JP2022111528A - Yarn winding device - Google Patents

Abstract

To provide a yarn winding device which requires connection of a first yarn and a second yarn by an operator which facilitates a preparation work before connecting the first yarn and the second yarn.SOLUTION: A winding unit 2 includes: a tension application device 31 for applying a tension to a yarn Y; a holding part 32c for holding a first yarn Y1 when the yarn Y is parted to the first yarn Y1 and a second yarn Y2 in a yarn travelling direction; an arm driving motor 32d for moving the holding part 32c between a first position capable of capturing the first yarn Y1 and a second position capable of hooking the first yarn Y1 to the tension application device 31; and a unit control part 15. The unit control part 15 controls the arm driving motor 32d in a state where the first yarn Y1 is held by the holding part 32c, moves the holding part 32c from the first position to the second position, then returns the holding part 32c to the first position and stops the holding part 32c, or stops the holding part 32c at a third position where the holding part 32c is being returned to the first position.SELECTED DRAWING: Figure 5

Description

The present invention relates to a yarn winding device.

The yarn winding device described in Patent Document 1 forms a package by winding the yarn while applying tension to the yarn pulled out from a spinning cop (yarn supplier) by a tensioner (tensioning device). is configured to Further, the yarn winding device is configured to join the yarn end on the yarn supplier side and the yarn end on the package side when the yarn is split between the yarn supplier and the package in the yarn running direction. Specifically, the yarn winding device includes a splicing device (yarn splicing device) that twists the yarn ends together, a gripper tube that guides the yarn end of the yarn (first yarn) on the yarn supplier side to the yarn splicing device, A suction nozzle is provided for guiding the yarn end of the yarn (second yarn) on the package side to the yarn splicing device. A central control unit (control section) controls the operations of these components to splice the yarn end on the yarn supplier side and the yarn end on the package side.

JP 2016-132574 A

Although not described in Patent Document 1, in a yarn winding device that is not provided with the yarn splicing device, for example, a known hand splicer configured to be carried by the operator's hand or carried by the operator. The first thread and the second thread are spliced by. In such a case, before the first thread and the second thread are spliced, the thread end of the first thread and the thread end of the second thread are pulled out in advance to a position where the operator can easily work. There is a need. In addition, in Patent Document 1, in order to make it possible to take out a joint formed by joining yarn ends (described as a yarn spliced portion in Patent Document 1), a yarn that is cut after the joint is formed. A cutting device is described. However, there is no mention of how the yarn end is pulled out after the yarn is cut.

SUMMARY OF THE INVENTION An object of the present invention is to make it easier to perform preparatory work before splicing a first yarn and a second yarn in a yarn winding device that requires an operator to splice the first yarn and the second yarn. That is.

A yarn winding device according to a first aspect of the invention is a yarn winding device configured to wind a yarn pulled out from a yarn supplier to form a package, and the yarn winding device travels toward the package side in the yarn traveling direction. a tension applying device configured to apply tension to the yarn by applying resistance to the yarn in the yarn traveling direction, and a tension applying device configured to apply tension to the yarn in the yarn running direction; a holding part configured to hold the first yarn when separated from the second yarn on the package side; a first position capable of capturing the first yarn; a second position where the first yarn can be hung on the device; and controlling the movement driving section to move the holding section from the first position to the second position in a state where the first yarn is held by the holding section, and then the holding section is moved to the It is characterized by returning to the first position and stopping, or stopping at a third position on the way of returning the holding portion to the first position.

In the present invention, the first thread can be applied to the tensioning device by moving the holding part from the first position to the second position. As a result, the operator's work can be saved as compared with the case where the operator hooks the first thread on the tension applying device. Furthermore, after that, by stopping the holding portion at the first position or the third position, the first thread can be easily pulled from the holding portion. As described above, in a yarn winding device that requires an operator to splice the first yarn and the second yarn, the preparatory work before splicing the first yarn and the second yarn is facilitated. be able to.

A yarn winding device of a second invention is the yarn winding device according to the first invention, when a direction along the yarn traveling from the yarn supplier toward the tension applying device is defined as a first direction, the control unit is, as the third position, a thread end of the first thread and a thread end of the second thread in a second direction that intersects with the first direction, rather than the first position and the second position; The moving drive unit is controlled so as to stop the holding unit at a position on the side of the work space where work to connect the two can be performed.

The present invention makes it easier for the operator to access the first thread. Therefore, the preparatory work can be made easier.

A yarn winding device according to a third invention is the yarn winding device according to the first or second invention, wherein the tension applying device has a guiding state in which the first yarn held by the holding portion can be guided; The control unit is configured to be switchable between a state in which resistance is applied to the first yarn guided by the holding unit, and a state in which resistance is applied, and the control unit holds the first yarn. before moving the holding part holding the first thread to the second position, bringing the state of the tensioning device into the guiding state, and moving the holding part holding the first thread from the second position. and switching the state of the tension applying device from the guiding state to the resistance applying state.

According to the invention, resistance can be applied to the first yarn by the tensioning device after the first yarn has been guided to the tensioning device. Therefore, it is possible to prevent the first thread from falling off from the tension applying device.

A yarn winding device according to a fourth invention is a yarn winding device according to any one of the first to third inventions, wherein the package supporting portion configured to rotatably support the package and the direction in which the yarn is wound are different. A reverse drive section configured to rotate the package in a reverse direction; and an operation section configured to be operated by an operator. The reversing drive section is operated when the operation section is operated in a state in which the thread is divided into the first thread and the second thread.

When the second yarn is pulled out of the package to join the first and second yarns, if the yarn is thin and/or the package is heavy (i.e., has a large inertial mass and is difficult to rotate), the operator should When the thread is pulled, the thread may tear because it cannot withstand the tensile stress. However, if the operator manually reverses the package to avoid this, it is troublesome and may damage the yarn on the surface of the package. In this respect, according to the present invention, by operating the operation portion, it is possible to easily pull out the second yarn while suppressing trouble and/or damage to the package.

A yarn winding device according to a fifth aspect of the invention is the yarn winding device according to the fourth aspect, wherein the control unit terminates the operation of the reverse rotation driving unit after a first operation for starting the operation of the reverse rotation driving unit is performed. It is characterized in that the reversing drive section continues to operate until a second operation for causing the reverse rotation is performed.

According to the present invention, any length of the second thread can be pulled out according to the operation by the operator.

A yarn winding device according to a sixth aspect of the invention is the yarn winding device according to the fourth aspect, wherein the control unit operates the reverse rotation driving unit for a predetermined time each time a predetermined operation for operating the reverse rotation driving unit is performed once. It is characterized by

In the present invention, a predetermined length of the second thread can be pulled out each time the predetermined operation is performed. Therefore, by performing appropriate settings in advance, it is possible to pull out the second thread having an appropriate length with a simple operation.

1 is a front view of an automatic winder according to this embodiment; FIG. 4 is a schematic front view of the winding unit; FIG. FIG. 4 is a schematic side view of the winding unit; (a), (b) is explanatory drawing which shows operation|movement of a tensioning apparatus. 4 is a flowchart showing control by a unit control section; (a) to (d) are explanatory diagrams showing the operation of the thread guide device. (a) is an explanatory diagram showing how the operation unit is operated, and (b) is an explanatory diagram showing how the second thread is pulled out.

Next, an embodiment of the invention will be described. As shown in FIG. 1, the horizontal direction is the direction in which the plurality of winding units 2 are arranged. A direction perpendicular to the left-right direction and in which gravity acts is defined as an up-down direction (vertical direction). A direction perpendicular to both the left-right direction and the up-down direction and the front-rear direction. The direction in which the yarn Y runs is defined as the yarn running direction.

(Schematic configuration of automatic winder)
First, a schematic configuration of an automatic winder 1 according to this embodiment will be described with reference to FIG. FIG. 1 is a front view of an automatic winder 1 according to this embodiment. The automatic winder 1 includes a plurality of winding units 2 (yarn winding device of the present invention), a doffing device 3 and a machine control device 4 .

A plurality of winding units 2 are arranged in the horizontal direction. Each of the plurality of winding units 2 is configured to perform a winding process of winding the yarn Y drawn out from the yarn supplier Bs onto a winding bobbin Bw (see FIG. 2) to form the package P. . A yarn supplying package or a yarn supplying bobbin is selected as the yarn supplying body. The winding unit 2 can, for example, wind the yarn Y drawn from the yarn supplier Bs back onto the winding bobbin Bw to form a package P having a desired shape and desired density. The doffing device 3 is arranged above the plurality of winding units 2 and configured to be movable in the left-right direction. When the doffing device 3 receives a full winding signal from a winding unit 2, the doffing device 3 moves above the winding unit 2 to remove the full package P and empty the winding bobbin. Work such as attaching Bw to the winding unit 2 is performed. The machine base control device 4 is arranged, for example, on the left side of the plurality of winding units 2 . The machine base control device 4 is electrically connected to a unit control section 15 (described later) of the winding unit 2 and a control section (not shown) of the doffing device 3 .

(winding unit)
Next, the configuration of the winding unit 2 will be described with reference to FIGS. 2, 3 and 4(a) and (b). FIG. 2 is a schematic front view of the winding unit 2. FIG. FIG. 3 is a schematic side view of the winding unit 2. FIG. 4A and 4B are explanatory diagrams showing the operation of the tension applying device 31. FIG.

As shown in FIG. 3, the winding unit 2 includes a unit main body 10, a yarn feeding section 11, a yarn processing section 12, a winding section 13, an operation section 14, and a unit control section 15 (the control section of the present invention). part). The unit body 10 is a columnar member extending vertically. A yarn feeding section 11 , a yarn processing section 12 and a winding section 13 are attached to the side surface of the unit body 10 . The yarn supplying section 11, the yarn processing section 12, and the winding section 13 are arranged in this order from bottom to top. An operation portion 14 is provided on the front surface of the upper end portion of the unit main body 10 .

The yarn supplying section 11 is for unwinding and supplying the yarn Y wound around the yarn supplying body Bs. The yarn supplying section 11 has a yarn supplying body supporting portion 21 and a yarn unwinding auxiliary device 22 . The weft supplier support part 21 supports the weft supplier Bs in a substantially upright state. The yarn unwinding auxiliary device 22 regulates swelling of the yarn Y when the yarn Y is unwound from the yarn supplier Bs by the regulation cylinder 23 . The regulating tube 23 is configured to move downward as the amount of yarn wound around the yarn supplier Bs decreases, and to keep the size of the bulge at a constant size. Above the yarn unwinding assist device 22, a yarn feeler (not shown) for detecting the presence or absence of the running yarn Y is provided.

The yarn processing section 12 is configured to perform predetermined processing on the yarn Y. As shown in FIG. The yarn processing section 12 has a tension applying device 31 , a yarn guiding device 32 and a yarn speed sensor 33 .

The tension applying device 31 is configured to apply a predetermined tension to the running yarn Y. As shown in FIG. The tension applying device 31 is arranged, for example, directly above the yarn supplying section 11 . That is, the yarn Y travels upward along the vertical direction from the yarn supplying section 11 toward the tensioning device 31 . In this embodiment, the vertical direction corresponds to the first direction of the invention. The tension applying device 31 is a so-called gate type device. That is, as shown in FIG. 2, the tension applying device 31 has a plurality of fixed gate bodies 31a and a plurality of movable gate bodies 31b. The plurality of fixed gate bodies 31a and the plurality of movable gate bodies 31b are arranged alternately in the vertical direction. The fixed gate body 31a and the movable gate body 31b extend in the front-rear direction and are cantilevered with their rear ends serving as base ends.

The movable gate body 31b is in a tension-applying state (see the solid line in FIG. 2 and FIG. 4(b); a resistance-applying state of the present invention) and a guiding state (see the broken line in FIG. 2 and FIG. 4(a)). It is possible for the state to be switched. When the movable gate body 31b is in the tension-applying state, tension is applied to the yarn Y as will be described later. When the movable gate body 31b is in the guiding state, the yarn Y can be guided by the fixed gate body 31a and the movable gate body 31b (details will be described later). For example, as shown in FIG. 2, the movable gate body 31b is located on the right side of the fixed gate body 31a in the tension applied state. In this state, the thread Y mainly contacts the left side surface of the fixed gate member 31a and the right side surface of the movable gate member 31b. In this state, the thread Y is bent by the fixed gate body 31a and the movable gate body 31b. In this state, the yarn Y travels while contacting the fixed gate member 31a and the movable gate member 31b, thereby being given frictional resistance by the fixed gate member 31a and the movable gate member 31b. Thereby, tension is applied to the yarn Y. The strength of the tension is changed by changing the position of the movable gate body 31b in the horizontal direction. That is, the more the movable gate body 31b moves to the right, the greater the bending angle of the yarn Y and the longer the contact length between the yarn Y and the fixed gate body 31a and the movable gate body 31b. This increases the frictional force (resistance) applied to the yarn Y by the fixed gate member 31a and the movable gate member 31b, resulting in an increase in tension.

On the other hand, in the guided state, the movable gate body 31b is positioned to the left of the fixed gate body 31a. In this state, the thread Y does not contact at least the movable gate body 31b. In this state, the yarn Y can be guided to the tensioning device 31 from the front side of the tensioning device 31 . No tension is applied to the yarn Y in the guiding state.

The thread guide device 32 is provided near the tension applying device 31 . When the yarn Y is split between the yarn supplying portion 11 and the winding portion 13 for some reason during the winding process, the yarn guiding device 32 moves the yarn Y on the yarn supplying portion 11 side in the yarn running direction (hereinafter referred to as , the first yarn Y1) and the yarn Y on the winding section 13 side (hereinafter referred to as the second yarn Y2). For example, the yarn Y may be broken due to yarn breakage during the winding process. After the preparation operation is performed, the yarn end of the first yarn Y1 and the yarn end of the second yarn Y2 are spliced by the operator. For example, using a known portable yarn splicing device 100, the operator connects the yarn end of the first yarn Y1 (see the two-dot chain line in FIG. 3) and the second yarn Y2 (see the two-dot chain line in FIG. 3). splice with the thread end of Alternatively, the operator may manually tie the thread end of the first thread Y1 and the thread end of the second thread Y2. The work space S in which the work of splicing the yarn end of the first yarn Y1 and the yarn end of the second yarn Y2 can be performed is, for example, the space on the front side of the tension applying device 31 . In other words, the space on the front side of the tensioning device 31 is the space on the work space S side in the front-back direction of the tensioning device 31 . In this embodiment, the front-rear direction perpendicular to (crossing) the up-down direction corresponds to the second direction of the present invention.

More specifically, the yarn guide device 32 rotates the arm 32b, which is a pipe-shaped arm 32b rotatable about a rotation shaft 32a, a holding portion 32c disposed at the tip of the arm 32b, and the arm 32b. and an arm drive motor 32d (movement drive unit of the present invention). The axial direction of the rotating shaft 32a is substantially parallel to the left-right direction. The rotating shaft 32a is arranged above the tension applying device 31, for example. The arm 32b is a pipe-shaped member bent in a generally U-shape. The arm 32b extends at least in a direction perpendicular to the left-right direction (see FIG. 3). The movement range of the holding part 32c of the arm 32b is set at a position below the tension applying device 31 (see solid lines in FIGS. 2 and 3) and a position above the tension applying device 31 (see two (see dotted chain line and two-dot chain line in FIG. 3). In other words, the holding portion 32 c is movable between a position below the tensioning device 31 and a position above the tensioning device 31 . Further, the arm 32b is arranged so that the holding portion 32c can be positioned in the work space S (see FIG. 3) or in the vicinity thereof. The holding portion 32c has a suction port connected to a negative pressure source (not shown). The holding portion 32c is configured to be able to hold the first yarn Y1 by sucking and catching the first yarn Y1 with the negative pressure generated by the negative pressure source. The holding part 32c further has, for example, a gripping member (not shown) capable of gripping the yarn end in the vicinity of the suction port, but is not limited to this. The arm drive motor 32d is configured to drive and rotate the holding portion 32c by rotating the arm 32b. The arm drive motor 32 d is electrically connected to the unit control section 15 and controlled by the unit control section 15 .

The yarn speed sensor 33 is a device that detects the speed of the traveling yarn Y (yarn speed). The yarn speed sensor 33 outputs a predetermined signal to the unit control section 15 when, for example, the yarn Y is cut for some reason and the yarn Y is no longer detected.

The winding unit 13 is for winding the yarn Y around the winding bobbin Bw to form the package P. As shown in FIG. The winding section 13 has a cradle 41 (package support section of the present invention), a contact roller 42 , a roller drive motor 43 (reverse drive section of the present invention), and a traverse device 44 . The cradle 41 is configured to rotatably support the winding bobbin Bw (package P). As the contact roller 42 rotates in contact with the package P formed on the winding bobbin Bw, the package P and the winding bobbin Bw are driven to rotate by contact friction with the contact roller 42 . As a result, the yarn Y runs toward the winding bobbin Bw.

The roller driving motor 43 can rotationally drive the contact roller 42 in both the direction in which the yarn Y is wound around the package P (normal direction) and the direction in which the yarn Y can be pulled out from the package P (reverse direction). is configured to During a normal winding process, the contact roller 42 is driven to rotate forward to rotate the package P forward, and the yarn is wound onto the package P. As shown in FIG. Further, during the preparation work, the package P is reversed by driving the contact roller 42 in reverse (details will be described later).

The traverse device 44 is configured to traverse the yarn Y running toward the winding bobbin Bw. The traverse device 44 has, for example, an arm (not shown), a traverse guide 44a attached to the tip of the arm, and a traverse motor 44b for swinging the arm in the left-right direction. The traverse guide 44a reciprocates in the left-right direction by swinging the arm with the traverse motor 44b. As a result, the running yarn Y is traversed by the traverse guide 44a. The yarn Y is traversed by the traverse device 44 and wound on the winding bobbin Bw. The package P is thus formed.

The operating unit 14 is configured to be operated by an operator. As shown in FIG. 2 , the operation section 14 is arranged on the front surface of the upper end portion of the unit body 10 . The operating section 14 has a plurality of operating buttons 51 , a display section 52 and a restart switch 53 . The operation button 51 includes, for example, an upward triangular operation button 51a and a downward triangular operation button 51b. The operation buttons 51a and 51b are, for example, configured to be turned on when pressed by the operator's finger and turned off when the operator's finger is released. The display unit 52 is, for example, a known liquid crystal display. In addition, the display unit 52 may have, for example, an LED lamp (not shown). The restart switch 53 is a switch for restarting the winding process when the winding process is temporarily stopped. The operation section 14 is electrically connected to the unit control section 15 .

The unit control section 15 is built in the unit main body 10 . The unit control section 15 includes a CPU, a ROM, and a RAM. The unit control section 15 controls each component of the winding unit 2 by means of the CPU according to programs stored in the ROM.

In the winding unit 2 having the above configuration, the unit control section 15 drives the roller driving motor 43 to rotate the contact roller 42 while the package P and the contact roller 42 are in contact with each other. As a result, the yarn Y pulled out from the yarn supplier Bs is wound on the winding bobbin Bw to form the package P (winding process).

Here, in the winding unit 2 of the present embodiment, as described above, when the yarn Y is split in the yarn traveling direction, the operator needs to splice the first yarn Y1 and the second yarn Y2. be. In this case, it is necessary to perform preparatory work before splicing the first yarn Y1 and the second yarn Y2. That is, the yarn end of the first yarn Y1 and the yarn end of the second yarn Y2 are moved to a position (work space S) where the operator can join the first yarn Y1 and the second yarn Y2. must be extracted in advance. Therefore, in order to facilitate the preparation work, the unit control section 15 performs the following control.

(Pull-out control of the first thread)
When the yarn Y is split during the winding process (for example, when a signal indicating that the yarn Y is split is received from the yarn speed sensor 33), the unit controller 15 controls the following first yarn Pull out control of Y1 is performed. A detailed description will be given with reference to FIGS. 5 and 6(a) to (d). FIG. 5 is a flow chart showing control of the tension applying device 31 and the thread guiding device 32 by the unit control section 15. As shown in FIG. 6A to 6D are explanatory diagrams showing the operation of the thread guide device 32. FIG.

As an initial state, the unit control section 15 controls each component of the winding unit 2 to perform winding processing. During the winding process, the tensioning device 31 is in the tensioning state (see the solid line in FIG. 2 and FIG. 4B). During the winding process, the holding portion 32c of the yarn guide device 32 is positioned at a standby position where it does not interfere with the yarn Y. As shown in FIG. First, when the yarn Y is cut (S101), the unit control section 15 controls each component of the winding unit 2 to temporarily stop the winding process (S102). Next, the unit control section 15 controls the arm drive motor 32d (see FIG. 2) of the yarn guide device 32 to the first position (see FIG. 6A) where the first yarn Y1 can be sucked and captured. The holding portion 32c is positioned (S103). Further, the unit control section 15 controls the yarn guide device 32 to suck and catch the first yarn Y1 with negative pressure. This suction capture operation may be performed at the same time as step S103, or may be performed immediately after step S103.

Next, the unit control section 15 changes the state of the tension applying device 31 to the guidance state (S104; see FIG. 4A). That is, the unit control section 15 changes the state of the tension applying device 31 to the guiding state before moving the holding section 32c that has captured the first yarn Y1 to the second position (S105 described later). Note that step S104 may be performed before step S103 or at the same time as step S103.

Next, the unit control section 15 controls the arm drive motor 32d to rotate the arm 32b, thereby moving the holding section 32c above the tensioning device 31 (S105; see FIG. 6B). . The position (second position) of the holding portion 32c shown in FIG. 6B is the position opposite to the first position with the tension applying device 31 interposed therebetween in the vertical direction. The first yarn Y1 is thereby guided to the tensioning device 31. As shown in FIG. More specifically, the first thread Y1 is arranged between the fixed gate body 31a and the movable gate body 31b in the left-right direction (see the two-dot chain line in FIG. 4A). Next, the unit control section 15 controls the tensioning device 31 to switch the movable gate member 31b from the guiding state to the tensioning state (S106; see FIG. 4B). That is, the unit control section 15 changes the state of the tensioning device 31 from the guiding state to the tensioning state before moving the holding portion 32c that has captured the first yarn Y1 from the second position (S107 described later). switch. As a result, the first yarn Y1 is held by the fixed gate member 31a and the movable gate member 31b (in other words, the first yarn Y1 is hung on the tension applying device 31). When the tensioning device 31 is in the tensioning state, resistance is applied to the first yarn Y1 by the fixed gate body 31a and the movable gate body 31b. Therefore, the first yarn Y1 is prevented from falling off from the tensioning device 31. As shown in FIG.

Next, the unit control section 15 controls the arm driving motor 32d to rotate the arm 32b and stop the holding section 32c at a position (third position) on the way back from the second position to the first position (S107). (See FIG. 6(c)). The third position is a position between the first position and the second position in the vertical direction. Further, the third position is a position on the front side (work space S side) of the tensioning device 31 in the front-rear direction, and a position on the front side of both the first position and the second position. This makes it easier for the operator to manually pull the first yarn Y1 from the holding portion 32c. Furthermore, the third position is preferably above the tensioning device 31 in the vertical direction (on the side of the second position in the vertical direction relative to the tensioning device 31). Generally, in the vicinity of the tensioning device 31 or below the tensioning device 31, various devices such as a device (not shown) for supplying the yarn supplier Bs to the yarn supplier support section 21 are provided. placed. Therefore, when the holding portion 32c stops near or below the tensioning device 31, there is a possibility that the space for the operator to manually pull the first yarn Y1 becomes narrow. In this regard, on the second position side in the vertical direction of the tension applying device 31, a sufficient space for manually pulling the first yarn Y1 can be secured.

Note that the unit control section 15 may return the holding section 32c to the first position and stop it instead of stopping the holding section 32c at the third position in step S107 described above (see FIG. 6D). Even in such a case, the first yarn Y1 is pulled out from the yarn supplier Bs and held by the tensioning device 31. As shown in FIG. In other words, the yarn processing section 12 performs part of the preparatory work for splicing the first yarn Y1 and the second yarn Y2. Therefore, it is possible to reduce the labor of preparation work by the operator.

(Second thread pull-out control)
Next, the drawing control of the second yarn Y2 by the unit control section 15 will be described. In the winding unit 2, when the running yarn Y is cut, the winding process is temporarily stopped as described above. At this time, the second yarn Y2 is entirely wound around the package P because the package P continues to rotate for a while due to inertia. Therefore, the operator needs to pull out the second yarn Y2 from the package P as a preparatory work before splicing the first yarn Y1 and the second yarn Y2. However, if, for example, the yarn Y is thin and/or the amount of yarn Y wound on the package P is large (i.e., the inertial mass is large), simply pulling the second yarn Y2 will result in the second There is a risk that the yarn Y2 will not be able to withstand the tensile stress and will be torn off. On the other hand, if the operator manually rotates the package P to unwind the second yarn Y2 from the package P, it is troublesome and may damage the yarn Y on the surface of the package P. be. Therefore, in the present embodiment, the unit control section 15 performs the drawing process of the second yarn Y2 as follows. Description will be made below with reference to FIGS. FIG. 7A is an explanatory diagram showing how the operation unit 14 is operated. FIG. 7(b) is an explanatory diagram showing how the second yarn Y2 is pulled out.

When the operation button 51b is in the ON state, the unit control section 15 rotates the rotating shaft of the roller drive motor 43 in reverse at a predetermined number of rotations, drives the contact roller 42 in reverse, and rotates the package P in reverse. For example, while the operator continues to press the operation button 51b with a finger (see FIG. 7A), the ON state of the operation button 51b is maintained. As a result, while the operator continues to press the operation button 51b with his/her finger, the roller drive motor 43 continues to operate and the package P continues to rotate in reverse. Therefore, the second yarn Y2 can be easily pulled out from the package P without strongly pulling the second yarn Y2 (see FIG. 7(b)). When the operator releases the finger from the operation button 51b to turn off the operation button 51b, the unit control section 15 stops the roller drive motor 43. FIG. Through the pulling-out process as described above, the second yarn Y2 of any length can be pulled out according to the operation by the operator. In this embodiment, the operator's operation of pressing the operation button 51b with a finger is the first operation for starting the reverse rotation of the roller drive motor 43 . Further, the operation of releasing the finger from the operation button 51b by the operator is the second operation for ending the reverse rotation of the roller drive motor 43. FIG.

After the pull-out control of the first yarn Y1 and the pull-out control of the second yarn Y2 are performed as described above, the operator uses the yarn splicing device 100 (see FIG. 3) to pull the first yarn Y1 and the second yarn Y1 together. Y2 is spliced. Finally, the operator presses the resume switch 53 (see FIG. 2). As a result, the interrupted winding process is resumed.

As described above, by moving the holding portion 32c from the first position to the second position, the first yarn Y1 can be hung on the tensioning device 31. As shown in FIG. As a result, compared with the case where the operator hangs the first yarn Y1 on the tensioning device 31, the operator's labor can be saved. Furthermore, thereafter, by stopping the holding portion 32c at the first position or the third position, the first yarn Y1 can be easily pulled from the holding portion 32c. As described above, in the winding unit 2 that requires the operator to splice the first yarn Y1 and the second yarn Y2, preparations before splicing the first yarn Y1 and the second yarn Y2 are performed. It can make work easier.

As the third position, the holding portion 32c is stopped at a position closer to the work space S than the first and second positions in the front-rear direction, thereby making it easier for the operator to access the first yarn Y1. become easier. Therefore, the preparatory work can be made easier.

Further, the unit control section 15 changes the state of the tensioning device 31 to the guiding state before moving the holding section 32c that has captured the first yarn Y1 to the second position. Also, the unit control section 15 switches the state of the tensioning device 31 from the guiding state to the tensioning state before moving the holding portion 32c that has captured the first yarn Y1 from the second position. As a result, the first yarn Y1 can be reliably guided to the tensioning device 31. As shown in FIG. Also, it is possible to prevent the first yarn Y1 from falling off from the tension applying device 31 after the first yarn Y1 is guided to the tension applying device 31 .

Further, the unit control section 15 operates the roller drive motor 43 to move the package P when the operation section 14 is operated in a state in which the yarn Y is divided into the first yarn Y1 and the second yarn Y2. reverse. By operating the operating portion 14 in this manner, it is possible to easily pull out the second yarn Y2 while suppressing trouble and/or damage to the package P.

Further, the unit control section 15 keeps the roller driving motor 43 from being pressed until the finger is released from the operation button 51b after the operation button 51b is pressed (that is, until the second operation is performed after the first operation is performed). keep running. Thereby, the second yarn Y2 of any length can be pulled out according to the operation by the operator.

Next, a modification in which the above embodiment is modified will be described. However, components having the same configurations as those of the above-described embodiment are denoted by the same reference numerals, and description thereof will be omitted as appropriate.

(1) In the above embodiment, the unit control section 15 changes the state of the tension applying device 31 to the guidance state before moving the holding section 32c that has captured the first yarn Y1 to the second position (S105). (S104), but it is not limited to this. Steps S104 and S105 may be performed simultaneously, for example. Also, the unit control section 15 switches the state of the tensioning device 31 from the guiding state to the tensioning state ( S106) Although this is assumed, it is not limited to this. Steps S106 and S107 may be performed simultaneously, for example.

(2) In the above-described embodiments, the operation of pressing the operation button 51b is the first operation, and the operation of releasing the finger from the operation button 51b is the second operation, but the present invention is not limited to this. For example, the operation button 51b may be configured to switch between an on state and an off state each time it is pressed. That is, the operation of pressing the operation button 51b once when the operation button 51b is in the OFF state is the first operation, and the operation of pressing the operation button 51b again when the operation button 51b is in the ON state is the second operation. can be

(3) In the above embodiments, the operation unit 14 has the operation buttons 51a and 51b, but the present invention is not limited to this. For example, a touch panel (not shown) may be provided instead of the operation buttons 51a and 51b.

(4) In the above-described embodiments, the unit control section 15 continues to operate the roller drive motor 43 from when the first operation is performed on the operation section 14 until when the second operation is performed. It is not limited to this. For example, the unit control section 15 may be set to operate the roller drive motor 43 for a predetermined time when the operation button 51b is pressed once (predetermined operation of the present invention). In this way, the second yarn Y2 of a predetermined length can be pulled out each time the predetermined operation is performed. Therefore, by making appropriate settings in advance, it is possible to pull out the second yarn Y2 having an appropriate length with a simple operation. The predetermined time may be set in advance in the machine control device 4, for example. Alternatively, information on a predetermined length for pulling out the second yarn Y2 may be stored in the machine control device 4 instead of the predetermined time. In this case, information on the peripheral speed at which the contact roller 42 is reversed is also stored in the machine base control device 4 . Then, the predetermined time may be calculated based on the information on the predetermined length and the information on the peripheral speed.

(5) In the above-described embodiments, the rotation shaft of the roller drive motor 43 is reversely driven to reverse the package P, but the present invention is not limited to this. That is, the roller drive motor 43 may be used only for winding the yarn Y onto the winding bobbin Bw. In this case, for example, a separation mechanism (not shown) that separates the package P from the contact roller 42 when the yarn Y is cut, and a reverse drive section (not shown) that reversely drives the package P separated from the contact roller 42. It may be provided.

(6) In the above-described embodiments, the package P is reversely driven to pull out the second yarn Y2 from the package P, but the present invention is not limited to this. In other words, the operator may pull out the second yarn Y2 from the package P while reversing the package P by hand.

(7) In the above-described embodiments, the tensioning device 31 is switched to the guiding state before the first yarn Y1 is guided to the tensioning device 31 (S105) during the drawing control of the first yarn Y1. (S104) Although this is assumed, it is not limited to this. For example, step S104 and step 105 may be started at the same time. Alternatively, the winding unit 2 may be configured such that the first yarn Y1 can be guided to the tensioning device 31 even when the tensioning device 31 is in the tensioning state. That is, for example, on the front side of the tensioning device 31, there is provided a guide member (not shown) configured to bend the first yarn Y1 moving rearward toward the tensioning device 31 in a wavy shape. Also good.

(8) In the above-described embodiments, the winding unit 2 is provided with the gate-type tensioning device 31, but the present invention is not limited to this. The winding unit 2 may comprise a disk-type tensioning device (not shown) that provides resistance to the yarn Y by sandwiching the yarn Y between a plurality of disks (not shown).

(9) The present invention is not limited to the winding unit 2 of the automatic winder 1, but can be applied to various yarn winding devices that pull out yarn from a yarn supplier to form a package.

2 Winding unit (yarn winding device)
REFERENCE SIGNS LIST 14 operation unit 15 unit control unit 31 tension applying device 32c holding unit 32d arm drive motor (movement drive unit)
41 cradle (package support)
43 roller drive motor (reverse drive)
Bs yarn supplier P package S workspace Y yarn Y1 first yarn Y2 second yarn

Claims (6)

A yarn winding device configured to wind a yarn pulled out from a yarn supplier to form a package,
a tension applying device configured to apply tension to the yarn by applying resistance to the yarn traveling toward the package in the yarn traveling direction;
so as to hold the first yarn when the yarn is divided into a first yarn on the yarn supplier side in the yarn traveling direction and a second yarn on the package side in the yarn traveling direction. a configured retainer;
The holding part is configured to be movable between a first position where the first yarn can be caught and a second position where the first yarn can be hung on the tensioning device. a moving drive;
a control unit;
The control unit
With the first thread held by the holding portion,
After controlling the movement driving section to move the holding section from the first position to the second position, the holding section is returned to the first position and stopped, or the holding section is moved to the second position. A yarn winding device characterized in that the yarn winding device is stopped at the third position on the way back to the first position. When the direction along the yarn traveling from the yarn supplier toward the tension applying device is defined as a first direction,
The control unit
As the third position, the yarn end of the first yarn and the yarn end of the second yarn are spliced in a second direction that intersects with the first direction, rather than the first position and the second position. 2. The yarn winding device according to claim 1, wherein the movement driving section is controlled so as to stop the holding section at a position on the work space side where work can be performed. The tensioning device is
a guiding state in which the first yarn held by the holding portion can be guided; and a resistance applying state in which resistance can be applied to the first yarn guided by the holding portion. configured to be able to switch states between
The control unit
before moving the holding portion holding the first yarn to the second position, setting the state of the tensioning device to the guiding state;
2. The state of said tension applying device is switched from said guiding state to said resistance applying state before said holding portion holding said first thread is moved from said second position. 2. The yarn winding device according to 2. a package support configured to rotatably support the package;
a reverse drive unit configured to rotate the package in a direction opposite to the direction in which the yarn is wound;
an operation unit configured to be operated by an operator,
The control unit
4. The apparatus according to any one of claims 1 to 3, wherein the reverse drive section is operated when the operating section is operated in a state in which the thread is divided into the first thread and the second thread. The yarn winding device according to 1. The control unit
The reverse drive unit is continuously operated from when a first operation for starting the operation of the reverse drive unit is performed until a second operation for ending the operation of the reverse drive unit is performed. The yarn winding device according to claim 4. The control unit
5. The yarn winding device according to claim 4, wherein each time a predetermined operation for operating the reverse drive section is performed, the reverse drive section is operated for a predetermined period of time.

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