JPS607728B2 - Transfer tail winding device on open-end spinning machine - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention is capable of replacing a fully wound yarn with an empty bobbin without interrupting yarn spinning while processing continuously fed spun yarn using a yarn end suction device or the like. The present invention relates to a so-called transfer tail winding forming device for winding spun yarn onto the end of a bobbin in an open-end spinning machine capable of winding the spun yarn onto the end of a bobbin.

Generally, in an open-end spinning frame, the yarn sent out from the spinning device is wound into a cheese shape.

If the rolled cheese is to be fed to a direct knitting machine or loom without being rewound, it is now required to form it into a corn cheese package to facilitate the unwinding of the threads. In order to increase the working efficiency of machines and looms, it is required to continuously supply thread as long as possible without stopping the machine. Therefore, a transfer tail winding is formed at one end outside the normal winding position so that the corn cheese thread on the knitting machine or loom can be continuously tied to the corn cheese thread newly attached next. It is necessary to do so. The transfer tail winding position should be such that the small diameter side of the cone-shaped bobbin faces in the direction of the scales of the same thread in order to facilitate the unraveling of the thread. This will be the end. However, when the spun yarn is transferred to the large section of the cone-shaped bobbin in this way, a large tension is applied to the spun yarn because the circumferential speed of this large section is faster than the zero output speed of the yarn. Therefore,
In conventional transfer tail winding devices in which the thread guide section is fixed and does not move up and down, even if the end of the thread is successfully wound around the large-diameter end of the bobbin, the thread quickly winds on its own after winding. The tension applied to the wire often causes it to break, making transfer tail winding less reliable. SUMMARY OF THE INVENTION An object of the present invention is to provide a transfer tail winding forming device for an open-end loom, which eliminates such defects and can reliably perform transfer tail winding.

An embodiment embodying the present invention will be described below with reference to the drawings. In the drawings, reference numeral 1 denotes a winding drum attached to each spindle on a rotating shaft 2 common to all spindles, as shown in FIGS. 1 and 2. It is designed to be actively rotated in the direction of the P arrow.

A cradle device consisting of a bobbin holder 3, a handle 4 of the holder 3, etc. is provided above each winding drum 1. 5 is a bobbin for winding corn cheese that is detachably supported by the bobbin holder 3, and 6 is a centering disk provided between the large flea side end (right end) of the bobbin 5 and one arm of the bobbin holder 3. Yes, bobbin 5
It can be rotated as one unit.

7 is the same centering disk 6 as shown in Figures 2 and 7.
A plurality of notches formed on the outer peripheral edge of the spun yarn S
It is designed to be hooked on and pulled backwards.

Note that the bobbin 5 is normally energized to the side that supports the winding drum, so in the current winding state, the P of the winding drum is energized.
Along with the rotation in the direction of the arrow, it is also rotated in the opposite direction of the arrow Q. Reference numeral 8 denotes a mounting shaft provided at the front lower part of the winding drum, and 9 a traverse guide for each bell fixed to the mounting shaft 8. The mounting shaft 8 is reciprocated by a traverse cam (not shown), and the paper is rolled. The thread S is twilled.

Reference numeral 10 denotes a common air sucker for all spindles, which is provided at a slightly lower position in front of the mounting shaft 8 of the traverse guide 9, and the larger diameter side end of the bobbin 5 on the yarn guide plate 11 attached to the upper surface of the air sucker 10. A transfer hole 12 for gripping the yarn end during doffing is transparently provided at a position corresponding to (right end), and a transfer tail winding device for each bell according to the present invention is installed in the immediate vicinity of the transfer hole 12 for gripping the yarn end during doffing. ing.

Note that 13 is a take-up roller, 14 is a top roller in contact with the take-up roller 13, and 15 is a support rod that supports the top roller 14 via a holder 16.

Further, 17 is a paper output unit, and 18 is a sliver can. Therefore, the sliver 19 in the sliver case 18 is taken out by the paper delivery unit 17 to become a paper delivery yarn S, which is sent upward through the space between the take-up roller 13 and the top roller 14, and is deposited on the bobbin 5. It will be done.

Next, the structure of the transfer tail winding device of the present invention will be explained with particular reference to FIGS. is a placket fixed to the upper front surface of the support plate 021, and consists of a pair of left and right support arms 23 and a connecting portion 24 having an L-shaped side surface that connects both support arms 23 at their rear ends.

A swing arm 25 is supported between both support arms 23 by a shaft 25a so as to be swingable back and forth (up and down). As shown in FIG. 3, the swing arm 25 is bent so as to protrude upward and then extend diagonally rearward and upward (toward the bobbin 5), and as shown in FIG. 0 is located further to the right. 26
As shown in FIG. 3, is a spring interposed between a part of the swing arm 25 and the lower upper surface of the connecting portion 24 of the bracket 22, and acts to always maintain the swing arm 26 in an upright state. There is.

The swing arm 25 has its lower end rear surface in contact with the lower end front surface of the connecting portion 24 of the bracket 22 in the upright state. Reference numeral 27 denotes a yarn guide with 26 screws attached to the left side of the upper end of the swing arm 25, which protrudes long toward the left side, and its tip extends slightly backward and upward as shown in Figures 6 and 6a. is bent obliquely to form a regulating portion 29.

The regulating portion 29 corresponds to the transfer tail winding position on the bobbin 5 in the left-right direction, as shown in FIG. 6, and is located below the top surface of the bobbin 5 in the vertical direction, as shown in FIG. . Reference numeral 31 denotes a mounting plate fixed to the rear surface of the upper part of the support plate 21, and is composed of a horizontal portion 32 projecting rearward from the support plate 21 and a flowering portion 33 extending upward from the rear end of the horizontal portion 32. There is.

Reference numeral 34 denotes an auxiliary plate for regulating thread that is bent upward at the left end of the horizontal portion 32 of the mounting plate 31, and is located slightly to the right of the transfer tail winding position of the bobbin 5, as shown in FIG. When forming the transfer tail winding, the portion A of the paper yarn S before five turns of the bobbin is prevented from coming off to the right from the tail winding position.

35 is a recess formed at the upper end of the vertical portion 33 of the mounting plate 31, as shown in FIG.
This cutter is used to cut the portion B of the weaving yarn S inserted into the recess 35 after it has made five turns around the bobbin during transfer tail winding.

As shown in FIG. 6, the concave portion 35 of the vertical portion 33 intersects with the green outer periphery of the centering disk 6 at the right end of the bobbin 5 in a Z oblique manner and comes into contact with it.

Next, we will explain the functions and effects of the transfer tail winding device configured as described above. Now, in order to perform transfer tail winding in the open-end spinning machine described above, first, the winding is performed on the bobbin 5 at Z during doffing. The spun yarn S that is being spun is cut at an appropriate position, and the yarn end is inserted into the suction hole 12 of the air sucker 10 and held by suction.
Next, the bobbin holder 3 is moved upward to remove the full yarn from the holder 3, and a new empty bobbin 5 is attached to the holder 3. In this case, the second,
As shown in FIG. 6, the spun yarn S, which is suction-held by the air sucker 10, is circulated from below through the rear peripheral surface and upward. After spinning the spun yarn S and attaching the empty bobbin 5 to the bobbin holder 3, this time, while lowering the bobbin holder 3, hook the portion A of the spun yarn S that has gone 5 times around the bobbin onto the yarn guide 27. In this state, the empty bobbin 5 is applied to the winding drum 1. Then, the empty bobbin 5 begins to rotate in the direction of the arrow Q together with the centering disk 6. After doing this, "Next, the portion B of the grade yarn S after 5 revolutions of the bobbin is inserted into the recess 35 of the mounting plate 31 from above.

This insertion is performed manually by an operator holding in his hand a thread guide 42 having a fork 41 formed at its tip as shown in FIG. When the spun yarn S is inserted into the recess 35 of the mounting plate 31,
Since the spun yarn S automatically contacts the green outer circumference of the centering disk 6, the portion B of the spun yarn S after 5 turns of the bobbin is hooked to one of the notches 7 of the centering disk 6 rotating in the direction of the arrow Q. It will be done. Therefore, after 5 turns of the bobbin, the part B is pulled in the direction of the bobbin 5 while holding the weave by the air sucker, and is cut by the cutter 361 in the recess 35 of the mounting plate 31, and at the same time the spun yarn S
Part A begins to be wound onto the bobbin 5 after 5 turns of the bobbin. Then, the unnecessary portion of the cut end of the woven yarn S is suctioned into the air sucker lo. The spun yarn S attached to the empty bobbin 5 is attached to the regulating part 29 of the yarn guide 27 and the mounting plate 3.
The winding position is restricted to the right end of the bobbin 5 by the auxiliary plate 34 of 1.

During this winding, the transfer tail winding position is at the large side end of the cone-shaped bobbin 5, so the amount of winding is greater than the spinning speed, and as winding progresses, the spun yarn S gradually A large amount of tension is applied to the When the tension applied to the spun yarn S increases, a downward force will be applied to the yarn guide 27 hooked with the spun yarn S, so the swing arm 25 for supporting the yarn guide 27 will rotate around the shaft 25a. It is moved downward against the elasticity of the spring 26. Therefore, the regulating portion 29 of the yarn guide 27 is moved downward as shown by the double dotted silver line in FIG. 5, and by this downward movement, the increase in tension applied to the woven yarn S is absorbed and yarn breakage is prevented. Then, due to an increase in the tension applied to the spun yarn S, the swing arm 25
When the yarn guide 27 is moved beyond a certain angle, the regulating part 29 of the yarn guide 27 is finally brought down until it becomes almost horizontal, as shown in FIG. 8b, and the spun yarn S is removed from the regulating part 29.
Therefore, if the rate of increase in the tension applied to the spun yarn S is constant, the transfer tail winding length of the spun yarn S is always constant. In this way, the length of the transfer tail winding is increased or decreased depending on the swinging speed of the swing arm 25.

That is, if the laying speed is high, the spun yarn S will come off the yarn guide 27 at an early stage, and the transfer tail winding length will be short; if the spreading speed is slow, the length will become longer. Therefore, by changing the spring 26 for raising the swing arm 25 to one with a different tension, it is possible to arbitrarily change the swinging speed of the swing arm 25 and freely control the winding length of the transfer tail. Also, since the tension applied to the spun yarn S changes depending on its count or winding tension, the strength of the spring 26 for raising the swing arm 25 can be freely adjusted, or the spring 26 can be adjusted as described above. By making it replaceable, the transfer tail winding length of the spun yarn S can always be kept constant regardless of the difference in count or winding tension. That is, if the spun yarn S has a count of 4.0 or the winding tension is large, the strength of the spring 26 should be increased, and in the opposite case, the spring 26 should be weakened. In addition, as a means for adjusting the strength of the spring 26, as shown in FIGS. 9a and 9b, the swing arm 2
5. An adjustment screw 51 is screwed into the connection part 24 of the support bracket 22 from below so that the position can be adjusted in the vertical direction, and a recess 53 is provided on the upper surface of the adjustment screw 51 at the upper end of the adjustment screw 51.
In addition, it is conceivable that the lower rear end of the spring 26 is engaged in an engaging member 52 that is rotatably provided with the adjustment screw 51.

In this way, when the adjustment screw 51 is screwed in deeply, the spring 26 becomes stronger, and when it is unscrewed, it becomes weaker. After the transfer tail winding is completed, the spun yarn S is wound onto the bobbin 5 while being traversed by a traverse guide 9.

As detailed above, the present invention provides a yarn guide which is provided corresponding to the transfer tail winding position of the bobbin in order to form transfer tail winding, and which hooks and supports the portion of the spun yarn before it goes around the bobbin. The yarn guide is installed at the lower front of the bobbin so that it can swing vertically and is always in an upward and vertical position. By providing a regulating part so that the thread comes off automatically,
It is possible to reliably prevent yarn breakage when forming transfer tail winding of spun yarn, and to keep the tail winding length constant at all times.Furthermore, after the tail winding is completed, the woven yarn is automatically removed from the yarn guide. It is an excellent invention for industrial use as a transfer tail winding forming device in an open-end spinning machine because it has the effect of being able to be removed.

[Brief explanation of the drawing]

FIG. 1 is a partial schematic perspective view of an open-end ribbing machine embodying the present invention, FIG. 2 is an enlarged perspective view of the main part thereof, and FIG. 3 is a side view of only the transfer tail winding device of the present invention. FIG. 4 is a plan view, FIG. 5 is a schematic side view showing the vertical positional relationship between the bobbin and yarn guide during transfer tail winding, and FIG. 6 is a schematic side view showing the horizontal positional relationship between the bobbin and the transfer tail winding device. Schematic plan view, Figure 7 is a side view of the centering disc, Figure 8a
9 is a side view showing the position of the regulating part of the yarn guide when guiding the spun yarn, b is a side view showing the position of the regulating part of the yarn guide when guiding the twill yarn, FIG.
b is a partial sectional view and a plan view showing an embodiment in which the tension of the spring for supporting the swing arm can be adjusted;
The figure is a perspective view of the thread guide. Bobbin...5, Yarn guide...27, Regulation part...29, Grade yarn...S, Part of the spun yarn before going around the bobbin...A. Figure 1 Figure 3 Figure 4 Figure 2 Figure 5 Figure 6 Figure 7 Figure 8 Figure 9 Figure 10

Claims (1)

[Scope of Claims] 1. A yarn guide provided corresponding to the transfer tail winding position of the bobbin in order to form transfer tail winding and for hooking and supporting a portion of the spun yarn before it goes around the bobbin, is attached to the bobbin. The yarn guide is provided at the lower front of the yarn guide so as to be able to swing vertically and always be in the upward position. A transfer tail winding device for an open-end spinning machine, characterized in that a regulating section is provided so that the yarn is automatically removed. 2. A transfer tail winding device for an open-end spinning frame according to claim 1, wherein the yarn guide is fixed to a swing arm that is swingable up and down.