JPS62161681A - Winding method in winder - Google Patents

Abstract

PURPOSE:To prevent a ribbon winding without lowering productivity by turning on or turning off a motor for driving a traverse drum only in the vicinity of a package diameter in danger of generating a ribbon, when winding thread round the package. CONSTITUTION:Running thread is wound round a package P while making traverse by means of a traverse drum 1. the traverse drum 1 is driven by a motor Mn. When the winding of thread advances, the package enlarges its diameter like P3 or P4. When the diameter grows larger a cradle arm 3 rotates in the arrow A direction round an axis 2 and a fan-shaped winding diameter instructing member 4 rotates in the arrow B direction through rink mechanism 6, 7, 8. Iron pieces t1-t4 are fixed to the periphery of a fan 4, corresponding to a diameter in danger of the package P generating a ribbon. Only while a magnetic sensor Sn is output the motor Mn is turned off through a control circuit Rn. Hereby the occurrence of the ribbon is easily prevented without lowering productivity.

Description

[Detailed description of the invention] [Industrial application field] The present invention relates to a winding method in an automatic winder.

[Prior Art] Yarn is wound onto a package that is driven in surface contact by a traversing drum. In such an automatic winder, when the rotational speed of the traversing drum and the package becomes an integral multiple or a fraction of an integral number, the traversing period and the winding period of the buff cage are synchronized, so that the yarn being wound is the same. It happens that they gather in the same place and overlap each other and wind up like a ribbon.

Therefore, various ribbon winding prevention devices have been proposed in the past. That is, there are various types, such as a type in which the package is mechanically moved relative to the drum to cause a slip, and a type in which the package is wound while applying a brake to the drum.

[Problem that the invention seeks to solve]

However, the various ribbon winding prevention devices described above are always in operation during winding of the package, and therefore, constantly changing the rotation of the drum or the rotation of the package causes a decrease in package production efficiency. Alternatively, the more slippage occurs between the package and the drum during winding, the more damage to the yarn is inevitable.

The present invention aims to solve the above problems.

[Means to solve the problem]

The present invention is an automatic winder that winds yarn by rotating a package using a traversing drum that contacts the surface of the winder, in which the rotational speed of the traversing drum is changed only when the package diameter (d) is near the generation diameter. be. Here, D is the drum diameter, DW is the number of winds of the drum, and PW is the number of winds of the package.

〔Example〕

DESCRIPTION OF THE PREFERRED EMBODIMENTS The following describes an apparatus for carrying out the present invention.

In an automatic winder with a large number of winding units arranged in parallel, each winding unit has a balloon breaker, tensor,
Travels through waxing equipment, slab catcher, etc.
A package having a predetermined shape,
It is wound to match the amount of thread. The above package is wound up with the winding tube supported by the unit's cradle arm in a cantilevered or double-sided manner, and as the amount of winding increases, the cradle arm pivots around a single axis. There is.

FIG. 1 shows an example of an apparatus for carrying out the method of the present invention. (M
Reference numeral n) denotes a motor provided independently in each winding unit, and the traverse drum (1) is rotated by the motor (Mn). The traverse drum (1) is a known drum, and the number of winds (-D) is
Various types such as 1.5°, 2.2.5, etc. can also be applied.
The winding package (P), which is rotated in surface contact by the traversing drum (1), is rotated in a cantilevered or double-sided manner by the cradle arm (3), which rotates as the winding diameter increases around the -axis (2). freely supported.

In this embodiment, the winding diameter indicating member (4) that moves following the rotation of the cradle arm (3) is pivotally supported on the -shaft (5) as a fan-shaped lever (4). The above members (3
) (2) (4) Motion transmission member (6) (7)
(8) is composed of a lever, a rond, etc., and the rotation angle of the cradle arm (3) can be transmitted accurately at the same angle or at the same ratio. The circumferential surface of the sector-shaped lever (4) (
9) Iron pieces (Ll) to (t4) are fixed on the top at a constant pitch, and a detector (Sn) such as a proximity sensor for detecting the iron pieces (tl) to (t4) is installed at a predetermined position. . The positional relationship between the iron piece and the sensor (Sn) is set so that the iron piece is exactly at the sensor position when the winding diameter of the package (P) satisfies the relationship (a) 2 above.

For example, in Figure 1, the diameter (D) of the drum (1)
Assuming that the number of winds on the drum (i) is 2, the package diameter (d>) at which ribbon winding occurs is:
Set the package wind number (-P) to 4.2.1.0.5
Substituting into equation (a) as dl = 50m, d2
= l'oom, d3 = 200 drunkenness, d4" 40
0+n, and ribbon winding occurs near each package diameter.

Therefore, the iron piece (tl) is located at the operating position of the sensor (Sn) when the winding diameter of the package is di, and the iron piece (t2) is located at the operating position of the sensor (Sn) when the winding diameter of the package is di.
2, iron piece (t3) is d3, iron piece (t4) is d4
They are fixed on the lever (4) so that each sensor (Sn) is located at the operating position when the sensor (Sn) is in the operating position.

In addition, regarding the number of winds of the buff cage, see Sections 8-I to 8.
- Shown in Figure IV.

Any of the above iron pieces (tl) to (t4) is the sensor (Sn
), the signal from the sensor (Sn) is input to the control circuit (Rn) of the drum drive motor (Mn), and the second
The illustrated circuit turns the motor drive current on and off.

In FIG. 2, each winding unit (Ill) to (O
n) Traversing drum drive motor (Ml) installed in
-(Mn) is driven by a drive voltage a (10) from the main wiring (11) via branch wirings (12a) to (12n). The power supply (10) is set to a set voltage in a control box (13) provided at the end of the winder machine, and serves as a common power supply for each motor.

In the middle of the above-mentioned branch wiring (12a) to (12n), that is, each winding unit (υ1) to ([In), two-way, polar semiconductor switches, so-called tritic (14a) to (1
4n) is provided, and the motors (Ml) to (Mn) are driven and stopped by turning on and off the triac.

Triacs (14a) to (14) of each of the above units
The on/off signal to n) is emitted from the pulse signal oscillator (15) provided in the main body control box (I3), and the pulse signal (16) is sent from the main wiring (17) to the branch wiring (18a) to each unit. (18n) and the triac (1'4a) via AND circuits (A1) to (80)
~(14n) is input.

The AND circuits (A1) to (An) have signal lines (19a) from the sensors (Sl) to (3 ports) of each unit.
~(19n) is connected and therefore the sensor (Sl)
~ (Sn) only when activated, that is, when the puff cage is near the diameter where ribbon winding occurs, the triac turns on and off at the set cycle, that is, the non-contact switch opens and closes, and the motor (11
) to (Mn) flow intermittently.

Therefore, for example, in FIG. 1, the winding unit y )(Un
)17) F Ram (1) (7) Diameter (D) is 100
Since the wind number (WD) is 2, the iron piece (tl) first activates the sensor (Sn) when the package diameter is around 50m, and the motor (Mn) current is intermittently turned on and off as described above. Since it is turned off, a slip occurs between the package and the drum, the thread path of the traversed yarn is dispersed over the package, and ribbon winding is avoided. Package diameter is 50~
Between 100 M and 100 M, since the sensor (Sn) is located between the iron pieces (tl) (t2), the signal from the sensor (Sn) is not input to the AND circuit (An) in Fig. 2.
Therefore, the triac (14n) remains on, the motor current continues to flow, the motor rotates at a constant speed, and the normal winding speed is maintained.

Subsequently, when the package diameter reaches around 100H, the current of the tram motor (Mn) is turned on and off again as described above to prevent ribbon winding.

3 to 6 show each state as shown in FIGS. Figure 3 shows the change in the winding diameter of the package, Figure 4 shows the change in the rotation speed of the drum motor, Figure 5 shows the on/off state of the triac, and Figure 6 shows the on/off state of the sensor (Sn). Indicates off state,
That is, for example, near the ribbon winding diameter (d2) C64), the sensor (Sn) turns on (T2) (T4), turning the triac on (a) and off (b), and the rotational speed of the drum motor changes. However, while the triac is on (a), the drum motor speeds up, and this time (a) is called the up interval, and while the triac is off (b), the drum motor decelerates. This time (b) is called a down interval.

The above-mentioned intervals (a) and (b) are set by adjustment knobs (Va) and (Vb) in the control box (13) of FIG. That is, the up interval (a) is 0.5 to 2 seconds, and the down interval (b) is 0.5 to 2 seconds.
．． It is desirable to make the adjustment within a range of 5 seconds. More preferably, if the up interval (a) is 1.0 seconds or less, the rotation will only decrease and the effect of preventing ribbon winding will be small.
If the down interval (b) is 1.8 seconds or more, it will have little effect.For example, if the buff cage diameter is larger than the drum diameter and ribbon winding is noticeable, use unfintarpal (
a) for about 1 second, down interval (b) for 1.2 to 1
．． By setting the time to about 5 seconds, ribbon winding can be effectively prevented, and the reduction rate of the drum rotation speed (formerly n rotation speed/M
The ax rotation speed (X 100) is also about 80 to 85%, and the winding efficiency is not significantly reduced.

Note that the settings for each of the above-mentioned intervals differ within the range of the above-mentioned intervals, since the dispersion angle due to ribbon slip, the number of ribbons converged, etc. differ depending on various conditions such as yarn type, package weight, drum material, contact pressure, etc. It is necessary to actually measure the dispersion angle, number of condensed ribbons, etc. of the generated ribbons by decreasing the up interval (a) and increasing the down interval (b), and to set an interval suitable for the conditions.

Furthermore, the on-time (TI) (T2) (T
3) As mentioned above, the time (T4), that is, the time when the triac is on and off, is only around the ribbon winding diameter, but the actual time (T1) to (T4) depends on the package winding diameter. It depends.

That is, when the package diameter is small, the ribbon winding diameter passes through in a short time, and when the package diameter is large, the time near the ribbon generation diameter becomes long.

Note that the vicinity of the ribbon winding diameter refers to, for example, Figures 7-r to 7.
As shown in Figure -111. That is, package (P)
If ribbon winding occurs when the diameter is (d4), then at a winding diameter of d4-α before the occurrence diameter, the folded end of the traversing yarn becomes (Yl) - (T2) - (T3). The distance (e) shifts in the negative direction, and as the winding diameter approaches d4, the above distance (e) approaches zero (and when it becomes zero, the theoretical winding diameter (d4) is the drum. It corresponds to when it becomes an integer multiple of the diameter.

At this time, the ribbon winding becomes most noticeable, and when the package diameter increases further and reaches d4+α, the direction in which the traverse end moves by a distance (e) becomes a positive direction opposite to the above, and the winding diameter increases. At the same time, the distance #(e) becomes even larger and moves out of the ribbon winding generation range.

Therefore, in the above embodiment, the vicinity of the ribbon winding diameter (+N) means d4-α<di<d in the case of Figures 7-1 to 7-I.
4+α, which means that the tritic is turned on and off only during this period. In addition, the above change in yarn layer thickness (
Assuming that α) is approximately equal for each ribbon winding diameter (di) to (d4), the time for winding the yarn of the yarn layer (α) is smaller when the winding diameter is small, and therefore each The time to wind the yarn of the yarn layer (α) is different depending on the ribbon winding diameter, and of course it is a trier.

Preferably, the operating times of the drum motors, ie the time during which the drum motor is changing speed, are also different. For example, in the case of the above embodiment, it is assumed that the time required to wind up a full package is 2 hours, and the ribbon winding diameter (dl) to (d4) is 4 times. The above α is 5 dragons, yarn speed is about 1000
m7 minutes, the drum motor fluctuation time (T1) near the winding diameter d1 is 1 minute, around d2 is 2 minutes, around d3 is 4 minutes, around d4 is 8 minutes, and so on due to the difference in the winding diameter. ,(
The times T1) to (T4) are also set differently. Also, assuming that the average rotational speed of the drum motor in (T1) to (T4) above is 85% of the normal rotational speed, (TI)
+(T2) + (T3)71-(T4)I! II. In the above example, winding is performed at 85% of the normal winding speed for 15 minutes, resulting in a reduction in production speed. That is, if the normal yarn speed is 8m7 minutes and the yarn is wound at a constant speed for 2 hours, 120 β(m) of yarn can be produced, whereas if the yarn is wound at 85% of the yarn speed for the above 15 minutes, 2 In time (0,85βX 15) + 105 β-117
,75β(m), and the production efficiency is slightly down to 98.1%. Incidentally, in the case where the drum motor is constantly varied during winding, and the average yarn speed is 85%, the production efficiency naturally decreases by as much as 15%.

The operating times (TI) to (T4) of the above sensor can be set by changing the widths of the iron pieces (Ll) to (+4) in Fig. 1, or by electrically using a sequence circuit. , Darkness is simply configurable.

FIG. 9 shows another embodiment for controlling the drum motor.

In the above embodiment, the drum motor was turned on and off by a triac, but in FIG. 9, the drum motor (Ml) to
(Mn) is controlled by an inverter. That is, the drum motors □fl) to (Mn) of each winding unit (Ul) to (Iln) are connected to the electric current a(10) through inverters (+1) to (In) provided in each unit.
It is connected to the. That is, in each unit, a single motor is driven by an inverter to rotate the traverse drum, and the number of rotations of the drum motor changes by changing the frequency of the inverter.

Signals from the sensors (Sl) to (Sn) that detect that the winding diameter has become near the ribbon generation diameter are sent to a frequency circuit (CI
) to (Cn), and the inverter (■1) to (In
) is changed regularly or randomly, and the rotational speed of the motors (Ml) to (Mn) is changed. Changes in the rotation speed of the motor mentioned above are detected by the sensor (Sl) as in the case shown in the third figure.
This is the same as in the embodiment described above, in that the process is performed only when ~(Sn) is acting, that is, only in the vicinity of the ribbon winding generation diameter. In this case, in the fourth embodiment, the rotation speed of the motor was passively changed by turning on and off the motor current, but when using an inverter, the rotation speed of the motor changes even during the so-called down interval when the drum rotation decreases. is on, causing an active change in rotation speed.

The principle for avoiding ribbon winding in this embodiment is the same as that explained in the previous embodiment, and ribbon winding is prevented by slipping of the package surface due to a change in the drum rotation speed.

〔Effect of the invention〕

As described above, in the present invention, since the rotation speed of the drum motor is changed only in the vicinity of the ribbon winding diameter of the package, ribbon winding is prevented and the ribbon winding efficiency of the winding unit, that is, the production amount is not reduced. Rolling is prevented. Furthermore, since the drum motor can be controlled in each unit, each unit can perform detailed ribbon winding prevention operations.

[Brief explanation of drawings]

Fig. 1 is a schematic configuration diagram showing an example of a device implementing the present invention, Fig. 2 is a circuit diagram showing an embodiment of a drum motor control device, and Fig. 3 is a relationship between the winding diameter of the winding package and time. Figure 4 is a diagram showing changes in the rotation speed of the drum motor near the ribbon winding diameter, Figure 5 is a diagram showing the on/off state of the triac, and Figure 6 is a diagram showing the change in the rotation speed of the drum motor near the ribbon winding diameter.
) Diagrams showing the operation timing of Figures 7-1 to 1-m
The figure is a schematic explanatory diagram showing the twill arrangement on the package surface near the ribbon winding diameter, Figures Br to 8-IT are diagrams explaining the wind number of the puff cage, and Figure 9 is a control of the drum motor rotation speed. FIG. 3 is a circuit diagram showing another embodiment of the device. (1)...Trailing drum (P) (PI) ~ (P4)...Ba, cage (Ml)
~(Mn) ”・Motor (14a) ~(14n) ・・・Triac (di)
... Near the ribbon winding diameter (■1) ~ (In) ... Inverter procedure amendment (
Voluntary) May 77, 1985 1 Indication of the case Patent Application No. 2536 of 1988 3 Telephone number of the person making the amendment 075 (672) 8222 4 Date of notice of reasons for refusal (Attachment Specification 1, Invention Title Winder Winding Method 2, Claims A winder that winds a running yarn around a package while traversing the yarn, characterized in that a ribbon breaker operation is performed only in the vicinity of the package diameter where ribbon winding of the package occurs. 3. Detailed Description of the Invention [Field of Industrial Application] The present invention relates to a winding method in an automatic winder. [Prior Art] Yarn is wound into a package which is driven in surface contact by a traversing drum. In such an automatic winder, when the rotational speed of the traverse drum and pan gauge becomes an integral multiple or a fraction of an integer, the traverse cycle and the package winding cycle are synchronized. As a result, the yarn being wound gathers in the same place and overlaps, causing it to be wound into a ribbon.Therefore, various ribbon winding prevention devices have been proposed in the past. There are various ribbon winding prevention devices, such as a type in which the ribbon winding is caused by slipping, and a type in which the ribbon winding is performed while applying a brake to the drum. Therefore, constantly changing the rotation of the drum or the rotation of the package will cause a decrease in package production efficiency.Also, if there is a lot of slip between the package and the drum during winding, it will cause problems in science. An increase in the damage caused is unavoidable.The present invention aims to solve the above problem. [Means for solving the problem] The present invention rotates the package by a traversing drum that contacts the surface. In an automatic winder that winds yarn, a ribbon breaker operates only near the package diameter where ribbon winding of the package diameter occurs. [Embodiment] The present invention will be explained below according to an apparatus implementing the present invention. A large number of windings In an automatic winder with units arranged side by side, each winding unit has a balloon breaker, tensor,
Travels through waxing equipment, slab catcher, etc.
A package having a predetermined shape,
It is wound to match the amount of thread. The above package is wound up with the winding tube supported by the unit's cradle arm in a cantilevered or double-sided manner, and as the amount of winding increases, the cradle arm pivots around a single axis. There is. FIG. 1 shows an example of an apparatus for carrying out the method of the present invention. (N
A motor (Mn) is provided independently in each winding unit, and the traverse drum (1) is rotated by this motor (Mn). The traverse drum (1) is a well-known drum, and has a wind number (WD).
) can also be applied in various ways such as 15.2.2.5,
The winding package (February) whose surface is rotated by the traversing drum (1) can be freely rotated in a cantilevered or double-sided manner on a cradle arm (3) which rotates as the winding diameter increases around a single shaft (2). In this embodiment, the winding diameter indicating member (4), which moves following the rotation of the cradle arm (3), is supported as a fan-shaped lever (4) on the -shaft (5). The above member (3
) (2) (4) Motion transmission member (6) (7)
(8) is composed of a lever, a rond, etc., and the rotation angle of the cradle arm (3) can be transmitted accurately at the same angle or at the same ratio. The circumferential surface of the sector-shaped lever (4) (
9) Iron pieces (tl) to (t4) are fixed on the top with a certain pinch, and a detector (811) such as a proximity sensor for detecting the iron pieces (tl) to (t4) is installed at a predetermined position. . The positional relationship between the iron piece and the sensor (Sn) is as follows: (7) The winding diameter (d) is d""D
The iron piece is set so that it is exactly at the sensor position when the relationship of
■ is the number of winds of the package. For example, in FIG. 1, if the diameter (D) of the drum (1) is 100N and the number of winds (WD) of the drum is 2, the package diameter (d) at which ribbon winding occurs is the number of winds (WP) of the package. ) is 4.2°1.05 and substituted into equation (a), di = 50 shoes, d2 = loo
HIR, d3=2QQwR, d4=400ER,
Ribbon winding will occur near each package diameter. Therefore, the iron piece (tl) is located at the operating position of the sensor (Sn) when the winding diameter of the package is dl, and the iron piece (tl) is located at the operating position of the sensor (Sn).
t2) is d2, iron piece (t3) is d3, iron piece (t
4) are fixed on the lever (4) so that each sensor (8 ports) is located at the operating position at the time of d4. In addition, regarding the number of winds of the package, please refer to Sections 8-1 to 8.
- Shown in Figure IV. Any of the above iron pieces (tl) to (t4) is the sensor (Sn
), the signal from the sensor (8n) is input to the control circuit (Rn) of the drum drive motor (Mn), and the second
The illustrated circuit turns the motor drive current on and off. In Fig. 2, each winding unit (Ul) to ((Jn)
Traverse drum drive motors (Ml) to (Mn
) is driven by a drive power source (10) and a main wiring (11) via branch wirings (12a) to (12+1). The power supply (+(, )) is set to a set voltage in a control box (13) provided at the end of the winder machine and serves as a common power supply for each motor. Two-way semiconductor switches, so-called triacs (14a) to (14n) are installed in the middle of the L branch wiring (12a) to (12n), that is, to each winding unit ([Jl) to (Un).
are provided, and the respective motors (input fl) to (Mn> are driven and stopped by turning on and off the triacs. The triacs (14a) to (14) of each unino 1- are provided with
The on/off signal to the main unit control box (13)
is emitted from a pulse signal oscillator (15) provided in
The pulse signal (16) is sent from the main wiring (17) to the triac (14a) through branch wiring (18a) to (18rl) of each unit and AND circuits (A1) to (An).
) to (14n). Above AND circuit (AI)
~(An) is the sensor (Sl) ~(S) of each unit.
The signal lines (19a) to (19n) from n) are connected, so only when the sensors (SL) to (Sn) are activated,
In other words, when the back cage reaches the vicinity of the diameter where ribbon winding occurs,
The triac is turned on and off at a set period, that is, the non-contact switch is opened and closed, and the drive current of the motors (Ml) to CΔIn) flows intermittently. Therefore, for example, in FIG.
) The diameter (■) of the drum (1) is 100w1,
Since the wind number (0VD) is 2, the iron piece (tl) first activates the sensor (Sn) when the package diameter is around 50, and the motor (8■n) current is intermittently turned on and off as described above. As a result, slippage occurs between the seven drums of the package, the thread path of the traversed yarn is dispersed over the package, and ribbon winding is avoided. Package diameter is 50~100.
7I71, the sensor (Sn) is located between the iron pieces (tl) (t2), so the AND circuit (A
The signal from the sensor (Sn) is not input to n), so the triac (14n) remains on, the motor current continues to flow, the motor rotates at a constant speed, and the normal winding speed is maintained. Ru. Subsequently, when the package diameter reaches around 100 M, the current of the drum motor (Mn) is turned on and off again as described above to prevent ribbon winding. The above states are shown in FIGS. 3 to 6. Figure 3 shows the change in the winding diameter of the package, Figure 4 shows the change in the rotation speed of the drum motor, Figure 5 shows the on/off state of the triac, and Figure 6 shows the on/off state of the sensor (Sn). Indicates off state. That is, for example, in the vicinity of the ribbon winding diameter (d2) (d4), the sensor (Sn) turns on (T2) (T4), the triac turns on (a) and turns off (b), and the rotation speed of the drum motor changes. However, while the triac is on (a), the drum motor speeds up.
This time (a) is called an amplifier interval, and since the drum motor decelerates while the triac is off (b), this time (b) is called a down interval. Each of the above-mentioned intervals (a) [yes]) is set by the adjustment knob (Va) (\rb) in the control box (13) in FIG. That is, up interval (a) is 05
It is desirable to adjust the down interval (b) within a range of 0.5 to 2.5 seconds. More preferably,
When the amplifier interval (a) is 10 seconds or less, the rotation only decreases, and the effect of preventing ribbon winding is small, and the down interval (1)) has little effect north of 18 seconds, for example, when the package diameter is larger than the drum diameter. If the ribbon winding is noticeable, set the up interval (a) to about 1 second,
By setting the down interval (1)) to about 1.2 to 15 seconds, ribbon winding can be effectively prevented, and the rate of decrease in drum rotation speed (Min rotation on / fax rotation speed x 100) can be reduced. It is about 80 to 85%, and the winding efficiency does not decrease significantly. Note that the settings for each of the above-mentioned intervals differ within the range of the above-mentioned intervals, since the dispersion angle due to ribbon slip, the number of ribbons converged, etc. differ depending on various conditions such as yarn type, package weight, drum material, contact pressure, etc. It is necessary to actually measure the dispersion angle, number of condensed ribbons, etc. of the generated ribbons by decreasing the up interval (a) and increasing the down interval (a), and to set an interval suitable for the conditions. Furthermore, the on time (Tl) of the above sensor (T2XT3)
As mentioned above, the time (T4), that is, the time when the triac is on and off, is only around the ribbon winding diameter, but the actual times (T1) to (T4) vary depending on the winding diameter of the package. . That is, when the package diameter is small, the ribbon winding diameter passes through in a short time, and when the package diameter is large, the time near the ribbon generation diameter becomes long. The vicinity of the ribbon winding diameter is, for example, as shown in Figs. 7-I to 7-111. That is, the package (P) has a winding diameter (d4
), if ribbon winding occurs, the diameter before the occurrence is (
With a winding diameter of 14-α, the folded end of the traversing yarn is (
Yl) - (Y2) - (Y3), it shifts by distance (e) and moves in the negative direction, and as the winding diameter approaches d4, the above distance (e) approaches zero and becomes zero. This coincides with the time when the theoretical winding diameter (d4) becomes an integral multiple of the drum diameter. At this time, the ribbon winding becomes most noticeable, and when the package diameter further increases and reaches d4+α, the direction in which the traverse end moves by a distance of 111i(e) becomes a positive direction, contrary to the above, and the winding diameter increases. As the distance (e) increases, the distance (e) becomes further larger and moves out of the diameter range where ribbon winding occurs. Therefore, in the above example, the vicinity of the ribbon winding light diameter (d[) is d4-α(di(
d4+α, which means that the triac is turned on and off only during this period. Assuming that the above change in thread waste thickness (α) is approximately equal for each ribbon winding diameter (dl) to (d4), the time for winding the thread of the thread layer (α) is The smaller the diameter, the smaller the diameter. Therefore, the time for winding the yarn of the yarn layer (α) is different for each ribbon winding diameter. Naturally, the operating time of the l-rianok, that is, while the speed of the drum motor is changing, It is preferable that the times are also different. For example, in the case of the above example, the time required to wind a full package is 2 hours, and the ribbon winding diameter (dl) to (d4) is 4 hours.
Suppose that it is times. The above α is 5m, yarn speed is about 1000n]
/' minutes, the variation time (T1) of the drum motor around the winding diameter d1 is 1 minute, around d2 is 2 minutes, around d3 is 4 minutes, around d4 is 8 minutes, and so on. By (
The times of Tl) to (T4) are also set differently. Also, assuming that the average rotational speed of the drum motor in (TI) to (T4) above is 85% of the normal rotational speed, (Tl)
+(T2) +(T3)+(T4) That is, in the above example, winding is performed at 85% of the normal winding speed for 15 minutes, resulting in a decrease in production speed. In other words, if the normal yarn speed is βm 7 minutes and the yarn is wound at a constant speed for 2 hours, 120β (m) of yarn can be produced, whereas if the above 15 minutes is wound at 85% yarn speed, it will take 2 hours. Then (085βX
15) +105β: 117.75β(m),
Production efficiency will drop slightly to 981%. Note that when winding is performed by varying the drum motor during winding, if the average yarn speed is 85%, the production efficiency will naturally decrease by as much as 15%. The operating time of the sensor (T19 to (T4)) can be set by changing the width of the iron piece (tl) to (t4) in FIG. 1, or by electrically using a sequence circuit. It can be easily set. Fig. 9 shows another embodiment for controlling the drum motor. In the above embodiment, the drum motor was turned on and off by a triac, but in Fig. 9, the drum motor (Ml) to
(Mn) is controlled by an inverter. That is, the drum motors (Ml) to (Mn) of each winding unit (Ul) to (Un) are connected to the power source (10
)It is connected to the. In other words, in each unit, the traverse drum is rotated by independent morph drive by an inverter.
The rotation speed of the drum motor changes by changing the frequency of the inverter. Signals from the sensors (Sl) to (Sn)'b), which detect that the winding diameter has reached the vicinity of the ribbon generation diameter, are input to the frequency circuits (CI) to (Cn), and are input to the inverters (11) to (In ) is changed regularly or randomly, and the rotational speed of the motors (Ml) to (Mn) is changed. Similar to the embodiment described above, the rotation speed of the motor is changed only when the sensors (Sl) to (Sn) are acting, that is, only in the vicinity of the ribbon winding generation diameter, as in the case shown in the third diagram. be. In this case, the key is
In the case of the above embodiment, the rotation speed of the motor was changed passively by turning on and off the motor current, but in the case of using an inverter, the current remains on even during the so-called down interval when the drum rotation decreases, so to speak, it is active. change the rotation speed. The principle for avoiding ribbon winding in this embodiment is the same as that explained in the previous embodiment.
Ribbon winding is prevented due to slippage on the package surface due to changes in drum rotation speed. In the above embodiments, the case where the rotational speed of the drum is changed as a ribbon breaker operation is described, but it goes without saying that a conventional ribbon winding prevention mechanism, such as a type that mechanically moves the package relative to the drum as described above, may also be used. Similarly, in the case of a type in which the cradle arm supporting the package is moved up and down periodically or non-periodically to separate and contact the surface of the package with the drum surface, the package can be moved only in the vicinity of the panogooge diameter where ribbon winding occurs. Effects similar to those of the above embodiment can be obtained by operating the cradle arm actuating device to move the cradle arm toward and away from the cradle arm. [Effects of the Invention] As described above, in the present invention, the ribbon breaker operation is performed only in the vicinity of the ribbon winding diameter of the package, so ribbon winding can be prevented without reducing the winding efficiency of the winding unit, that is, the remaining production volume. It will be done. 4. Brief description of the drawings Fig. 1 is a schematic configuration diagram showing an example of a device implementing the present invention, Fig. 2 is a circuit diagram showing an embodiment of a control device for a drum motor, and Fig. 3 is a diagram showing an example of a winding package. A diagram showing the relationship between the winding diameter and time, Figure 1 is a diagram showing changes in the rotation speed of the drum motor near the ribbon winding diameter, and Figure 5 is a diagram showing the on/off state of the triac. Figure 6 shows sensor <s
Diagrams showing the operation timing of n), Figures 7-1 to 7-
Figure 111 is a schematic explanatory diagram showing the twill arrangement on the package surface near the ribbon winding diameter, Figures 8-1 to 8-IV are diagrams explaining the number of winds of the package, and Figure 9 is a diagram showing the number of rotations of the drum motor. FIG. 3 is a circuit diagram showing another embodiment of the control device. (1)...Trailing drum (P) (PL) ~ (P4)...Package (Ml)
~(Mn piece... motor

Claims (1)

[Scope of Claims] A winder that winds a running yarn around a package while traversing the yarn is characterized in that the rotation speed of a drum driving motor that rotates the package is changed only in the vicinity of the ribbon winding diameter of the package. Winding method in a winder.