JPS6382283A - Bobbin winding control method for bobbin winder complete - Google Patents

Abstract

PURPOSE:To maintain a thread quantity of bobbin winding accurately, by adjusting the operation starting time of a lower shift guide each time thread guard operation takes place, and controlling the reset starting point in time of an upper shift guide and the time-up point in time of a timer where requisite bobbin winding time is set so as to accord with each other all the time. CONSTITUTION:Bobbin winding is formed in an edge of an empty bobbin in time t1 ranging from a travel finishing point P6 of a lower shift guide 5 to a reset starting point P5. Therefore, if a time-up point P8 of a time accords with a reset starting point of an upper shift guide 12, the set time t1 of the time and a thread quantity of the bobbin wind accurately correspond to each other as in 1:1. And, if operating time TB of the last lower shift guide regardable as equivalent to the operating time TB of the lower shift guide 5 in this time is known, operation starting time TC (namely, an operation starting point P17 (in this time of the lower shift guide 5 can be found by inverse operation. Therefore, a time-up point P18 and a reset starting point P15 of the upper shift guide 12 are made accordable with each other.

Description

Detailed Description of the Invention [Industrial Application Field] The present invention relates to a turret-type yarn winding device that alternately winds continuously spun yarn onto a bobbin inserted into two spindles. The present invention relates to a method for controlling thread winding in a thread winding device for controlling the number of thread temporarily wound on a bobbin at the time of switching.

[Prior Art] In the above-mentioned turret-type yarn winding device, when the bobbin of the spindle on the winding side reaches ia'', the spindle position is mutually switched, and the position of the spindle is switched between the bobbins on the empty bobbin newly located on the winding side. At the same time, the fully wound bobbin located on the standby side is replaced with a new empty bobbin.

During normal winding operation, the thread is wound onto the bobbin while being traversed left and right by the traverse device, but when the spindle position is switched, the thread is removed from the traverse device by a predetermined device and placed on the empty bobbin. The yarn is carried to a slit position formed in and engaged with the slit, thereby threading from a fully wound bobbin to an empty bobbin.

This is shown in Figures 4 and 5, which show the turret type yarn winding device.
This will be explained in detail based on the figures.

1 is a turret that rotates intermittently by 180 degrees around an axis 2; 3a and 3b are two wooden spindles rotatably supported on the turret 1; each spindle 3a, 3b;
is a hollow cylindrical bobbin Ba.

Bb are inserted respectively. Reference numeral 4 denotes a lower shift guide device which rotates by 180 degrees as the center axis of the turret 1, and has a lower shifter guide 5 that moves along the device 4 and a thread bending guide 6 that is fixed to the device 4. 7 is turret 1
The box 7 has a friction roller 8 that rotates in contact with the bobbin 3a on the stripping side a, and a traverse guide 9 that traverses the yarn Y to be wound on the bobbin 3a from side to side. is established,
Further, a thread removing guide 11 removes the thread Y from the traverse guide 9, an upper shifter guide 12 moves the thread Y removed by the thread removing guide 11, and a thread gripper grips the thread Y between the upper shifter guide 12. Guides 13 are provided respectively. The friction roller 8 is formed with a large diameter portion 8-1 that contacts both ends of the empty bobbin Ba, and the traverse operation of the thread by the traverse guide 9 is carried out by the large diameter portion 8-1.
1 within an interval of 1. The figure shows that after the turret 1 has rotated 180 degrees in the direction of the arrow because the package P of the bobbin Bb on the winding side a has become fully wound, the package P is threaded onto the empty bobbin Ba. 14 is a slit formed at the end of each bobbin 3a, 3b.

To explain the operation of thread hooking in the above-described unwinding device, first, when a timer (not shown) or the like detects that the package P on the winding side is full, the turret 1 is moved by a motor (not shown) to 180 The fully wound bobbin Bb, which was on the winding side a, is switched to the standby side, and the empty bobbin 3a, which was on the standby side, is switched to the winding side a. When 10 rotations of the turret are detected by a sensor such as a limit switch, the valve SV1 of the fluid cylinder ASI shown in FIG.
rotates from the 1 point ft 1 line position in FIG. 4 to the solid line position. As shown in FIG. 5, the thread removal guide 11 has a rond part with a length exceeding the traverse range of the thread Y by the traverse guide 9, and is rotatably supported by the slide box 7 at both ends of the rond part. It rotates by the operation of the cylinder AS1 and serves to push out the yarn Y from the traverse guide 9 at the rond portion. slide box 7
is equipped with a proximity switch or limit switch LSI that detects the operation of the thread removal guide 11, and the switch LSI turns on when the thread removal guide 11 has turned to the maximum angle, and operates the upper shifter guide 12. Turn on the solenoid valve SV2 of the fluid cylinder AS2.

As a result, the upper shifter guide 12 moves horizontally as shown by the arrow in FIG. 5, and moves the thread Y on the thread removal guide 11 to the thread gripping rod 13 position. The slide box 7 is provided with a proximity switch or limit switch LS2 that detects the presence of the upper shifter guide 12 when it moves to the terminal position, and the switch LS2 is turned ON.
The solenoid valve SV3 of the fluid cylinder AS3, which operates the lower shift guide 5, is turned on by the method described below before or after, and the lower shift guide 5 moves to the empty bobbin 3.
It engages with the thread Y leading from a to the package P and moves to the position indicated by the arrow. At this time, the thread Y between the lower shifter guide 5 and the package P is bent by the thread bending guide 6 and positioned at the end of the package P, and the thread Y between the lower shifter guide 5 and the package P is bent by the thread bending guide 6 and positioned at the end of the package P.
The 12 threads Y are positioned above the slit 14 of the empty bobbin 3a and engaged with the slit 14. As a result, the empty bobbin Ba
The yarn Y is cut between the package P and the package P, and the yarn Y spun from above is wound around the slit 14. This rod winding of the yarn Y onto the slit 14 is hereinafter referred to as punch winding. This punch winding is performed for a predetermined period of time by a method described later, but before the punch winding starts, the solenoid valve SV1 of the thread removal guide 11 is turned OFF, and the guide 11 returns to its original position shown by the dashed line. . When the time for punch winding has elapsed, the valves SV2 and SV3 are turned OFF, so that the shifter guides 5 and 12 also turn off the fifth shifter guide.
The thread Y returns to its original position on the right side of the figure, and due to tension, the thread Y naturally engages with the traverse guide and is traversed from side to side.
Normal winding on the central portion of the empty bobbin 3a is resumed. Thereafter, at an appropriate time, the full package P is removed from the spindle 3b and a new empty bobbin is inserted in its place, and then the lower shifter guide l [4 is moved downwardly on the turret 1 by 18
The entire process of doffing and threading in the water line winding device is completed by the 0 degree rotation.

FIG. 7 shows a time chart of the operation of each valve and cylinder that appears in the above explanation. That is, as described above, at the time point P1 when the turret 1 almost completes its rotation, the first solenoid valve SVI is turned ON, thereby causing the first cylinder AS1 to operate with some time delay. As a result, the thread removal guide 114 turns to the left in FIG. 5, and the first switch LSI is turned on at time P2.
let At the same time as the switch LSI is turned on, the second solenoid valve SV2 is turned on, which causes the second cylinder AS2 to operate with a time delay, and the upper shifter guide 12 moves to the left in FIG. Second at end point P3
Turn on the switch LS2. O of the switch LS2
At the same time, the first valve S1 is turned off by N, the thread removal guide 11 is rotated back to its original position, and the third solenoid valve SV3 is turned on, thereby causing the third cylinder ΔS3 to release the time delay. The lower shifter guide 5 moves to the left in FIG. 5 and reaches the end point P of the movement.
6, the third switch LS3 is turned on. The switch L
When S3 turns ON, timer TM1 starts counting time. This timer TMI is set in advance to time up at time t1, and the time point P when the time t1 times up is set in advance.
4, the second valve SV2 is turned off at the same time, and as a result, the upper shifter guide 12 starts returning to its original position from time P5 after a time difference t2 due to a delay. Also,
At the same time, the third pulse portion SV3 is also turned off, whereby the lower shifter guide 5 starts returning to its original position with a delay. In this way, the operation of each valve and cylinder is performed by sequence control that employs a confirmation method in which SV2 is turned on at point 22 and SV3 is turned on at point P3.

In the process of the above-mentioned thread hooking operation, the stick winding phenomenon of the thread Y occurs in the following three parts. One is the above-mentioned punch winding, which is formed after the yarn Y engages with the slit 14 of the empty bobbin 3a and before it is released from the ball shifter guide 12. As shown in FIG. 7, the time period during this period is after the point P6 when the proximity switch or limit switch LS3 that detects the completion of movement of the lower shifter guide 5 is turned on, and after the upper shifter guide 1
It is equal to the time (2) until P5 when the switch LS2, which detects that the guide 12 is in the moving state, is turned off due to the return of the guide 12. The second bar winding is performed after the upper shifter guide 12 reaches the position shown in FIG. 5 and until the ball shifter guide 5 reaches the left position shown in the same figure, that is, in FIG. 7, the switch LS2 is turned ON. Switch LS3 is turned on from point P3.
It is formed at the end of the package P during the period (3) up to the time point P6. The three bar windings are carried out after the thread Y is removed from the traverse guide 1'1 until the thread Y is engaged with the horizontally moving upper shifter guide 12, that is, as shown in FIG. Upper shifter guide 1 from P2 when LSI turns on
2 is formed at the center of the package P at 3 until time point P23 when it reaches half of the moving distance. If the amount of yarn in the above-mentioned first stick winding, that is, punch winding, is small, the end of the yarn may come off the slit, and if the amount of yarn is excessive, the punch-wound yarn will be affected by the pressure of the 7 retraction rollers. This causes problems such as making it difficult to remove bunches during winding. In the second bar winding, the thread Y is on the thread layer surface guide 6.
It is formed in a part of the package P by engaging with the bar winding, and if the amount of thread in this bar winding is large, it becomes difficult to pull out the thread from the package P. It is called gi. If the amount of thread in the third stick winding is large,
Above) It causes the same problem as the rounded shoulders, and hereafter this stick roll will be referred to as the center roll. As described above, during the thread hooking operation, the traverse of the thread is temporarily stopped, which causes a situation in which the thread is wound around a specific position on the bobbin. This bar winding of yarn is sometimes necessary, but often undesirable, and it is better not to have the center winding and the first wind, but when it comes to punch winding, it is important to appropriately set the amount of thread to be wound on the bar. It becomes the mold mouth. In order to control the amount of yarn to be punch-wound, it is necessary to strictly set the operation of devices such as guides that move the yarn for threading, but the faster the winding speed of the yarn by the winding device is, the more It becomes difficult to set the above-mentioned operation, and even a slight delay in operation causes a large fluctuation in the amount of yarn.

Since it is mechanically impossible to completely eliminate this operation delay, conventionally, when setting the time for punch winding, the return operation delay of the upper shifter guide 12 is taken into account in advance, and the time is set. I was trying to set it.

That is, in order to obtain the time required to punch 1 q of yarn with a preferable amount of yarn, that is, the necessary stick winding time T1, the second valve SV is
2 is 0FFL, and the predicted operation delay time from when the upper shifter guide 12 turns OFF the switch LS2 due to its return to the time point P5 is assumed to be T2.
2-tl: In other words, the time from when the switch LS3 goes ON to when the valves SV2 and SV3 are simultaneously turned OFF is determined, and this time t1 is set in the timer TMI as the time corresponding to the required winding time T1. .

On the other hand, the amount of yarn wound in the center and layered is not controlled at all, and the second valve S is used for center winding.
The operation is left to the delay of the upper shifter guide 12 activated by turning on V2, and for layer winding, the third valve SV3
The operation was left to the delay of the lower shifter guide 5, which is activated when the switch is turned on. With center winding, there is no problem because the amount of thread is relatively small, but there is no problem.
When it comes to shoulders, the amount of thread becomes too large to ignore because the operation delay time of the lower shifter guide is all involved.
cause various troubles.

[Problems to be Solved by the Invention] The delay in the operation of the guides, etc. described above changes due to fatigue of the device that operates the guides over time, etc. Therefore, in the conventional method using the confirmation type sequence control described above, it is difficult to control the amount of yarn. Management will be extremely inadequate. The disadvantage of this conventional method is that in punch winding, the required stick winding time T1 includes an unstable operation delay time T2. The greater the discrepancy with the operation delay time, the greater the influence will be, and the desired amount of yarn will not be obtained, and the punch-wound portion that is wound too much or too little will cause various troubles. The present invention aims to solve such problems.

That is, an object of the present invention is to eliminate the confirmation control and introduce advance control based on anticipation, thereby solving the above-mentioned conventional problems and making it possible to obtain the desired and accurate bar winding amount. An object of the present invention is to provide a rod winding control method for a thread winding device.

[Means for Solving the Problems] The bar winding control method of the thread winding device of the present invention will be explained below using FIGS. 1 to 5 corresponding to the embodiment.

Two spindles 3a with bobbins Ba and 3b attached
, 3b are alternately switched between the winding side a and the standby side, and the bobbins 3a, 3 are moved by the upper shifter guide 12 and the lower shifter guide 5, which move when the spindles 3a, 3b are switched.
In a turret-type yarn picking device that temporarily changes the yarn winding position on b, a predetermined required bar winding time t
1 is set and starts from the end point P6 of the lower shifter guide 5's movement a, and times up after the set time t1.
The required time T^ until the return start point P5 of the upper shifter guide 12 after a time equal to the length of 1 has elapsed, and the operation start time Ts of the lower shifter guide 5 before this time, that is, the third valve SV
3 turns ON from P7゜P2O to lower shifter guide 5
The point in time when P6. From the time up to P60, determine the current operation start time Tc of the lower shifter guide 5 (the time from the current position P10 until valve SV3 is turned ON), and determine the return start time p1 of the upper shifter guide 12.
5 is made to coincide with the time-up point P18 of the timer TMI.

[Function] In the turret-type yarn winding device, the bar winding for which it is necessary to appropriately set the amount of yarn is carried out during the period from the end point PB of the lower shifter guide 5 to the return start point P5 of the upper shifter guide 12. It is formed at the end of the bobbin (3a). Therefore, if this time itself can be set arbitrarily, the thread spool of the bar winding can be accurately set. In other words, the predetermined required bar winding interval t1 can be set arbitrarily. The set time tli starts from the end point P6 of the movement of the lower shifter guide 5.
When using a timer TM1 that times up to l, if the time-up point P8 of this timer TMI coincides with the return start point P5 of the upper shifter guide 12, the timer TM+
The setting time t1 and the actual amount of yarn for bar winding correspond exactly on a one-to-one basis.

By the way, the time required this time T^ should be almost the same as the time required last time T^.

Therefore, the current required time T^ is the previous required time T
It can be considered to be equal to ^.

On the other hand, the time required this time T^ is T^-TO+TI It can be expressed as

Therefore, if we know the previous operating time T, e of the lower shifter guide 5, which can be considered to be equivalent to the operating time T8 of the lower shifter guide 5 this time, we can calculate the current operating start time TO of the lower shifter guide 5 by back calculation. be able to. In other words, by such backward calculation, the current operation start time T1 of the lower shifter guide 5 is determined, in other words, the operation time 11 o'clock 17 is determined, which means that the previous operation time T8 of the lower shifter guide 5 has changed more than before. Even if this happens, the operation start time Tc that determines the operation start time P17 of the lower shifter guide 5 is adjusted to absorb the change.
The time-up point P1g of the timer TM1 is determined to match the general switching time TS, and thereby the time-up point P18 of the timer TM1 and the return start point p15 of the upper shifter guide 12 coincide.

Note that in order to know the operating time T8 of the lower shifter guide 5 before this time, it may be obtained from the actual operation during the previous switching operation, but the lower shifter guide 5 is not used during the switching operation performed after the switching operation. Moreover, even if used, the yarn YIfi is not guided to this point, so it does not interfere with the winding, so the lower shifter guide may be operated idly during this winding.

[Example] The following is an explanation of an example of the invention made by Mokuhata, based on FIGS. 1 to 5.

FIG. 3 shows an example of a control system for carrying out the bar winding control method of an unwinding device of the present invention. In the diagram, parts having the same functions as those of the conventional example shown in FIG. 6 are given the same reference numerals. Therefore, detailed explanation thereof will be omitted.

The difference from FIG. 6 is that the control 11 device 20 is provided with three timers TM whose time can be arbitrarily set from the outside, and two up/down counters CT with exactly the same functions.

The timer T M 1 is used to set a predetermined required punch winding time t1 to reduce the required amount of bunch winding yarn by 1, and as shown in FIG. The third valve SV3 of the lower shifter guide 5 has a function of starting from t1i9 and turning off the third valve SV3 of the lower shifter guide 5. In the same manner, the movements of the fluid cylinder As and each guide will be assumed to be the same for convenience.

The timer 1-M2 is for setting the operating time of the upper shifter guide 12, and starts from the shift f) + end point P3 of the upper shifter guide 12, and when the time is up after the set time t2, the second valve SV2 is turned off. It has the function of When the second valve SV2 is turned OFF, the upper shifter guide 12 starts returning from the return start point P5 later than this, so the set time [2 of the timer T~12 effectively takes the operating time of the upper shifter guide 12. P3-P
5 is determined.

The timer TM3 is used to set the operation start timing of the thread removal guide 11, and has a function of starting from the revo start PO, timing up to the set time t3tl, and turning on the first valve SV1. The start timing of this operation can also be determined by detecting the end of the 180 degree rotation of the turret (FIG. 4 (1)) or by a sensor such as a Mitsumiru switch.

However, this method requires a sensor and has the disadvantage that the timing cannot be easily changed, so a simple timer was used.

The up/down counters CTi and CT2 are set at the start point p7 of the lower shifter guide 5 every time the spindle is switched. p17・
It is used to determine the required time T^,
Since the timing determined by the operation start time Tc of the lower shifter guide 5 is performed in a temporal manner, two guides are used and their roles are alternately changed. Counting is performed by counting the scan clock tc.

Now, regarding the effects of the above-mentioned configuration, the first
This will be explained with reference to FIG.

In the figure, the up/down counter CT1 is used to determine the current activation start time Tc of the lower shifter guide 5, and the up/down counter CT2 is used to determine the previous activation time Tc.

The operation timings of the thread removal guide 11 and the upper shifter guide 12 are basically the same as in FIG. 7, and in this respect, there is no change in the middle thread layer. The difference is that
The ON point P1 of the first valve SVI is determined by the timer TM3, and the OFF point P4 of the second valve SV2 is determined not by the punch winding timer TM1 but by the newly provided upper shifter guide timer TM2. It is a point. In addition, the timing control of the lower shifter guide 5,
In particular, the ON timing P7 of the third valve SV3 is not a confirmation type that is determined after waiting for the end of the movement of the upper shifter guide 12, but as a result, it is determined in advance without considering the end of the movement of the upper shifter guide 12. Anticipatory control is performed. And, what is especially noteworthy is this Revostart P10
The point is that the lower shifter guide 5 is idle-operated once immediately before, that is, during winding after the previous switching is completed. As mentioned above, this dry run has no effect on winding at all, and its purpose is to reduce the latest operating time TB of the lower shifter guide, which is a variable factor like the required time TA. .

First, the up/down counter CT1 does not start counting up immediately from the previous revolution start point PO, but waits for the same time as the set time t1 of timer TM1 to start counting up, and then starts counting up until the upper shifter guide At time point P5 when 12 starts returning, the count is stopped upon receiving a signal from the limit switch LS2 which turns off.

At this time, the count number of the up/down counter CT1 is not a value corresponding to the switching time TS, but a value corresponding to the time obtained by subtracting the set time t1 (-constant value) of the timer TMI from the switching time Ts, that is, the count corresponding to the required time T^. The number is N^. In other words, since counting is performed after waiting for the set time t1 to elapse, the steps Ts to tl, which are originally to be performed later, are counted.
This saves the trouble of counting down. Here, the number of counts N^ corresponding to the previous required time TA was calculated because the required time T^ has a variable element, and when switching this time, the latest data from the previous time was used to calculate the actual situation. This is because they are trying to match.

Next, the third switch is turned ON for idle operation of the lower shifter guide 5.
From the time point P70 when the signal from the valve SV3 is received, the up/down counter CTI starts counting down in reverse, and the lower shifter guide 5 ends its movement at the time point P6.
The count is stopped upon receiving a signal from the limit switch LS3 which is turned on at 0. At this time, the count number of the up/down counter CTI becomes a count @N8 corresponding to the time T^-TB obtained by subtracting the operating time Ta of the lower shifter guide 5 from the required time TA. That is, the counting shift is one shift corresponding to the current operation start time 1-c of the lower shifter guide 5. Here, before this REVOSTARTRO 10, the lower shifter guide 5 was operated idly, and the operating time was T.
The reason for finding 8 is as follows. Last switching time T
The operating time T8 can also be obtained from the actual operation of the lower shifter guide 5 carried out within c. counter C
It cannot be determined by T1. Therefore, during actual operation,
A separate counter is required to determine the operating time T8 of the lower shifter guide 5. Moreover, the count corresponding to the operating time T8 obtained by this separate counter (direct) must be subtracted from the count (direct) of the up-down counter CTI, and a subtracter is additionally required for the operation stop. Moreover, the calculation process must be interrupted during the sequence.On the other hand, if the operation time TI is calculated from idle operation, the up/down counter C is not activated during idle operation.
This is because T1 is not counting, and there is an advantage that T^-Tc can be automatically calculated by simply counting down without individually performing subtraction processing during the operation time Ts.

Then, the up/down counter CT1 starts counting down again from the current REVO START P10.

Up/down counter CT1 is lower shifter guide 5 this time.
Since the countdown starts from the count aNe, which corresponds to the operation start time TO, the count becomes zero after the operation start time TO has passed from the current REVO start P10. 5! Since this is the point that should be the start point of IJ rjn, at this time a signal is output from the control 21I device 2o to turn on the third valve SV3 of the lower shifter guide 5.Up-down counter is activated every time the spindle is switched. CT1.0T2
The above counting is performed by switching alternately.

Thus, the current return start point P of the upper shifter guide 12
15 is predicted by suppressing the previous required time TA, and the current operation start time TC of the lower shifter guide 5 is determined as described above based on the above required time T^, and the lower shifter following Tc is predicted. The operation time TIl of the guide 5 is predicted by the previous idle operation, and Ti
Since <ti is constant, timer Tll time-up point P18 and upper shifter guide 12 return start point P18
15 will match. As a result, the punch winding time does not change for each doffing and is always equal to the set time t1 of the timer TM1.

As described above, in this embodiment, in particular, the measurement of the required time is started for the first time after a length equal to the required punch winding time has elapsed from the previous REVO start, and the switching sliding sliding shift is set so as not to overlap with the measurement of this required time. By configuring the guide to run idly and measure its operating time, the lower chic can self-determine the idle start time by simply counting up and down using an up-down counter. Therefore, the controllability of the punch winding amount becomes extremely easy.

In addition, since the operation start time Tc of the lower shifter guide is determined without considering the end of the movement of the upper shifter guide, the Ishinomaki time determined between the end of movement P13 of the upper shifter guide and the end time P2O of the lower shifter guide can be shortened. It becomes possible.

In the above example, the lower shifter guide is run idly after switching in order to measure the previous operating time of the lower shifter guide, but the operating time of the lower shifter guide is measured from the actual operation during the previous switching time. In that case, as described above, the measurement of the required time overlaps with the measurement, so a third counter is required, and later the two-hand 1il counter is used.
i\tiL (a device is required to calculate the difference between the lI values.

In addition, although the required time T^ is directly counted by the up/down counter, by first counting the switching time Ts, and then counting down for a time equal to the required bunch winding time in an arbitrary period without any hindrance, It is also possible to substantially count the required time T^.

[Effects of the Invention] In summary, according to the present invention, each time the thread (1) threading operation accompanying the rotation of the cret is performed, the operation start time of the lower shifter guide is adjusted and the upper shifter guide starts returning. By configuring the control so that the time point and the time-up point of the timer set to the required stick winding time always match, the required stick winding time set in the timer and the actual stick winding time can be completely matched. Therefore, changes in the operation of the unwinding device over time can be absorbed, and stick winding with an accurate yarn length can be maintained at all times, and troubles caused by excessive or insufficient stick winding can be avoided.

[Brief explanation of the drawing]

Fig. 1 is a time chart showing the operation of each valve and cylinder according to the bar winding control method of an unwinding device according to an embodiment of the present invention, and Fig. 2 is an up-down counter corresponding to the time axis of Fig. 1. FIG. 3 is a block diagram of an example of a control system that executes the operations shown in FIGS. 1 and 2. FIGS. 4 and 5 show common differences between the method of the present invention and the conventional method. Front view and side view of the winding device, No. 6
The figure is a block diagram showing a conventional control system, and FIG. 7 is a time chart showing the operation of each conventional valve and cylinder. In the figure, 1 is a turret, 3a and 3b are spindles, 5 is a lower shifter guide, 12 is an upper shifter guide, a is a winding side,
b is the standby side, Ba and Bb are the bobbins, TMl is a timer in which a predetermined required bar winding time t1 is set, PO is the previous revo start as the switching start point before this time, p6,
p113 is the end of movement of the lower shifter guide, P5, P
I3 is the return start time of the upper shifter guide, Plo is the current revolution start, TA is the required time, TI is the operation time of the lower shifter guide, and TO is the operation start time of the lower shifter guide. Patent Applicant Murata Machinery Co., Ltd. Representative Patent Attorney Nobuo Kinuya Figure 6 Figure 1: Rishi Soto Figure 4 Figure 5

Claims (2)

[Claims] (1) The two spindles with bobbins inserted are alternately switched between the winding side and the standby side, and the upper and lower shifter guides that move when switching spindles temporarily adjust the thread winding position on the bobbin. In a turret-type yarn winding device that performs a changeover operation, a predetermined required stick winding time is set, and a timer that starts from the end of the movement of the lower shifter guide and times up after the above set time is used to change the previous switching. The current operation start time of the lower shifter guide is determined based on the time required from the start point to the time when the upper shifter guide starts returning after a time equal to the time set on the timer above has elapsed, and the lower shifter guide operation time before this time. ,
A method for controlling bar winding of a thread winding device, characterized in that the time point at which the upper shifter guide starts returning is made to coincide with the time point at which the timer times out. (2) Claim 1, characterized in that the operation time of the lower shifter guide before this time is determined by running the lower shifter guide idly during winding performed after the end of the previous switching. Control method described.