JP2002187674A - Traversing method and device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a traversing device allowing easy change of the turning position without using any complicated mechanism (easy to manage with different taper end package) and capable of achieving a high speed traversing operation without causing a motor to make rotations in the normal and reverse directions. SOLUTION: The invention comprises a plurality of yarn feeding members 2 installed in line in the yarn Y traversing direction in such an arrangement that they can advance and retreat between the working position and non- working position, piezo elements 3 to advance and retreat the yarn feeding members 2 individually between the two positions, and a voltage impression control part 4 equipped with a voltage impression changeover switch part 41 and voltage impression changeover control means 42 for generation strains by impressing voltages on the piezo elements 3, wherein no member moving in the traversing direction is required because the yarn feeding members 2 touch the yarns Y directly to feed them.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a traverse device and a traverse method capable of easily changing a turn position in a yarn traverse (easily adapting to a tapered end package) and capable of increasing the speed of traverse.

[0002]

2. Description of the Related Art Conventionally, in the vicinity of a winding package,
Various methods are known as a traverse device that reciprocates a traveling yarn in the axial direction of a winding package. Among them, as a first method of traversing the yarn by a spiral groove formed on the outer periphery of a cylindrical drum, a rotating drum having a spiral groove formed on the outer periphery comes into contact with a package being wound, and this rotating drum is moved. There is a groove drum type traverse device that traverses (traverses) a yarn engaged with a spiral groove in an axial direction while rotating in one direction.

[0003] As another method, there is provided a cylindrical cam having a spiral groove formed on the outer periphery thereof, and a groove cam type in which a shoe engaging with the spiral groove is traversed in the axial direction while rotating the cylindrical cam in one direction. There is a traverse device. In this device, the traverse guide engaging with the yarn reciprocates with the shoe to traverse the yarn.

[0004]

In the above first method,
The turn position of the traversed yarn is regulated by a spiral shape, and the turn position cannot be changed with the progress of winding. Therefore, there is a problem that it is not easy to cope with tapered end winding in which the traverse range is gradually reduced as the winding becomes thicker.

[0005] Even in the above-mentioned other method, the turn position of the shoe running in the spiral groove cannot be changed. Therefore, when a tapered end package is formed, a complicated structure for changing the positional relationship between the shoe and the traverse guide is required. A special mechanism is required. Therefore, the size of the device is increased due to the complicated mechanism, and the increase in size of the device has been a problem in increasing the speed of the traverse. Furthermore, in this method, it is necessary to consider the durability of the shoe because the shoe moves at high speed.

As a method different from the first and other methods, a reciprocating member (an endless belt or the like) having a traverse guide reciprocated by an electric motor (a stepping motor or the like) reciprocates. A traversing device of the type is known. This method has the advantage that the turn position can be changed only by controlling the electric motor. However, since the electric motor is rotated forward and backward, the yarn speed greatly decreases near the turn position, and the ear height (in the winding package, Phenomenon where the portion corresponding to the traverse end rises in the outer peripheral direction)
There is a problem that it is easy to become. Also, like other methods,
It is necessary to rapidly accelerate and decelerate the electric motor near the turn position, and there is a problem that it is difficult to speed up the traverse.

As a traverse device not using the shoe, there is, for example, a yarn traverse device described in Japanese Utility Model Laid-Open No. 27820/1994. According to the publication, this traverse device supports a roller rotatably at a base of a traverse guide provided reciprocally in a traverse direction, and a plurality of pressing members are juxtaposed so as to be able to protrude and retract over the entire locus of the roller. Further, it is described that a driving means for driving the traverse guide by pressing the rollers by sequentially projecting the pressing members located on the rear side in the roller traveling direction is provided.

However, in the above traverse device,
Since the turn position of the traverse is restricted to a predetermined position, there is a problem that it is not easy to cope with the above-mentioned formation of the tapered end package.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems, and can easily change a turn position without using a complicated mechanism (easy to cope with a tapered end package), and perform forward and reverse rotation of an electric motor. It is an object of the present invention to provide a traverse device capable of achieving a high traverse speed without the need.

[0010]

In order to achieve the above object, the invention according to claim 1 is provided in parallel with the traversing direction of the yarn, and the traverse direction between the working position and the non-working position in contact with the yarn. A plurality of thread feed members capable of moving forward and backward in a direction perpendicular to the plurality of piezoelectric actuators, a plurality of piezoelectric actuators for individually driving the respective yarn feed members forward and backward between the working position and the non-working position, And control means for switching the drive of the actuator, wherein the traverse is performed by transferring the yarn between the yarn feeding members while sequentially moving the predetermined yarn feeding members to the operation position. According to the present invention, electrical control for individually supplying drive power to the piezoelectric actuators in a predetermined order by the control means can be performed, and the power supply to the piezoelectric actuators causes distortion of the piezoelectric actuators, and this change is utilized. As a result, the yarn feeding member advances and retracts, and the yarn can be sent in the traverse direction at a high speed. The desired traverse width can be changed by changing the timing of power supply to the actuator, that is, the timing of advance and retreat of the yarn feeding member.

According to a second aspect of the present invention, there is provided a switch unit for individually switching the supply of driving power to each piezoelectric actuator, and the control means controls the switch unit so that each piezoelectric actuator is driven in a predetermined order. And a switching signal is output to the switch. According to this invention, the individual advance and retreat operations of the yarn feeding member can be performed at high speed only by the control means outputting the switching signal to the switch section in a predetermined order.

The invention according to a third aspect is characterized in that the piezoelectric actuator is constituted by a piezo element. According to the present invention, since the piezoelectric element is used as the piezoelectric actuator, a digital O / O switching is performed by switching ON / OFF of a voltage application to the piezoelectric element.
N / OFF control can be performed at high speed.

According to a fourth aspect of the present invention, the yarn feeding member includes an inclined portion, and when the yarn feed member advances from the non-operating position to the operating position, the yarn is sent in the traverse direction along the inclined portion. According to the present invention, the yarn can be fed in the traverse direction only by causing the yarn feeding member to advance to the operation position while causing the yarn to follow the inclined portion.

According to a fifth aspect of the present invention, the inclined portion is formed on a distal end surface of the yarn feeding member, and is inclined on both sides from a center of the distal end surface toward an end in the traverse direction. I have. In the present invention, since the inclined portion is inclined to both sides in the traverse direction from the center of the distal end surface, an inclined portion having a different inclination direction is formed. The part can be used for the outward movement of the traverse, and the other inclined part of the yarn feeding member can be used for the return movement of the traverse. Therefore, it is not necessary to separately provide the yarn feed members for the forward and return paths of the yarn traverse.

According to a sixth aspect of the present invention, there is provided a plurality of yarn feeders which are arranged side by side in the traverse direction of the yarn and which can advance and retreat in a direction orthogonal to the traverse direction between an operation position and a non-operation position in contact with the yarn. By switching the supply of driving power to the plurality of piezoelectric actuators attached to the members in accordance with a predetermined order, the yarn feeding members are individually advanced to the operation position, and the yarns are sequentially delivered to the adjacent yarn feeding members. It is characterized by performing a traverse. According to the present invention, it is possible to perform electrical control for individually supplying driving power to the piezoelectric actuator in accordance with a predetermined order by the control means, distorting the piezoelectric actuator by supplying power to the piezoelectric actuator, and utilizing this distortion. If the yarn feeding member advances and retracts, high-speed yarn feeding can be performed.
Further, the desired traverse width can be changed by changing the power supply timing to the actuator, that is, the advance / retreat timing of the yarn feeding member.

According to a seventh aspect of the present invention, the yarn is formed along the inclined portion formed on the distal end surface of the yarn feeding member and inclined on both sides from the center of the distal end surface toward the end in the traverse direction. It is characterized in that the yarn is sent in the traverse direction. According to the present invention, the yarn can be fed in the traverse direction only by the advancing operation to the operation position, and the inclined portions are inclined to both sides toward the traverse direction end, so that the inclination directions are different. An inclined portion is formed. Therefore, one inclined portion of one yarn feed member can be used for the forward path of the traverse, and the inclined portion of the other yarn feed member can be used for the return path of the traverse.

[0017]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below with reference to the drawings, but the present invention is not limited to the embodiments unless it departs from the gist of the present invention.

1 and 2 are a plan view and a side view showing a traverse device 1 according to an embodiment of the present invention. FIG. 3 is an explanatory diagram for explaining the arrangement of the yarn feeding member 2 in FIG. FIG. 4 is a view showing the yarn feeding operation of the yarn feeding member 2, and FIG.
Is the yarn feeding member 2 between (b) and (c) of FIG.
It is a figure showing operation of A thru 2E. FIG. 6 shows the yarn feeder 2
It is a figure showing other thread feed operation. FIG. 7 shows the yarn feeding members 2A to 2E between FIGS. 6B and 6C.
FIG.

P shown in FIGS. 1 and 2 is a package formed by winding a yarn by an appropriate driving means D such as a spindle drive or a drum drive, and 1 is a traverse device of the present invention. The traverse device 1 is arranged on the downstream side of the yarn Y traveling path of the package P.

The traverse device 1 includes a plurality of yarn feed members 2 arranged in parallel in the traverse direction of the yarn Y, a piezo element 3 constituting a piezoelectric actuator attached to the yarn feed member 2, and a voltage as a switch unit. The voltage application switching unit 41 includes a voltage application control unit 4 including a voltage application switching control unit 42 as a control unit, and a power supply 5 that is a source of driving power (voltage) supplied to the piezo element 3. .

The shape of the yarn feeding member 2 is, for example, as shown in FIG.
As shown in the above figure, the distal end portion 21a is located substantially at the center of the distal end surface (the surface on the side in contact with the yarn Y) like the yarn feed members 2a to 2f arranged side by side along the traverse direction (the horizontal direction in FIG.
To 21f are formed, and inclined portions 23a to 23f, 24a to 24f that are linearly inclined from both sides of the tip portions 21a to 21f toward the traverse direction end are formed. The inclined portions 23a to 23f, 24a to 24f
Have different inclination directions from each other, and for example, the tip portions 21a,
The center line (indicated by a dashed line) passing through 21b is symmetrical with respect to the axis of symmetry (the same applies to the yarn feeding members 2c to 2f). In this case, the inclined portions 23a to 23a
f, 24a to 24f are formed linearly, but may be arcuate. 25a to 25f, 2
6a to 26f are side walls of the yarn feeding members 2a to 2f.

Further, as shown in the upper part of FIG. 3, the arrangement of the respective yarn feed members 2 is, for example, the tip end 2 of one yarn feed member 2a.
1a is larger than the side wall 25b of the adjacent yarn feeding member 2b.
It is located on the tip end 21b side of the yarn feeding member 2b in the traverse direction (the left-right direction in FIG. 3), that is, on the left side in the traverse direction. Similarly, the tip portion 21b of the yarn feeding member 2b
Are located on the leading end 21c side of the yarn feed member 2c, that is, on the left side in the traverse direction with respect to the side wall 25c of the adjacent yarn feed member 2c, and all the yarn feed members 2a to 2f
Are arranged in such a positional relationship. Further, for example, the distal end 21b of one yarn feeder 2b is located on the distal end 21a side of the yarn feeder 2a in the traverse direction, that is, on the right side in the traverse direction, with respect to the side wall 26a of the adjacent yarn feeder 2a. Similarly, the yarn feed member 2c
The distal end portion 21c is provided on the side wall 26b of the adjacent yarn feeding member 2b.
Rather, it is located closer to the distal end 21b of the yarn feeder 2b in the traverse direction, that is, on the right side, and all the yarn feeders 2a to 2f are arranged in such a positional relationship. In other words, as shown in the figure, for example, the distance in the traverse direction between the leading end 21a of two adjacent yarn feeding members 2a and the leading end 21b of the yarn feeding member 2b is equal to the traverse distance of the yarn feeding member 2a (2b). Of the width in the traverse direction (the tip 21a and the side wall 26a in the traverse direction).
(Or the distance between the tip 21b and the side wall 25b). This arrangement is the same between the yarn feed members 2b and 2c, the yarn feed members 2c and 2d, the yarn feed members 2d and 2e, and the yarn feed members 2e and 2f.

Further, in order to prevent the yarn feed members 2a to 2f from coming into contact with each other, FIG.
As shown in the figure below, the yarn feeder 2a
And the yarn feeder 2d to the yarn feeder 2f are arranged in a stepwise manner, and the yarn feeder 2a, the yarn feeder 2d, the yarn feeder 2
b and the yarn feeding member 2e, and the yarn feeding member 2c and the yarn feeding member 2f
Are arranged adjacent to each other in the traverse direction. The yarn feeders 2a to 2f are arranged in a minimum unit as an arrangement pattern, and a plurality of the arrangement patterns are arranged in parallel along the traverse direction to constitute the traverse device 1 in FIG. However, the arrangement is not necessarily limited to the above arrangement, and they may be arranged so as not to contact each other. or,
The yarn path regulating guides 7a and 7b are arranged in parallel along the distal ends of the yarn feeding members 2a to 2f.
The yarn Y passes between a and 7b. Thereby, it is possible to reliably prevent the yarn Y from coming off the traverse device 1. However, depending on the tension of the yarn Y and the yarn path (position of the traverse device 1), the yarn path regulating guide 7
It is also possible to make a and 7b unnecessary.

The yarn feeding member 2 shown in FIG. 1 is capable of reciprocating to advance and retreat in a direction perpendicular to the traverse direction, and the movement is a piezoelectric actuator attached to each yarn feeding member 2. This is performed by the piezo element 3. The piezo element 3 is an element that is distorted when driving power (voltage) is externally supplied (applied). In the present embodiment, the piezo element 3 applies a voltage from the power supply 5 via the voltage application switch 41. Causes the piezo element 3 to be distorted.
Is reciprocated.

The voltage application switch 41 switches between short-circuit and open between the power supply 5 and the piezo element 3 and is attached to the yarn feeder 2 which needs to be advanced to the operation position. A voltage can be individually applied only to the piezo element 3 that has been set. Therefore, digital ON / OFF switching control of voltage application to the piezo element 3 by the voltage application switch 41 can be performed. Also, the voltage application changeover switch unit 4
The switching control of 1 is performed by the voltage application switching control means 42 outputting a switching signal.

Here, the traverse by the operation of the yarn feeding member 2 will be described with reference to FIGS.

In the operation of the yarn feed member 2 in FIG. 1, in FIG. 4, at least one yarn feed member 2 advances, and when the yarn feed member 2 retreats, the adjacent yarn feed members 2 advance sequentially. It is something like that. For example, FIG.
As shown in (2), when the yarn feed member 2A is advanced (here, the position at which the yarn feed member 2A advances and comes into contact with the yarn Y is referred to as an operation position, and the positions of the other yarn feed members 2B to 2E are In this case, the yarn feed member 2A operates by being in contact with the yarn Y at the side wall 26A. Next, as shown in FIG. 4B, the yarn feeding member 2A is retracted to the non-operation position, and the yarn feeding member 2B adjacent to the yarn feeding member 2A on the left side advances to the operation position. I have. Here, when the yarn Y is delivered to the side wall 26B of the yarn feeding member 2B, the yarn Y is traversed by being sent to the left side in FIG.

In FIG. 4 (b), not only the yarn feed member 2B but also the yarn feed member 2E has advanced, so that the yarn Y
Is in contact with the side wall 25E of the yarn feeding member 2E, and the movement in the left direction on the paper of FIG. 4 is regulated. Thereby, the left turn of the traverse is made, and FIG. 4 (b)
The position of the yarn Y indicated by is the turn point of the traverse. The turn on the right side of the traverse can be realized by operating the left side of the traverse so as to be symmetrical about the center of the traverse. Therefore, the traverse turning point can be changed by selecting the yarn feeding member 2 that operates the yarn feeding member 2E in a predetermined order.

Next, the procedure of the yarn feeding operation by the yarn feeding member 2 will be described in more detail with reference to FIG.

First, a case where the traverse from the turn of the traverse of the yarn Y in FIG. 4 (b) to the right side in FIG. 4 will be described. As shown in FIG. 5 (a), the yarn feed member 2B is in the non-operation position. At the same time, the yarn feeding member 2D advances to the operation position. At this time, the yarn Y moves along the inclined portion 23D of the yarn feeding member 2D. Here, when the yarn feed member 2D moves forward to the action position due to the yarn Y extending along the inclined portion 23D, a component of a force for feeding the yarn Y in the traverse direction (in this case, the right side in FIG. 5) is generated. Then thread Y
Moves to the right as shown in FIG. The yarn feeding member 2E may be retracted to the non-operating position when the contact with the yarn Y is released. Next, as shown in FIG. 5C, when the yarn feeding member 2D further advances and the yarn feeding member 2B completely retracts to the non-operation position, the yarn Y further moves rightward and contacts the side wall 25D. As shown in FIG. 4C, the thread is transferred toward the inclined portion 23C of the adjacent yarn feed member 2C. By repeating the above operation in the yarn feed member 2C, the yarn Y is further moved rightward as shown in FIG. 4D.

Here, as shown in FIG.
The slanted portion 23a and the slanted portion 24a are formed symmetrically with respect to a line orthogonal to the traverse direction through a line orthogonal to the traverse direction. This is for use in the yarn feeding to the left in FIG. That is, there is an object to reduce the number of the yarn feed members 2 by using one yarn feed member 2 for both the forward path and the return path of the traverse. Furthermore, this is for equalizing the pitches of the yarn feed in both the left and right directions (the same applies to the inclined portions 23b to 23f and the inclined portions 24b to 24f of the yarn feed members 2b to 2f).

Further, for example, the tip 21a of one yarn feeding member 2a is located on the inclined portion 21b side in the traverse direction, that is, on the left side in the traverse direction, with respect to the side wall 25b of the yarn feeding member 2b. This is to ensure that the leading end 21a of the yarn feeding member 2a is
If it is on the right side of the side wall 25b of the yarn feeding member 2b, the yarn Y
Is interposed between the inclined portion 24a and the inclined portion 23b, and the yarn feed is interrupted. Further, for example, the leading end 21b of one yarn feed member 2b is connected to the adjacent yarn feed member 2a.
For the same reason, the side wall 26a is located on the tip end 21a side of the yarn feeding member 2a in the traverse direction, that is, on the right side in the traverse direction.

When the end shape of the package P is tapered by gradually reducing the traverse range as the winding progresses as shown in FIG. 1, the yarn feeder 2A described above with reference to FIGS. 2E to 2E may be switched so as to be sequentially shifted to the right side of the drawing, that is, inside the traverse range. Further, the voltage application switching control means 4 shown in FIG.
2. Voltage application switching unit 41 by output of switching signal 2
By performing the switching at a high speed, the speed of the traverse can be increased.

The timing for reducing the traverse range may be determined, for example, by providing a rotation speed detector 6 at the center of the winding package P and changing the rotation speed of the center of the package P with the progress of winding. May be detected, and the voltage application switching control means 42 in FIG. 1 may output a switching signal to the voltage application switching unit 41 based on the detection result.
Further, in the case where the yarn Y is turned by the above-described yarn feed member 2E (see FIGS. 4 and 5), the operation of the yarn feed member 2E is occasionally performed.
By using D, 2C, or the like, so-called creeping for suppressing the ear height phenomenon that is likely to occur at the end of the traverse can be performed.

In addition to the above operation, as shown in FIG. 6, only the two yarn feeding members 2 are retracted to the non-operating position.
As shown in (a), the yarn Y is connected to the two yarn feed members 2A,
While the yarn path is regulated so as to be sandwiched between the 2D side wall 26A and the side wall 25D, the yarn feeding members 2C, 2D
(FIG. 6B) is retracted from the operation position,
The thread may be fed in the left direction on the paper. In this case, the yarn Y is supplied to the side walls 26A and 25D of the two yarn feed members 2A and 2D and the side walls 26B of the two yarn feed members 2B and 2E.
The yarn path is restricted from both sides by being sandwiched between the yarn Y and the side wall 25E, so that the wobbling of the yarn Y can be reliably suppressed.

Next, the procedure of the yarn feeding operation by the yarn feeding member 2 will be described in more detail with reference to FIG.

First, it is assumed that the turn of the yarn Y is made in FIG. 6B, and the turn of the traverse of the yarn Y is shown in FIG.
In the case of performing the traverse to the right side of FIG. 6 up to this point, as shown in FIG. 7A, the yarn feed member 2B starts retreating to the non-operation position, and the yarn feed member 2D advances to the operation position. Begin to. At this time, the yarn Y moves along the inclined portion 23D of the yarn feeding member 2D. Here, when the yarn feed member 2D moves forward to the action position due to the yarn Y along the inclined portion 23D, a component of a force for feeding the yarn Y in the traverse direction (in this case, the right side of the paper in FIG. 7) is generated. Then, the yarn Y moves to the right as shown in FIG. 7B while being transferred to the inclined portion 24B of the yarn feeding member 2B that has started the retreat operation to the non-operation position. Here, the yarn feed member 2E is immovable while remaining at the operating position. Next, as shown in FIG. 7 (c), the yarn feeding member 2C is kept at the retracted position, and the yarn feeding member 2D is further advanced.
When B completely retracts to the non-operating position, the yarn Y moves further rightward and comes into contact with the side wall 25D, and as shown in FIG. 6 (c), the space between the side wall 25D and the side wall 26A of the yarn feed member 2A It is in a state sandwiched between. The above operation is performed by the yarn feeding member 2
By repeating the process for C, 2B and 2A, FIG.
As shown in (d), the yarn Y is further moved rightward.

As described above, the plurality of yarn feed members 2 arranged in parallel in the traverse direction of the yarn Y and capable of moving back and forth between the operation position and the non-operation position, and each yarn feed member 2 is individually moved to the operation position and the non-operation position. By providing a piezoelectric element 3 that advances and retracts to and from the operation position, and by providing a voltage application control unit 4 for applying a voltage to a predetermined piezoelectric element 3 to cause distortion, the driving power can be reduced. Since traverse can be performed only by switching the supply, the tapered end package P can be formed by high-speed traverse. In particular, as in the present embodiment, the yarn feed member 2 directly contacts the yarn Y and feeds the yarn Y, thereby eliminating the need for a member that moves in the traverse direction, thereby enabling a high-speed traverse. Become.

In this embodiment, the slant portions 23 and 24 are formed on the yarn feeding member 2 as shown in FIG. 3, but the slant portion for traversing the yarn Y in the right direction is formed. ,
It is also possible to separately arrange those having a leftward traverse slope. Further, the yarn feed member 2 may not be made to act directly on the yarn Y, but may be made a yarn feed by a yarn guide, and the yarn guide may be pushed by a member such as the yarn feed member 2.

Further, in the embodiment of the present invention, the piezo element 3 is used as the actuator, but an ultrasonic vibrator accompanied by ultrasonic vibration by an electric signal may be used.

[0041]

The present invention is configured as described above.
The following effects are obtained.

According to the first aspect of the present invention, the plurality of yarns are arranged in parallel in the traverse direction of the yarn, and are capable of moving back and forth in a direction perpendicular to the traverse direction between an operation position and a non-operation position in contact with the yarn. A yarn feeder, a plurality of piezoelectric actuators for individually driving the yarn feeders between the working position and the non-working position, and control means for switching the driving of each piezoelectric actuator in a predetermined order; By performing the traverse by transferring the yarn between the yarn feed members while sequentially moving the yarn feed members to the operation position, the formation of the tapered end package by the high-speed traverse can be realized.

According to the second aspect of the present invention, there is provided a switch unit for individually switching the supply of driving power to each piezoelectric actuator, and the control means controls the driving of each piezoelectric actuator in a predetermined order. By outputting the switching signal to the switch section, the individual advance and retreat operations of the yarn feeding member can be performed at high speed.

According to the third aspect of the invention, since the piezoelectric actuator is constituted by a piezo element, digital ON / OFF control can be performed at high speed.

According to the fourth aspect of the present invention, the yarn feeding member has an inclined portion, and when the yarn is advanced from the non-operating position to the operating position, the yarn is sent in the traverse direction along the inclined portion, thereby simplifying the operation. The yarn can be fed in the traverse direction by a simple operation. Further, by directly feeding the yarn with the yarn sending member, a member that moves in the traverse direction can be eliminated, and the speed of the traverse can be increased.

According to the fifth aspect of the present invention, the inclined portion is formed on the distal end surface of the yarn feeding member, and is inclined on both sides from the center of the distal end surface toward the end in the traverse direction. In addition, it is not necessary to separately provide the yarn feeding members for the forward and backward paths of the yarn traverse, and the number of the yarn feeding members can be reduced.

According to the sixth aspect of the present invention, the plurality of yarns are juxtaposed in the traverse direction of the yarn, and are capable of moving back and forth in the direction perpendicular to the traverse direction between the working position and the non-working position in contact with the yarn. By switching the supply of driving power to the plurality of piezoelectric actuators attached to the yarn feed members in a predetermined order, the yarn feed members are individually advanced to the operation position, and the yarn is sequentially sent to the adjacent yarn feed members. By performing the delivery and traverse, the formation of the tapered end package by high-speed traverse can be realized.

According to the seventh aspect of the present invention, the yarn is made to extend along the inclined portion formed on the distal end surface of the yarn feeding member and inclined on both sides from the center of the distal end surface toward the end in the traverse direction. By feeding the yarn in the traverse direction, traverse can be performed with a smaller number of yarn feed members. Further, by directly feeding the yarn with the yarn sending member, a member that moves in the traverse direction can be eliminated, and the speed of the traverse can be increased.

[Brief description of the drawings]

FIG. 1 is a plan view showing a traverse device according to an embodiment of the present invention.

FIG. 2 is a side view showing the traverse device according to the embodiment of the present invention.

FIG. 3 is an explanatory diagram for explaining an arrangement of a yarn feeding member in FIG. 1;

FIG. 4 is a diagram illustrating a yarn feeding operation of a yarn feeding member.

FIG. 5 is a diagram showing the operation of the yarn feeding member between (b) and (c) of FIG.

FIG. 6 is a diagram illustrating another yarn feeding operation of the yarn feeding member.

FIG. 7 is a view showing the operation of the yarn feeding member between (b) and (c) of FIG.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Traverse device 2 Thread feed member 3 Piezo element 4 Voltage application control unit 5 Power supply 41 Voltage application changeover switch unit 42 Voltage application changeover control means

Claims (7)

[Claims] A plurality of yarn feed members arranged in parallel in the traverse direction of the yarn and capable of moving forward and backward in a direction orthogonal to the traverse direction between an operation position and a non-operation position in contact with the yarn; A plurality of piezoelectric actuators for individually driving the members between the operating position and the non-operating position; and control means for switching the driving of each piezoelectric actuator in a predetermined order. A traverse device that transfers a yarn between yarn feeding members and traverses the yarn while advancing the yarn. 2. A switch unit for individually switching the supply of driving power to each piezoelectric actuator, wherein said control means outputs a switching signal to said switch unit such that each piezoelectric actuator is driven in a predetermined order. The traverse device according to claim 1. 3. The traverse device according to claim 1, wherein said piezoelectric actuator is constituted by a piezo element. 4. The yarn feeding member according to claim 1, further comprising an inclined portion, wherein the yarn is sent in the traverse direction along the inclined portion when moving from the non-operation position to the operation position. Traverse device. 5. The traverse device according to claim 4, wherein the inclined portion is formed on a distal end surface of the yarn feeding member, and is inclined on both sides from a center of the distal end surface toward an end in the traverse direction. 6. A plurality of yarn feeding members which are arranged in parallel in the traverse direction of the yarn and which can advance and retreat in a direction orthogonal to the traverse direction between a working position and a non-working position in contact with the yarn. For multiple piezoelectric actuators,
A traverse method characterized in that the supply of drive power is switched in a predetermined order, so that the yarn feed members are individually advanced to the operation position and the yarn is sequentially delivered to adjacent yarn feed members to perform traverse. 7. The yarn is fed in a traverse direction by making the yarn follow an inclined portion formed on the distal end surface of the yarn feeding member and inclined on both sides from the center of the distal end surface toward the end in the traverse direction. The traversing method according to claim 6.