JPS5953728A - Cutting of end yarn in spinning machinery - Google Patents

Abstract

PURPOSE:To cutting end yarn connected to a full bobbin yarn recovered from the end yarn winding part of spindle onto a conveyor belt in spinning machinery, to cut the end yarn safely and securely, by transferring the conveyor belt at a given distance, driving the spindle. CONSTITUTION:In spinning machinery wherein the full bobbin yarn 4 attached to the spindle 2 is doffed from the spindle 2 by an auto-doffer and fixed to the peg 11 of the belt conveyor 10, after doffing is over, the conveyor belt 10 is driven first, the conveyor belt 10 is transferred at a given distance, the spindle 2 is driven, and the end yarn of the spinning machinery is cut. EFFECT:Even if mistakes of the end yarn cutting may occur by the cutter 6 for spindle, they yarn of full bobbin will not be wound around an empty bobbin.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for cutting tail yarns from full tube yarns collected on a conveyor belt.

FIG. 1 shows a conventional tail thread trimming device for, for example, an O8 infant machine. In this figure, a spindle controller 3 is disposed above a ring rail l that moves up and down, and is equipped with a traveler 3 that guides the yarn around the bobbin of a rotating spindle, heats it, and then winds the tangent yarn onto the bobbin. At the bottom of the fi tube, there is provided a tail end winding section S where the rear rail l suddenly descends and winds the thread several times. It's getting rough. A cutter device 6 is disposed above the tail thread winding section S to be fitted into the spindle co and for cutting the winding thread. As shown in FIG. 2, this cutter device 6 has a protrusion that restricts the tail thread, and a blade portion that cuts the tail thread and is lower than the sieve of the protrusion 7 in the axial direction of the spindle. It has a cylindrical shape.

As for the operation of the spinning machine, the thread wound on the bobbin descends to the same height as the ring rail 3 or the end bobbin winding part S, and then it is passed several times to the rear end bobbin winding part that forms the inclined thread. The thread winding operation ends when the spindle co stops rotating.

This state is shown in FIG. And, while the spindleco also pulls out the Manken thread during dotting, the Shiri thread l.
3 comes into contact with the blade g between the protrusions 7 and 7, and is cut by this blade.

However, in the method of cutting the tail thread as described in connection with FIG. 1, the tail thread may not be cut reliably depending on the contact position of the tail thread with the cutter, the type of thread, the cutting condition of the blade, etc. In this case, the yarn in the tail winding section S of the VC is also pulled out from the spindle coil and remains connected to the #pipe yarn q placed on the VC mount 1' on the collection conveyor belt (see Figure-43).

In this state, when an empty bobbin is fitted into the spindle co, the spinning machine is retracted, and the raw bobbin rotates, the yarn from the full yarn on the collection conveyor belt is wound onto the empty bobbin, resulting in a defective bobbin. Put it away. Further, as this winding continues, the bobbin fitted into the spindle co is wound twice by the yarn from the full tube yarn and the yarn wound by the traveler 3, and the hobbin becomes thicker than normal. Therefore, there was a risk that the winding thread on the outside of the bobbin and the guide ring of the traveler 3 would come into contact with each other, and the frictional heat between them would cause a fire.

The present invention has been made in order to solve the above-mentioned drawbacks, and an object of the present invention is to provide a method for cutting the tail threads of a spinning machine, which can reliably cut the tail threads.

Next, 1, for example, the method of cutting the tail threads of Mori and Akira, which was carried out on Kozue-no-Iso, will be explained in detail with reference to the drawings.

In Fig. 3, the six-pipe yarn q extracted from the Svindruko by an automatic doffing machine is fitted into a beng // attached to a conveyor belt lθ.
The hq bobbin/-2 is fitted into the spindle 2.

Then the conveyor belt is Kozue Yo 1. Driven by hil, which drives the spear. The purpose of this is that by moving the conveyor belt lO, even if the spindle co and the conveyor belt IQ
Even if the tail thread 13 is connected to the upper swirl layer/yarn q, the tail thread 13 will be cut off, so this is intended to prevent future troubles. In Fig. 1, MSM is a drive electromagnetic contactor for the drive motor of the spinning machine, MSC is a drive electromagnetic contactor for the belt conveyor, and TIRC is a delay timer that performs a time delay of "-". EB is a normally open contact that detects when the bobbin thread is inserted and closes the contact.EB is a normally open contact that detects when an empty bobbin/2 is inserted into the spindle and closes the contact. Closing machine 'i?' is an open contact.

From the circuit configuration, when a full thread is fitted into the hook ii on the belt lθ, the normally open contact PC closes and the conveyor is driven M.
SC and delay timer TRC become conductive. As a result, the belt conveyor is driven and the timer 1'Rc starts operating. here.

The delay time T set by timer TRCK is
It is necessary to move the belt by a considerable distance (the length is 30 cm) to move O in the direction of movement (in the direction of the arrow in Figure 3) and pull it off from the tail end winding part S. It is set to be the time. Hour 1i, Ij
Until T is reached, the delay timer Tf (Cti > the open point is open, and therefore the contact FB is closed. However, the motor-driven electromagnetic contactor MSM is not conductive. When the delay time TIJ'''- has elapsed, the belt 10 has advanced a predetermined distance in the direction of travel, and the tail thread is pulled to its permissible width of 9 or more, and the tail thread is pulled away from the tail thread winding portion S. It's definitely been cut off.

After this time T has elapsed, the normally open contact of the timer 'I'RC is closed and the drive magnetic contactor MSM is conductive. Drive the motor.

In the above-mentioned process, the siJ is inserted into the belt of the conveyor belt from the end winding part of the spindle.
The tail thread connected to d#'tt:M from the I'lL spindle moves a distance of 7>r5PL in the direction of row 111 of the conveyor belt, and then moves the spinning machine into parts υ, so (if', length Therefore, even if there is a mistake in cutting the end thread with the cutter device 6 of the spindle, the full thread will not be wound onto the empty bobbin.

[Brief explanation of the drawing]

Figure 1 is a vertical cross-sectional view of the tail thread cutting device of Kojomai, Section 2 is an enlarged view of the cutter device, and Figure 3 is a diagram showing the state in which the tail thread is cut according to the uninvented tail thread cutting method. , FIG. 9 is an electrical circuit diagram of a tail thread cutting device configured to carry out the tail thread cutting method of the present invention. 7--- +) y grail, co... spindle, 3
...Traveler, q...full tube thread, S...tail spool section,
6°゛° cutter device μ, 7...protrusion, g...blade part,
? ... Filler wound thread. IO...conveyor belt, ll...betsugu, ll...
... Desired bobbin, /J... Tail thread, MSM... Motor drive electromagnetic contactor, MSC... Conveyor drive %j, magnetic contactor, TRC... Delay timer, EB... Isodai Tomimata contact point, PC...Tomisho contact point. Applicant: Toyoda Automatic Machinery Works Co., Ltd.

Claims (1)

[Claims] In a spinning machine that doffs a #pipe yarn inserted into a spindle from the spindle by an automatic doffing machine and inserts it into a conveyor belt upper lutog, the doffing ring and the conveyor belt are first driven; A method for cutting the tail thread of a spinning machine, which comprises driving the spindle after the conveyor belt has moved a predetermined distance.