JPS61239024A - Device for stopping machine stand of fasciated spinning machine - Google Patents

Abstract

PURPOSE:When fasciated spinning machine equipped with a cutter to each spindle is stopped all at once, to prevent winding of poor part of yarn round packages, by operating first all the cutters to cut yarn and then stopping a main motor. CONSTITUTION:When all the spindles of a fasciated spinning machine having a great number of the spindles provided with the feed guides 1 for the sliver S, the drafting parts 2, the fasciated spinning parts 3, the yarn drawing parts 4 and 5, the yarn defect sensors 11, the yarn guide parts 6 and 7, the yarn winding parts 8-10 and cutters for cutting yarn (not shown in the figure) are stopped all at once, firstly the cutter of each spindle is operated all at once to cut the yarn and a main motor is stopped.

Description

DETAILED DESCRIPTION OF THE INVENTION Object of the Invention (Field of Industrial Application) This invention relates to a machine stop device for a binding spinning machine.

(Prior art) In a binding spinning device, as shown in FIG. 3, a sliver S supplied from a trumpet 1 is supplied as a ribbon-like fiber bundle through a drafting device 2 to a adding nozzle 3, and by the action of the heating nozzle 3, the sliver S is Y, and is pulled upward by the draw-off roller 4 and top roller 5 disposed above the heating nozzle 3, and is pulled out by the yarn guide 6 and traverse guide 7.
After that, the package P is wound up onto a bobbin 10 which is rotatably supported at the tip of a cradle arm 8, is pressed against a winding drum 9, and is rotated by the drum 9. Also, a slab catch V-11 is installed on the downstream side of the draw-off roller 4 (on the winding drum 9 side).
is provided, and when the slab catcher 11 detects a yarn defect in the slab or the like, a cutter (not shown) is activated based on the detection signal to cut the yarn, remove the yarn defect, and cut the yarn. After the splicing process, spinning is started again.

On the other hand, in cases other than yarn breakage or yarn defect removal work, for example, at the end of a workday, it is necessary to stop all spindles simultaneously during package formation. Conventionally, in this case, when a machine stop switch is turned on as shown in FIG. 4, the back roller 12 of the draft device 2 is stopped and the supply of the sliver S is stopped.

Next, the timer is activated for the time required to wind the yarn Y and sliver S onto the package P from the back roller 12 to the winding drum 9, and then the main motor of the machine is stopped due to the timer time-up. The entire machine is now stopped.

(Problems to be Solved by the Invention) If the conventional machine stop method is adopted, all the remaining sliver S downstream of the back roller laboratory 2 passes through the heating nozzle 3 and becomes yarn Y, which is packaged P. However, since the sliver S is not continuously supplied, the sliver S at the end becomes thinner than normal, and as a result, the shape of the end of the thread wound around the package P becomes thinner. It becomes uneven and appears to be stuck to the package P. Then, when spinning is resumed, the yarn splicing process is carried out by the yarn splicing machine.The yarn splicing machine sucks the yarn end wound into the package and rewinds it to the heating nozzle. There is a problem that the yarn end suction efficiency decreases and the yarn splicing operation takes time because the shapes of the yarn ends are irregular.

Structure of the Invention (Means for Solving Problems) According to the present invention, each spindle is equipped with a cutter that is activated when there is a defect in the running yarn. and,
The machine base is equipped with a control circuit that operates the cutters of each weight simultaneously by turning on a machine stop switch, and then stops the main motor.

(Function) The cutter equipped for each spindle operates independently for each spindle to cut the yarn if there is a thread defective part that requires treatment in the running thread. On the other hand, when the machine stop switch is turned on to stop the spinning of all spindles at the same time during package formation, the cutters installed on each spindle operate simultaneously, and the yarn Y being spun is placed in a predetermined position. They were cut off all at once. The main motor is then stopped. The cutter is in a normal spinning state - Since the yarn is cut at a predetermined point at the same time, the ends of the yarn after cutting are aligned with all spindles, and even when the yarn is wound into a package after cutting, the ends of the yarn are aligned. Therefore, the yarn end suction success rate is improved during the yarn splicing operation by the yarn splicing machine for restarting spinning, and the yarn splicing operation is performed smoothly.

(Embodiment) An embodiment embodying the present invention will be described below with reference to FIGS. 1 to 3. The configuration of each spindle of the binding spinning device is the same as that of the conventional device shown in FIG. 3, and the control circuit for stopping the machine is different from that of the conventional device. Slab catcher 11 is a running thread Y
A sensor that outputs an electrical signal corresponding to the diameter or cross-sectional area of the yarn, and a processing device that compares and determines the diameter and length of the defective yarn part with a reference value based on the signal, and issues a signal to cut the yarn or stop the machine. A cutter, which is activated by signals from the machine, is integrated into the machine. During normal spinning, the yarn is cut for each spindle by a signal from the processing device.

Now, if you want to stop all the spindles simultaneously during package formation, first press the machine stop switch PBSTOP. By pressing the stop switch PBSTOP, the second
The relay CR1 in the circuit (2) is energized and self-holding, and its normally open contacts CR1a in the third circuit (2), the fourth circuit (2), and the fifth circuit V are closed. When the normally open contact CR1a of the third circuit (■) closes, the solenoid SQL that operates the cutter disposed on each spindle is excited, the cutter operates, and the yarn Y being spun is cut simultaneously from all spindles. .

In addition, the normally open contact CR1a in the fourth circuit ■ and the fifth circuit V
When the timers TR1 and TR2 close, the timers TR1 and TR2 start counting. The timer TRI is set to time out after the time required for the lifting operation of the cradle arm 8 to be completed after the thread cutting operation. The timer TR2 times up after the time necessary for the cut end of the thread Y connected to the package P to be wound onto the package P, and the normally open contact TR2 in the sixth circuit
a closes. By closing the normally open contact TR2a, the relay CR2 is excited, and the excitation signal causes the cradle arm 8 of each weight to move upward to a predetermined position. Thereafter, the timer TR1 times up, the normally closed contact TR1b in the first circuit opens, the electromagnetic contactor MS for driving the main motor is demagnetized, and the main motor is stopped. Also, due to the demagnetization of the magnetic contactor MS, the normally open contact MSa in the second circuit ■, which had been kept open until then, opens and the relay CRI opens.
is demagnetized, and accordingly, the solenoid SoL, ties vTR1, TR2, and relay CR2 of each circuit also return to their initial states.

As mentioned above, when the machine is stopped, the cutters installed on each spindle are operated simultaneously on all spindles to cut the yarn Y during normal spinning at the same time, so that the end shape of the yarn that is then wound into a package is changed. becomes constant, the yarn end suction success rate improves during yarn splicing work using a yarn splicing machine to restart spinning, and the yarn splicing work is performed smoothly.

Note that the present invention is not limited to the above-mentioned embodiment. For example, instead of providing a timer TR1 that starts counting at the same time as the machine stop switch is turned on to stop the main motor, the cradle arm 8 may be raised to a predetermined position. The purpose of this invention can be realized by changing the circuit configuration so that the main motor is turned off by a signal from a limit switch or the like that turns on when activated, or by installing the slab character sensor and cutter in different positions. It is also possible to arbitrarily change the shape, structure, etc. of each part within a range that does not deviate from the above.

Effects of the Invention As described in detail above, according to the present invention, when all the spindles are stopped simultaneously during package formation, the cutters disposed on each spindle are operated at the same time to keep the yarn Y in the normal spinning state at a predetermined position. Since the yarn ends are cut all at once, the shape of the yarn ends wound around the package P is constant for all spindles, and the yarn end suction success rate of the yarn splicing machine is improved during yarn splicing work by the yarn splicing machine for re-spinning. This has the excellent effect of allowing work to be carried out smoothly and, in turn, improving the operating efficiency of the machine.

[Brief explanation of drawings]

Fig. 1 is a flowchart showing the operating sequence of the device of the present invention when the machine is stopped, Fig. 2 is a control circuit diagram, Fig. 3 is a partially cutaway schematic side view showing the binding spinning device, and Fig. 4 is a conventional 2 is a flowchart showing a method for stopping the machine. Cradle arm 8, slab catcher 11, machine stop switch PBSTOP, timer TRI. TR2, Yarn Y0 Patent applicant: Toyota Industries Corporation, Toyota Industries, Ltd.
Person Patent Attorney On 1) Hironobu Figure 3

Claims (1)

[Claims] 1. Turning on a machine stop switch in a binding spinning machine that is equipped with a sensor that monitors defects in the running yarn and a cutter that operates when the sensor detects a defect and cuts the yarn. A machine stop device for a binding spinning machine, comprising a control circuit that operates the cutters of each spindle at the same time and then stops the main motor.