JPS6032043Y2 - Sliver cutting detection device - Google Patents

Description

[Detailed description of the invention] The present invention relates to a sliver cutting detection device on a creel in a spinning machine having a sliver creel, such as a wire-stretching machine. When the sliver is cut off, the optical axis of the phototube is continuously interrupted by the cut sliver, so that the sliver cut can be reliably detected and the machine can be moved and started even in the sliver cut state. This avoids the conventional disadvantage of producing uneven weight sliver due to this.

Conventionally, a sliver cutting and stopping device on a creel of a spinning machine having a sliver is provided with a guide roller 2 on a creel 1 as shown in FIG. 1 is provided with a bracket 3 and a phototube 4 is attached to it, and if any of the slivers 5 out of the plurality of slivers 5 passing over the guide roller 2 is cut, the cut sliver 5a shown by the broken line will be connected to the optical axis of the phototube 4. The cut sliver is temporarily blocked from light by passing through, detects sliver breakage, and stops the operation of the machine, so that the cut sliver hangs down as shown by the broken line 5b.

Therefore, the running of the sliver stops before the end of the cut sliver is supplied to the draft roller section 9, and no incorrect sliver is spun out.

However, with recent high-speed spinning machines, a situation has arisen in which the phototube 4 cannot detect the cutting of the sliver.

In other words, the optical axis of the phototube 4 is temporarily interrupted by the phenomenon in which the cut end of the sliver rotates around the contact position with the guide roller 2, so when the sliver passes at high speed, the cut end As shown by the broken line 5c, the sliver approaches the front guide roller 2 in a wavy manner, and eventually causes a phenomenon in which it hangs down as shown by the broken line 5b without blocking the optical axis. It was the cause.

The shorter the distance between the guide rollers 2, 2, the more likely detection errors will occur.

In addition, because of temporary light blocking, if you press the push button for inching the machine base, the machine will be in a state as if the cause of the machine's operation stop has been canceled, and the machine will be able to operate and disconnect. If the push button for inching operation is operated by mistake before the sliver correction is completed, an insufficient number of slivers will be spun out, the weight of the sliver will change, and it will become an incorrect sliver, and this incorrect sliver will be removed. This required unnecessary labor and had a negative impact on production.

In order to solve the above-mentioned drawbacks, the present invention focuses on the fact that when the sliver on the guide roller 2 of the creel 1 is cut, the cut sliver ends up in a bent or hanging state, To ensure that the optical axis is blocked and to continue blocking the light, the phototube 4
By this, an electric circuit is formed so that the sliver cut detection signal is continuously output, and as long as this sliver cut detection signal is output, the machine base cannot be moved or started. A sliver cut detection device is provided which prevents the spinning of unauthorized sliver.

Hereinafter, an embodiment embodying the present invention will be explained with reference to FIGS. 2 and 4. In a spinning machine having a sliver creel, 1 is a sliver creel, 2 is a guide roller for the sliver, and the guide roller at the forefront of the creel 1 A bracket 3 to which a guide rod 10 is attached is provided at a lower position near the rear of the device 2, and a phototube 4 is attached to the guide rod 10.

In this case, the sliver 5 on the guide roller 2 is cut,
The cut sliver 5a is lowered and bent at the guide roller 2 and guide rod 10 at the forefront, and the hanging sliver 5b is attached so as to continue blocking the optical axis of the phototube 4, and the machine is operated. to stop it.

In short, the phototube 4 is installed so that the optical axis is located on the tangent to the rod 10, which is the starting point of the hanging of the cut sliver.

Therefore, even if the cut sliver is wavy as shown in 5C,
It comes into contact with the guide rod 10 and is calmed down, and quickly enters the hanging state 5b, so that light can be reliably blocked.

It is desirable that the phototube 4 be placed as close to the guide rod 10 as possible so that the light shielding state can be maintained reliably.

Incidentally, when the sliver is cut, the lifter rollers 6 and 7 provided between the sliver creel 1 and the draft roller section 9 are connected to the top lifter roller 6 and the bottom lifter roller 7.
When they come in contact with each other, the power is turned on and the switch 8 stops the operation of the machine.

As the sliver 5 in the phototube 4 is cut, the operation of the machine is stopped, and the relay 23 of the sliver cut detection circuit A is self-held and becomes a energized circuit, opening the contact 29 of the machine operating circuit B. The machine cannot be operated while the sliver is being cut, so in order to enable the machine to operate, the cut sliver must first be repaired, and the machine operation circuit B must be turned off. push button switch 3
2 or press the machine stop push button switch 33 to turn on relay 2.
The sliver cutting detection circuit A and the machine operation circuit are formed so as to release the self-holding of No. 3 and close the contact 29.

Further, FIG. 3 shows another embodiment, in which the optical axis of the phototube 4 is aligned with the guide roller 2 and the guide rod 1.
The phototube 4 is installed so as to be located on the tangent line connecting the guide rod 10, and the cut sliver 5b descends and is bent and tilted from the guide roller 2 as a starting point, and hangs down on the drooping tangent line of the guide rod 10. The sliver was stretched between the guide roller 2 and the guide rod 10 due to the weight of the hanging sliver, and the cut sliver was installed so as to continue blocking the optical axis of the phototube 4, which was brought as close to the guide rod 10 as possible. As in the above embodiment, the operation of the machine is stopped and the sliver cutting detection signal is continuously issued, and the other configurations are the same as in the above embodiment.

In short, the machine cannot operate unless the phototube 4 detects sliver breakage in the creel, stops the machine operation, causes the relay 23 of the sliver cut detection circuit A to self-hold, and repairs the cut sliver. This constitutes the machine operation circuit B.

The effects of the above configuration will be explained below.

When a plurality of slivers are pulled out and moving on the guide roller 2 provided on the sliver creel 1, when any of the slivers is cut, it is supported by the bracket 3 provided near the rear of the guide roller 2 at the forefront of the creel 1. guide rod 1
0 is located below the rear of the frontmost guide roller 2, so the cut sliver is bent and hangs down at the guide roller 2 and the guide rod 10, and becomes the state 5b, and is attached to the guide rod 10. The light-blocking state of the phototube 4 is continued even after the machine is stopped by blocking the optical axis of the phototube 4.

Therefore, the phototube 4 of the sliver cut detection circuit A shown in FIG. 4 detects the sliver cut, the contact 22 is activated, and the relay 23 is energized.

Since the contact 29 of the machine operating circuit B is open, even if the inching operation push button switch 32 is pressed, no current flows through the machine drive magnet switch 28, making it impossible to operate the machine.

Therefore, in order to restart the machine, first repair the cut sliver, then press the inching operation push button switch 32 or the machine stop push button switch 33, and the contact 25 of the self-holding circuit of the relay 23 will open. Since the self-holding of the relay 23 is released, the contact 29 is closed, and the inching operation and starting operation of the machine become possible.

As detailed above, the device of the present invention is equipped with a phototube that controls the machine operation stop so that the optical axis is located on the tangent line between the guide roller and the guide rod, and on a part of the hanging tangent line of the guide rod. In addition to reliably detecting sliver cutting using a phototube, the light-blocking state can be continued, making it impossible to operate the machine unless the cut sliver is repaired. Even if the inching push button switch 32 or the starting operation push button switch 31 is operated by mistake when the machine is not running, the machine will not operate, so the sliver will not be spun, and incorrect sliver due to changes in the weight of the sliver will be spun. Moreover, there is no need to remove illegal slivers, and production efficiency is improved.

Note that the present invention can also be embodied in the following embodiments.

(a) Installing multiple phototubes along the creel.

[Brief explanation of the drawing]

Fig. 1 is a side view showing a conventional phototube detection device, Figs. 2 and 3 are side views showing an embodiment of the device of the present invention, and Fig. 4 is a sliver cutting of the embodiment of Figs. 2 and 3. FIG. 2 is an electrical circuit diagram showing a detection circuit and a machine operation circuit. 2 Ni guide roller, 4: Phototube, 6, 7: Lifter roller, 10 Ni guide rod, 23: Sliver detection relay,
31: Start operation push button switch, 32: Inching operation push button switch, 33: Stop push button switch.

Claims (1)

[Scope of utility model registration request] In a spinning machine having a sliver creel, a guide rod is provided below the rear of the guide roller on the creel,
A sliver cutting detection device characterized in that a phototube for issuing a machine operation stop command is installed so that the optical axis is located on a hanging tangent of the guide rod or on a tangent between the guide roller and the guide rod.