JPS5994626A - Yarn breakage sensing apparatus in ring twisting machine - Google Patents

Abstract

PURPOSE:A yarn breakage sensing apparatus capable of sensing the yarn breakage with a high accuracy by irradiating a yarn running while forming a balloon between a snail wire and a traveler with light, and sensing the periodic change in light caused by the running yarn. CONSTITUTION:A yarn breakage sensing apparatus having a sensor (S) capable of projecting light to a yarn (Y) running while forming a balloon between a snail wire 4 and a traveler 10 of a ring twisting machine (A), and sensing the reflected light provided on a ring plate 13. A circuit consisting of a photocoupler 15 capable of sensing the presence or absence of the yarn (Y) by the presence or absence of a periodic change in the reflected light, an amplifier circuit 16 and a monostable multivibrator 17 is provided in the sensor (S).

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a device for detecting thread breakage in a ring type yarn twisting machine.

Ring-type yarn twisting machines, especially ring-type spinning machines that use them, have been improved year by year, and as a result of greater automation and fewer troubles, in recent years one worker has been able to handle an extremely large number of spindles. He has now become responsible for management.

As a result, workers have to walk around a wider area of floor space than ever before, causing problems such as increased fatigue and delayed detection of problems.

Most of these troubles are caused by thread breakage at each spindle,
Therefore, it is desirable to have an appropriate means for detecting the light breakage and notifying the operator. However, in general, the above-mentioned spinning machines, etc., have narrow intervals between spindles due to the ring type twisting machine, and due to their structure, the thread It was difficult to properly install a break detection device.

Creeping involves a draft device, which is the part where the thread runs in a straight line, and a sui.
The nozzle of the pneuma device that sucks the end of the thread when the thread breaks is installed between the thread wire and the thread.It is difficult to install the above-mentioned detection device here due to space constraints, and it also interferes with the thread tying operation. Become.

A method of detecting yarn breakage by monitoring the vibration state caused by the frictional contact of the yarn in the swivel wire has also been considered, but this method easily malfunctions due to the vibration of the spool wire itself and is unreliable. It was something.

The present invention focuses on the above-mentioned circumstances and provides a device that reliably detects the occurrence of yarn breakage in a ring-type yarn twisting machine.
Conventionally, it was overlooked that it was impossible to install a detection device due to the change in the yarn traveling path, but the yarn balloon section, that is, the yarn traveling between the swivel wire and the traveller, was monitored with a sensor, and the sensor was installed in front of the sensor. The occurrence of a break is detected based on whether or not the thread crosses periodically.

Hereinafter, the implementation of the present invention will be explained based on the drawings.

Figure 1 shows the outline of a ring-type treetop spinning machine (A), in which the lobing (2) unwound and supplied from the yarn feeding bobbin (1) is drafted through the draft device (3), and then the yarn (Y) is The yarn is then twisted by a ring type twisting machine (5) through which a swivel wire (4) is passed, and then wound onto a winding bobbin (6).

The thread machine (5) is equipped with a belt (rotating at 7 rotations), a pivoted spindle (8), a nibobin (6), and an annular ring (9) around the bobbin (6). At the same time, a traveler (1o) is provided so as to be able to run freely along the ring (9), and the thread that has passed through the swivel wire (4) is inserted into the traveler (10) and sent to the bobbin (6). ).

Tension is applied to M (Y) by the rotation of the bobbin (6), and the traveler (1 (υ) rotates and travels along the ring (9),
The thread (Y) is Sui Luwire (4) and Traveler (10
) and at the same time draw the balloon (11) between the bobbin (
6) Twisted yarn (Y) is wound around the outer periphery to form a pipe yarn (1
2) is formed.

A large number of bobbins (6) are arranged at relatively narrow equal intervals from the machine longitudinal direction eIJ to the direction orthogonal to the plane of the paper in FIG. ) (13), and the ring plate (13) is gently moved up and down by a lifting device (not shown), and is evenly wound around the bobbin (6).

(S) is the above ring plate (13), J- is the nokuru.
(14) is an infrared and green reflective sensor fixed towards the draft device (3) and the Snell wire (4).
) is a suction nozzle placed between the

The circuit configuration of the second sensor (S) is as shown in Figure 2, which mainly consists of a photocoupler (15) and an amplifier circuit (6).
and a monostable multivibrator (17).

The infrared rays (19) emitted from the infrared rays L E D (::18) are
(Y) and enters the phototransistor (20), which emits a thread signal (a). In a normal winding state, the balloon (11) is formed periodically, and therefore the thread signal (a) is also generated repeatedly through a circumference 11u+(TI) which is equal to the rotation period of the balloon (11).

The thread signal (a) passes through an amplifier (16), is amplified and waveform-shaped as shown in signal (b), and is then processed by the multivibrator (
17) is input into the eight-person power. The multivibrator (
17) uses TO4528B-P manufactured by Toshiba's Kamiki Co., Ltd., which has an output that is slightly longer than the cycle (T1) of the above thread signal (a), that is, No. 111 (b), when the external force is constant. It is assumed that it has a ruth width (T2).

The Q output end of the multivibrator (17) is connected to a lamp described later, and the thread signal (a) or normal oil 0 cycle (T
1), the signal (C) output from the Q output terminal maintains a high output state and lights up the lamp, or a light cutout occurs and the above-mentioned pulse width (T2) is generated. Signal inside (1)
) is not input, the signal (C) is inverted and becomes (b
Without power, this (from 2) 2d lamp lights up.

Next, the above-mentioned suction nozzle (14) will be explained with reference to FIGS. 1 and 2. The tip opening of the nozzle (14) faces close to the running path of the thread (Y), and the base end of the suction nozzle (14) faces the machine base. It communicates with the pneumatic device (21) provided in the longitudinal direction.

In the pneumatic device t(22) shown in FIG. 2, the base end of the pneumatic duct (21) communicates with the blower (23), and 81 of the ducts (21) are connected to the partition wall (24).
It is divided into two parts along the longitudinal direction.

This division is performed in such a way that the side with the suction nozzle (14) and the side without the suction nozzle (14) are separated, that is, the pneumatic duct (21)
is divided into a nozzle side (25) and a blower side gl'J (26). In addition, the nozzle side part (25) is divided into a plurality of small chambers (28) by partition plates (27) for each fixed number of nozzles.
Further, each small chamber (28) is provided with a shutter (29) that is opened and closed by a cylinder (not shown) so that the small chamber (28) and the blower side portion (26) can communicate with each other. .

The shutter (29) is opened and closed in conjunction with the aforementioned rung lighting.

That is, assuming that the lamps are provided at appropriate height positions for each @, and that one lamp is provided for each machine, for example, thread breakage occurs at the weight (30) in Fig. 3. Then, the weight (
A lamp (31) attached to the thread 30) and a lamp (32) attached to the drawing machine are both lit to notify the operator of the occurrence of thread breakage.

At the same time, the shutter (29a) of the small chamber (28a) to which the K1130) belongs opens, and the suction force by the blower (23) strongly acts only on the suction nozzle (14) in the small chamber (28a).

According to the above-mentioned device, the sensor (S) connects the ring plate (13) to two (bifurcated), so the thread (
It is also possible to install it on the front side of the outbound travel path of the sensor (S), so there is no problem with the installation space.
1) is used to detect whether or not it passes periodically, so there is less risk of malfunction and thread breakage can be reliably detected.

Further, since the sensor (S) moves upward along with the ring plate (13), a suitable monitoring position can always be maintained.

When a thread breakage occurs, the sensor (S) lights up the lamp on the corresponding weight and machine base, allowing the operator to easily know the location where the thread breakage occurs.
) applies suction force only to the suction nozzle (14) in the area where the thread breakage occurs, so the power of the blower (23) can be reduced accordingly.

The monitoring position of the sensor (S) is limited to the travel of M (Y) in the balloon (11) part.
The situation is the same for monitoring the running of 0).
The yarn balloon portion in the present invention includes the above-mentioned traveler.

As described above, according to the present invention, it is possible to realize a yarn breakage device that can be easily installed in a ring type yarn twisting machine and that operates reliably.

[Brief explanation of the drawing]

Figure 1 is a side view of the ring-type Kozue spinning and castle, Figure 2 (A) is a circuit diagram configuring the sensor, Figure (0) is a time chart showing the waveforms of each part, and Figure 3 is the configuration of the pneumatic device. FIG. (4)...Swirl wire (5)...Ring type twisting machine

Claims (1)

[Claims] A ring is disposed around the rotating bobbin, and a traveler is provided that freely runs along the ring, and the yarn sent out through the Snell wire is guided to the bobbin via the traveler while making it into a balloon. A sensor is installed to monitor the yarn balloon part between the swivel wire and the traveler in a bamboo ring-type yarn twisting machine.
A yarn breakage detection device for a ring type yarn twisting machine, characterized in that yarn breakage is detected by sensing the presence or absence of yarn running that periodically interrupts the sensor.