft thread monitor and a warp thread monitor for automatically switching off the thread drive realized by a motor via a coupling and with a switching device which can be actuated by the thread drive to determine the monitoring period for the thread run, the two of which depend on the position of the Thread drive dependent switching states, one of which excludes the actuation of a relay for switching off the thread drive.
  • the invention is particularly for machines with discontinuous weft movement, e.g. for rapier and jet weaving machines.
  • the invention is intended to create a simple, safe-acting, easy-to-use arrangement for thread monitoring that can be implemented with little effort.
  • the invention has for its object to design the arrangement for thread monitoring so that the thread break can be detected and processed essentially with the same means and the weaving machine is switched off immediately, regardless of whether a warp or weft thread is broken.
  • the invention is intended to enable slow running of a weaving machine without automatic thread monitoring for tying a broken thread or for inspecting the functionality of the weaving machine.
  • this object is achieved in that the clutch is assigned a switching element for the switching device, that the warp thread monitor and weft thread monitor are electrically connected in series, that the switching device is electrically connected in series with the switching element and that the switching device and the weft thread monitor are connected to one Logic processing unit for generating a switch-off pulse of constant duration, which is generated when the thread breaks. If necessary, it is advantageous to assign the warp thread monitor to a plurality of weft thread monitors which are arranged electrically parallel to one another.
  • the invention generates a time-limited, potential-free output signal, which actuates a brake magnet and thus stops a weaving machine, both in the event of a weft break and a warp break.
  • the time limit of the output signal avoids overloading the brake magnet, whereby it is not necessary to switch it off automatically.
  • an operating voltage source 3 is electrically connected to a power supply unit 1 via a filter 2, which supplies the supply voltage for a warp thread monitor 4, a switching element 5, a logic processing unit 6 with a set input 61 and a reset input 62, a pulse generator 7, an amplifier 8 and a switching stage 9 delivers.
  • a weft monitor 10 is electrically connected between the warp monitor 4 and the processing unit 6.
  • a switching device 11 is arranged in series with the switching element 5 and is likewise connected to the processing unit 6.
  • the pulse generator (monoflop) 7 is arranged downstream of the processing unit 6 and connected to the switching stage 9 via a pulse suppressor 12 and the amplifier 8.
  • the thread drive 13 is connected to the switching stage 9 via a filter 14 and acts on the switching element 5.
  • the thread drive 13 which is not shown in detail, consists of a drive motor and a mechanical clutch which can be switched on and off by hand and can be switched off suddenly with the aid of a brake magnet. A slow weaving process is possible by means of a sensitive engagement, the switching element 5 not yet being effective. As a result, the switching device 11 cannot deliver any synchronization pulses to the processing unit 6, and there is still no thread monitoring.
  • the warp thread monitor 4 can be designed as a lamella 15 which hangs on the respective warp thread 16 and, when this thread, which is oriented at right angles to the plane of the drawing, breaks a switch 17 for generating a signal to the processing unit 6 in the direction of an arrow 18.
  • the weft monitor 10 can be designed as a light barrier according to FIG. 3, which, on a support 20 provided with a hole 19, has a transmitter 21 and a receiver 22 which, when a weft 23 guided through the hole 19 at right angles to the plane of the drawing breaks, does not the running thread-related intensity fluctuations of the received light are no longer registered and therefore do not emit a low signal to the processing unit 6.
  • the warp thread monitor 4 responds and withdraws from the weft thread monitor 10 the operating voltage.
  • the weft monitor 10 then acts as if no weft 23 is present in the following thread entry.
  • the weft monitor 10 does not give a low signal to the processing unit 6 during the monitoring pulse of the switching device 11.
  • the switching device 11 is synchronized with the drive 13 of the weaving machine. Because of this synchronization, the weft thread is only monitored during the weft insertion. The switching device 11 emits a synchronization or monitoring pulse to the processing unit 6 with each thread entry.
  • a line 24 represents the pulse sequence from the warp and weft monitor, which are present as low signals at the reset input 62 of the processing unit 6.
  • a line 25 represents the synchronization signals which are present at the set input 61 of the processing unit 6 as low signals.
  • the switch-off pulses are illustrated by a line 26. The switch-off occurs when, as can be seen at point 27 in FIG. 4, the synchronization pulse, which in the example is 50 ms, is not completely in the guard pulse of 100 ms. There is then a switch-off pulse of approximately 1 s duration, which is formed in pulse shaper 7 (FIG. 1). The duration of the switch-off pulse is sufficient to bring a brake magnet (not shown) and the associated clutch into effect.
  • an RC element is provided as a pulse suppressor 12.
  • the switch-off pulses following the switch-on pulse are passed from the logic processing unit 6 via the pulse generator 7, which determines the duration of the pulses, passed through the pulse suppressor 12, amplified in the amplifier 8 and passed through the switching stage 9 and the output filter 14 to the thread drive 13 in order to enter there Disengage and thus bring the drive to a standstill.
  • 61 and 62 again denote the set and reset inputs of the processing unit 6 (FIG. 1), to which the RC elements 28, 29 for supplying voltage for the output transistors contained in the weft monitor 10 or in the switching device 11 and a timer Circuit 32 and the capacitors 33 and 34 necessary for the functionality or functional reliability belong.
  • An RC element 35 is identical to the pulse generator 7 of FIG. 1 and determines the pulse length of the switch-off pulse, which is from the circuit 32 via an RC element 36, which is identical to the pulse suppressor 12 of FIG. 1, and the amplifier 8 Switching stage 9 for actuating a brake magnet, not shown, is supplied.
  • the switching stage 9 comprises a relay 37 and a Frailaufdiode 38. With 39 and 40, the outputs of the operating voltage source 3 (Fig. 1) are designated, which supplies different supply voltages. E.g. can be present at output 39 24 V and at output 40 5 V.
  • the warp thread monitor 4 can contain a commercially available proximity initiator, a limit switch, a reed contact or a relay for supplying or interrupting the operating voltage of the weft thread monitor 10.
  • the weft monitor 10 can also work on an acoustic or piezo-electrical basis.
  • the switching element 5 can be a proximity initiator, a limit switch or a reed constant.
  • the switching device can be designed as a proximity initiator or reed contact.
  • FIG. 6 shows the warp thread monitor 4, to which three weft thread monitors 101, 102, 103 are electrically connected in a parallel arrangement and of which only one is ever effective.
  • the weft monitors 101, 102, 103 are connected together to the reset input 62. This makes it possible to use three different weft threads, e.g. of different colors to monitor.

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

Claims (2)

1. Dispositif de contrôle de fil d'un métier sans navette avec casse-trame et casse-chaîne pour t'arrêt d'un mécanisme d'entraînement de fil, réalisé par un moteur, par l'intermédiaire d'un embrayage, et avec dispositif de réglage de la période de contrôle du mouvement de fil, qui peut être actionné par le mécanisme d'entraînement de fil et qui présente deux états de commutation dépendant de la position du mécanisme d'entraînement de fil, l'une desquelles empêchant la manoeuvre d'un relais d'arrêt du mécanisme d'entraînement de fil, caractérisé en ce qu'à l'embrayage se trouve adjoint un élément de commutation du dispositif de réglage, que le casse- châine etle casse-trame sont électriquement montés en série, que le dispositif de réglage et l'élément de commutation sont életriquement montés en série et que le dispositif de réglage et le casse-trame sont électriquement reliés à une unité de traitement logique destinée à produire, au moment de la rupture de fil, une impulsion d'arrêt de durée constante.
2. Dispositif selon la revendication 1, caractérisé en ce que le casse-chaîne est suivi de plusieurs casse-trames montés en parallèle.
EP19850105120 1984-05-02 1985-04-26 Arrangement pour le contrôle des fils pour un métier à tisser sans navette Expired EP0163140B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DD26260584A DD238306A3 (de) 1984-05-02 1984-05-02 Anordnung zur fadenueberwachung einer schuetzenlosen webmaschine
DD262605 1984-05-02

Publications (3)

Publication Number Publication Date
EP0163140A2 EP0163140A2 (fr) 1985-12-04
EP0163140A3 EP0163140A3 (en) 1986-03-26
EP0163140B1 true EP0163140B1 (fr) 1988-10-26

Family

ID=5556701

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19850105120 Expired EP0163140B1 (fr) 1984-05-02 1985-04-26 Arrangement pour le contrôle des fils pour un métier à tisser sans navette

Country Status (6)

Country Link
EP (1) EP0163140B1 (fr)
JP (1) JPS60239550A (fr)
DD (1) DD238306A3 (fr)
DE (1) DE3565866D1 (fr)
ES (1) ES8608068A1 (fr)
SU (1) SU1564227A1 (fr)

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1010273B (it) * 1974-04-30 1977-01-10 Roy E Vella Spa Dispositivo elettronico di con trollo della inserzione dei fili di trama in telai di tessitura ad alimentazione continua della trama
US3989068A (en) * 1974-09-28 1976-11-02 Toyo Boseki Kabushiki Kaisha Automatic control apparatus for weaving machine
CH614246A5 (fr) * 1977-02-17 1979-11-15 Loepfe Ag Geb
GB2090619A (en) * 1981-01-07 1982-07-14 Leesona Corp Means and method for sensing loom conditions
GB2090620A (en) * 1981-01-07 1982-07-14 Leesona Corp Loom stop motion

Also Published As

Publication number Publication date
SU1564227A1 (ru) 1990-05-15
JPS60239550A (ja) 1985-11-28
DE3565866D1 (en) 1988-12-01
ES542760A0 (es) 1986-06-01
EP0163140A2 (fr) 1985-12-04
DD238306A3 (de) 1986-08-20
EP0163140A3 (en) 1986-03-26
ES8608068A1 (es) 1986-06-01

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