CS204673B1 - Weft presence feeler for run-out stop motions in weaving machines - Google Patents

Description

The present invention relates to a weft yarn detector for a weaving range stop of a weaving machine and a large coil and a life span for weaving machines with a longitudinal insertion of weft yarns in the rhythm of the fabric through the lamella comb insertion opening and slats.

Known sensors of weft yarn presence in weaving on a non-weaving machine utilize either the principle of mechanical wiping or optoelectronic sensing of the weft yarns. Known weft yarn detectors, working on the principle of mechanical gripping, no longer have the ability to monitor the weft yarn clogging on modern and fast weaving machines for the purpose of evojo. Sensors utilizing the principle of optoelectronic sensing have limited yellowing of the used optoelectronic organs, due to the difficult working conditions and the conversion of the optoelectronic organs.

It is an object of the present invention to provide a weft yarn presenter for a weaving machine stopper, which does not have the above-mentioned drawbacks and is characterized by a substantially increased lifetime and epoxy resistance, while respecting the latest knowledge in the area of clogging and weft yarn control on the weaving machine. The weft yarn has been present in the pulling-out opening of the access part of the sensor-control lamella ^

204 673

The features of the invention will be apparent from the following description and drawings, wherein FIG. 1 example of a weft presence sensor for weft bottom weaving machine with high reliability and two controllers! FIG. 2 shows an example of a double weft anlman using the optoelectronic principle of FIG. 3 shows an example of another alternate binary onlmann.

In Fig. 1, there is a weft thread presence sensor for the low-end stop of the weaving machine with high reliability and durability, composed of a holder 1aaial 2 of two optoelectronic emitters 2, which does not show an optoelectronic receiver and a non-visible light guide 6, connecting cable 5,

Upon passing the weft yarn (not shown), the aileron of the control lamellae 2 has two voltage pulses, which are processed by the simple electronics of the annuller 4 and the knuckle 5 are routed to the notch weaving range evaluation circuits. In the case of a malfunction of one sensor circuit formed by the optoelectronic emitter 2 and the transmitter 6 of the electromagnetic radiation, the electronic electronics of the sensor 4 supply voltage pulses from the other sensor circuit. The team of my encoder has durability and reliability *.

An example of a double sensing of the presence of the weft yarn 4I flowing through the pulling gap of the control lamella is illustrated in FIG. That two optoelectronic elements 3 of the receiver 3 are juxtaposed in one arm, and in the other arm two electromagnetic lamp 2 juxtaposed.

According to Figure 213, the RioSonia guarantees, in the case of diofunction, one optoelectronic circuit of the optoelectronic element and of the optoelectronic element. - the receiver 3 and the bile of the electromagnetic radiation 2 further impregnates the operation of an undiscovered weft stopper (not shown).

The foregoing description of alternative optoelectronic animations of weft presence sensor circuits for weft dolsts of the weave and durability weave apparatus of the present invention is not to be construed as limiting the scope of the invention.

Claims (3)

OBJECT OF THE INVENTION 1, a weft presence sensor for a weft downstop of a large machine with a high reliability and durability for weaving the weft yarn through the weft rhythm of the pressurized medium in the weaving rhythm of the lamellar tomb, characterized in that there is only one inlet part of the sensor a metal lamella (1) having at least two optoelectronic receivers (3) in one arm at the point of the gap (5), and an optoelectronic radiator (2) in the other arm, the outputs of the optoelectronic receivers (3) being permanently electrically connected to input of the output part of the sensor - sensor electronics (4), which form a separate construction colok, while 204 673 optoelectronic shells (2) are permanently electrically connected to a controllable source of electric current, which is part of the sensor electronics (4), 2. The weft presence sensor according to claim 1, characterized in that at least two optoelectronic radiators (2), at least one transmitter (6), a sensor electronics (4) are mounted on the metal lamella holder (1) while simultaneously working at least two input pulses, kébl / 5 / for connecting the sensor to the weft-detector after-wavelength evaluation electronics.