JPH0733211B2 - Yarn winding method and device - Google Patents

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for winding a yarn and an apparatus therefor, and particularly to a method for winding a yarn that allows smooth switching of the winding of the yarn. It relates to the device.

(Prior Art) Conventionally, as a winding method and device for this type of yarn, for example, Japanese Patent Publication No. 58-7590 and Japanese Patent Publication No. 60-1393.
Some are described in the 9th bulletin, etc.

(Problems to be solved by the invention) However, in such a conventional example, when the yarn guide is transferred from the full-winding bobbin to the empty bobbin, the yarn guide becomes longer than in the winding state, Alternatively, in the case of a drawn yarn having a small degree of drawing, there is a problem that unevenness occurs in the yarn quality and sometimes the yarn is cut. In particular, when the winding (feeding) speed of the yarn is 5000 mm / min or more, it is impossible to switch the yarn in terms of the drawing strength. Also, after the yarn is switched to the empty bobbin, when the yarn guide is returned to the original winding position, the yarn guide becomes abruptly short,
The yarn was sometimes loosened and cut. Furthermore, when the yarn is switched to the empty bobbin, the yarn is squeezed by the yarn guide, and fluff is generated or cut.

The present invention has been made to solve such conventional problems, and an object of the present invention is to provide a winding method and a device therefor capable of smoothly and efficiently performing switching while maintaining the quality of yarns. .

(Means for Solving the Problems) In order to solve the above problems and achieve the object, a yarn winding method according to the present invention includes a pair of juxtaposed bobbin holders rotatably supported by a frame. When the yarn wound on the one bobbin is switched to the empty bobbin on the other bobbin holder, the other bobbin holder is moved in its axial direction and moved to the one bobbin holder side to provide the yarn on the empty bobbin. The yarn gripping portion is brought close to the yarn traveling path being wound, the yarn gripping portion catches and grips the yarn, and the yarns are switched and wound.

Further, the device is arranged rotatably side by side on a frame at intervals in the horizontal direction, is movable in the axial direction, and is adjacent to the pair of bobbin holders, and a pair of bobbin holders that are movable toward the other side. And a pair of yarn guide members rotatably supported by the frame at predetermined intervals in the vertical direction, and the yarn is caught and grasped by one of the bobbin holders that has moved between the pair of yarn guide members. Is configured to.

(Embodiment) An embodiment of a yarn winding method and apparatus according to the present invention will be described below with reference to the drawings.

1 to 17 show a first embodiment of the present invention. Fig. 1 ~
In FIG. 9, 1 is the base of the apparatus, 2L and 2R are a pair of symmetrical frames that form the main body of the apparatus, 3 is a frame that is provided between these two frames 2L and 2R and also forms the main body of the apparatus, and 4L and 4R are A plurality of bobbin holders rotatably supported by the frames 2L and 2R and arranged in the vertical direction, and these bobbin holders 4L and 4R are directly connected to the rotation output shafts of drive motors 11L and 11R, respectively, which will be described later. . 6L and 6R are support brackets provided on the frame 3 at the center of the device, and 7L and 7R are a plurality of support brackets 6L and 6R which are rotatably supported by rotary shafts 7l and 7r to guide the yarn Y. Guide rollers (see FIG. 10) 8-10 are bearings that slidably support the frames 2L, 2R, and 3 on the base 1, respectively. Further, each of the bobbin holders 4L and 4R is directly connected to the rotation output shafts of the drive motors 11L and 11R installed in the frames 2L and 2R, and as shown in FIGS. , 11R are supported via ball bearings 12 so that they can freely swing in the horizontal direction. Bobbins 13L and 13R for winding the yarn Y are fitted on the bobbin holders 4L and 4R and rotate integrally. Bobbins
13L and 13R are provided with slit-shaped yarn gripping portions 13l and 13r for gripping the yarn ends of the yarn Y, respectively.

Further, in FIG. 11 showing the control circuit of the device, 15L and 15R are rotation sensors for detecting the respective rotation speeds of the guide rollers 7L and 7R, and 16L and 16R are for compensating for the respective rotation loss of the guide rollers 7L and 7R. Induction motors rotating at substantially the same number of revolutions, 17L and 17R are inverters for rotationally driving the drive motors 11L and 11R, and 18 is a stepping motor for performing a traverse traverse motion of the central frame 3 during thread guiding. , 19 is a drive power source for the stepping motor 18, 20 is an inverter for rotating the induction motors 16L and 16R, U is an electronic control unit by a microcomputer, and the microcomputer is an I / O port 21, CPU22, ROM23, and RAM.
It consists of 24 mag. Reference numeral 26 is a solenoid valve, which controls the switching of the fluid pressure of a fluid cylinder (not shown) that performs the forward / backward movement of the frames 2L and 2R, the up / down movement of the support brackets 6L and 6R, and the swing movement of the bobbin holders 4L and 4R To do.
27 is a setting device that presets the winding speed, winding time, and other conditions of the yarn Y, 28 is an indicator that displays the winding speed and winding time, and 30 is the traverse origin when traversing. The position sensors for detection, 31L and 31R, are electromagnetic switches.

Further, in FIG. 12 showing the traverse mechanism of the yarn Y,
32 is one timing pulley fitted and fixed to the output shaft 18a of the stepping motor 18, 33 is the other timing pulley fitted and fixed to the ball screw 35 fixed to the frame 3, and these pulleys 32, 33 Timing belt between
34 is suspended, and the frame 3 reciprocates through the ball screw 35 by the forward / reverse rotation of the stepping motor 18, and the guide rollers 7L and 7R traverse the frame 3 integrally and traverse the yarn Y.

Further, FIGS. 19 and 20 show a second embodiment according to the present invention. The same or similar members as those of the first embodiment are designated by the corresponding reference numerals and the duplicated description will be omitted.

As is clear from the figure, the entire device is provided at a predetermined angle with respect to the base 1 so that the yarn Y and the bobbins 13L and 13R do not interfere with each other, and there is a space between the yarn guides of the yarns Y. W is generated. The switching method is exactly the same as that of the first embodiment, but the first embodiment is configured such that each of the bobbin holders 4L and 4R can be independently tilted at the time of switching, but in the second embodiment, Four drive motors 51, which are rotatably supported by a single housing 50, can be tilted toward the adjacent bobbin holders 4L, 4R around a support shaft 50a. Further, the four upper stages of the yarn guide 52 are for changing the yarn guide for introducing the yarn Y into the guide rollers 7L and 7R, and the four lower stages are the yarn hooking guides during the yarn hooking.

Next, the operation and action of the first embodiment will be described.

As an example, the thread hooking is performed from the bobbin holder 4R to the empty bobbin 13L on the bobbin holder 4L as shown in the figure.
First, as shown in FIG. 4, the yarn Y is hooked on the yarn hooking guide 14 via the guide roller 7R while sucking the yarn ends of the plural yarns Y (four in the embodiment) by the suction gun 46.
Next, when a threading command signal is issued from the electronic control unit U, each bobbin holder 4L rotates until it reaches a predetermined rotation speed [Fig. 5 (a), (b)]. In parallel with this,
Guide roller 7R is the distance from the tip of bobbin holder 4L to the rear
Moves to the position together with the frame 3 to the L _2, after this, the bobbin holder 4L is retracted from the normal position to the frame 2L integrally in unison a predetermined distance L ₁ [Figure 6 (a), (b)].
Next, the bobbin holder 4L swings counterclockwise in the drawing around the ball bearing 12 supporting the drive motor 11L as the swing center, and the yarn Y is fitted into the yarn gripping portion 13l at the tip of the bobbin 13L. And a slight bunch winding portion of the yarn Y is formed on the yarn gripping portion 13l [FIGS. 7 (a) and (b)]. As a result, each bobbin holder 4L swings clockwise and returns to its original position parallel to the axis of the mating bobbin holder 4R [Figs. 8 (a) and (b)], and at the same time retracted distance L ₁ Only the frame 2L moves forward and returns to the original steady position [Fig. 9 (a), (b)]. At this time, the bobbin holder 4L
A transfer till is formed on the upper empty bobbin 13L. At the same time when the bobbin holder 4L moves forward to the steady position, the guide roller 7L moves in the direction of arrow A
7R gradually moves in the direction of arrow B so as not to damage the yarn Y, and is positioned and fixed at a predetermined position.
Next, the frame 3 at the center of the device reciprocates in the axial direction of the bobbin 13L between predetermined strokes, and the yarn Y is guided by the guide roller 7
The package is formed on the empty bobbin 13L by traversing by L.

Here, the automatic switching mode when the rotation directions of the bobbin holders 4L and 4R are opposite to each other will be described.

The frame 3 at the center of the device is reciprocally moved in the axial direction of the bobbin 13R by the stepping motor 18, the yarn Y is traversed and traversed by the guide roller 7R, and the traverse stroke increases the winding diameter in the case of the embodiment. Becomes shorter according to. By controlling the rotation speed of the drive motor 11R so that the rotation speed of the guide roller 7R becomes a predetermined value, a pan-shaped package is formed. When the package 5R formed on the bobbin 13R on the bobbin holder 4R reaches a predetermined winding amount, each bobbin holder 4L is simultaneously activated by the inverter 17L, and the bobbin holder 4L reaches a predetermined rotation speed. Next, the guide rollers 7L and 7R that were traversing are stopped at a rear position of a predetermined distance L ₂ from the tip of the bobbin holder 4L as shown in FIGS. 6 (a) and 6 (b), and the bobbin holder 4L is moved by the predetermined distance L. _A bunch winding part is formed on the package 5R at a position retracted from the normal position by ₁ . Also, bobbin holder 4L
Is tilted toward the bobbin holder 4R side during winding by the operation of a fluid pressure cylinder (not shown) [FIGS. 7 (a) and (b)]. By the tilting of the bobbin holder 4L, the thread holding groove 13l of the bobbin 13L holds the yarn Y, and a bunch winding portion is formed on the thread holding groove 13l. Drive inverter 11L for drive motor 11L so that the rotation speed of bobbin holder 4L and the rotation speed of guide roller 7L are at specified values.
The frequency of is controlled. After a slight bunch winding portion is formed on the bobbin 13L, the bobbin holder 4L tilts clockwise and moves forward again by the retracted distance L ₁ [Figs. 8 (a) and 8 (b)]. At this time, a pigtail is formed on the bobbin 13L. Furthermore, the guide roller 7L is indicated by the arrow A.
Direction, the guide roller 7R moves in the direction of arrow B by the operation of the fluid pressure cylinder [Fig. 9 (a),
(B)]. Then, the drive motor 11L is loaded with regenerative braking, and the bobbin holder 4L stops rotating. After that, the package 5R formed in the fully wound state is removed from the bobbin holder 4R, and a new empty bobbin 4R is mounted on the bobbin holder 4R. After that, when the winding amount of the package 5L formed by being wound on the bobbin 13L reaches a predetermined amount, as described above, the bobbin holder 4R is activated and controlled until the rotation speed reaches a predetermined value. The yarn Y is switched with.

Next, an automatic switching mode when the bobbin holders 4L and 4R rotate in the same direction will be described. The case of switching from the bobbin holder 4L to the bobbin holder 4R will be described here.

First, as shown in FIGS. 12 (a) and 12 (b), the bobbin holder 4L
When the package 5L wound and formed on the upper bobbin 13L reaches a predetermined winding amount, all the bobbin holders 4R are simultaneously activated by the inverter 17R and reach a predetermined rotation speed.
The guide rollers 7L and 7R that were traversing stopped at a rear position of a predetermined distance L ₂ from the tip of the bobbin holder 4L as shown in FIGS. 14 (a) and 14 (b), and a bunch winding portion was formed on the package 5L. with the bobbin holders 4R is retracted a predetermined distance L ₃ from the normal position. Bobbin holder 4R is a drive motor
The ball bearing 12, which is a support bearing of 11R, is used as a swing fulcrum to tilt by the operation of a fluid pressure cylinder (not shown) on the bobbin holder 4L side [Figs. Also, bobbin holder 4R
Moves forward in a tilted state by a distance L ₄ and enters between the package 5L wound around the bobbin holder 4L and the yarn Y [No.
16 (a) and (b)], the yarn Y is fitted into the thread gripping groove 13r of the bobbin 13R and gripped and captured. At this time, the thread grip
A slight bunch winding is formed on 13r. As a result, when the bobbin holder 4R tilts counterclockwise and moves forward to return to the original steady position, a pigtail is formed on the bobbin 13R [Figs. 17 (a) and (b)]. At this time, one guide roller 7L moves in the direction of arrow A and the other guide roller 7R moves in the direction of arrow B by the operation of a fluid pressure cylinder (not shown) [Fig. 18 (a), (b)]. Next, the drive motor 11L to be driven is loaded with regenerative braking, and the bobbin holder 4L stops rotating. After this, the package
5L is removed and a new empty bobbin 13L is installed.
After that, when the package 5L of the bobbin holder 4L reaches a predetermined winding amount, the bobbin holder 4R is switched to the bobbin holder 4L as shown in FIGS. 5 to 9 and the bobbin holder 4L.
The bobbin holder 4R is switched to the bobbin holder 4R alternately as shown in FIGS.

Next, the winding speed control of the yarn Y will be described.

The winding speed of the yarn Y being wound on the bobbin 13L is compared with the reference value of the guide roller 7L obtained by sampling, and the bobbin holder 4R is controlled by PID control.
The drive motor power source, that is, the frequency of the inverter 17R is controlled so that the rotation speed of the guide roller 7R becomes a predetermined value.

In the first embodiment, the bobbin holders 4L, 4R
Synchronous motors are used as the motors 11L and 11R for driving the motors, and the number of motors 11L and 11R corresponding to the number of yarns Y is driven by a single inverter 17L or inverter 17R. The number of rotations of the guide rollers 7L and 7R is detected by detecting only one of the four rollers and controlling the inverters 17L and 17R. However, all four rotation speeds of the guide rollers 7L and 7R may be detected and the average value thereof may be used. In addition, the guide roller 7
In order to compensate the rotation loss due to the support bearings, L and 7R are connected to the output shafts of the induction motors 16L and 16R via bearings so that the peripheral speed of each thread winding diameter part of the guide rollers 7L and 7R is almost the winding speed. It is taken into consideration that a large frictional resistance does not occur in the yarn Y which is connected and wound. Also, as mentioned above,
When the guide rollers 7L, 7R are rotationally driven by the drive motors 11L, 11R, a bearing with a small rotational torque such as an air bearing may be used.In this case, the air blowing holes of the air bearings should be installed in the guide rollers 7L, 7R. You may make it assist a rotational force toward the rotation direction. Further, instead of the method of detecting the winding speed of the yarn Y by the guide rollers 7L and 7R, it is possible to employ a tension detector for detecting the tension of the yarn Y. In this case, the guide rollers 7L and 7R merely guide the traveling of the yarn Y. Further, the description has been given of the case where the single synchronous inverters 17L and 17R are used for the four synchronous drive motors 11L and 11R corresponding to the number of the yarns Y, respectively.
Of course, it does not matter if the numbers of L and 11R are used. Although synchronous motors are used for the drive motors 11L and 11R, an induction motor may be used instead of them. In addition, the guide roller 7
Instead of linearly moving L and 7R in the directions of arrows A and B, the guide rollers 7L and 7R may be circularly moved in directions away from each other for the purpose of avoiding contact at the time of intersection.

Regarding the traverse control of the yarn Y, as shown in FIG. 12, the yarn winding diameter is calculated by the winding speed set by the setting device 27 and the frequencies of the inverters 17L, 17R (S ₁ ), and this calculation is performed. The stroke of the package is calculated by the data (S ₂ ) stored in the ROM 23 in the electronic control unit U based on the diameter of the bobbin, and the movement amount between the origin and the origin detected by the stroke and the position sensor 30,
That calculates the number of rotation pulses of the stepping motor 18 (S _3), and inputs it to the coincidence circuit (S _4). The pulse generator (S ₅ ) has a function of transmitting a pulse signal for rotationally driving the stepping motor 18 and changing the pulse signal transmission speed according to the traverse speed set in the setting device 27. The pulse signal transmitted from the pulse generator (S ₅ ) is counted by the counter (S ₆ ), passes through the control gate (S ₇ ) and the drive circuit (S ₈ ) and then the stepping motor.
It is input to 18 and it is driven to rotate. Further, when the number of pulses transmitted from the pulse oscillator (S ₅ ) and passed through the counter (S ₆ ) matches the set number of pulses (movement amount) corresponding to the rotation angle of the stepping motor 18, the control gate ( The output at S ₇ ) is reversed, and the rotation of the stepping motor 18 is reversed, so that the traverse motion is performed by the forward and reverse rotation of the stepping motor 18. Incidentally, instead of the above-described method in which the bobbin diameter is calculated and the traverse stroke is changed, the traverse stroke may be calculated by the integrated value of the number of reciprocations of the guide rollers 7L, 7R. good.

The description of the operation and operation of the second embodiment is the same as that of the first embodiment, and will be omitted.

Further, in each of the first and second embodiments, the structure in which one of the pair of bobbin holders 4L and 4R tilts toward the other side to capture and grasp the yarn Y has been described. By reducing the size of the bobbin holders 4L and 4R, it is possible to design a structure in which the axes of the bobbin holders 4L and 4R are kept parallel to each other and one moves in parallel with the other. Although the stepping motor 18 is used in each of the first and second embodiments, it may be traversed by a servo motor and other motors or a fluid pressure cylinder instead of the stepping motor 18.

(Effects of the Invention) As described above, the yarn winding method and device according to the present invention do not change the yarn guide at the time of switching, so that even in the case of a drawn yarn having a small elongation, yarn unevenness may occur. Or, a situation where the yarn is cut is avoided. Also,
For example, 5000 mm because there is little contact with the yarn guides during winding and switching
It is possible to take up and switch over / min or more.

[Brief description of drawings]

1 to 18 show a first embodiment of a yarn winding method and apparatus according to the present invention. FIG. 1 is a front view, FIG. 2 is a side view, and FIG. 3 (a), b) is a sectional view taken along line X-X in FIG. 1 which shows a tilting mode of the bobbin holder, FIG. 4 is a perspective view showing a yarn guiding mode of a yarn by a suction gun, and FIGS. 5 (a) and 5 (b)- 9 (a) and 9 (b) are bobbin holders.
Plan view showing the operation procedure of automatic switching when the mutual rotation of 4L and 4R is opposite, FIG. 10 is a detailed sectional view of the guide roller,
FIG. 11 is a control circuit diagram of the apparatus, FIG. 12 is a control block diagram of the traverse mechanism, and FIGS. 13 (a), (b) to 18 (a), (b) show rotation of the bobbin holders 4L, 4R. FIGS. 19 and 20 are a front view and a side view of a second embodiment of the present invention, respectively, showing a combination of a plan view and a side view showing an automatic switching operation procedure in the case of the same direction. 1 ... Base, 2L, 2R, 3 ... Frame of device body, 4
L, 4R: bobbin holder, 5L, 5R: package, 7L, 7
R: Guide roller, 8-10 ... Sliding bearing, 11L, 11R ...
… Drive motor, 12 …… Ball bearing, 13L, 13R …… Bobbin, 13
l, 13r …… Slit-shaped thread gripping part, 14,52 …… thread hooking guide, 15L, 15R …… rotation sensor, 16L, 16R …… induction motor, 17L, 17R …… inverter, 18 …… stepping motor , 19 ... Power supply, U ... Electronic control unit, 27 ... Setting device for thread winding speed, 30 ... Position sensor for detecting traverse origin, 31L, 31R ... Electromagnetic switch, 32, 33 ... Timing pulley, 34 …… Timing belt, 35 …… Ball screw shaft, S ₅ …… Pulse oscillator, S ₆ …… Count counter.

Claims (2)

[Claims] 1. A bobbin holder wound on one of a pair of side-by-side bobbin holders rotatably supported by a frame. When the yarn being wound on the bobbin holder is switched to an empty bobbin on the other bobbin holder, the other bobbin holder is axially moved. While moving to one bobbin holder side to bring the yarn gripping portion provided on the empty bobbin close to the yarn traveling path being wound,
A method of winding a yarn, characterized in that the yarn is caught and gripped by the yarn gripping portion, and the yarn is switched and wound. 2. A pair of bobbin holders, which are rotatably arranged side by side on a frame at intervals in the horizontal direction, respectively movable in the axial direction and movable to the other side, and adjacent to the pair of bobbin holders. A pair of yarn guide members that are rotatably supported by the frame at predetermined intervals in the vertical direction, and one of the bobbin holders that has moved between the pair of yarn guide members captures and holds the yarn. A yarn winding device characterized by the above.