JPS6145869A - Yarn switching method for winder of spindle drive type - Google Patents

Abstract

PURPOSE:To provide a uniform yarn by increasing the spindle speed on the fully wound side, before a contact roller comes in contact with the empty bobbin. CONSTITUTION:A spindle speed increasing system 40 is provided separately from a drive control system 20 for spindles 1, 2 using a contact roller 7. After increasing the speed of spindle on the fully wound side, a tallet is rotation, when the acceleration of the spindle on fully wound side shall be altered automatically in accordance with the diameter of the package of fully wound side. Thus sure and stable replacement of yarn can be made by simple and compact configuration without any complicated structure of the device itself, as well as the quality of the innermost yarn in each package wound at the time of yarn replacement is kept unchanged, which ensure that a yarn of the same degree of uniformity as at the time of normal winding is obtained.

Description

Detailed Description of the Invention [W11 Industrial Technical Field] The present invention relates to a spindle-type turret type (revombing type) used for high-speed spinning or direct spinning and drawing of yarn, especially synthetic fiber yarn. The present invention relates to the 7j method for switching the yarn from bochin to fully wound line KQ hobbin in automatic winding V&.

[Prior art]

In recent years, from the perspective of automation and labor-saving technology reaching 11 itl, turret-type automatic @ take-up machines that automatically switch the yarn wound onto the bobbin have been increasingly adopted for synthetic delicate (h tactile spinning winding machine 81K). Now it's C.

This type of powder is 57-25466'l''!

As shown in the RAF Association Publication No. 57-49462, improvements have been made to rice and it is becoming more and more practical, but recently there has been a rise in the number of high-speed windings of <4000 to In the case of winding, the spindle drive type winding machine has been reconsidered due to its functionality, and is now being used for winding.

- The spindle drive type automatic @- take-up machine is a bobbin (
A drive source is set up to drive the spindle (spindle) by 8%, and a funtaku that makes one turn in contact with the bohin (package) ←p
-Ra and its #: 8] Detect the change Fv, and then the bobbin's jIll! The evasion is set to a constant K11, and the control of the body side source is set to K5.

In such a case, the motor rotates with the thread (bobbin) cut facing away; Therefore, until the next empty bobbin is shaken, a 1g circuit is incorporated to temporarily control the play by rotating the turret, for example, by rotating the turret. There are many.

Ko cb Yo 5 Rotate the K turret and 9 with the first roll
Bobbin @1! When switching the yarn, when the bobbin leaves the contact roller, its depth is increased and the tension is increased, and the bobbin that has run up to the predetermined distance and degree is replaced. The 1st K FI+1 circuit that came in contact with the 181-ra is made to appear as if the K1 button and control button were pressed. However, in this 7+ method, 111-fuj/'yG91
1+ k / ha H＄ll+ + = Since the city that comes into contact with - is in a free-rotating state without being actively driven, its speed is normal during this time! It decreases more than the amount of take-up, and in this state, contact) p-ra becomes positive 2.
When it comes into contact with an empty bobbin that has run up to the 1IIIi translucent limb, the speed of the 9 bobbin (sI spindle) is reduced to a sluggish rate, making it impossible to perform stable yarn switching (there was a problem in 15).

In order to solve this problem, the run-up speed of the empty bobbin in standby is increased by some percentage compared to the Natori speed, so that when the empty bobbin comes in contact with the empty bobbin, the empty bobbin will not fall below the winding Icl angle. This method is used to maintain switchability.

However, this method also has the following problems.

In other words, if the run-up speed of the idle bobbin in (]) is low, the speed of contact) P-Ra will increase to contact work and @漱, and both will be at or above the (normal) % wandering rate. . Therefore, the winding tension is normal (normal)ii! The take-up tension becomes larger than the take-up tension, and after 7, the contact roller takes up the take-up speed F[#+sub-control and the winding is normal! ! It will calm down in time. At this time, the thread quality of the innermost layer of the scattered package is different from that of other parts,
(2) On the other hand, it is necessary to suppress the winding tension to the level at the innermost layer of the package (increasing the run-up rate of empty bobbins during standby). When lowered, the contact point (contact) is not inferior to the positive winding speed, and the empty bobbin is less than the winding speed at the time when the yarn is switched from the bobbin to the empty bobbin. Since the speed is decelerated, the winding tension is significantly reduced, and the return to normal winding force is slow, impairing switching performance.

In this case, it is conceivable that the winding progress is normal when the empty bobbin comes into contact with the contact roller, but it is extremely difficult to do this successfully. As if it were practical, it would be 1 to 6.

This means that when the winding speed of the side section is increased, the higher the winding speed is, the greater the decrease in the speed of the pick-up ruler when switching the bobbin becomes. The problem is getting bigger and bigger.

To solve this problem, the near 5 method is adopted, in which the yarn is switched, the spindle on the 5WIAK side is left behind, and the turret starts rotating. In other words, the transparency of the fully wound side screwdriver is increased, and the progress of the feed roller that is making one rotation in contact with the screwdriver is increased. This increase in transparency rate is set in advance so that the speed at which the contact roller decreases from the freely rotating state uK during rotation of the turret is set in advance.

Therefore, when the turret rotates mid-way and the take-up roller comes into contact with the empty bobbin on the spindle that is being actively driven to the normal winding speed, the circumferential speed of the turret is the same. Therefore, at the time when the yarn is switched at the same time or immediately after this, both the winding roller and the spindle have reached almost the normal (normal) winding speed, and the P1 winding tension is within the appropriate range, resulting in stable and reliable yarn. The yarn quality is not adversely affected at the same time as the row switching is performed.

However, such a yarn switching method has the following problems.

In other words, the child If before switching to Itokuwa! If the diameter of the package is constant when increasing the speed of the I-in spindle, stable and smooth yarn switching will be performed as mentioned above, or will it be possible to change the thread as the back cage @ price increases? The package Iy! Since the cane changes the moment of inertia of the package, the spindle speed reached within a given period of time changes, often resulting in an uneven yarn change.

In other words, when the package diameter is larger than the S standard, the set speed increase time is not inferior to the set speed.

On the other hand, if the bag case diameter is small, the set speed will be exceeded, making it difficult to perform stable yarn switching.

If the speed of the first winding spindle is increased for a relatively long time, the set i& can be almost reached regardless of the size of the package diameter. Usually, the yarn in this part is removed after doffing.Therefore, it is preferable to keep this speed increase time as short as possible to reduce the occurrence of defective yarns (for example, if the speed increase time is set to 12 seconds) For example, if the yarn speed is 5000w/min, 1000 threads of defective yarn will be produced).

[Purpose of the invention]

The present invention was made in view of the current situation.

It is stable and 1 regardless of the diameter of the Hara cage of 11IIIi.
It is an object of the present invention to provide a yarn switching method for a spindle drive type turret percentage removal machine that allows easy bobbin switching.

[Structure of the invention]

In order to achieve these five purposes, the present invention has the following configuration.

That is, one spindle t; a spindle that is supported by a rotatable turret, is rotated by a drive motor, and has a tactile ruler that rotates in contact with a bobbin inserted in the spindle to control the drive of the spindle. In the yarn switching method of a drive-type winding machine, a spindle speed increasing system is provided that is separate from the spindle drive control system using the hand-held ruler, and the rotation of the extraction turret is started by increasing the speed of the spindle on the complete winding side. W. Yarn switching of a spindle drive type winding plate, characterized in that KIR is automatically changed depending on the package diameter of the first winding couple or the speed increase time of the spindle. Do it in a way.

Hereinafter, the present invention will be clarified based on the medical TkIK. FIG. 2 is a schematic perspective view of a spindle drive automatic winding machine incorporating the present invention.

In the figure, C, 1 and 2 are spindles (or bobbin holders) to which one bobbin (four-piece type in this example) is attached.
It is supported in the horizontal direction by the arm) 3, and is designed so that thread switching can be performed by driving and rotating it.

The spindles 1+2 are supported at an interval of 180 DEG C., and their opposite ends are connected to motors 5, 6 so that the individual spindles can be rotated by driving the motors 5, 6.

Spindle l (2) is located above spindle 1 (2).
A contact roller luff is provided that is in contact with #a and driven by #a. It divides the number of revolutions and is surrounded by a cover 8 as shown in the figure.In addition, there is a traverse guide 9 which runs parallel to the position facing the contact rough and converges the yarn. A traverse box 1O is installed in which the thread 4I' is gripped by the rubber guide 9 above the traverse skite 9 and pushed out to the rough button. A plate-shaped optical removal guide 11 for removing the yarn from the traverse guide 9 is provided.The thread is removed by operating a fluid pressure cylinder (not shown) and rotating the thread removal guide 11. There is.

In addition, the rear part of the cover 8 and the traverse box 1O is supported by a slide block 134τ that is supported so as to be movable up and down along the two vertical shafts 12.
connected, top according to mold] II1. It's like that.

14 is a turret with 30 cores':) Kibinoru 〆1 for J0 company
(21K 11 flat wires) The thread holes provided on the 11-flat wire are guides, and the holes and wires engraved on the rod-shaped holster 15 are arranged at intervals corresponding to the slits for the bobbin BK.

Further, the rod-shaped d-ruter 15 is supported by a 7-m 17 connected to a 1-ta nu cylinder (7 cutine eater) 16, and the direction of the I-let 3 is determined by the operation of the 1-ta nu cylinder 16. From the noodles, the turret 3 passes through the center of the IJ force position and reaches the lower blade 0 of the traverse box 10.
- It's designed to be like that. The stiff rotation end position is thread removal 0
The straight line connecting the fake kite 11 to the gourd is set so that the thread carrier is in contact with the operation side) l = - KIM vertically so that it does not touch the rough.

Incidentally, the ancestor kite 14 may be constructed so as to be drawable or extendable as shown in Japanese Patent No. 7-62171.

Next, the control system of the winding machine spindle according to the present invention is explained as follows.
Congratulations to you.

The control cL path 20 consists of three circuits in one large case. In other words, circumferential speed control 1) circuit 30. These are a speed increasing path 40 and a run-up circuit 50.

JI531! The control circuit 30 normally operates during winding, and a comparison circuit 31 compares the speed of the contact drawer rough, which applies a constant contact pressure to the package Kf'fi during winding, with a preset winding WR speed. If the number of rotations of the rough fp-rough is higher than the set value, the 8an of the spindle motor 5
Lower 1 set speed and Oki [ji KL, conversely, if it is low, raise Nubintle Tanabata 5 frequency to set speed.

The speed (rotational speed) of the contact drawlough is detected by a speed detection gear 21 and an electromagnetic pickup 22 attached to the contact drawlough, but it is not limited to this method.

Next, at the time of the turret, more specifically, the timer operates just before the start of the turret winding, and the speed control of the spindle l on the complete winding side is switched from the peripheral speed control circuit 30 to the transmission circuit 40. At this time, the winding diameter calculation circuit 41 calculates the winding diameter of the small package based on the output frequency of the spindle motor 5 and the number of rotations of the pickup roller.

The calculation formula is the following commute.

Dpwn-Da-p/ 120F In this process, Dp: Package diameter (關) n: Number of roller rotations (r, p, m) p Number of poles of Nisbindle Tanabata F: Inverter output frequency () It) De : Contact roller diameter (ta) In this case, test 11! The relationship between the package diameter and the speed increase rate determined by /)
2. When it comes into contact with the empty bobbin inserted, its speed is made equal to the spinning bobbin (spindle) speed.

For example, FIG. 3 shows the relationship between the package diameter and the speed increase rate in the case of a polyethylene terephthalate multifilament yarn.

The winding diameter signal of the pancage calculated by the winding diameter calculation circuit 41 is used to calculate the speed increase rate by the transmission torque conversion circuit 42, and the speed increase rate is calculated by K.
Child+! 11I! The spindle l is connected to the package on the red spindle l; increase the R-rough speed.

On the other hand, next to standby Φ, yarn switching is performed!
The force of Nipin Doi 12 is set so that the speed increases according to the set value from IK.

In other words, just before the turret, the timer shouts and the run-up circuit 5 is activated.
The run-up speed is calculated by specifying the take-up speed set value and the run-up speed increase main set value, and thereby the predetermined jlii
A single wave number command is issued to the spindle motor 6 and the speed is increased to the setting speed.

The above example describes an example in which the speed increase time is kept constant and the IW speed is varied depending on the package diameter.

It is also possible to change the speed increase time depending on the package diameter. In this case, a circuit may be used in which the speed increase rate is kept constant and the winding diameter is 6, thereby reducing the speed increase time.

Also, although these lines were made into rows 5 and 5 by incorporating an eight-domain circuit, a microcomputer can also be used, and according to Kowak, it is easy to use and
It is preferable because you can hit 11.

Next, the thread cutting vK of Ichitori will be explained.

The yarn that has been gradually melt-spun by a device (not shown) is traversed by a traverse guide 9 to form a package using a four-hung bobbin holder IK and an empty bobbin BWC@Ild. At this time, the application of one pressure and the winding speed of -+11U are performed by = contact ρ - rough. As shown in Fig. 4, the thread & Y is not fixed at Pat.
Or package) When PK is reached, dotsfing timer t:
Mll speed control circuit 30 by operating contact-rough
The speed increasing circuit 40 then switches to the speed increasing circuit 40.

As a result, the spindle 1 of c5c @ f4 increases the speed to the speed corresponding to the package pt) winding diameter, and the contact) c-- rough reaches the desired speed within the set time, and then the fixation of the turret 3 is released. He begins to rotate.

The desired speed here refers to the speed at which the contact rough is reduced due to the free (inertial) rotation state during turret rotation, which is equal to hIQl.

On the other hand, the spindle 2 on which the switching is performed is accelerated to a predetermined speed (by operation of the run-up circuit 500) when the turret 30 rotates as if it were to be switched.

K/(
The cage P moves away from the contact rough and the positions of the two spindles 1.2 change, and this time the empty bobbin B rotates in contact with the contact (+-- rough) and the yarn is switched. In this case , contact) p- rough speed decreases rapidly, but in the case of the VC of the present invention, the contact rotating in contact with ma of the 2-bin tonneau ←l (package P) of the first winding) a- Increase rough speed. The speed increase rate of this contact roller rough depends on the winding diameter of the package. In other words, 1C is preset or programmed to compensate for the speed that the contact rough is reduced due to free upward rolling wi4 during the turret rotation, and therefore the turret 3 rotates almost halfway and the contact rough is reduced. When the spindle V is actively driven to the normal S winding speed and comes into contact with the empty pobin B on #2, the circumferential speed is almost the same, and both the spin throat 2 and the spin throat are at almost normal (normal) winding speeds. p, Ichitori prefecture force is within an appropriate range, and stable and effective yarn switching is performed. Furthermore, since the innermost Ns yarn that is IK-wound also reaches the final winding tension level, the yarn quality does not burn and becomes a yarn of normal quality.

In this way, in the present invention, when the turret 3 rotates and the contact roller rough comes into contact with the empty bobbin B, the speed of the spindle 1 of the complete 111H during the contact rotation is switched in advance so that the same speed as the percentage extraction speed is achieved. First, the speed is increased to a speed corresponding to the outer diameter of the package P, and the speed of the transport is increased within a set time.

Here, the rate of speed increase of the contact roller 7 (therefore, the pohinhoru on the complete winding side) changes depending on the winding speed, the rotation speed of the turret, or the mechanical performance of the winding machine, but generally speaking, the winding When the take-up speed is 5,000 to 8,000 wx/Sol, it is preferable to set the t@ stray ratio to 1.3 to 3.8 in order to ensure even more stable and f1-containing yarn switching performance.

On the other hand, the speed of the bobbin holder 2 with the empty bobbin hook will drop to some extent due to the inertia of the contact a-rough during deceleration, so the winding speed should be slightly higher than the winding speed (about 0.2 to 0.8k). You can leave it there.

〔effect〕

As explained above, according to the present invention, yarn switching can be performed reliably and stably with a simple and simple configuration without making the device itself complicated, and at the same time, the innermost layer of the package that is wound at the time of yarn switching is The quality of the yarn is not wasted, and the same homogeneous yarn can be obtained during normal winding, which is an extremely advantageous advantage.

Hereinafter, the effects of the present invention will be explained in more detail with reference to examples. Example IR6 Figure 6 shows fs melt-spun polyethylene 7 phthalate multifilament yarn East 75 denier/24 filament spindles as shown in Figures 111-2. This shows the fluctuation pattern of the % take-up tension (curve 1iar3 and the speed (curve) of the hunter) at the time of yarn switching when winding at a winding speed of 5000 air/min using a drive-type automatic winder. It is.

This diagram is created by incorporating the relationship between the package diameter and the speed increasing rate of the complete winding spindle as shown in FIG.
This shows the result of the winding, regardless of the winding diameter.
Song 1 as shown in ml, J! Contracted with VC Tokyo.

Here, the turret ruler is before the turret rotation (kl)K
By increasing the speed of the spindle on the complete winding side, K is 1.8 immediately after the turret rotation (or when Ptr & 1) (t*)
The speed has increased to 5090 m/min. Next, when the turret starts rotating and the econtact roller leaves the package, the speed of the econtact roller decreases below the natural deceleration allowance, and the turret rotates half a turn to remove the air contact roller inserted by the spindle number. When the contact roller contacts the bobbin (t,), the speed is almost the same as the speed of the empty bobbin, which is being taken up at the winding speed by driving the spindle. In this way, since there is no contact VKK one-take continuous speed movement, the yarn is caught in the slit of the empty bobbin immediately after this, and when the yarn is switched (t4), the yarn tension decreases by 1'! Since the yarn is small and quickly recovers after that, it is unlikely that the yarn change will end in failure due to the decrease in tension, such as winding around CI-ra, etc., and it will also be caught by the traverse guide and traversed immediately after this. In this case, the yarn tension at the innermost part is wound up, but in this case too, the yarn tension remains at the normal tension level, so the quality of the yarn does not change. Switching success rate is approximately 98
%.

It is.

It should be noted that a similarly effective result can be obtained by using a speed-up time conversion circuit system instead of the speed-up rate conversion circuit to change the speed-up time in accordance with the package diameter on the completed winding side.

Comparative example! #! Example: Increase the number of spindles on the complete winding side by using a conventional spindle drive type automatic winder 1 for the spun yarn of Kouroku? The yarn was switched with a general rate of 8%.

Figure 17 shows the variation pattern of the winding tension (curve fI 1 ms) and the speed of the winding roller (curve 1 m b, ) when the diameter d of the fully wound package is 150 mm, and the % take-up tension (curve KQ as ) when the package diameter is 300 mm. and the speed of the hand controller (song #b).

In this way, as the diameter of the package increases, the moment of inertia increases within the set time (@5 seconds for medium).
The IC could not reach the desired speed, so the turret rotated approximately half a turn, and the empty bobbin inserted into the bobbin holter
fQK in contact with the contact roller is (t,) and the contact roller speed (b,) is much lower than the normal take-up speed (9 yarns are captured by the slit force of the empty bobbin, and yarn switching is performed. !l; Empty bobbin at t(t*).

Since the winding speed of both the hand control roller and the winding roller is lower than that, the winding tension gradually decreases, and it takes a long time before the winding tension returns to normal! !
! The thread switching success rate is 85 to 9 when the time (t,) is
0%, extremely poor, poor usability.

[Brief explanation of the drawing]

Fig. 1 is an explanatory circuit diagram of a spindle control system of a device suitable for implementing the present invention, Fig. 2 is a perspective view of the device shown in Fig. 1, and Fig. 3 is a diagram showing the package diameter and complete *<of the shit spindle]. Figures 4 and 5 are explanatory diagrams of the operation of the device in Figures 11 and 2. Figure 6 is a diagram showing the relationship between the winding tension and the speed increase rate, and Figures 4 and 5 are diagrams for explaining the operation of the device in Figures 11 and 2. A line diagram showing a pattern, FIG. 7, is a diagram showing a variation pattern similar to that of FIG. 6 for explaining a comparative example. 1.2...Bobbin holter, 3...Turret. 7... Funtaktorer, 20... Spindle control circuit, 30... Circumferential speed control circuit, 40... Speed increase circuit, 50
... Run-up circuit

Claims (1)

[Claims] A spindle drive type winding system in which a plurality of spindles are supported by a rotatable turret, the spindles are rotated by a drive motor, and have a contact roller that rotates in contact with a bobbin inserted in the spindles to control the drive of the spindles. In the yarn switching method of the machine, a spindle speed increasing system separate from the spindle drive control system using the contact roller is provided to increase the speed of the spindle on the complete winding side, and then when the turret starts rotating, A yarn switching method for a spindle drive type winder, characterized in that the speed increase rate or speed increase time of a complete winding side spindle is automatically changed according to the side package diameter.