CN2130170Y

CN2130170Y - Detecting device for weft yarn breaking of circular loom

Info

Publication number: CN2130170Y
Application number: CN 92230772
Authority: CN
Inventors: 游青榆
Original assignee: Individual
Current assignee: Individual
Priority date: 1992-08-19
Filing date: 1992-08-19
Publication date: 1993-04-21
Anticipated expiration: 2002-08-19

Abstract

The utility model discloses a detecting device for the weft yarn breaking of the circular disk loom. An electric generator is pivoted with the shaft of the shuttle horn yarn cop, and the bottom of shuttle is provided with a signal generator transmitting the signal which is supplied with the electric power by the electric generator; a signal receiver is arranged on the outer side of the operative track of the shuttles, and the signal receiver receives the signal transmitted by the signal generator; the signal generator outputs the pulse current to a pulse shaper which shapes the pulse current and transmits the signal shaped to a comparator to compare; whether the weft yarn is drawn up is judged; probes are arranged on the pressing plate of the shuttles. When the weft yarn is nearly drawn up, the probes come in contact with the iron shaft core of the yarn cop; the power supply of the signal generator is cut off by the control circuit to make the machine stop in advance.

Description

Detecting device for weft yarn breaking of circular loom

The utility model relates to a kind of sniffer of loom broken string, particularly a kind of disk loom weft yarn burn out check device.

The weft yarn of disk loom is installed on the shuttle, shuttle rotates around circuit orbit, make the warp thread of weft yarn and alternatively up and down be made into fabric cylindraceous, owing to be subjected to the influence that shuttle rotates and the restriction of warp thread, make quite difficulty of sniffer that installing is used to survey the weft yarn broken string.The weft yarn broken string sensor of round frame in the past, be must be as the device of dishing out with the dragon of shuttle, be equiped with permanent magnet on it as induction source, and when weft yarn breaks, utilize centrifugal force to make to dish out device to dish out, sensing apparatus is located on the track behind the device of dishing out, uses producing induced voltage with input control device, yet said structure has following shortcoming:

One, the installing of sensing apparatus can not be too far away from induction source, otherwise can't produce induced voltage, and must be positioned at the movable stroke of warp thread, because this device occupies certain space, can hinder operation element, especially when warp thread breaks, also increases the difficulty of wiring.

They are two years old, after machine begins to produce, if knitting bag size will change, in the time of just will producing the sack of different size, dragon must need to adjust, and relative sensing apparatus also needs to adjust, so then can cause trouble, especially machine exports some to than backward country, and its industrial level is lower, more can cause the difficulty in the maintenance.

Its three, device in the past can't stop before weft yarn exhausts prerequisite soon changing spool, just can predict and need wait until that weft yarn all exhausts, and so, not only can cause end product quality bad because of empty latitude, and needs to repeat threading and lose time.

Four, the device of dishing out of sensing apparatus is to locate by the pulling force of weft yarn at ordinary times in the past, so, then making to become bothersome time-consuming when threading.

The disk loom weft yarn burn out check device that provides a kind of reliability high is provided main purpose of the present utility model, its do not occupy in addition with the space, can the overslaugh operation, also can not influence the characteristics of warp thread wiring work.

Another purpose of the present utility model is to provide a kind of and is convenient to by dress and the disk loom weft yarn burn out check device adjusted, and it does not need to be adjusted after machine dispatches from the factory again, and knits bag specification when changing when what produce, also can not influence function of the present utility model.

Another purpose of the present utility model is to provide a kind of disk loom weft yarn burn out check device of being convenient to threading.

A kind of disk loom weft yarn burn out check device of the present utility model comprises: generator, signal generator, probe, signal receiver, pulse shaper, comparator.

Generator is articulated in holding on the turning cylinder of spool for cover on the shuttle, is used to provide power supply.

Signal generator is installed on the shuttle, and it is to be produced signal by generator powered.

Whether the weft yarn that probe is used to survey on the spool is about to exhaust.

Signal receiver is located at the disk loom track outside, the signal that sends in order to the received signal generator, and output pulsed current signal.

Produce a kind of signal behind the pulsed current signal of pulse shaper received signal receiver with certain waveform.

Whether comparator is a signal that pulse shaper is sent here and the synchronization waveform comparison of itself, break or exhaust soon in order to judge weft yarn.

By above mechanism as can be known, under normal situation, when the signal waveform of pulse shaper output is identical with the synchronization waveform of comparator, comparator is failure to actuate, and when weft yarn broke or exhausts soon, signal generator is output signal no longer, also output signal no longer of pulse shaper correspondingly, comparator is exported corresponding signal immediately, and the disk loom is shut down, so that wiring or replacing spool.

Below by most preferred embodiment and accompanying drawing disk loom weft yarn burn out check device of the present utility model is elaborated, in the accompanying drawing:

Fig. 1 is the stereogram of the shuttle on the disk loom;

Fig. 2 is the perspective exploded view of the utility model preferred embodiment;

Fig. 3, the 4th, the action schematic diagram of the utility model preferred embodiment;

Fig. 5 is the device schematic diagram of the utility model preferred embodiment;

Fig. 6 is the control circuit schematic diagram of the utility model preferred embodiment;

As shown in Figure 1, it is the shuttle 1 on the disk loom, and the spool of weft yarn 2 covers are held to hold and are contained on the shuttle 1, and the pressing plate 3 pressure holdings system spool 2 of stopping makes it can not influence the tension force of weft yarn because of inertia, weft yarn passes dragon palpus 4 and rotates on circuit orbit, makes weft yarn and warp thread be made into fabric cylindraceous.

Shown in Fig. 2,3, preferred embodiment of the present utility model comprises small generator 10, signal generator 20, probe (PROBE) 30, signal receiver 40, pulse shaper 50 and comparator 60; Generator 10 is articulated on the turning cylinder of spool 2, when spool 2 cover is held on it, and is subjected to the weft yarn pulling and when beginning to rotate, can generates electricity; Signal generator 20 is installed in the gap of shuttle 1 bottom, and it can be transmitted laterally, and its power supply is supplied with by generator 10, and also promptly when spool 2 does not rotate, generator 10 does not generate electricity, and signal generator 20 does not promptly produce signal; Probe 30 is installed on the pressing plate 3, and it joins with lead and generator 10, because pressing plate 3 is holding spool 2, and probe 30 contacts with the irony axle center of spool 2 when weft yarn exhausts soon, by the effect of circuit, makes generator 20 not to signal generator 20 power supplies; Signal receiver 40 is installed in the track outside (as shown in Figure 3), and it is to receive the signal of automatic signal generator 20 and it is sent to pulse shaper 50; Produce rectangular wave behind the pulse signal that pulse shaper 50 receives from signal receiver 40, and it is sent to comparator 60; The rectangular wave that comparator 60 is sent here pulse shaper 50, with the synchronous square wave signal comparison of itself, when weft yarn broke or exhausts soon, pulse shaper 50 did not promptly have square wave signal output, comparator 60 is sent the control cabinet of a signal to motor immediately, and the disk loom is shut down.

As Fig. 3,4, shown in 5, have four shuttles 1 on the track 5 of disk loom with phase quadrature run-in synchronism, signal receiver 40 is installed in the outside of track, under normal condition, generator 10 generatings make signal generator 20 produce signal, when shuttle 1 moves to signal receiver 40 positions, this signal will be received by signal receiver 40 and produce pulse current, and it is sent to pulse shaper 50, producing rectangular wave compares for the signal waveform of comparator 60 with itself, and when the weft yarn broken string of a shuttle 1 wherein or when exhausting soon, the signal generator 20 of this shuttle 1 just no signal produces, and so, then pulse shaper 50 does not promptly produce rectangular wave, comparator 60 is after comparing with the rectangular wave of itself (as Fig. 4 a.b), it is undesired to have found out a shuttle 1 action, and output signal immediately is through the motor control cabinet, the disk loom is shut down, so that carry out the work of wiring or replacing spool 2.

As shown in Figure 6, small generator in the disk loom weft yarn burn out check device of the present utility model is in order to power to other circuit part, signal receiver 40 receives the signal of automatic signal generator 20 and output pulse signal, through pulse reshaper 50 shapings output square wave signal for comparator 60 usefulness of making comparisons, output signal to the motor control cabinet with the stall of control motor by comparator 60, be used to survey the probe 30 whether weft yarn exhausts soon, provide corresponding signal to make power control signal to signal generator 20.

The utlity model has following effect:

Because assembly is installed in shuttle 1 and track 5 outsides itself, rather than between the stroke of warp thread alternatively up and down, do not use the space so do not occupy, do not influence operation, and probe 30 contacts with the irony axle center of spool 2 before to be weft yarns exhaust soon, the electric energy that generator 10 is sent is not connected to signal generator 20, and the disk loom is stopped in advance, to change spool 2, so, not only remove the repetition threading from, and can avoid the sky latitude to produce, in addition, the utility model is after installing, do not need to be adjusted again,, only need to adjust the position that dragon must 4 when knitting bag size will change the time, unlike sensing apparatus in the past, after adjusting dragon palpus position, relatively also to adjust the position of its sensing apparatus, increase user's difficulty, and, broken string perceptron in the past is because of by means of the weft yarn pulling force, and it need pass three holes when threading, and is time-consuming bothersome; And use sniffer of the present utility model, and during threading, only need wear a hole, it is much simple and easy to work.

In sum, disk loom weft yarn burn out check device of the present utility model is really than more progressive and have a value on the industry in the past.

Claims

1, a kind of disk loom weft yarn burn out check device is characterized in that: described disk loom weft yarn burn out check device comprises generator, signal generator, probe, signal receiver, pulse shaper, comparator;

Described generator is articulated in shuttle and holds on the turning cylinder of spool for cover, and generator provides power supply;

Signal generator is located on the shuttle, and it utilizes the power supply of generator to produce signal;

Probe is installed on the pressing plate of shuttle;

Signal receiver is located at the disk loom track outside, the signal that its received signal generator sends, and output pulsed current signal;

The pulsed current signal of pulse shaper received signal receiver, and it is shaped as rectangular wave;

Whether comparator is the synchronization waveform comparison with of the square wave signal of pulse shaper output itself, break or exhaust soon in order to judge weft yarn;

When the waveform that described pulse shaper is sent here is identical with the waveform of comparator, comparator is failure to actuate, and when weft yarn broke or exhausts soon, signal generator is output signal no longer, pulse shaper is output signal no longer also, and comparator is exported the signal that a control disk loom shuts down immediately.