JPH0818753B2 - Traverse control method and traverse device - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a traverse control method and a traverse apparatus, and more particularly to a traverse control method and a traverse control apparatus for preventing the occurrence of ribbon winding during winding of a yarn and improving the winding appearance of a package.

[0002]

2. Description of the Related Art Generally, in the process of forming a winding package on a bobbin holder at high speed, winding is performed with a constant winding angle of the yarn. In this case, bobbin holder rotation speed / traverse speed (hereinafter referred to as wind ratio)
Is an integer, the yarns forming the multiple turn layers of the package directly overlap with each other, and the yarns tend to slip laterally, causing ribbon winding, resulting in winding density and mass distribution. Occurs, which causes a problem that the loosening property (yarn feeding property) is deteriorated and the yarn is damaged by vibration during winding.

In order to solve such a problem, for example, the following
As in the conventional methods (a) to (c), a method has been developed in which the winding ratio is appropriately changed to prevent the ribbon winding from occurring during winding. (A) Those described in JP-A-59-43773 include
When the wind ratio approaches an integer, the traverse frequency is rapidly switched from the lower limit to the upper limit, and then from the upper limit to the lower limit.

(A) In the method disclosed in Japanese Patent Publication No. 57-33264, the winding ratio is gradually increased so that the winding ratio becomes smaller than the winding ratio before the switching by rapidly increasing the number of traverses at every predetermined time during winding. The number of traverses is controlled so that the winding ratio is constant for each stage of winding. (C) According to the method described in Japanese Patent Publication No. 45-41060, the winding is performed at the lower limit of the number of traverses, and when the wind ratio approaches an integer, the number of traverses is rapidly increased, and when the winding ratio rises, ribbon winding occurs. Not traverses according to the wind ratio.

[0005]

However, in any of the above-mentioned conventional traverse control methods, the package end surface is likely to bulge due to the shrinkage of the yarn occurring during winding,
There was a drawback that the yarn fell from the end face of the package and the looseness was deteriorated. That is, in the conventional traverse control method, the number of traverses per predetermined time is changed so as to change the traverse angle between the upper limit and the lower limit under predetermined conditions, and the ribbon winding is prevented from occurring. It was not possible to reliably prevent the occurrence of defects. for that reason,
In particular, when it is attempted to cope with higher speeds and larger package diameters, it has been difficult to improve the quality including the winding shape of the yarn package and the looseness of the yarn.

Therefore, the present invention sets a lower limit value and an upper limit value of the traverse angle, rapidly increases the number of traverses at the time of shifting from the lower limit value of the traverse angle to the upper limit value, and from the upper limit value to the lower limit value. By gradually reducing the number of traverses during the transition of, it is possible to cope with higher speeds and larger package diameters, and reliably prevent the occurrence of ribbon winding.
By changing at least the lower limit value of the winding angle appropriately according to the winding thickness of the package, the problem that the tightening of the winding and the bulge of the package end (bulge) are likely to occur due to the change of the winding angle is solved, and the speed is increased. To realize a traverse control method capable of improving the quality and releasing property of a yarn package even when the package diameter is increased, and to provide an excellent traverse device capable of implementing the method. With the goal.

[0007]

In order to achieve the above object, the invention according to claim 1 defines a lower limit value and an upper limit value of the winding angle during winding, and increases the package diameter when winding the package. When the traverse angle reaches a value corresponding to the lower limit value of the traverse angle while the traverse angle is sequentially changed between the lower limit value and the upper limit value, the traverse angle is switched from the lower limit value to the upper limit value. As described above, the traverse number is rapidly increased, and after the traverse number reaches a value corresponding to the upper limit value of the traverse angle, the traverse angle gradually increases from the upper limit value to the lower limit value, so that the package diameter increases. On the other hand, it is a yarn traverse control method in which the number of traverses is reduced, and the lower limit value of the winding angle at the time of winding the intermediate layer portion in which the package diameter is within a predetermined range is set to the outer layer portion after that. Aya at the time of taking Is larger than the lower limit value of the intermediate layer portion so as to suppress the bulging of the package end surface in the intermediate layer portion. The lower limit value can be made larger than the lower limit value of the winding angle at the time of winding the inner layer portion from the start of winding the package to the winding of the intermediate layer portion.

That is, in the traverse control method according to the present invention, the winding region in which the bulge is likely to occur on the package end face is used as the intermediate layer portion, and the lower limit of the winding angle at that time is set to the other portion (the bulge of the bulge). By making it larger than the lower limit value of the winding angle of the portion (which is unlikely to occur), the bulge of the package end face is suppressed. Further, as shown in the basic conceptual diagram of FIG. 1, the traverse device according to the invention of claim 3 has a lower limit value of the traverse angle, a traverse stroke, and a traverse stroke corresponding to the start of winding and a predetermined package diameter. Setting means a for setting the wind ratio to be avoided, holder rotation speed detecting means b for detecting the rotation speed of the bobbin holder with the package installed per predetermined time, and the winding angle from the lower limit to the upper limit based on the setting information of the setting means a. Switching speed calculation for calculating the increase width of the number of traverses for switching to a value and the descending slope for decreasing the number of traverses with an increase in the package diameter so that the traverse angle is gradually decreased from the upper limit value to the lower limit value. Means c and holder rotation speed detection means b
When the number of traverses reaches a value corresponding to the lower limit value of the traverse angle, the traverse number is increased so that the traverse angle switches from the lower limit value to the upper limit value based on the detected value and the calculation result of the switching speed calculation means c. Rapidly increase by the width,
After the traverse number reaches a value corresponding to the upper limit value of the traverse angle, traverse number calculation means d for decreasing the traverse number at the descending slope so that the traverse angle gradually changes from the upper limit value to the lower limit value, A traverse device comprising: a traverse mechanism e for controlling the number of traverses of the winding yarn based on the output of the traverse number calculation means d,
Based on the detection value of the holder rotation speed detecting means b and the calculation result of the switching speed calculating means c, the lower limit value of the winding angle of the intermediate layer portion having the package diameter within the predetermined range is set to the outer layer portion thereafter. The lower limit value calculating means f for changing the lower limit value of the traverse number corresponding to the lower limit value of the traverse angle so as to be larger than the lower limit value of the traverse angle at the time of winding.

[0009]

According to the first and third aspects of the invention, the lower limit of the winding angle of the intermediate layer portion when the package diameter is within the predetermined range is the lower limit of the winding angle of the outer layer portion after that. Take up so that it is larger than the value. Therefore,
The so-called bulge in which the end surface of the package swells in the intermediate layer portion is suppressed, and the winding angle in the outer layer portion becomes large and the tightening and the reduction of the winding width due to the winding angle are also suppressed.

According to the second aspect of the present invention, the winding is performed such that the winding angle in the intermediate layer portion is relatively larger than the winding angle in the outer layer portion and the inner layer portion. It is possible to obtain a package having a good winding shape, which is excellent in pliability, in combination with the above-described actions such as bulge suppression and outer layer tightening suppression in the intermediate layer portion.

[0011]

Embodiments of the present invention will be described below in detail with reference to the drawings. 2 to 11 are views showing an embodiment of the traverse device according to the invention described in claim 3, and the device is also a device for carrying out the traverse control method of the first embodiment according to the invention described in claim 1. is there.

First, the structure of the apparatus will be described. In FIG. 2, reference numeral 1 denotes a bobbin holder, and the bobbin holder 1 has a bobbin 2 mounted thereon. Bobbin holder 1 and bobbin 2
When rotating integrally, the yarn is wound around the circumference thereof to form the package 3. A contact roller 4 contacts the package 3 with a predetermined contact pressure and rotates. A traverse cam 5 is arranged above the contact roller 4, and the traverse cam 5 traverses the yarn in a predetermined direction during the winding process of the yarn forming the package 3. The bobbin holder 1 is connected to a motor (induction motor) 7 via a drive shaft 6, and the motor 7 drives the bobbin holder 1 by rotating at a frequency according to the output of the inverter 8. Further, the traverse cam 5 has a drive shaft 9
Is connected to a motor (induction motor) 10 via a motor, and the motor 10 rotates at a frequency according to the output of the inverter 11 to drive the traverse cam 5. The traverse cam 5, drive shaft 9, motor 10 and inverter 11 constitute a traverse mechanism 12 as a whole.

The output control of each of the inverters 8 and 11 is performed based on a command from the controller 13, and signals from the electromagnetic pickups 14 and 15 are input to the controller 13. The electromagnetic pickup 14 is arranged close to the gear 16 connected to the contact roller 4, detects the rotation speed of the gear 16, and indirectly detects the rotation speed Nc of the contact roller 4. The electromagnetic pickup 14 and the gear 16 constitute a winding speed detecting means 17 as a whole.

On the other hand, the electromagnetic pickup 15 is arranged close to the gear 18 connected to the drive shaft 9 of the traverse cam 5, and detects the rotation speed of the gear 18 to indirectly determine the rotation speed N _T of the traverse cam 5. Detect. The electromagnetic pickup 15 and the gear 18 together constitute a cam rotation speed detecting means 19.
The rotation speed N _B of the bobbin holder 1 is detected by the electromagnetic pickup 27 by the gear 26 attached to the drive shaft 6 of the bobbin holder 1. The gear 26 and the electromagnetic pickup 27 constitute holder rotation speed detection means 28.

A signal from the setting device 20 is further input to the controller 13. The setter 20 is configured to take up the winding speed V of the yarn, the stroke S of the package to be wound, the avoidance width Z of the wind ratio, the lower limit value of the winding angle and the package diameter at the start of winding, and the lower limit value of the winding angle. The lower limit value of the traverse angle and the package diameter at the start of lowering the coil, and the lower limit value of the traverse angle when reaching the maximum winding diameter and the package diameter are set. This setting is performed by, for example, the operator of the winder. In addition, it is also performed by the setting device itself based on the program information from the controller 13. That is, the setting device 20
It is a setting means for setting the lower limit value of the traverse angle, the traverse stroke, the wind ratio to be avoided, and the like corresponding to the start of winding and when the predetermined package diameter is reached.

The controller 13 includes a CPU 21, RO
It is composed of M22, RAM23 and I / O port 24. The CPU 21 takes in external data required according to a program written in the ROM 22 and exchanges data with the RAM 23, while performing arithmetic processing on processing values required for yarn traverse control, and The data processed according to is output to the I / O port 24. I
The signals from the sensors 14, 15, 27 and the setting device 20 are input to the I / O port 24, and the command signal to the inverters 8 and 11 and the display signal S to the display device 25 are sent from the I / O port 24.
_H and the speed control signal to the inverter 8 are displayed on the display 25
Output to The ROM 22 stores an execution program and data in the CPU 21, and the RAM 23 performs primary storage of external information and data used for calculation. Also, the display
25 displays information necessary for winding control based on the display signal S _H.

The controller 13 has a function as a switching speed calculating means, and based on the setting information of the setting device 20, the winding angle θ from the lower limit value θL to the upper limit value θ at a predetermined wind W.
Increase width TH of traverse number T for switching to H
And a descending slope C for decreasing the traverse number T with an increase in the package diameter D so that the traverse angle θ is gradually decreased from the upper limit value θH to the lower limit value θL. Further, the controller 13 further has a function of a traverse number calculation means and a lower limit value calculation means, and based on the detection value of the holder rotation number detection means 28 and the calculation result as the switching speed calculation means, the package is described later. The number of traverses T is changed so as to change the traverse angle θ in a predetermined pattern in accordance with the increase in the diameter D. Then, the lower limit value TL of the traverse number is set so that the lower limit value θL of the traverse angle when winding the intermediate layer portion within the predetermined package diameter range is made larger than the lower limit value θL of the traverse angle when winding the outer layer portion thereafter. To change.

Next, the traverse control method of the first embodiment and the control operation of the above apparatus will be described. First, the traverse control method will be briefly described with reference to FIG. 4. In this embodiment, when the package is wound, the winding within the avoidance region (range of W _N ± Z) of the wind ratio W is avoided. Therefore, the lower limit value TL _N (where N =
1, 2, 3 ...) And the upper limit value TH _N , the traverse number T is sequentially increased or decreased, thereby changing the traverse angle θ in a similar pattern. That is, in the figure, the number of traverses T reaches the value TL _N corresponding to the lower limit value θ L _N of the traverse angle θ,
And the wind ratio W _N is the value _E L _N (W _N +
Z), the traverse number T is rapidly increased so that the traverse angle θ switches from the lower limit value θL _N to the upper limit value θH _N , and the traverse number T corresponds to the upper limit value θH _N of the traverse angle θ TH _N.
When the traverse angle θ reaches the upper limit value θH _{N, the} traverse angle becomes constant as the package diameter D increases so that the winding angle θ gradually decreases (changes) from the upper limit value θH _N to the lower limit value θL _{N + 1 of the} next avoidance area. The number of traverses T is reduced more slowly than the change in T. Further, the lower limit value θ _a of the winding angle at the time of winding the intermediate layer portion within a predetermined range in which the package diameter D is D _b or less
(Corresponding to θ L _{1 in} Fig. 4 and lower limit values before it)
Is larger than the lower limit value of the winding angle θ (corresponding to θL ₂ , θL ₃ and θL ₄ in FIG. 4) in the subsequent winding of the outer layer portion, the package diameter D becomes larger than D _b. Within the winding range of the outer layer portion up to the maximum package diameter D _c , the lower limit value θ L _N of the winding angle θ is decreased at a predetermined gradient along the gradient straight line L _b in FIG. Reduce to θ _c . The intermediate layer portion here refers to a winding layer in a winding region, which is empirically predicted to easily generate bulging from the winding condition, when the winding region is caught within the range of the package diameter. There is. Therefore, the intermediate layer portion may be a layer in the vicinity of an intermediate portion in the radial direction of the full-wrapped package, or a winding layer from the start of winding to the vicinity of the intermediate portion or a winding layer immediately after the start of winding. Can also be considered.

The specific processing will be described below.
Here, a case will be described in which the winding angle θ is set to a constant value θ _a from the start of winding to a predetermined package diameter D _b corresponding to FIG. Therefore, here, all of the winding layers from the start of winding to reaching the predetermined package diameter D _b are referred to as an intermediate layer portion. 3 and 5 are flowcharts showing a program for implementing the above-mentioned traverse control. This traverse control program is divided into a program for calculating the trajectory of the ribbon winding avoidance area (JOB-1) and a program for calculating the number of traverses (JOB-2).
Processing is performed from B-1 to JOB-2.

The JOB-1 shown in FIG. 3 is started by the operation of starting the input to the setting device 20. That is, first the necessary information in step P _1, for example, winding speed V of the yarn, the stroke S of the traverse, the lower limit of the winding angle of the winding start as shown in FIG. 4 theta _a and the package diameter D _a, Aya The lower limit value θ _{b of the} winding angle and the package diameter D _b at the time of starting to lower the lower limit value of the angle, the lower limit value θ _{c of the} winding angle when reaching the maximum package diameter and the package diameter D _c , and the avoidance width Z of the wind ratio. Etc. are set. The avoidance width Z of the wind ratio is preferably in the range of 0.05 to 0.2.

Then, the wind ratio M at the start of winding is calculated in accordance with the following equation (1) in P ₂ , and this is converted into an integer in P ₃ to obtain an integer wind ratio W ₁ . In addition, in this embodiment, the integer is rounded down, but either rounding up or rounding off may be used. Further, the wind ratio M is defined as M = bobbin holder rotation speed / traverse speed, but in the present embodiment, the value of the wind ratio is doubled to avoid a wind ratio of 0.5. There is.

Next, at P ₄ , it is judged whether or not the wind ratio M is within the avoidance width Z of the integer wind ratio W ₁ (W ₁ -M≤Z), and when W ₁ -M> Z (" for NO "), it is determined that wind ratio M is outside the avoidance width Z, it adds [1] to an integer winding ratio W ₁ obtained in P ₄ proceeds to P _5.
Further, when W ₁ −M ≦ Z (in the case of “YES”), it is determined that the wind ratio M is within the avoidance width Z of the integer wind ratio W ₁ , and the process directly proceeds from P ₄ to P ₆ .

Next, at P ₆ , the switching count value N is cleared (N = 1) and the routine proceeds to P ₇ , where the value EL _{1 obtained} by adding the avoidance width Z to the wind ratio W ₁ (W _N ) obtained at P ₅ above. (EL _N )
And the value EH ₁ (EH _N ) obtained by subtracting the avoidance width Z from the wind ratio W ₁ (W _N ) are calculated by the following equations (2) and (3). EL _N = W _N + Z (2) EH _N = W _N -Z (3) Next, at P ₈ , the package diameter D is the predetermined package diameter D.
It determines whether _b is less than, equal to or less than D _b ( "YE
For S "), corresponding to the intersection coordinates of the straight line L _a and the calculated wind ratio EL _N corresponding to winding angle theta _a in FIG. 4 at P ₉ theta
L _N, and calculates a D _N, (if the "NO") if exceeding the D _b, descending straight line L _b and the calculated wind ratio E in FIG. 4 at P ₁₀
.Theta.L _N corresponding to the intersection coordinates of the L _N, to calculate a D _N. Then, calculated wind ratio EH _N in P _11, D _N when winding angle, i.e. to calculate the upper limit .theta.H _N of the winding angle by the following equation (4).

[0024] Then, the process proceeds to P _12, the following equation and a lower limit value TL _N and the upper limit value TH _N traverse times T corresponding to the lower limit value .theta.L _N and the upper limit value .theta.H _N of the winding angle (5), is calculated from each (6) .

[0025] Then computes the holder rotational speed B _N per predetermined time when the package diameter D _N in P ₁₃ according to the following equation (7). Since the bobbin rotation number B _N is a value obtained by dividing the winding speed V by πD _N , it decreases as the package diameter D _N increases.

[0026] Next, at P ₁₄ , it is judged whether or not the switching count value N is [1], and if N = 1 is not satisfied (in the case of "NO"), at P ₁₅ , the descending slope C of the lower limit value θL _N of the traverse angle is determined. the _N-1 is calculated according to the following equation (8), (in the case of "YES") if N = 1, the process directly proceeds to P _16.

[0027] However, C _N-1 : downward slope TL _N : lower limit of traverse count calculated this time B _N-1 : rotational speed of bobbin holder calculated last time TH _N-1 : upper limit of traverse count calculated last time B _N : calculated this time Rotational Speed of Bobbin Holder Next, at P ₁₆ , B _N , T calculated as described above
L _N , TH _N and C _N-1 are stored in a predetermined area of the RAM 23.

[0028] Then, the process proceeds to P _17, if the package diameter D _N is less than the maximum package diameter Dc determines whether (D _N <Dc) or, "YES", the switching count value P ₁₈ N Is incremented (N = N + 1), then [1] is subtracted from the wind ratio W _N obtained in the previous routine at P ₁₉ , and the process returns to P ₇ again, that is, the above steps P _{7 to} P ₁₉ are repeated. by sequentially calculating the lower limit value TL _N and the upper limit value TH _N traverse speed corresponding to the lower limit value .theta.L _N and the upper limit .theta.H _N of winding angle theta. If the determination result in P17 is "NO", that is, if the package diameter D reaches the maximum package diameter (maximum winding diameter of the winding machine) Dc, the lower limit value TL _N and the upper limit value of the traverse number T are set. It is judged that the calculation of the value TH _N is completed, JOB-1 is ended, and the process proceeds to the next JOB-2.

FIG. 5 is a flowchart showing a traverse number calculation program (JOB-2) during winding.
After the end of JOB-1, this program starts the bobbin holder 1 and the traverse mechanism 12 by the start command of the winding machine, and when the predetermined number of rotations is reached, it starts by the operation command at P ₃₁ . When the operation of the winder is started, first the set value G is set at P _32.
Is initialized (G = 0), the bobbin holder rotational speed B is sequentially sampled at a predetermined cycle at P ₃₃ , and the rotational speed BL at the sampled rotational speed B and the maximum package diameter Dc is determined at P _34. Compare with Although the data is read based on the bobbin holder rotation speed B in this embodiment, the data may be read from the package diameter D. B ≧ BL In case of, the rotation speed B sampled at P ₃₅ and (JOB-
Compare the bobbin holder rotation speed B _N calculated in 1) to
When ≧ B _N , the values of B _{N + 1} and C _N calculated and stored in (JOB-1) at P ₃₆ are read. On the other hand, if B <B _N , the process directly proceeds to P ₃₇ . It calculates the traverse count T _O according In P ₃₇ the following equation (9).

T _O = C _N (B _{N + 1} −B) + TL _{N + 1} (9) where C _N : falling slope B _{N + 1} : corresponding to the lower limit θ _{N + 1} of the next winding angle Bobbin holder rotation speed B: Bobbin holder rotation speed sampled this time TL _{N + 1} : Lower limit value of traverse frequency corresponding to lower limit value θ _{N + 1} of the next traverse angle Next, rotation speed B sampled at P ₃₈ and bobbin holder rotation speed It compares the B _N, when the B = B _N set value G at P ₃₉

Substitute [0]. When B ≠ B _N , P ₃₉
Proceed to the P ₄₀ to jump. At P ₄₀ , as shown in FIG. 6, the data ΔT corresponding to G = 0 is read out from the data previously stored in the memory, and at P ₄₁ , the reference value T is calculated according to the following equation (10).

T = K (T _O + ΔT) (10) where T: reference value for comparison with the number of traverses sampled from the pickup 15 K: determined by the number of cam turns, the number of teeth of the gear 8, etc. A constant (which becomes a coefficient for determining the fluctuation range of the number of traverses, which will be described later) T _O : number of traverses calculated in P ₂₇ ΔT: value for varying the number of traverses in a predetermined fluctuation period Then, in P ₄₂ , this reference The value T is compared with the traverse rotation speed sampled by the pickup 15, and so-called PID control is performed based on these deviations to control the frequency of the inverter 11 supplying electric power to the motor 10. Further, the set value G is compared with the preset comparison value J at P _43. When G ≠ J, [1] is added to the set value G at P ₄₄ , and the process returns to P ₃₃ again. On the other hand, when G = J, the set value G is set at P _45.

Substitute [0] (G = 0), return to P ₃₃ again, and repeat the steps of P _{33 to} P ₄₄ (or P ₄₅ ). Then, at P ₃₄ , B <BL When, that is, when the winding diameter reaches the maximum package diameter Dc, it is judged that the calculation of the number of traverses T that can be wound is completed, and the current processing is completed.

As shown in FIG. 9, the shape of the package 3 wound up with the number of traverses thus obtained is such that the package stroke expands toward the outer side within a plurality of radial traverse number switching areas. In addition, when the number of traverses T rapidly increases, the winding width is smaller than the winding width that was previously wound, and thus the twisting is unlikely to occur.
When the above steps are repeatedly processed based on the data pattern as shown in FIG. 6 described above, the number of traverses has a characteristic as shown in FIG. You can get the number of traverses.

The magnitude of the fluctuation width (K · ΔT) here is determined by the magnitude of the set data ΔT, and the magnitude of the cycle t is determined by the set value of J. In this case, the fluctuation range (K · ΔT) is TL 0.5 to 8%, t is 0.5 to 4 sec
The degree is desirable. In addition to the pattern shown in FIG. 6, the ΔT pattern may be, for example, as shown in FIG.
The patterns may be set as shown in (a) and (b).

As described above, the traverse in this embodiment
In the control, the traverse number T is the lower limit value θ of the traverse angle during winding.
L And the wind ratio W must be avoided.
When the maximum value is reached, the winding angle θ becomes the lower limit value θL To the upper limit value θH To
To increase the number of traverses T rapidly so as to switch
On the other hand, the number of traverses T is the upper limit value θH of the traverse angle. The value corresponding to
After that, the traverse angle θ becomes the upper limit value θH. To the lower limit θ
L Change gradually until the package diameter D increases.
Then, the traverse frequency T is decreased almost continuously.
And the traverse angle θ is the upper limit value θH To the lower limit value θL Until reaching
In the meantime, the number of traverses T is set to a predetermined fluctuation range (K · ΔT) and
And the cycle (t).

Next, the function and effect of this embodiment will be described. In this embodiment, at least an integer wind ratio W ₁ ,
W _2, W ₃ ··· and the lower limit value .theta.L _N and the upper limit value .theta.H _N of winding angle to avoid the wind ratio within avoidance width (avoidance region) theta
The traverse angle T is rapidly increased from the lower limit value θL _N of the traverse angle θ to the upper limit value θH _N , and the package diameter D is increased from the upper limit value θH _N to the next lower limit value θL _{N + 1} . Along with that. Therefore, the time when it crosses the predetermined wind ratio W is shortened, and the occurrence of ribbon winding can be reliably prevented.

Further, the lower limit value θ L _N of the winding angle θ when winding the intermediate layer portion in which the package diameter D is within a predetermined range (D _b or less in this embodiment) is the value when the outer layer portion is wound after that. Since the winding is performed so as to be larger than the lower limit value θ L _{N ′ of the} traverse angle θ (where N ′ is a count value larger than N), the tension decreases a little as the traverse angle θ decreases and the traverse angle decreases. Since the winding width is increased, so-called bulging in which the end surface of the package 3 in the intermediate layer portion swells is suppressed, and also the winding angle θ in the outer layer portion is increased and winding tightening and reduction of the winding width due to it are also suppressed. To be done.

As described above, in this embodiment, the lower limit value and the upper limit value of the traverse angle are set, and the number of traverses is rapidly increased when the lower limit value of the traverse angle passing through the avoidance area is changed to the upper limit value. In addition, by decreasing the traverse number T with respect to the increase of the package diameter D so as to gradually decrease the traverse angle from the upper limit value to the lower limit value, it is possible to cope with the speedup and the increase of the package diameter. Ribbon winding can be reliably prevented, and the lower limit of the winding angle is appropriately controlled according to the change of the package diameter, so that the winding tightening or the bulge of the package edge due to the change of the winding angle can be prevented. A traverse control method that solves the problem of easy occurrence of yarns and improves the quality and looseness of the yarn package even when the speed is increased or the package diameter is increased. It is possible to realize a traverse device and.

Further, in the apparatus of this embodiment, since the simulation can be performed based on predetermined data so as to appropriately avoid the occurrence of the ribbon winding before the traverse device is actually operated, the occurrence of the ribbon winding can be more effectively performed. It can be avoided. In particular, in order to cope with cases such as today's production in small quantities and in many cases, or when brands are frequently changed, it is possible to easily implement a winding machine with an FMS (flexible production system) that changes the traverse stroke. Therefore, it is possible to appropriately respond to the recent demand for FMS and automation.

The descending gradient C _N-1 from the upper limit value to the lower limit value of the traverse angle is such that the traverse number T is reduced as the bobbin holder rotation number B _N is reduced as the package diameter D is increased. , Other aspects may be used. Figure 1
0, as shown in FIG. 11, it is conceivable to provide a constant winding angle period immediately after or immediately before the lowering of the winding angle (in both figures, when the lower limit value of the winding angle is constant from the start of winding to a predetermined package diameter). The lower limit of the constant value is shown only). Furthermore, it is possible to change not only the lower limit value TL _{N of the} number of traverses but also the lower limit value and the upper limit value.

Further, in this embodiment, the motor 10 is an induction motor, and the feedback control is performed by picking up the number of rotations. However, the feedback control may be omitted by the induction. Alternatively, a synchronous motor may be used without feedback control. Further, instead of storing the traverse control pattern in the memory, for example, a function may be stored and an operation may be performed by this function, and the upper and lower limit values of the number of traverses, the down slope, etc. may be input at the start operation. You may

FIG. 12 is a diagram for explaining the traverse control method of the second embodiment according to the invention described in claims 1 and 2. As shown in the figure, in the present embodiment, the winding start is started so that the winding angle θ in the intermediate layer portion where the package diameter falls within the predetermined range is relatively larger than the winding angle θ in the outer layer portion and the inner layer portion. Until the predetermined package diameter Dt is reached, the lower limit value T of the number of traverses T corresponding to the increase in the package diameter T
L (the lower limit value θL of the traverse angle θ) is raised at a constant gradient, and after reaching the predetermined package diameter Dt, the lower limit value TL of the number of traverses T is lowered at a constant gradient. The lower limit values θL ₂ and θL ₃ of the winding angle θ at the time of winding the intermediate layer part before and after the diameter Dt are
It is set to be larger than the lower limit value θL ₁ of the winding angle θ during the winding of the inner layer portion from the start of winding to the winding of the intermediate layer portion.

In this way, the winding width in the inner layer portion of the package 3 is sufficiently secured, and in combination with the action of suppressing the bulge and the outer layer portion in the above-mentioned intermediate layer portion, the pliability is improved. It is possible to obtain a package having a good winding appearance. FIG. 13 is a diagram for explaining the traverse control method of the third embodiment according to the first and second aspects of the invention.

As shown in the figure, in this embodiment, the lower limit values θL ₂ and θL _{3 of the} winding angle θ in the intermediate layer portion where the package diameter is within a predetermined range from D _t1 to D _t2 are the outer layer portion and the inner layer portion. At a predetermined package diameter D _t1 from the start of winding so that the winding angle θ becomes relatively large with respect to the lower limit values θ L ₁ and θ L ₄ .
Until the value reaches, the lower limit value TL (the lower limit value θL of the traverse angle θ) of the number of traverses T is increased with a constant gradient in response to the increase of the package diameter D, and the lower limit is fixed within a predetermined range from D _t1 to D _t2. After the value θL is maintained and the package diameter D _t2 is reached, the lower limit value TL of the traverse frequency T is lowered with a constant gradient.

Also in this embodiment, the winding width in the inner layer portion of the package 3 is sufficiently secured in the same manner as in the above-mentioned embodiment, and the action of suppressing the bulge and the tightening of the outer layer portion in the above-mentioned intermediate layer portion is achieved. Together with this, it is possible to obtain a package in a good winding shape with excellent solvability.

[0045]

According to the first aspect of the present invention, the winding angle is rapidly increased and gradually reduced at a predetermined winding ratio that prevents the occurrence of ribbon winding, and the predetermined package diameter is within a predetermined range. Since winding is performed so that the lower limit value of the winding angle at the time of winding the inner intermediate layer portion becomes larger than the lower limit value of the winding angle at the time of winding the outer layer portion thereafter.
It is possible to suppress the so-called bulge in which the end surface of the package swells in the intermediate layer portion, and it is possible to suppress the winding angle in the outer layer portion from becoming large and the winding width and the reduction in the winding width caused thereby. Therefore, a traverse control method that eliminates the adverse effects of bulging and tightening and can improve the quality and looseness of the yarn package even when the speed is increased and the package diameter is increased is realized. be able to.

According to the second aspect of the present invention, the winding is performed such that the winding angle in the intermediate layer portion is relatively larger than the winding angle in the outer layer portion and the inner layer portion. A sufficient winding width can be ensured, and in combination with the above-described actions such as bulge suppression and outer layer tightening suppression in the intermediate layer portion, it is possible to obtain a package in a good winding shape with excellent looseness. According to the invention described in claim 3, so-called bulging of the end surface of the package can be suppressed, and winding tightening in the outer layer portion and winding width reduction due to it can be suppressed, and adverse effects of bulging and winding can be eliminated. It is possible to provide a traverse device capable of improving the quality of the yarn package and improving the pliability even when the speed is increased and the package diameter is increased. Furthermore, it is possible to appropriately respond to the recent demand for FMS and automation.

[Brief description of drawings]

FIG. 1 is a basic conceptual diagram of a traverse device according to the present invention.

FIG. 2 is a configuration diagram of an embodiment of a traverse device according to the present invention and an apparatus for carrying out a first embodiment of a traverse method according to the present invention.

FIG. 3 is a flowchart showing a ribbon winding avoidance region calculation program in the first embodiment.

FIG. 4 is a diagram showing a relationship between a traverse angle (the number of traverses) and a package diameter (the number of rotations of a bobbin holder) for explaining the traverse control of the first embodiment.

FIG. 5 is a flowchart showing a traverse count calculation program in the first embodiment.

FIG. 6 is a diagram showing data for varying the number of traverses in the first example with a predetermined variation width and cycle.

FIG. 7 is a diagram showing a variation pattern of the number of traverses in the first embodiment.

FIG. 8 is a diagram showing another aspect of data for varying the number of traverses with a predetermined variation width and cycle.

FIG. 9 is a diagram showing a package shape wound by carrying out the traverse control method of the first embodiment.

FIG. 10 is a diagram showing another aspect of the control pattern of the number of traverses.

FIG. 11 is a diagram showing still another aspect of the control pattern of the number of traverses.

FIG. 12 is a diagram showing a relationship between a traverse angle (traverse frequency) and a package diameter (bobbin holder rotational frequency) for explaining a second embodiment of the traverse control method according to the present invention.

FIG. 13 is a diagram showing a relationship between a traverse angle (traverse frequency) and a package diameter (bobbin holder rotational frequency) for explaining a third embodiment of the traverse control method according to the present invention.

[Explanation of symbols]

1 ... Bobbin holder, 3 ... Package, 4 ... Contact roller, 8 ... Inverter (rotation speed control means), 12 ... Traverse mechanism, 13 ... Controller (switching speed calculation means, traverse number calculation means, lower limit value) Computation means), 17 ... Winding speed detection means, 20 ... Setting device (setting means), 28 ... Holder rotation speed detection means.

Claims (3)

[Claims] 1. A lower limit value and an upper limit value of a winding angle during winding are set in advance, and when winding a package, the winding angle is sequentially changed between the lower limit value and the upper limit value as the package diameter increases. Along with, when the traverse number reaches a value corresponding to the lower limit value of the traverse angle, the traverse number is rapidly increased so that the traverse angle is switched from the lower limit value to the upper limit value, and the traverse number is equal to the traverse angle. This is a yarn traverse control method in which the number of traverses is reduced with an increase in the package diameter so that the traverse angle gradually changes from the upper limit value to the lower limit value after reaching the value corresponding to the upper limit value. Then, the lower limit value of the winding angle of the intermediate layer portion when the package diameter falls within the predetermined range is set to be larger than the lower limit value of the winding angle of the outer layer portion when winding the outer layer portion thereafter. Of the package end face A traverse control method characterized in that bulging is suppressed. 2. The lower limit value of the winding angle when winding the intermediate layer portion is the lower limit value of the winding angle when winding the inner layer portion from the start of winding the package to the winding of the intermediate layer portion. The traverse control method according to claim 1, wherein the traverse control method is made larger. 3. A lower limit value of a traverse angle, a traverse stroke, which corresponds to a start of winding and a predetermined package diameter.
In addition, setting means for setting the wind ratio to be avoided, holder rotation speed detecting means for detecting the rotation speed of the bobbin holder with the package installed per predetermined time, and the traverse angle from the lower limit value to the upper limit value based on the setting information of the setting means. Switching speed calculation means for calculating the increase width of the traverse frequency for switching to and the descending slope for decreasing the traverse frequency with the increase of the package diameter so as to gradually decrease the traverse angle from the upper limit value to the lower limit value. When the number of traverses reaches a value corresponding to the lower limit value of the traverse angle, the traverse angle is switched from the lower limit value to the upper limit value based on the detection value of the holder rotation speed detection means and the calculation result of the switching speed calculation means. The traverse number is rapidly increased by the ascending width so that the traverse number reaches the value corresponding to the upper limit value of the traverse angle, A traverse number calculating means for decreasing the traverse number with the descending gradient so that the angle gradually changes from the upper limit value to the lower limit value; and a traverse mechanism for controlling the traverse number of the winding yarn based on the output of the traverse number calculating means. A traverse device including :, based on the detection value of the holder rotation speed detection means and the calculation result of the switching speed calculation means, the winding angle of the winding angle of the intermediate layer portion in which the package diameter falls within a predetermined range. It has a lower limit value calculating means for changing the lower limit value of the number of traverses corresponding to the lower limit value of the winding angle so that the lower limit value becomes larger than the lower limit value of the winding angle when winding the outer layer portion thereafter. Traverse equipment.