JP2015048155A - Yarn winding apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a yarn winding apparatus capable of reducing the time for splicing yarn by shortening the time required for catching yarn.SOLUTION: An automatic winder comprises a yarn feeding section 15, a winding section 17, a yarn splicer 37, a yarn catching guide 30, and a unit controller. The winding section 17 winds and takes up yarn 14 from the yarn feeding section 15 as a package 22. The yarn splicer 37 splices lower yarn and upper yarn when yarn 14 becomes separated between the yarn feeding section 15 and the winding section 17. The yarn catching guide 30 includes a package side suction port 33 constituted movably between a catching position for catching upper yarn from the package 22 and a guiding position for guiding the caught upper yarn to the yarn splicer 37. The unit controller controls the movement of the package side suction port 33. The unit controller performs control so that the package side suction port 33 stands by at a standby position closer to the catching position than to the guiding position during winding operation of the package 22.

Description

  The present invention relates to a yarn winding device including a yarn catching and guiding device that catches a yarn divided between a winding unit and a yarn supplying unit.

  2. Description of the Related Art Conventionally, there is known a yarn winding device that forms a package by winding a yarn supplied from a yarn supplying unit by a winding unit. In this yarn winding device, the yarn catching and guiding device for catching the yarn divided between the yarn supplying unit and the winding unit, and the yarn caught by the yarn catching and guiding device are guided, so that these yarns are succeeded. And a yarn joining device.

  The yarn catching and guiding device that catches the yarn on the winding unit side among the divided yarns guides the captured yarn to the yarn joining device, and the catching position for catching the yarn on the winding unit side in the vicinity of the winding unit. It is configured to be movable between the guide position and the guide position. In general, the yarn catching and guiding device stands by at the guide position during winding of the package, and after the yarn is split, moves from the guide position to the catching position to catch the yarn. Thereafter, the yarn catching and guiding device returns to the guide position again and guides the yarn to the yarn joining device. After the yarn joining device starts the yarn joining, the yarn catches and cannot return to the catching position, so the yarn catching and guiding device stands by at the guiding position. As described above, in the conventional yarn winding device, since the yarn catching guide device moves from the guide position to the catching position after the yarn splitting occurs, the time for yarn splicing becomes longer, which hinders increase in winding efficiency. It was.

  In Patent Document 1, in order to move the yarn catching and guiding device from the catching position to the guiding position in a state where the yarn is arranged between the yarn supplying portion and the yarn joining device, an inclined portion or the like of the yarn catching and guiding device is used. A configuration for retracting the yarn is disclosed.

  Patent Document 2 discloses a yarn winding device including a yarn accumulating device. The yarn catching and guiding device provided in the yarn winding device of Patent Document 2 catches the yarn just below the yarn accumulating device. Further, the yarn catching and guiding device is configured to be able to rotate 360 degrees, and can return to the catching position without retracting the yarn even after the yarn is guided to the yarn joining device. Therefore, since the yarn catching and guiding device can stand by at the catching position during the winding operation of the package, the yarn splicing time can be shortened.

  Patent Document 3 discloses a yarn catching and guiding device that guides a yarn from a winding unit to a yarn supplying unit. Since this yarn catching and guiding device is not located between the winding unit and the yarn supplying unit, it can move from the winding unit to the yarn supplying unit without retracting the yarn.

JP 2012-20853 A JP 2010-47360 A US Patent Application Publication No. 2003/29155

  However, in Patent Document 1, the yarn catching and guiding device is guided in a state where the yarn is arranged between the yarn joining device and the winding unit, or in a state where the yarn is arranged between the yarn supplying unit and the winding unit. There is no description of a configuration for moving from the position to the vicinity of the capture position. For this reason, since the yarn catching and guiding device cannot be kept in the vicinity of the winding unit, the yarn splicing time cannot be shortened and the winding efficiency cannot be increased.

  Further, since Patent Document 2 is premised on the provision of a yarn accumulating device, the yarn winding device not equipped with the yarn accumulating device cannot exhibit the effect of shortening the yarn splicing time.

  In the case of the layout of the yarn winding device disclosed in Patent Document 3, it is not necessary to retract the yarn, but it is difficult to apply this layout to the yarn winding device including the yarn joining device.

  The present invention has been made in view of the above circumstances, and a main object of the present invention is to provide a yarn winding device that shortens the time of yarn splicing by shortening the time required to capture the yarn.

Means and effects for solving the problems

  The problems to be solved by the present invention are as described above. Next, means for solving the problems and the effects thereof will be described.

  According to an aspect of the present invention, a yarn winding device having the following configuration is provided. That is, the yarn winding device includes a yarn supplying unit, a winding unit, a yarn joining device, a yarn catching guide device, and a control unit. The winding unit winds the yarn of the yarn supplying unit as a package. The yarn joining device joins the yarn on the yarn feeding unit side and the yarn on the winding unit side when the yarn is divided between the yarn feeding unit and the winding unit. The yarn catching and guiding device is configured to be movable between a catching position for catching the yarn on the winding unit side from the package and a guide position for guiding the caught yarn to the yarn joining device. A capturing part is provided. The control unit controls movement of the package side catching unit of the yarn catching and guiding device. The control unit causes the package-side capture unit to stand by at a standby position that is closer to the capture position than the guide position during the winding operation of the package.

  Thereby, when the yarn is divided, the package side catching portion does not need to be moved so much, so that the yarn splicing can be performed quickly and the winding efficiency of the yarn winding device can be increased.

  In the yarn winding device, the yarn passing from the yarn feeding portion to the winding portion or the yarn passing from the yarn feeding portion to the yarn joining device is retracted from the guide position of the package side catching portion. It is preferable that a yarn retracting mechanism that enables movement to the standby position is provided.

  Thereby, even after the yarn is guided to the yarn joining device, the package side catching portion can be moved to the standby position. Therefore, even if the package side catching portion is moved slowly, the winding efficiency is not affected. Therefore, the life of the package-side capture unit can be extended by moving the package-side capture unit at a speed that does not apply a load to the package-side capture unit. Further, since the package-side catcher moves after guiding the yarn to the yarn joining device, the operator can detect in advance the timing at which the package-side catcher moves.

  In the above-described yarn winding device, it is preferable that the package-side capturing portion is a slit-like package-side suction port that extends in the winding width direction of the package.

  Thereby, the yarn end wound around the package can be reliably captured. When the package-side catching portion is a package-side suction port of this type, in the conventional configuration, after guiding the yarn to the yarn joining device, the yarn gets in the way and the package-side suction port moves to the package side. Although not possible, the above-described yarn retracting mechanism enables movement toward the package side.

  The yarn winding device preferably has the following configuration. That is, the winding unit includes a contact roller that contacts the package and rotates together with the package. The position where the package side suction port faces the contact portion of the package and the contact roller is defined as the standby position of the package side capturing portion.

  Thereby, since the package side suction port (package side capturing part) can be waited at a position closer to the package, the winding efficiency can be further improved.

  In the yarn winding device, the yarn retracting mechanism is configured to retract the yarn by contacting a yarn passing from the yarn supplying unit to the winding unit or a yarn passing from the yarn supplying unit to the yarn joining device. A lever member is preferred.

  Thereby, since the yarn can be retracted with a simple member, the manufacturing cost of the yarn retracting mechanism can be reduced.

  The yarn winding device preferably has the following configuration. That is, the yarn catching and guiding device pivotally moves the package side catching portion between the catching position and the guiding position. The lever member retracts the yarn in a direction parallel to a turning axis which is a turning center of the package side capturing portion.

  As a result, the distance for retracting the yarn can be shortened, so that the yarn splicing can be performed quickly. Further, since the amount of movement of the lever member can be short, the manufacturing cost of the yarn retracting mechanism can be reduced.

  In the above-described yarn winding device, it is preferable that the lever member includes a concave member in which a concave portion is formed in a portion in contact with the yarn.

  Thereby, the yarn can be hooked and retracted more reliably.

  In the yarn winding device, the concave member is preferably a member in which a concave portion is formed over the entire circumference of the cylindrical member.

  Thereby, since the concave member becomes rotationally symmetric, it can be attached in an arbitrary direction, so that the workability of the attachment work can be improved. In addition, the concave member can be easily manufactured.

  The yarn winding device preferably has the following configuration. That is, the yarn winding device includes a yarn feeding unit side yarn catching guide device including a yarn feeding unit side catching unit capable of catching a yarn. The yarn feeding unit side catching unit is located at a yarn feeding unit side catching position between the yarn joining device and the winding unit during winding of the package, and the yarn joining device and the winding unit. The yarn on the yarn supplying section side that is divided between the two sections is captured.

  Thereby, compared with the structure which makes the yarn supply part side capture | acquisition part stand by near the yarn supply part, a waste thread can be decreased.

  The yarn winding device preferably has the following configuration. That is, in the yarn path from the yarn supplying unit to the winding unit, a yarn defect detecting unit that detects a yarn defect and the yarn defect detecting unit are arranged between the yarn joining device and the winding unit. When a defect is detected, a cutting unit that cuts the traveling yarn is disposed. The yarn feeding section side catching section catches the yarn on the yarn feeding section side divided by the cutting section between the cutting section and the yarn joining device.

  As a result, the yarn can be captured in the vicinity of the cutting portion, so that the yarn can be reliably captured and waste yarn can be reduced.

  In the yarn winding device, the yarn feeding portion side catching portion is configured to be movable between the yarn feeding portion side catching position and a position between the yarn feeding portion and the yarn joining device. It is preferable.

  As a result, the separated yarn and the newly supplied yarn bobbin can be captured by the same yarn feeding section side yarn catching guide device (relay pipe). Can be reduced.

The front view of the automatic winder which concerns on one Embodiment of this invention. The front view of a winding unit. The side view of a winding unit. The side view of the winding unit during the winding operation of the package and after catching the separated yarn. The side view of the winding unit after guiding the captured yarn and during yarn splicing of the guided yarn. The side view which shows operation | movement when the relay pipe which concerns on a modification waits between a yarn splicing apparatus and a clearer, and catches the parted yarn. The side view which shows the operation | movement which catches the thread | yarn of the yarn supply bobbin newly supplied by the relay pipe which concerns on a modification, and guides it to a yarn joining apparatus. The side view which shows the operation | movement at the time of the thread | yarn cutting of the conventional relay pipe.

  Next, an automatic winder according to an embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a front view showing a schematic configuration of an automatic winder 1 of the present embodiment.

  As shown in FIG. 1, the automatic winder (yarn winding device) 1 includes a plurality of winding units 10 arranged side by side, a machine base control device 12, and a doffing device 13 as main components. .

  The machine base control device 12 is configured to be communicable with each winding unit 10. The operator of the automatic winder 1 can manage a plurality of winding units 10 collectively by appropriately operating the machine control device 12.

  Each winding unit 10 is configured to unwind the yarn 14 from the yarn supplying bobbin 16 and wind the yarn 14 around the winding bobbin 19 while traversing the yarn 14. As described above, the winding unit 10 forms the package 22.

  The doffing device 13 travels to the position of the winding unit 10 when the package 22 becomes full in each winding unit 10 (a state where a specified amount of yarn is wound), It is configured to remove and set an empty winding bobbin 19.

  Next, the configuration of the winding unit 10 will be described with reference to FIGS. 2 and 3. As shown in FIG. 2, each winding unit 10 includes a winding unit main body 11 and a unit control unit 50.

  The unit controller 50 includes, for example, a CPU and a ROM. The ROM stores a program for controlling each component of the winding unit main body 11. The CPU executes a program stored in the ROM.

  Each winding unit main body 11 includes a yarn supplying unit 15 and a winding unit 17.

  The yarn supplying section 15 is configured to hold a yarn supplying bobbin 16 placed on a conveyance tray (not shown) at a predetermined position. Thereby, the yarn 14 can be appropriately unwound from the yarn supplying bobbin 16. The yarn supplying unit 15 is not limited to the transport tray type, and may be a magazine type, for example.

  The winding unit 17 includes a cradle 18, a winding bobbin 19, and a winding drum (contact roller) 20.

  The cradle 18 has a pair of rotation support portions, and is configured to rotatably support the take-up bobbin 19 (or package 22) by sandwiching the take-up bobbin 19 between the rotation support portions. . The cradle 18 is configured so that the outer periphery of the supporting package 22 can be brought into contact with the outer periphery of the winding drum 20.

  The winding drum 20 is for traversing the yarn 14 on the surface of the package 22 and rotating the package 22. The winding drum 20 is rotationally driven by a drum drive motor 21. With the outer periphery of the package 22 in contact with the winding drum 20, the winding of the winding drum 20 can be driven to rotate the package 22. A spiral traverse groove is formed on the outer peripheral surface of the winding drum 20. The yarn 14 unwound from the yarn feeding bobbin 16 is wound around the surface of the package 22 while being traversed with a constant width by the traverse groove. Thereby, the package 22 having a constant winding width can be formed.

  Each winding unit 10 includes, in order from the yarn feeding unit 15 side, in the yarn traveling path between the yarn feeding unit 15 and the winding unit 17, an unwinding assisting device 25, a tension applying device 27, and a lower yarn guide 28. The yarn catching and guiding device 30, the yarn retracting lever 34, the yarn joining device 37, the yarn trap 38, and the clearer (yarn defect detecting portion) 40 are arranged. In the following description, the upstream side and the downstream side in the traveling direction of the yarn 14 may be simply referred to as “upstream side” and “downstream side”.

  The unwinding assisting device 25 includes a regulating member 26 that can be put on the core tube of the yarn feeding bobbin 16. The restricting member 26 is configured in a substantially cylindrical shape and is disposed so as to contact a balloon formed on the yarn layer upper portion of the yarn feeding bobbin 16. The balloon is a portion where the yarn 14 unwound from the yarn feeding bobbin 16 is swung around by centrifugal force. By bringing the regulating member 26 into contact with the balloon, tension is applied to the yarn 14 of the balloon portion, and the yarn 14 is prevented from being swung excessively. Thereby, the yarn 14 can be appropriately unwound from the yarn supplying bobbin 16.

  The tension applying device 27 applies a predetermined tension to the traveling yarn 14. In the present embodiment, the tension applying device 27 is configured by a gate type device in which movable comb teeth are arranged with respect to fixed comb teeth. The movable comb teeth are biased so that the comb teeth are engaged with each other. By passing the yarn 14 while bending the meshed comb teeth, an appropriate tension can be applied to the yarn 14 and the quality of the package 22 can be improved. However, the tension applying device 27 is not limited to the gate type, but may be a disk type, for example.

  The yarn catching and guiding device 30 is a device that catches the yarn on the winding unit 17 side when the yarn 14 is in a divided state. The yarn catching and guiding device 30 includes a shaft portion 31, a pipe member 32, and a package side suction port (package side catching portion) 33. The pipe member 32 can be swung to the yarn supplying unit 15 side and the winding unit 17 side with the shaft portion 31 as a swiveling center under the control of the unit control unit 50. As shown in FIG. 2, the package-side suction port 33 has an elongated slit, and the longitudinal direction of the slit is the same as the winding width direction of the package 22. The yarn catching and guiding device 30 is connected to a negative pressure source (not shown) and can generate a suction flow at the package side suction port 33. The position at which the package suction port 33 is placed on standby or the timing at which it is operated will be described later.

  The yarn retracting lever (yarn retracting mechanism) 34 is a member that allows the package-side suction port 33 to move from the yarn supplying portion 15 side to the yarn supplying bobbin 16 side by retracting the yarn 14. As shown in the enlarged view of FIG. 2, the yarn retracting lever 34 includes a lever portion 35 and a concave member 36.

  A concave member 36 is fixed to one end side of the lever portion 35, and a driving member (not shown) such as a solenoid is attached to the other end side of the lever portion 35. The concave member 36 is a cylindrical member having a larger diameter at both ends. By providing the recesses in this way, it is possible to prevent the thread 14 from slipping out of the recessed member 36 when the thread 14 is retracted.

  With this configuration, the lever portion 35 is in a state where the yarn 14 on the upstream side of the yarn retracting lever 34 is guided by the lower thread guide 28 and the yarn 14 on the downstream side of the yarn retracting lever 34 is clamped by the clamp member of the yarn joining device 37. By operating the drive member attached to the other end of the thread, the thread 14 can be retracted as shown in FIG.

  The yarn joining device 37 is configured so that when the yarn 14 is separated between the yarn supplying unit 15 and the winding unit 17 for some reason, the lower yarn on the yarn supplying unit 15 side and the upper yarn on the winding unit 17 side are arranged. The yarn is spliced together. In the present embodiment, the yarn joining device 37 is configured as a splicer device that twists yarn ends together by a swirling air flow generated by compressed air. However, the yarn splicing device 37 is not limited to the splicer device, and for example, a mechanical knotter or the like can be employed. The operation of each part when guiding the yarn 14 to the yarn joining device 37 will be described later.

  The yarn trap (yarn feeding unit side yarn catching and guiding device) 38 is connected to a negative pressure source (not shown), and generates a suction flow from the first yarn feeding unit side suction port (yarn feeding unit side catching unit) 39. be able to. Thereby, the thread | yarn by the side of the yarn feeding part 15 is seized among the thread | yarns which became the parting state. The yarn trap 38 is used to catch the yarn 14 when a cutter 43 described later cuts the yarn 14.

  The clearer 40 includes a clearer head 41 in which a sensor (not shown) for detecting the thickness of the yarn joining device 37 is disposed, and an analyzer 42 that processes a yarn thickness signal from the sensor. The clearer 40 detects a yarn defect such as a slab by monitoring a yarn thickness signal from the sensor. In the vicinity of the clearer head 41, a cutter (cutting portion) 43 for cutting the yarn 14 immediately when the clearer 40 detects a yarn defect is provided. The analyzer 42 may be provided in the unit controller 50.

  The winding unit 10 also includes a relay pipe 60 that captures the newly supplied yarn 14 of the yarn feeding bobbin 16 and guides it to the yarn joining device 37.

  As described above, the winding unit 10 can form the package 22 by winding the yarn 14 around the winding bobbin 19.

  Next, when the clearer 40 detects a yarn defect and the cutter 43 cuts the yarn 14, a process for joining the separated yarn 14 will be described with reference to FIGS. 4 and 5 are side views of the winding unit 10 for explaining the operation at the time of piecing. Note that the processes described below are examples, and the order of some processes may be changed, or a plurality of processes may be performed simultaneously.

  As shown in FIG. 4A, the package-side suction port 33 stands by at a standby position in the vicinity of the winding unit 17 during the winding operation of the package 22. Here, the standby position in the present embodiment is “a position where the package-side suction port 33 faces the contact portion of the package 22 and the winding drum 20”. The standby position can also be expressed as “a position closer to the capture position (FIG. 4B) than the guide position (FIG. 5A)”.

  When the clearer 40 detects a yarn defect during the winding operation of the package 22, the unit controller 50 instructs the cutter 43 to cut the yarn 14. Of the cut yarns, the yarn 14 (upper yarn) positioned above is wound around the package 22. Further, the unit control unit 50 moves the package side suction port 33 to the capture position after cutting the yarn 14 (see FIG. 4B). Thereafter, the unit controller 50 reversely rotates the winding drum 20 to reversely rotate the package 22 and generates a suction flow at the package-side suction port 33. Thereby, the package side suction port 33 can suck and capture the upper thread.

  Further, the unit control unit 50 generates a suction flow at the first yarn feeding unit side suction port 39 of the yarn trap 38 immediately after the yarn 14 is cut. As a result, the first yarn feeding unit side suction port 39 can suck and capture the yarn 14 (lower yarn) positioned below the cut yarn 14 (see FIG. 4B).

  Here, it is necessary to guide the upper thread captured by the package side suction port 33 to the yarn joining device 37. However, since the lower yarn passes between the yarn joining device 37 and the yarn feeding bobbin 16, this is the case. The package side suction port 33 cannot be moved to the guide position. Therefore, the unit controller 50 moves the yarn retracting lever 34 as shown in FIG. 5A to retract the yarn 14. The unit controller 50 moves the package side suction port 33 to the guide position after retracting the yarn 14 (see FIG. 5A).

  As a result, the upper yarn and the lower yarn are guided to the yarn joining device 37. The yarn joining device 37 cuts the upper yarn with a length suitable for the yarn joining after the upper yarn is clamped by the clamp member. Thereafter, the unit controller 50 moves the package side suction port 33 to the standby position (see FIG. 5B). Note that the timing at which the package-side suction port 33 is raised is arbitrary as long as the upper thread captured by the package-side suction port 33 is cut. For example, the timing may be after the yarn splicing is completed. Then, after completion of the splicing, the unit controller 50 rotates the winding drum 20 and starts the winding operation of the package 22 again.

  Note that the yarn retracting lever 34 keeps retracting the lower thread from when the package side suction port 33 moves from the catching position to the guide position until when the yarn splicing is executed and the package side suction port 33 returns to the standby position. Instead, the yarn retraction by the yarn retraction lever 34 may be temporarily released when the yarn splicing is executed.

  Further, in the conventional configuration, since the lower thread becomes an obstacle, the package-side suction port cannot be moved from the guide position to the standby position. Therefore, the package side suction port is kept waiting at the guide position. Therefore, the package side suction port has to be raised to the catch position after the yarn is cut, and it takes time to join the yarn.

  In this respect, in the present application, the lower thread can be retracted by the thread retracting lever 34, so that the package side suction port 33 can be moved from the guide position to the standby position. Therefore, the package-side suction port 33 can be made to wait at the capture position or a standby position in the vicinity thereof. Accordingly, the upper yarn can be quickly captured at the next yarn cutting time, so that the yarn splicing time can be shortened.

  In particular, when the package diameter is small, the influence of the inertia force is small, so that the time until the package 22 is stopped is short. Therefore, the characteristics of the present application can be effectively used to further shorten the yarn splicing time. In addition, when the yarn joining fails, the package is stopped or slowed down, so that the effect of the present application can be effectively exhibited.

  In the present embodiment, the pivot axis of the yarn catching and guiding device 30 is the front and back direction of the paper surface (FIG. 5), and the moving direction of the yarn retracting lever 34 is also the front and back surface of the paper surface. Thus, by making both parallel, the thread | yarn 14 can evacuate in the opening direction of the package side suction port 33 opened largely in a turning axis direction, Therefore The movement amount of the thread | yarn 14 can be suppressed.

  Next, a modification of the above embodiment will be described with reference to FIGS. FIG. 6 is a side view showing the operation when the cut yarn 14 is captured, and FIG. 7 captures the newly supplied yarn 14 of the yarn feeding bobbin 16 and guides it to the yarn joining device 37. It is a side view which shows operation | movement. In the description of this modification, the same or similar members as those in the above embodiment may be denoted by the same reference numerals in the drawings, and description thereof may be omitted.

  In this modification, the yarn trap 38 is removed from the above embodiment. In the present modification, the yarn 14 cut by the cutter 43 is captured by a relay pipe (yarn feeding unit side yarn catching and guiding device) 60. That is, the relay pipe 60 of the present modification has a function of catching the lower thread at the time of yarn cutting and a function of catching the yarn 14 of the newly supplied yarn feeding bobbin 16.

  As shown in FIG. 6A, the relay pipe 60 includes a shaft portion 61, a pipe member 62, and a second yarn supplying portion side suction port (yarn supplying portion side capturing portion) 63. The pipe member 62 can turn up and down around the shaft portion 61 as a turning center under the control of the unit controller 50. The relay pipe 60 is connected to a negative pressure source (not shown), and can generate a suction flow at the second yarn feeding unit side suction port 63.

  First, with reference to FIG. 6, an operation in which the relay pipe 60 captures the lower yarn at the time of yarn cutting will be described.

  In the conventional yarn winding device, as shown in FIG. 8A, the suction port of the yarn feeding unit side yarn catching and guiding device stands by relatively below. Therefore, since the yarn cutting point and the yarn catching point are separated, the yarn between them becomes a waste yarn. Further, as shown in FIG. 8B, when the sucked yarn is moved from the capture position to the guide position, the yarn is further pulled out. Thus, in the conventional yarn winding device, a waste yarn is generated every time the yarn is spliced. In particular, if the upper thread is unsuccessful, the same amount of wasted thread is generated.

  In this regard, in the modified yarn winding device, as shown in FIG. 6A, the second yarn feeding unit side suction port 63 is located between the yarn joining device 37 and the winding unit 17 and below the cutter 43. Is set to the standby position (yarn-feeding-part-side capture position). Accordingly, since the second yarn feeding portion side suction port 63 sucks and captures the vicinity of the end portion of the cut yarn 14 at this standby position, generation of waste yarn can be suppressed. Furthermore, by setting the standby position of the second yarn feeding unit side suction port 63 as described above, the yarn feeding unit side catching position (standby position) and the guide position become closer. Therefore, as shown in FIG. 6B, since the yarn 14 is not pulled out excessively when the yarn 14 is guided, it is possible to suppress the occurrence of wasted yarn during the guidance.

  Next, with reference to FIG. 7, an operation in which the relay pipe 60 captures the yarn 14 of the yarn feeding bobbin 16 when the yarn feeding bobbin 16 is newly supplied will be described.

  When all the yarns 14 of the yarn feeding bobbin 16 are unwound or when winding is started, a new yarn feeding bobbin 16 is supplied by the doffing device 13 and the yarn 14 is pulled out. As shown in FIG. 7A, the drawn-out yarn 14 is captured by the second yarn feeding portion side suction port 63 at the second capturing position. After capturing the yarn 14, the unit controller 50 moves the second yarn feeding portion side suction port 63 of the relay pipe 60 to the guide position. Further, the unit controller 50 controls the yarn catching and guiding device 30 to catch the yarn 14 on the package 22 side and guide it to the yarn joining device 37. The unit control unit 50 causes the yarn joining device 37 to join the guided upper yarn and lower yarn. Thereafter, the winding drum 20 is rotated to start (restart) winding of the package 22.

  In this way, in the modification, the relay pipe 60 captures the yarn 14 at the time of yarn cutting and captures the yarn 14 of the newly supplied yarn feeding bobbin 16, which is compared with the above embodiment. The number of parts can be reduced.

  As described above, the automatic winder 1 includes the yarn supplying unit 15, the winding unit 17, the yarn joining device 37, the yarn catching and guiding device 30, and the unit control unit 50. The winding unit 17 winds the yarn 14 of the yarn supplying unit 15 as a package 22. The yarn joining device 37 joins the lower yarn and the upper yarn when the yarn 14 is divided between the yarn feeding unit 15 and the winding unit 17. The yarn catching and guiding device 30 includes a package-side suction port 33 configured to be movable between a catching position for catching the upper yarn from the package 22 and a guide position for guiding the captured upper yarn to the yarn joining device 37. Prepare. The unit controller 50 controls the movement of the package side suction port 33. The unit controller 50 causes the package-side suction port 33 to stand by at a standby position closer to the capture position than the guide position during the winding operation of the package 22.

  Thereby, when the yarn 14 is divided, the package side suction port 33 does not need to be moved so much, so that the yarn splicing can be performed quickly and the winding efficiency of the automatic winder 1 can be increased.

  In the automatic winder 1 according to the present embodiment, the yarn 14 (for example, the yarn 14 after piecing) from the yarn feeding unit 15 to the winding unit 17 or the yarn 14 from the yarn feeding unit 15 to the yarn joining device 37 is used. A thread retracting lever 34 that retracts (for example, the lower thread before splicing) and enables the package side suction port 33 to move from the guide position to the standby position is provided.

  Thereby, even after the yarn 14 is guided to the yarn joining device 37, the package side suction port 33 can be moved to the standby position. Therefore, even if the package side suction port 33 is moved slowly, the winding efficiency is affected. There is no. Therefore, the life of the package-side suction port 33 can be extended by moving the package-side suction port 33 at a speed that does not apply a load to the package-side suction port 33. Moreover, since the package side suction port 33 moves after the yarn 14 is guided to the yarn joining device 37, the operator can know in advance the timing at which the package side suction port 33 moves.

  Further, in the automatic winder 1 of the present embodiment, the package side suction port 33 is a slit-like suction port that spreads in the winding width direction of the package 22.

  Thereby, the yarn 14 wound around the package 22 can be reliably captured. In the case of having this type of suction port, in the conventional configuration, after guiding the yarn 14 to the yarn joining device 37, the yarn 14 becomes in the way and the suction port cannot be moved to the package 22 side. The yarn retracting lever 34 can be moved toward the package 22 side.

  Further, the automatic winder 1 of this embodiment includes a yarn trap 38 including a first yarn feeding unit side suction port 39. The first yarn feeding unit side suction port 39 is located at a yarn feeding unit side catching position between the yarn joining device 37 and the winding unit 17 during the winding operation of the package 22. The yarn 14 on the yarn feeding section 15 side that is divided between the winding section 17 is captured. Note that the automatic winder 1 of the modified example performs the same operation at the second yarn feeding portion side suction port 63 of the relay pipe 60 instead of the first yarn feeding portion side suction port 39 of the yarn trap 38.

  Accordingly, it is possible to reduce the waste yarn compared to the configuration in which the second yarn feeding unit side suction port 63 of the relay pipe 60 is in a standby state near the yarn feeding unit 15.

  In the present embodiment or the modification, the layout of the relay pipe 60 and the yarn catching and guiding device 30 is shifted so that the relay pipe 60 and the yarn catching and guiding device 30 do not interfere with each other. For example, when viewed from the front of the winding unit 10, the relay pipe 60 can be turned on the right side of the yarn joining device 37, and the yarn catching and guiding device 30 can be turned on the left side of the yarn joining device 37.

  In the automatic winder 1 of this embodiment or the modified example, the clearer 40 and the cutter 43 are disposed between the yarn joining device 37 and the winding unit 17 in the yarn path from the yarn supplying unit 15 to the winding unit 17. Is placed. The first yarn feeding unit side suction port 39 (second yarn feeding unit side suction port 63) captures the yarn 14 on the yarn feeding unit 15 side divided by the cutter 43 between the cutter 43 and the yarn joining device 37. .

  As a result, the yarn 14 can be captured in the vicinity of the cutter 43, so that the yarn 14 can be reliably captured and waste yarn can be reduced.

  Further, in the automatic winder 1 of the modified example, the second yarn feeding unit side suction port 63 moves between the yarn feeding unit side capturing position and the position between the yarn feeding unit 15 and the yarn joining device 37. Configured to be possible.

  Thereby, since the catching of the divided yarn 14 and the catching of the newly supplied yarn 14 of the yarn feeding bobbin can be performed by the same relay pipe 60, the number of parts can be reduced.

  The preferred embodiments and modifications of the present invention have been described above, but the above configuration can be modified as follows, for example.

  The configuration, shape, driving method, and the like of the yarn retracting mechanism are arbitrary and can be changed as appropriate.

  In order to shorten the yarn splicing time, it is preferable to bring the standby position closer to the capture position. Further, the standby position and the capture position may be matched.

  In the above, the traverse is performed by the winding drum 20 in which the traverse groove is formed, but an arm type, belt type, or rotary type traverse device may be used.

  In the above description, the package 22 is driven by the winding drum 20. However, instead of this configuration, the driving force of the motor may be directly transmitted to the shaft portion (winding bobbin 19) of the package 22. it can.

  The present invention can be applied not only to an automatic winder but also to other yarn winding devices such as a winding machine and a spinning machine (for example, an air spinning machine and an open-end spinning machine).

1 Automatic winder (yarn winding device)
10 Winding unit 14 Yarn 15 Yarn feeding portion 16 Yarn feeding bobbin 17 Winding portion 20 Winding drum (contact roller)
25 Unwinding assist device 27 Tension applying device 30 Yarn catching guide device 33 Package side suction port (package side catching portion)
34 Thread retracting lever (Thread retracting mechanism)
35 Lever part 36 Concave member 37 Yarn splicing device 38 Yarn trap (yarn feeding side yarn catching and guiding device)
39 1st yarn feeding part side suction port (yarn feeding part side catching part)
40 Clearer (yarn defect detector)
50 Unit control unit (control unit)
60 Relay pipe (yarn supply side yarn catching and guiding device)
63 2nd yarn feeding part side suction port (yarn feeding part side catching part)

Claims (11)

A yarn feeding section;
A winding unit for winding the yarn of the yarn supplying unit as a package;
A yarn joining device that joins the yarn on the yarn feeding unit side and the yarn on the winding unit side when the yarn is divided between the yarn feeding unit and the winding unit;
A yarn catching guide provided with a package side catching portion configured to be movable between a catching position for catching the yarn on the winding unit side from the package and a guide position for guiding the caught yarn to the yarn joining device. Equipment,
A control unit for controlling movement of the package side catching unit of the yarn catching and guiding device;
With
The control unit causes the package-side capturing unit to stand by at a standby position that is closer to the capturing position than the guide position during winding of the package. The yarn winding device according to claim 1,
The yarn passing from the yarn supplying portion to the winding portion, or the yarn passing from the yarn supplying portion to the yarn joining device is retracted from the yarn path, and from the guide position of the package side catching portion to the standby position. A yarn winding device comprising a yarn retracting mechanism that enables movement. The yarn winding device according to claim 2,
The yarn winding device, wherein the package side catching portion is a slit-like package side suction port extending in a winding width direction of the package. The yarn winding device according to claim 3,
The winding unit includes a contact roller that contacts the package and rotates with the package,
The yarn winding device, wherein a position where the package side suction port faces a contact portion of the package and the contact roller is set as the standby position of the package side capturing portion. A yarn winding device according to any one of claims 2 to 4,
The yarn retracting mechanism is a lever member that retracts the yarn by contacting the yarn passing from the yarn supplying portion to the winding portion or the yarn passing from the yarn supplying portion to the yarn joining device. Yarn winding device. The yarn winding device according to claim 5,
The yarn catching and guiding device pivotally moves the package side catching portion between the catching position and the guiding position,
The yarn winding device according to claim 1, wherein the lever member retracts the yarn in a direction parallel to a turning axis which is a turning center of the package side capturing portion. The yarn winding device according to claim 5 or 6,
The said lever member is provided with the concave member in which the recessed part was formed in the part which contacts a thread | yarn, The yarn winding apparatus characterized by the above-mentioned. The yarn winding device according to claim 7,
The yarn winding device, wherein the concave member is a member in which a concave portion is formed over the entire circumference of a cylindrical member. A yarn winding device according to any one of claims 1 to 7,
Comprising a yarn feeding part side yarn catching guide device provided with a yarn feeding part side catching part capable of catching a yarn;
The yarn feeding unit side catching unit is located at a yarn feeding unit side catching position between the yarn joining device and the winding unit during winding of the package, and the yarn joining device and the winding unit. A yarn winding device characterized in that it captures a yarn on the yarn supplying portion side that is divided between the yarn winding portion and the yarn feeding portion. The yarn winding device according to claim 9,
In the yarn path from the yarn supplying unit to the winding unit, a yarn defect detecting unit for detecting a yarn defect between the yarn joining device and the winding unit, and the yarn defect detecting unit detects a yarn defect. A cutting portion for cutting the traveling yarn when it is detected, and
The yarn feeding device, wherein the yarn feeding unit side catching unit catches the yarn on the yarn feeding unit side divided by the cutting unit between the cutting unit and the yarn joining device. The yarn winding device according to claim 9 or 10,
The yarn feeding unit side catching unit is configured to be movable between the yarn feeding unit side catching position and a position between the yarn feeding unit and the yarn joining device. apparatus.

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