CS241316B1 - Weft yarn detector for conventional view weaving machines - Google Patents

Abstract

The purpose of the invention is to detect the arrival of the weft thread of a non-confusor weaving machine into a controlled area. The invention relates to a landing stop for unorthodox weaving machines with weft thread insertion by a swinging movement using a channel formed in a profiled beam. The essence of the invention is in the solution of the sensor and its location on the profiled beam.

Description

241316

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a weaving sensor for weaving loose weaving machines with weaving by means of a profiled rim-6a, where the weft yarn arrives in a controlled area and electronic impedance and level adaptation to further processing by the contactless opto-electronic sensing device. data.

Up to now known weft yarn sensors have been designed to operate in the present invention. The mechanical-electronic sensors consist of a mechanical contact which is separated from the switching element by a non-conductive weft thread material. The sensors on the conductive principle are a scanning material such that the two electrodes or one is bridged by the weft thread, thereby producing input data for further processing. The piezoelectronic and trieboelectronic transducers are located on the weft yarn inlet portion, forming a sensor signal through the material measurement on the sensor.

Optoelectronic transducers operate on a refractive principle, i.e., the principle of reflecting the emitted beams and weaving them over, wherein the transducers are positioned in front of the overflow channel or scan the weft material. Another opto-electronic transducer known in the art is a transducer in which the weft material is pre-injected into a controlled area by means of a mechanical device and only then a pickup.

Due to the high inertia and very high centrifugal forces, overload and vibration, the mechanical electronic sensors can work at higher machine speeds. The conductivity sensors work on machines with a weft yarn transfer using a conductive medium, eg water, and I cannot process glass and staple yarns. The piezoelectronic and tri-boelectronic sensors are used only in machines in which the weft yarn is clogged with a diverter channel by means of a barbell, or in the case of needle weaving machines. The reflective principle optoelectronic sensors are used in certain types of materials and their reliability in large-scale processed materials is very low. Optoelectronic sensors that operate on the principle of weft yarn pre-emitting send a signal for further processing up to the bottom of the weft yarn, thereby moving the machine to a non-technological position, otherwise the weaving machine's mechanical stopper is heavily loaded .

The aforementioned drawbacks are eliminated by the weft yarn detector of the confinement-free weaving machine according to the invention, which consists of a sensor disposed behind the profiled beam, wherein the sensing portion is pierced by the beam tooth so as to result in the doprofil in which the weft yarn moves . 4

The sensor consists of twenty parts, part of the transmitter and part of the receiver. The receiver is located on a beam in the profile of the weft thread cushion. The transmitter is positioned in front of the beam so that it emits electromagnetic radiation toward the beam's clogging layer, whilst covering the entire area. The receiver located behind the beam and displaced at the control point of the weft range in the profiled beam is composed of electromagnetic radiation receivers or n-receivers, for example, 1 od n of light guides or 1 n n receivers provided with a shaping orifice may be used to transmit electromagnetic radiation to the receivers. Adaptations or evaluation electronic circuits are located in the receiver, which are connected to other circuits in the switchboard by an electric cable. The loudspeaker circuitry located beneath the batten-type weaving machine allows the electromagnetic radiation to be conducted from the transmitter by means of a 1-light guide, and also from a profile wound to weft the weft yarn to the receivers located beneath the battening machine.

In the case of a weft yarn arrest, the weft thread interrupts the electromagnetic radiation emitted by the radiators directly or directly into the space controlled by the weft yarn detector of the weft yarn detector. through the light guides, thereby providing a voltage pulse on the receivers side, which is further treated and strengthened. The voltage pulse is further processed in the evaluation circuits. If there is an error in the weaving process, the so-called non-misset in the i-th turn, the electromagnetic radiation is not interrupted, and in order to generate a voltage pulse on the side of the receivers, the evaluation electronic evaluates the error in the fabric, thereby a stop pulse is generated for stopping the weaving machine in a position for ripping the wrong weft. It is possible to adjust the weft sensor of the weft yarn counter to the weaving machine according to the width of the fabric and is practically independent of the machine speed. A further advantage of the weft yarn detector of the weft yarn weaving machine is that the weft yarn is removed and thus the weaving machine can be equipped with stopping in the technological positions even at very high speeds.

The weft yarn sensor is shown in the drawings, in which: FIG. 1, FIG. 2, FIG. Naobr. 1, the profiled beam 1 of the weft thread clogging weft yarn 3 of the weft yarn 3 is shown, the receiver 4 of the weft yarn winding machine for the waxless weaving machine is positioned downstream of the profiled beam 1 and is pushed by the profiled beam tooth 1. The electromagnetic emitter 6 is at - mounted on the batten holder 7, 8-O-receivers 4.

Claims (3)

SUBJECT A thread-detector for non-confined weaving machines is characterized in that the electromagnetic radiation receiver (4) is pushed by a tooth (5j of the profiled beam (1) at the profile location (2j), the electromagnetic radiation transmitter (6) being located opposite the receivers. (4). 2. A weft yarn range sensor for the invention of a confuser weaving machine according to claim 1, characterized in that the electromagnetic radiation receiver (4) and the electromagnetic radiation transmitter (6) are composed of 1 - n number of elements, the transmission of electromagnetic radiation being ensured by 1 - n number. Fiber optic (10).