JP2001261234A - Traversing device and traversing method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a traversing device capable of traversing a yarn at a high speed and changing the traversing width during traversing in a simple structure. SOLUTION: This traversing device 1 is provided with a traverse guide 4 for guiding the yarn Y, a magnetic shaft 2 having a first magnetized part 9 spirally magnetized in the traverse direction H of the yarn Y, a slider 3 disposed to freely move along the magnetic shaft 2 and having a second magnetized part 15 spirally magnetized opposite to the first magnetized part 9, and a servo motor 5 for driving the magnetic shaft 2 to be rotated. In the traversing device 1, the traverse guide 4 is mounted on the slider 3, and the slider 3 is reciprocated in the traverse direction H by the rotary drive of the magnetic shaft 2.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a traverse device and a traverse method for traversing a yarn by reciprocating a traverse guide.

[0002]

2. Description of the Related Art As a conventional traverse device, there is known a device which reciprocates a traverse guide to traverse (traverse) a yarn. Various types of traverse devices of this type, such as a drum system, a ball screw system, and a linear motor system, have been proposed.

A drum type traverse device is composed of a cylindrical drum having a spiral cam groove, a cam shoe sliding in the cam groove, and a traverse bar connected to the cam shoe, and a traverse guide is provided on the traverse bar. It is a thing. In this traverse device, the traverse bar and the traverse guide are reciprocated by rotating the drum at high speed and converting the rotation of the drum into linear thrust by the cam groove and the cam shoe. The ball screw type traverse device is composed of a ball screw shaft, a number of balls sliding in a spiral groove of the ball screw shaft, and a ball screw slider, and the ball screw slider is provided with a traverse guide. In this traverse device, the slider and the traverse guide are reciprocated by rotating the ball screw shaft at high speed and converting the rotation of the shaft into linear thrust by a large number of balls. The linear motor type traverse device has a center yoke supported by a stator yoke, a core moving along the center yoke,
It is composed of an armature wound many times around a core, a permanent magnet opposed to the armature and fixed to a stator yoke, and provided with a thread guide receiver on the core [Japanese Patent Laid-Open No. Hei 7-13793].
No. 5]. In this traverse device, the core and the thread guide receiver are reciprocated by energizing the armature of the core.

[0004]

In the drum type traverse device, the traverse guide is reciprocated by the cam groove of the drum and the cam shoe, so that the traverse width of the yarn is fixed by the spiral shape of the cam groove of the drum. . Therefore, it is very difficult to change the traverse width of the yarn during the traverse to form packages having various shapes such as a tapered end. In the ball screw type traverse device, it is necessary to secure the traverse width of the yarn by increasing the diameter of the ball screw shaft and lengthening the lead of the spiral groove. Therefore, as the diameter of the ball shaft increases, the weight of the ball screw slider also increases, making it difficult to reciprocate the ball screw slider at a high speed while securing a desired propulsive force. Conversely, if the diameter of the ball screw shaft is reduced, the lead of the spiral groove cannot be lengthened, and the ball screw slider cannot reciprocate with a traverse width. In a linear motor type traverse device, a light shielding plate (linear scale) and a photoelectric detector must be provided along the moving direction of the core in order to reciprocate the core, and it is necessary to supply power to the armature and the photoelectric detector of the core. Therefore, the traverse device itself becomes large and the structure becomes complicated.

An object of the present invention is to provide a traverse device and a traverse method which can traverse a yarn at a high speed with a simple structure and can change a traverse width during the traverse.

[0006]

A traverse device according to the present invention (claim 1) includes a traverse guide for guiding a yarn, a magnetic shaft extending in a traverse direction of the yarn and having a first magnetized portion, The reciprocating body includes a second magnetized portion that is movably arranged along the shaft and faces the first magnetized portion, and a rotation driving unit that drives the magnetic shaft to rotate. In the traverse device, a traverse guide is provided on the reciprocating body, and the magnetic shaft is driven to rotate.
The reciprocating body is reciprocated in the traverse direction. By rotating the magnetic shaft forward and reverse, the first magnetized part is relatively moved helically with respect to the second magnetized part, and the shaft rotation is converted into linear thrust by the magnetic action between the magnetized parts. it can. Then, the reciprocating body is reciprocated in the traverse direction by the linear thrust, and guides and traverses the yarn by the traverse guide. Thereby, in the traverse device, the reciprocating body can be reciprocated by the simple structure of the magnetic shaft, the reciprocating body, and the rotation driving means. Also, the reciprocating body can be reciprocated at a high speed by rotating the magnetic shaft at a high speed by the rotation driving means. Further, by controlling the time for switching the rotation driving means from normal rotation to reverse rotation, or vice versa,
The traverse width can be changed.

A traverse device according to the present invention (Claim 2)
In this case, a guide rod for guiding the reciprocating body along a magnetic shaft is provided, and both ends of the guide rod are elastically supported with respect to a fixed side. When the guide rod is elastically supported on the fixed side, it is possible to absorb a deviation of the guide rod from the magnetic shaft. Thereby, the reciprocating body can be smoothly reciprocated by being guided by the guide rod.

[0008] The traverse device according to the present invention (Claim 3)
In the above, a plurality of sliding bearings that slide along the guide rod are provided side by side in the traveling direction. These are connected by members. For example, the reciprocating body and each sliding bearing are connected only at both ends of the reciprocating body, respectively, and a space can be formed between the connecting members. Thus, the weight of the connecting member can be minimized, and the weight of the guide means for guiding the reciprocating body can be reduced.

A traverse device according to the present invention (Claim 4)
The apparatus includes a rotation amount detecting means for detecting the rotation amount of the magnetic shaft, and a motor control device for controlling the forward / reverse driving of the rotation driving means based on the detection result of the rotation amount detecting means. The traverse operation at an arbitrary reciprocating width and / or reciprocating speed can be realized by controlling the forward / reverse driving of the rotary driving unit while constantly detecting the rotation amount of the magnetic shaft by the motor control unit.

A traverse device according to the present invention (Claim 5)
In this configuration, the motor control device calculates and outputs a command signal to the rotary drive unit based on the forward / reverse drive pattern stored in advance and the detection result of the rotation amount detection unit. If the forward / reverse drive pattern is set in advance, the forward / reverse drive range of the rotary drive means, that is, the reverse position, can be arbitrarily changed according to the elapsed time from the start of winding by the output command signal. . This makes it possible to form a package of a desired shape with a simple configuration, such as a tapered end package in which the traverse range is gradually reduced as the winding becomes thicker, and to vary the traverse turning point periodically or aperiodically. The creeping operation can be performed with a simple configuration.

The traversing method of the present invention (claim 6)
A traverse guide for guiding the yarn, a magnetic shaft extending in the traverse direction of the yarn and having a first magnetized portion, a rotation driving means for driving the magnetic shaft to rotate, and a second garment facing the first magnetized portion A reciprocating body having a magnetic part and a motor control means for controlling the rotation drive of the rotation drive means are used.
In the traverse method, the motor control means controls the forward / reverse rotation of the rotation drive means, and the magnetic action between the first and second magnetized portions causes the magnetic shaft to rotate with the reciprocating body along with the forward / reverse rotation drive of the magnetic shaft. The traverse guide reciprocates within a predetermined range. By rotating the magnetic shaft forward and reverse, the first magnetized portion is spirally moved relative to the second magnetized portion, and the shaft rotation is converted into a linear thrust by a magnetic action between the magnetized portions. Can be converted. Then, the reciprocating body is reciprocated in the traverse direction by the linear thrust, and guides and traverses the yarn by the traverse guide. Thereby, in the traverse device, the reciprocating body can be reciprocated by the simple structure of the magnetic shaft, the reciprocating body, and the rotation driving means. Also,
By rotating the magnetic shaft at high speed by the rotation driving means, the reciprocating body can be reciprocated at high speed. Further, the traverse width can be changed by controlling the time for switching the rotation driving means from normal rotation to reverse rotation or vice versa.

[0012]

DESCRIPTION OF THE PREFERRED EMBODIMENTS A traverse device according to the present invention will be described with reference to FIGS.

The traverse device 1 shown in FIG. 1 and FIG.
The yarn Y is provided in the traveling path and traverses (traverses) the yarn Y. The traversed yarn Y is taken up by a package P that comes into contact with a rotationally driven friction drum D. The traverse device 1 includes a magnetic shaft 2 and a reciprocating body 3 (hereinafter, referred to as a “slider 3”).
, Traverse guide 4, and rotation drive means 5 (hereinafter, referred to as
A servo motor 5), a guide means 6 and a motor control means 8, which are provided on a base member 7 on the fixed side.

The magnetic shaft 2 extends in the traverse direction H of the yarn Y (in the axial direction of the package) and is arranged in parallel with the friction drum D. Both ends of the magnetic shaft 2 are rotatably supported by shaft supports 10 and 11 by bearings 12 (see FIG. 2). Each shaft support 10,
Numerals 11 are attached to the base member 7 at intervals longer than the traverse width L of the yarn Y, and support both ends of the magnetic shaft 2 in a protruding state. The magnetic shaft 2 is shown in FIG.
As shown in the figure, the first magnetized portion 9 is provided at least in a range covering the traverse width. First magnetized part 9
Is formed around the outer periphery of the magnetic shaft 2 between the shaft support members 10 and 11. The first magnetized portion 9 is helically magnetized in the axial direction (traverse direction H) of the magnetic shaft 2 such that the state of the N pole and the S pole is changed by the rotation of the magnetic shaft 2. . The outer periphery of the first magnetized portion 9 is coated with a nonmagnetic material such as ceramic or hard chrome which is excellent in slidability.
Further, the magnetic shaft 2 has a motor magnetized portion 17 constituting a permanent magnet of the servo motor 5 (see FIG. 2). The motor magnetized part 17 is formed at one end of the magnetic shaft 2 protruding from the shaft support 10. The motor magnetized portion 17 is magnetized around the outer periphery of the magnetic shaft 2.

The slider 3 is formed in a cylindrical shape, and is fitted around the outer periphery of the magnetic shaft 2. This slider 3
As shown in FIG. 4, is disposed movably along the magnetic shaft 2 by the sliding bushes 13 and 14. Each of the sliding bushes 13 and 14 is formed of a non-magnetic material (e.g., resin or the like) having excellent slidability, and is inserted into the outer periphery of the magnetic shaft 2 and the inner periphery of the slider 3 to support both ends of the slider 3. are doing. In addition, the slider 3 includes a second magnetized portion 15.
have. The second magnetized portion 15 is provided for each sliding bush 1.
It is formed between 3 and 14 and around the inner circumference of the slider 3. The second magnetized portion 15 is spirally magnetized corresponding to the spiral lead of the first magnetized portion 9. That is,
The first magnetized portion 9 and the second magnetized portion 15 are spirally magnetized so as to have the same lead angle. Also, the second magnetized part 1
5 faces the first magnetized portion 9 with a predetermined gap s by the slider support of the sliding bushes 13 and 14 (see FIG. 4). The slider 3 is located at a position where different magnetic poles face each other due to magnetic attraction between the N pole (or S pole) of the second magnetized portion 15 and the S pole (or N pole) of the first magnetized portion 9. Stopped stably. Also, the slider 3
By rotating the magnetic shaft 2 forward and reverse to move the N and S poles of the first magnetized portion 9, the yarn Y is reciprocated in the traverse direction H of the yarn Y by the magnetic action with the second magnetized portion 15. You.

The traverse guide 4 protrudes toward the friction drum D and is fixed to the slider 3. A guide groove 1 for guiding the yarn Y is provided at the tip of the traverse guide 4.
6 are formed. The traverse guide 4 is reciprocated with a traverse width L as the slider 3 reciprocates, and traverses the yarn Y engaged with the guide groove 16.

The servo motor 5 is provided on the shaft support 10 so as to be directly connected to one end of the magnetic shaft 2.
In addition, the servomotor 5 has a configuration in which one end of the magnetic shaft 2 is used as a rotation axis, and a coil 18 is arranged around a motor magnetized portion 17 of the shaft 2. This servo motor 5
Drives the magnetic shaft 2 to rotate forward and reverse around its axis.

The guide means 6 comprises two guide rods 2
5, a plurality of sliding bearings 26 and two connecting members 27. Each guide rod 25 is connected to the magnetic shaft 2
And extend in the traverse direction H of the yarn Y. As shown in FIG. 3, both ends of each of the guide rods 25 are connected to rod supporting members 29, 30 by elastic members 28.
It is elastically supported. The elastic member 28 uses an O-ring made of rubber or the like. Each rod support 29, 30
Is disposed between the shaft support members 10 and 11. These rod support members 29 and 30 are provided on the base member 7 at intervals longer than the traverse width L of the yarn Y. Each of the rod supporting members 29 and 30 rotatably penetrates both ends of the magnetic shaft 2. A plurality of sliding bearings 26 are provided for each guide rod 25 at intervals in the running direction. Each guide rod 2
The fifth sliding bearing 26 is slidably fitted on the outer periphery of the guide rod 25 and is arranged in parallel with both ends of the slider 3 in the running direction. The plurality of sliding bearings 26 spaced apart in the running direction are connected by a cylindrical member that covers the periphery of the guide rod 25. The connecting members 27 are arranged at both ends in the running direction of the slider 3 with a space therebetween. Each connecting member 27 is mounted on the outer periphery of the slider 3 and the outer periphery of each sliding bearing 26, and connects the slider 3 and each sliding bearing 26. The guide means 6 slides each sliding bearing 26 along each guide rod 25 as the slider 3 reciprocates, thereby keeping the slider 3 in a predetermined posture along the magnetic shaft 2. invite. In addition, the guide means 6 elastically supports each guide rod 25 with the elastic member 28, thereby absorbing an axial displacement of each guide rod 25 with respect to the magnetic shaft 2 by elastic deformation of the elastic member 28.

The motor control means 8 controls the driving of the servo motor 5, and is provided on the base substrate 7 as a motor control board. As shown in FIG. 5, the motor control means 8 includes a rotation amount detection means 35 (hereinafter referred to as an “encoder 3”).
5 "), the motor control device 36 and the drive circuit 37
It has. The encoder 35 is provided on the other end of the magnetic shaft 2 at a position opposite to the servo motor 5 (see FIG. 1). The encoder 35 outputs a detection signal (pulse signal) corresponding to the rotation amount of the magnetic shaft 2 to the motor control device 36. The motor control device 36 measures the pulse signal from the encoder 35,
The instantaneous position of the slider 3 is detected. Then, the motor control device 36 controls the servo motor 5 based on the detection result of the instantaneous position of the slider 3 and the forward / reverse drive pattern stored in advance.
, And the rotational speed and forward / reverse drive of the servomotor 5 are time-controlled by the command signal.
The drive circuit 37 outputs a drive signal to the servo motor 5 in response to a command signal from the motor control device 36, and drives the servo motor 5 to rotate. As shown in FIG. 6, the forward / reverse drive pattern is for timely controlling the rotational speed of the servo motor 5 and forward / reverse drive. The forward / reverse drive pattern is not limited to the one shown in FIG.

Next, a traverse method by the traverse device 1 will be described with reference to FIGS. The traverse method is described for the case where the yarn Y is wound around the tapered end package P, and the slider 3 and the traverse guide 4
Is located at a traverse turning point a having a traverse width L (see FIG. 2).

The yarn Y is wound on the friction drum D
At the same time as the traverse device 1 is operated. And the operation of the traverse device 1
The operation is started by outputting a command signal from the motor control device 36 to the drive circuit 36 and driving the servo motor 5 to rotate forward. The motor control device 36 includes an encoder 35
Then, the rotation of the servo motor 5 is rapidly increased to the high-speed rotation speed Pm within a few milliseconds t1 (ms) from the start of the drive by counting the pulse signal from [1]. By driving the servo motor 5, the magnetic shaft 2 is also driven to rotate forward at a high speed, and the first magnetized part 9 is relatively moved in a spiral manner with respect to the second magnetized part 15. Thereby, the high-speed rotation of the magnetic shaft 2 is converted into a linear thrust (linear motion) according to the rotation speed by the magnetic action (magnetic attraction, magnetic repulsion) between the respective magnetized portions 9 and 15. Then, the slider 3 is rapidly accelerated by the linear thrust and moves at a high speed from the traverse turning point a to the turning point b. This allows
The traverse guide 4 is also moved at a high speed, and traverses the yarn Y at a high speed from the traverse turning point a to the turning point b.

At this time, the slider 3 is moved at a high speed by the sliding bushes 13 and 14 while maintaining the gap s between the magnetized portions 9 and 15. Maintaining this gap s can stabilize the magnetic action between the magnetized portions 9 and 15, suppress the jumping rope phenomenon, and smoothly move the slider 3 at high speed. The jump rope phenomenon is a phenomenon in which the magnetic shaft 2 is attracted to the slider 3 due to instability of the magnetic action, thereby hindering the smooth high-speed movement of the slider 3. Further, since the slider 3 slides the sliding bushes 13 and 14 against the coating of the first magnetized portion 9 having excellent slidability, the slider 3 does not twist due to the bending of the magnetic shaft 2 and does not rotate. It moves at high speed with small inertia. Further, the slider 3 is smoothly moved at a high speed while being guided along each guide rod 25 by each connecting member 27 and sliding bearing 26. Accordingly, the traverse guide 4 is also smoothly moved at a high speed, and the yarn Y can be traversed at a high speed while being guided stably.

When the movement of the slider 3 is started, the motor control device 36 measures the pulse signal from the encoder 35, and after the elapse of several milliseconds t1, the normal rotation of the servo motor 5 is rotated at a high speed. The speed is controlled to Pm (# 2 in FIG. 6). Thus, the slider 3 is moved at a high speed to the traverse turning point b at a constant speed corresponding to the rotation speed Pm of the servo motor 5.

When the slider 3 is moved to the vicinity of the traverse turning point b, the motor control device 36 measures the pulse signal, and the time t after the millisecond t1 is reached.
After a lapse of 2 (ms), the forward rotation of the servo motor 5 is rapidly reduced in several milliseconds t3 (ms) [# 3 in FIG. 6]. Thus, the slider 3 is moved from the vicinity of the traverse turning point b to the turning point b while being rapidly decelerated.

When the slider 3 reaches the turning point b, the motor control device 36 measures the pulse signal to drive the servo motor 5 to rotate in the reverse direction after the elapse of several milliseconds t3. At the same time, the motor control device 36
The reverse rotation of the servomotor 5 is rapidly increased to a high rotation speed Pm at several milliseconds t4 [# 4 in FIG. 6]. As a result, the slider 3 is turned back at the traverse turning point b, and is moved at a high speed to the turning point a by a sudden acceleration. Then, the traverse guide 4 is also folded back at the traverse folding point b, and traverses the yarn Y to the folding point a.

When the slider 3 returns, the motor control device 36 controls the reverse rotation of the servo motor 5 to a high rotation speed Pm after the elapse of the above-mentioned milliseconds t4 by measuring a pulse signal [FIG. $ 5]. Thus, the slider 3 is moved at a high speed to the traverse turning point a at a constant speed corresponding to the rotation speed Pm of the servo motor 5.

As described above, in the motor control device 36, by controlling the forward / reverse rotation drive and the rotation speed of the servo motor 5, the slider 3 and the traverse guide 4 are reciprocated at a high speed to traverse the yarn Y at a high speed. Things. Then, the time T for switching the servo motor 5 from forward rotation to reverse rotation or vice versa [T = t1 + t2 + t in FIG.
3] can be gradually reduced from the start of winding of the yarn Y, so that the traverse width L can also be gradually reduced to L1 to Ln. That is, the motor control device 36 controls the magnetic shaft 2
By controlling the forward / reverse drive of the servo motor 5 while always detecting the rotation amount of the slider 3, the slider 3 and the traverse guide 4 can be traversed at an arbitrary reciprocating width and / or speed. As a result, a taper end package P in which the traverse width L is gradually reduced as the winding becomes thicker is formed.

In the traverse device 1 of the present invention, the slider 3 can be reciprocated by driving the magnetic shaft 2 to rotate forward and reverse at high speed by the servo motor 5, whereby the yarn Y can be traversed at high speed. The traverse of the yarn Y can be performed by a simple structure including the magnetic shaft 2, the slider 3, and the servomotor 5. Further, by detecting the rotation amount of the servo motor 5 by the encoder 35, the slider 3 at each of the traverse turning points a and b is detected.
Can be controlled, so that it is not necessary to provide a linear scale or a photoelectric detector in the moving direction of the slider 3.
Furthermore, if a forward / reverse drive pattern is set in the motor control device 36 in advance, the forward / reverse drive range of the servo motor 5, ie, the slider 3, the traverse The turning points a and b of the guide 4 can be changed arbitrarily. Thus, the creeping operation of periodically or aperiodically changing the traverse width L causes the traverse turning points a and b to be changed.
In this case, the appearance of the ear height can be prevented, and a package having a good unwinding property can be obtained.

Further, the slider 3 can be smoothly reciprocated by being guided by the guide means 6. In particular, each guide rod 25 is connected to each rod support 29, 30.
When the slider 3 is elastically supported with respect to the magnetic shaft 2, it can absorb the axial deviation of each guide rod 25 with respect to the magnetic shaft 2.
Can be moved smoothly. And the magnetic shaft 2
Also, in assembling the guide rods 25, the magnetic shaft 2 and the respective guide rods 25 can be arranged in parallel without requiring machining accuracy or assembling accuracy of the magnetic shaft 2 or the respective guide rods 25. Further, by arranging the guide rods 25 so as to be juxtaposed on both sides of the magnetic shaft 2, the slider 3 can be smoothly reciprocated.

The means for guiding the slider 3 is constituted by each guide rod 25, each slide bearing 26 and each connecting member 27, and the slider 3 and each guide rod 25
Are connected to each other at the minimum areas which are both ends in the running direction of the slider 3. Thereby, the slider 3
The weight of the guide means 6 for guiding the slider 3 can be reduced, and the slider 3 can be smoothly reciprocated.

In the traverse device 1 of the present invention, the permanent magnets constituting the servo motor 5 are also used for the motor magnetized portion 17 of the magnetic shaft 2, so that no coupling or the like for connecting to the magnetic shaft 2 is required. In addition to saving space, the inertia of a rotating member such as the magnetic shaft 2 can be reduced. Further, the servo motor 5 and the encoder 35 are opposite to each other on the magnetic shaft 2.
When applied to a yarn winding device having a plurality of winding units arranged side by side, the yarn winding device does not protrude largely in either the left or right direction with the traverse width L as a center. Can be easily applied. further,
By coating the first magnetized portion 9 of the magnetic shaft 2 with ceramic or hard chrome having excellent slidability, twisting of the slider 3 due to bending of the magnetic shaft 2 can be eliminated, thereby reducing rotation inertia. Make it smaller
High-speed traverse becomes possible. And the magnetic shaft 2
Even if the diameter of the slider 3 is reduced, the slider 3 can be smoothly moved at a high speed. In addition, since the sliding bushes 13 and 14 that slide along the outer peripheral surface of the magnetic shaft 9 are fixed in the slider 3, when worn, it can be dealt with by replacing only the sliding bushes 13 and 14.

Next, a modified example of the traverse device 1 is shown in FIG.
This will be described with reference to FIG. Traverse device 1 shown in FIG.
Is provided with a first magnetic means 51 and a second magnetic means 52 in addition to those shown in FIGS. 1 and 2. In FIGS. 7 to 10, the same reference numerals as those in FIGS. 1 to 6 denote the same members. The description is omitted.

In FIG. 7, the first magnetic means 51 is constituted by two permanent magnets 53 and 54. Each permanent magnet 5
The rods 3 and 54 are provided toward the slider reciprocating range side (inside) of the rod supporting members 29 and 30 so as to face both ends of the slider 3 in the traveling direction. That is, the fixed permanent magnets 53 and 54 are provided slightly outside the traverse range end. In the example shown in FIG. 7, the rod support members 29 and 30 that support the guide rod 25 are shaft support members 10 and 1 that rotatably support the magnetic shaft 2.
1, the permanent magnets 53, 54 are provided on the rod supports 29, 30, but the shaft supports 10, 1
If 1 is inside rod supports 29, 30, each permanent magnet 53, 54 can also be provided on shaft supports 10, 11. The second magnetic means 52 includes two permanent magnets 5
5, 56. Each of the permanent magnets 55, 56
The slider 3 is provided at both ends in the running direction of the slider 3 so as to face the respective permanent magnets 53 and 54 of the first magnetic means 51. Further, each of the permanent magnets 53, 54 of the first magnetic means 51
Has a different magnetic pole with respect to each of the permanent magnets 55 and 56 of the second magnetic means 52.

In the traverse device 1 shown in FIG.
Is moved to the vicinity of the traverse turning point b, the slider 3 can be rapidly decelerated by the magnetic repulsion of the permanent magnets 54 and 56. At the traverse turning point a, the slider 3 can be rapidly decelerated by the magnetic repulsion of the permanent magnets 53 and 55. Thereby, the slider 3
Can be prevented from moving beyond the traverse width L.
Further, after the return of the slider 3, the acceleration of the slider 3 can be accelerated, and the reversal load of the forward and reverse rotation of the servo motor 5 can be reduced. Therefore, it is possible to smoothly turn the slider 3 back, so that a high-quality package can be formed.

The first magnetic means 51 shown in FIG. 7 may be constituted by two electromagnets 53 and 54. Each electromagnet 5
The excitation of 3, 54 is controlled by the motor control device 36 shown in FIG. Then, as shown in FIG. 9, the motor control device 36 excites the electromagnet 54 on the traverse turning point b side several milliseconds t3 before the traverse turning. The excitation timing of the electromagnets 53 and 54 can be detected based on the detection signal of the encoder 35. As a result, the slider 3, which is moved to the turning point b side at a high speed, is moved by the magnetic means 51,
Due to the magnetic repulsion of 52, the vehicle is decelerated and prevented from moving beyond the traverse width L. Further, after the slider 3 is turned back, the acceleration of the slider 3 can be accelerated by the magnetic repulsive force of each of the magnetic means 51 and 52, so that the reversing load in the forward / reverse rotation of the servo motor 5 can be reduced. At the traverse turning point a, the slider 3 can be decelerated and turned back by exciting the electromagnet 53. Further, after a lapse of several milliseconds t3 of the traverse turning back, the motor control device 36
The excitation of the magnets 3 and 54 is eliminated to eliminate the magnetic influence of the magnetic means 51 and 52. Thus, the electromagnets 53,
When the slider 54 is used, the repulsive magnetic force on the slider 3 at the traverse end can be applied only for a necessary period. Further, since it is not necessary to excite the electromagnets 53 and 54 at the same time, the motor control device 36 selectively switches the electromagnets 53 and 54 from the common power source via the switching circuit 61.
Is excited. As the excitation method for the electromagnets 53 and 54, as shown in FIG. 8, the magnetic force of each of the electromagnets 53 and 54 is instantaneously increased, and as shown in FIG.
Those that gradually increase the magnetic force of 3,54 can be adopted. In the excitation method shown in FIG. 9, since the slider 3 can be gradually decelerated, a high-speed traverse can be realized.
As described above, when the electromagnets 53 and 54 are used, the repulsive magnetic force can be controlled according to the position of the slider 3 based on the detection signal of the encoder 35.

The traverse device 1 according to the present invention is not limited to those shown in FIGS. 1 to 10, and may take the following forms, for example. (1) As shown in FIG. 11, the slider 3 is configured to be slidable on the magnetic shaft 2 by interposing an elastic member 60 made of rubber or the like between the sliding bushes 13 and 14, as shown in FIG. Can be adopted. Thereby, the processing error and the like can be absorbed by the elastic deformation of the elastic member 60 without increasing the processing accuracy and the assembly accuracy of the magnetic shaft 2, the slider 3, and the sliding bushes 13 and 14. Therefore, the slider 3 is
The magnetic shaft 2 can be assembled by a simple operation. (2) A configuration in which the guide rod 25 is disposed above or below the magnetic shaft 2 can be employed. For guiding the slider 3, it is preferable to arrange the guide rods 25 above and below the magnetic shaft 2. However, if the slider 3 can be guided, only one guide rod is arranged, so that the guide means 6 The weight can be reduced. (3) The base material 7 is preferably made of aluminum having good heat dissipation. Thereby, the cooling operation of the motor control board and the like of the motor control means 8 can be promoted, the influence of heat on each member can be suppressed, and the smooth reciprocation of the slider 3 can be maintained. Also, as shown in FIG. 1, the traverse device 1 can be downsized by providing the magnetic shaft 2 and the servomotor 5 on one surface of the base member 7 and providing the motor control means 8 on the other surface. (4) A hole is formed in each connecting member 27 of the guide means 6 for inserting the slider 3 and each sliding bearing 26, and the slider 3 and each sliding bearing 26 are connected by the respective holes. The weight of the means 6 can be reduced. (5) The weight of each sliding bearing 26 can be reduced by forming it from a resin or the like having excellent slidability. (6) By guiding the slider 3 with the guide rods 25, a configuration that is non-contact with the magnetic shaft 2 can be adopted without disposing the sliding bushes 13 and 14. Thereby, the sliding resistance between the slider 3 and the magnetic shaft 2 can be eliminated, and the traverse can be performed at high speed. (7) A configuration in which a plurality of sliders 3 are arranged on the magnetic shaft 2 can also be adopted. (8) As the slider 3, each sliding bush 13, 14
Can be directly inserted into the magnetic shaft 2 without disposition. At this time, at least one of the inner circumference of the slider 3 and the outer circumference of the first magnetized portion 9 is coated with ceramic or hard chrome having excellent slidability. (9) The first magnetized portion 9 has a structure in which the N pole and the S pole are respectively spirally continuous over the entire traverse range, but has a non-magnetized portion at an intermediate position and the first magnetized portion. The part 9 may be configured to be divided on the way. For example, a plurality of non-magnetized portions may be provided in the middle, and the first magnetized portion 9 may be provided intermittently along the axial direction of the magnetic shaft 9. (10) The magnetic force between the first magnetized portion 9 and the second magnetized portion 15 can be made different depending on the axial position of the magnetic shaft 2. For example, the magnetic force can be reduced at the center of the traverse where the required torque is small, and can be increased near the traverse turning points a and b where a large torque is required to turn the slider 3. this is,
In the first magnetized portion 9, a method of using different types of magnetic materials at the center of the traverse and the traverse turning points a and b, or a divided portion (non-magnetized portion) of the first magnetized portion 9 is provided at the center of the traverse. A method is conceivable.

[0037]

According to the traverse device and the traverse method of the present invention, the reciprocating body can be reciprocated by rotating the magnetic shaft at high speed in the forward and reverse directions by the rotary driving means, and the yarn can be traversed at high speed. The yarn can be traversed by a simple structure including a magnetic shaft, a reciprocating body, and a rotation drive unit. Further, the traverse width can be changed by controlling the forward / reverse rotation drive of the rotation drive means. This makes it possible to form packages of various shapes such as a tapered end. By periodically or aperiodically varying the traverse width, a creeping operation can be performed to prevent the appearance of ear height at the traverse turning point, and it is also possible to obtain a package having a good unwinding property. It is.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a traverse device.

FIG. 2 is a view taken along the line AA of FIG. 1;

FIG. 3 is a view taken in the direction of arrows BB in FIG. 1;

FIG. 4 is an enlarged sectional view of a main part showing a relationship between a magnetic shaft and a slider in the traverse device of FIG. 1;

FIG. 5 is a schematic diagram showing motor control means of the traverse device of FIG. 1;

FIG. 6 is a graph showing the operation of the traverse device of FIG. 1;

FIG. 7 is a view showing a modification of the traverse device.

FIG. 8 is a schematic diagram showing motor control means of the traverse device of FIG. 7;

FIG. 9 is a graph showing the operation of the traverse device of FIG. 7;

FIG. 10 is a graph showing another operation of the traverse device of FIG. 7;

FIG. 11 is an enlarged view of a main part showing a modification of the slider of the traverse device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Traverse device 2 Magnetic shaft 3 Slider (reciprocating body) 4 Traverse guide 5 Servo motor (rotation drive means) 6 Guide means 8 Motor control means 9 First magnetized part 15 Second magnetized part 25 Guide rod 26 Slide bearing 27 Connecting member 35 Encoder (rotation amount detecting means) 36 Motor controller H Traverse direction Y Yarn

Claims (6)

[Claims] 1. A traverse device for guiding and traversing a yarn by a traverse guide, wherein the magnetic shaft extends in the traverse direction of the yarn and has a first magnetized portion, and is movable along the magnetic shaft. Placed in
A reciprocating body having a second magnetized portion facing the first magnetized portion, and a rotation drive unit for rotatingly driving the magnetic shaft, wherein the traverse guide is provided on the reciprocating body,
A traverse device, wherein the reciprocating body is reciprocated in the traverse direction by rotating the magnetic shaft. 2. The traverse device according to claim 1, wherein a guide rod for guiding the reciprocating member along the magnetic shaft is provided, and both ends of the guide rod are elastically supported with respect to a fixed side. . 3. A plurality of sliding bearings that slide along the guide rod are provided side by side in the running direction, and each of the sliding bearings and both ends of the reciprocating body in the running direction have an interval in the running direction. The traverse device according to claim 2, wherein the traverse device is connected by a plurality of connecting members. 4. A motor control device comprising: a rotation amount detecting means for detecting a rotation amount of the magnetic shaft; and a motor control device for controlling forward and reverse driving of the rotation driving means based on a detection result of the rotation amount detecting means. The traverse device according to any one of claims 1 to 1, characterized in that: 5. The motor control device according to claim 1, wherein the motor control device calculates and outputs a command signal to the rotation drive unit based on a forward / reverse drive pattern stored in advance and a detection result of the rotation amount detection unit. Item 5. A traverse device according to item 4. 6. A traverse method for guiding and traversing a yarn by a traverse guide, wherein the magnetic shaft extends in the traverse direction of the yarn and has a first magnetized portion, and a rotation for driving the magnetic shaft to rotate. A driving unit, a reciprocating body having a second magnetized part facing the first magnetized part, and a motor control means for controlling the rotation drive of the rotation drive means, wherein the motor drive means controls the rotation drive. Means for controlling the forward and reverse rotation of the means,
A traverse method comprising: reciprocating the traverse guide in a predetermined range together with the reciprocating body in accordance with forward and reverse rotation of the magnetic shaft by a magnetic action between the magnetized portions.