JP2023005530A - yarn winding machine - Google Patents

Abstract

To provide a yarn winding machine that can reduce yarn splicing cycle time.SOLUTION: A winder unit 2 includes a yarn feeding part 6, a yarn storage device 18, a yarn splicing device 14, a downstream yarn blowing part 48, a first catching part 13A that catches the yarn end of the yarn 20 on the side of the yarn accumulating device 18 that has been blown forward by the downstream yarn blowing part 48 and guides the yarn 20 to the yarn splicing device 14, and a second catching part 13B that catches the yarn end of the yarn 20 on a yarn supplying bobbin 21 side and guides the yarn 20 to the yarn splicing device 14. The second catching part 13B is provided in a swingable way between a catching position where the yarn end of the yarn 20 on the yarn supplying bobbin 21 is caught on the upstream side in the traveling direction of the yarn 20 from the position where the first catching part 13A catches the yarn end of the yarn 20 on the yarn accumulating device 18 side and a guide position for guiding the captured yarn 20 to the yarn splicing device 14.SELECTED DRAWING: Figure 2

Description

The present invention relates to a yarn winder.

BACKGROUND ART As a conventional yarn winding machine, for example, one described in Patent Document 1 is known. The yarn winding machine described in Patent Document 1 includes a yarn supplying section that supports a yarn supplying bobbin, and a yarn pooling device that unwinds yarn from the yarn supplying bobbin supported by the yarn supplying section and winds the unwound yarn. a yarn splicing device for splicing the yarn end of the yarn on the yarn supplying bobbin side and the yarn end of the yarn on the yarn accumulating device side; a downstream yarn blowing section that blows downstream in the traveling direction of the yarn, catches the yarn end of the yarn on the side of the yarn accumulating device that has been blown by the downstream yarn blowing section, and guides the yarn to the yarn joining device. A first catching section and a second catching section for catching the yarn end of the yarn on the yarn supplying bobbin side and guiding the yarn to the yarn joining device are provided.

In the yarn winding machine described in Patent Literature 1, the second catching portion is arranged downstream of the first catching portion in the running direction during winding of the yarn. The second catching part catches the yarn blown from the upstream side in the running direction of the yarn by the upstream yarn blowing part, and moves the second catching part back and forth with respect to the yarn path by the advancing/retreating driving part, so that the yarn Guide the yarn to the splicing device.

JP 2017-57075 A

In the conventional yarn winding machine, in order to avoid the yarn on the yarn supplying bobbin side and the yarn on the yarn accumulating device side from entangling, the yarn end of the yarn on the yarn accumulating device side is caught by the first catching section to splice the yarn. After guiding the yarn to the device, the yarn on the yarn supplying bobbin side is caught by the second catching section. Therefore, the second catching section is on standby until the first catching section guides the yarn to the yarn joining device. Yarn winding machines are desired to shorten the cycle time of the yarn splicing operation in order to improve production efficiency. In order to shorten the cycle time of the yarn joining operation, it is necessary to reduce the waiting time of the first catching section and the second catching section.

An object of one aspect of the present invention is to provide a yarn winding machine capable of shortening the cycle time of the yarn splicing operation.

A yarn winding machine according to one aspect of the present invention includes a yarn supplying section that supports a yarn supplying bobbin; a yarn splicing device for splicing the device, the yarn on the yarn supplying bobbin side, and the yarn on the yarn accumulating device side; a blowing section for sending; a first catching section for catching the yarn on the side of the yarn storage device blown by the blowing section and guiding the yarn to the yarn joining device; and a second catching section for guiding the yarn to the yarn joining device, the second catching section catching the yarn on the yarn supplying bobbin side from the position where the first catching section catches the yarn on the yarn accumulating device side. and a second position for guiding the caught yarn to the yarn joining device.

In the yarn winding machine according to one aspect of the present invention, the second catching section catches the yarn at the first position and guides the yarn to the yarn joining device at the second position. The first position is a position where the yarn on the yarn supplying bobbin side is caught on the upstream side in the traveling direction during winding of the yarn from the position where the first catching portion catches the yarn on the yarn accumulating device side. As described above, in the yarn winding machine, the second catching portion catches the yarn on the yarn supplying bobbin side upstream of the first catching portion. The thread caught by the catching part is not entangled. Therefore, in the yarn winding machine, it is not necessary to make the second catching part stand by while the first catching part catches and guides the yarn. Therefore, in the yarn winding machine, the waiting time of the first catching section and the second catching section can be reduced. As a result, the yarn winding machine can shorten the cycle time of the yarn splicing operation.

In one embodiment, the first catching part and the second catching part constitute a part of the catching device, and in the catching device, the first catching part and the second catching part may be integrated. . With this configuration, the configuration can be simplified and the space can be saved.

In one embodiment, the capture device further comprises a first connection connected to the underpressure source and a second connection connected to the underpressure source, wherein the first capture and the first connection A first air flow path for suction air is formed by the part, a second air flow path for suction air is formed by the second capturing part and the second connection part, and the first air flow path and the second air flow The paths may be independent of each other. With this configuration, it is possible to avoid entanglement of the yarn caught by the first catcher and the yarn caught by the second catcher.

In one embodiment, the catching device is rotatably mounted and connected to the second catching part, comprising: a pivoting part for rocking the second catching part; and a driving part for driving the pivoting part. and the rotating portion is provided with a flow rate control portion that controls the circulation and blocking of the suction air flowing through the first air flow path between the first capturing portion and the first connecting portion. , the flow control unit may allow or block the flow of the suction air according to the rotation position of the rotation unit. In this configuration, one driving section can drive the second trapping section and control the flow rate of suction air by the flow control section. Therefore, simplification of a structure can be achieved.

In one embodiment, the flow rate control section blocks suction air when the second trap is positioned at the first position, and blocks suction air when the second trap is positioned other than the first position. may be circulated. With this configuration, no suction air flow is generated in the first trap when the second trap is positioned at the first position. Therefore, the yarn on the yarn feeding bobbin side can be prevented from being sucked and caught by the first catching portion.

According to one aspect of the present invention, it is possible to shorten the cycle time of the yarn splicing operation.

FIG. 1 is a schematic front view showing the overall configuration of an automatic winder according to one embodiment. FIG. 2 is a schematic side view showing a winder unit according to one embodiment. FIG. 3 is a perspective view showing a capture device; FIG. FIG. 4 is a perspective view showing a state in which the second catching portion of the catching device is positioned at the catching position. FIG. 5 is a perspective view showing a state in which the first catching portion of the catching device is positioned at the guiding position.

Preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings. In the description of the drawings, the same or corresponding elements are denoted by the same reference numerals, and overlapping descriptions are omitted. "Upstream" and "downstream" mean upstream and downstream, respectively, in the direction of yarn travel.

As shown in FIG. 1, an automatic winder 1 includes a plurality of winder units (yarn winding machines) 2 arranged side by side, a machine base control device 3, a yarn feeding bobbin supply device 4, a doffing device 5, A blower box (not shown) is provided.

The machine base control device 3 is configured to be able to communicate with each winder unit 2 . An operator of the automatic winder 1 can centrally manage a plurality of winder units 2 by appropriately operating the machine control device 3 . The machine control device 3 controls the operations of the yarn feeding bobbin supply device 4 and the doffing device 5 .

The yarn supplying bobbin supply device 4 sets the yarn supplying bobbins 21 one by one on the transport tray 26 . The yarn supplying bobbin supply device 4 supplies the yarn supplying bobbins 21 set on the transport tray 26 to each of the plurality of winder units 2 .

When the package 30 is fully wound in the winder unit 2 (a state in which a specified amount of yarn 20 is wound), the doffing device 5 travels to the position of the winder unit 2 and picks up the fully wound package 30. Remove. The doffing device 5 sets the winding bobbin 22 on which the yarn 20 is not wound on the winder unit 2 from which the package 30 has been removed.

Next, the configuration of the winder unit 2 will be described. As shown in FIG. 2, the winder unit 2 includes a yarn supplying section 6, a yarn accumulating device 18, a package forming section 8, and a wax applying device . In the winder unit 2, the yarn 20 is unwound from the yarn supplying bobbin 21 of the yarn supplying section 6, and after the unwound yarn 20 is temporarily stored in the yarn accumulating device 18, the package forming section 8 is accumulated in the yarn accumulating device 18. The thread 20 is pulled out and wound on a winding bobbin 22 to form a package 30. - 特許庁

The yarn supplying section 6 is configured to support the yarn supplying bobbin 21 set on the transport tray 26 at a predetermined position and unwind the yarn 20 from the yarn supplying bobbin 21 . When all the yarn 20 is unwound from the yarn supplying bobbin 21 , the yarn supplying section 6 discharges the core tube of the yarn supplying bobbin 21 on which the yarn 20 is not wound, and supplies a new supply from the yarn supplying bobbin supply device 4 . A supply of thread bobbins 21 is received.

The yarn accumulating device 18 is arranged between the yarn supplying section 6 and the package forming section 8 . The yarn accumulating device 18 is provided upstream of the wax applying device 70 in the running direction of the yarn 20 . The yarn accumulating device 18 winds up the yarn 20 unwound by the yarn supplying section 6 and temporarily accumulates it. The yarn accumulating device 18 supplies the accumulated yarn 20 to the package forming section 8 . The yarn accumulating device 18 includes a yarn accumulating roller 32 around which the yarn 20 can be wound, and a roller driving motor 33 that drives the yarn accumulating roller 32 to rotate. The roller drive motor 33 rotates the yarn accumulating roller 32 in the direction in which the yarn 20 from the yarn supplying section 6 is wound. The roller drive motor 33 can also rotate the yarn accumulating roller 32 in the direction opposite to the winding direction.

The package forming section 8 includes a cradle 23 configured so that the winding bobbin 22 can be mounted thereon, and a traverse drum 24 for driving the winding bobbin 22 while traversing the yarn 20 . The package forming section 8 constitutes a winding section. The cradle 23 rotatably supports the winding bobbin 22 (or package 30). The cradle 23 is configured so that the outer peripheral surface of the supported package 30 can come into contact with the outer peripheral surface of the traverse drum 24 .

The traverse drum 24 is rotationally driven by a drive source (an electric motor or the like) (not shown), and rotates while being in contact with the outer peripheral surface of the winding bobbin 22 or the package 30 , thereby rotating the winding bobbin 22 . As a result, the yarn 20 stored in the yarn accumulating device 18 can be unwound, pulled out, and wound onto the winding bobbin 22 . A traverse groove (not shown) is formed on the outer peripheral surface of the traverse drum 24, and the traverse groove enables the yarn 20 to be traversed in a predetermined width. With the above configuration, the package 30 having a predetermined shape can be formed by winding the yarn 20 around the winding bobbin 22 while traversing it.

The wax applying device 70 is arranged between the yarn accumulating device 18 and the package forming section 8 . The wax applying device 70 applies wax to the yarn 20 traveling from the yarn accumulating device 18 toward the package forming section 8 .

The winder unit 2 includes various devices in the yarn traveling path from the yarn supplying section 6 to the package forming section 8 via the yarn accumulating device 18 . Specifically, the yarn path (yarn running path) of the yarn 20 includes the unwinding auxiliary device 10 and the bobbin yarn feeler 11 in order from the upstream yarn feeding section 6 side to the downstream yarn accumulating device 18 side. , a tension applying unit 12, a catching device 13, a yarn splicing device 14, a yarn monitoring device 16, and a downstream yarn blowing unit 48 are arranged.

The unwinding assisting device 10 brings the movable member 27 into contact with the balloon formed above the yarn supplying bobbin 21 by swinging the yarn 20 unwound from the yarn supplying bobbin 21, and appropriately adjusts the size of the balloon. unwinding of the yarn 20 is assisted by controlling the

The bobbin thread feeler 11 is arranged at a position close to the unwinding assist device 10 on the downstream side of the unwinding assist device 10 . The bobbin thread feeler 11 regulates the presence or absence of the thread 20 supplied from the unwinding assist device 10 .

The tension applying section 12 applies a predetermined tension to the running yarn 20 . The tension applying unit 12 applies a predetermined tension to the yarn 20 based on the tension of the yarn 20 detected by a tension sensor (not shown). The tension applying section 12 is of a gate-type configuration in which movable comb teeth are arranged with respect to fixed comb teeth, and a predetermined resistance is applied by running the thread 20 between the comb teeth. The comb teeth on the movable side are configured to be movable by, for example, a solenoid so that the comb teeth are engaged or disengaged. Thereby, the tension applying section 12 can adjust the tension applied to the thread 20 . The configuration of the tension applying section 12 is not particularly limited, and may be, for example, a disk-type tension applying section.

The catching device 13 is arranged downstream of the tension applying section 12 . The catching device 13 has a first catching portion 13A and a second catching portion 13B. In this embodiment, the first catching portion 13A and the second catching portion 13B are integrated and configured as one component. Each of the first trapping portion 13A and the second trapping portion 13B is connected to a negative pressure source (not shown).

The first catching portion 13A is configured as a tubular member having an opening formed at its tip. The first catching portion 13A generates a suction air flow during yarn splicing to suck and catch the yarn 20 on the yarn accumulating device 18 side.

The second catching portion 13B is configured as a tubular member having an opening formed at the tip. The second catching portion 13B is provided swingably. The second catching portion 13B has a catching position (first position) (the position indicated by the solid line in FIG. 2) for catching the yarn 20 supplied from the unwinding assist device 10, and a guiding position for guiding the yarn 20 to the yarn joining device 14. It swings between the position (second position) (the position indicated by the dashed line in FIG. 2). The catching position may be the standby position of the second catching part 13B.

At the catching position, the second catching section 13B generates a suction air flow on the tip side thereof in a state of being close to the yarn path on the downstream side of the bobbin thread feeler 11, thereby catching the yarn end from the yarn supplying bobbin 21. is aspirated and captured. When the yarn 20 is cut by the cutter 15, the second catching portion 13B sucks and catches the yarn end of the cut yarn 20 on the yarn supplying bobbin 21 side. Further, the second catching part 13B may be configured to suck and remove fluff or the like adhering to the running yarn 20 by generating a suction air flow on the tip side thereof.

When the yarn 20 is caught by the second catching portion 13B, immediately after the new yarn supplying bobbin 21 is supplied to the yarn supplying portion 6, the position on the downstream side of the bobbin thread feeler 11 (the tip of the second catching portion 13B ) is provided for blowing the yarn end.

The auxiliary blowing unit 28 blows compressed air into the inside of the hollow carrier tray 26 and the yarn supplying bobbin 21 , thereby blowing the yarn 20 of the yarn supplying bobbin 21 onto the leading end of the yarn supplying bobbin 21 . An air flow that blows toward the bobbin thread feeler 11 side is formed. When the newly supplied yarn supplying bobbin 21 is supported by the yarn supplying portion 6, the auxiliary blowing portion 28 operates to reliably move the yarn end of the yarn supplying bobbin 21 side toward the bobbin thread feeler 11 side. can send.

The yarn splicing device 14 splices the split yarn 20 . The yarn splicing device 14 detects a yarn defect by the yarn monitoring device 16 and cuts the yarn 20 with the cutter 15, when the yarn 20 being unwound from the yarn supplying bobbin 21 is cut, or when the yarn is cut. When the yarn 20 between the yarn supplying bobbin 21 and the yarn accumulating device 18 is cut, such as when the bobbin 21 is replaced, the yarn 20 on the yarn supplying bobbin 21 side and the yarn accumulating device 18 are separated from each other. The thread 20 on the side is spliced. The yarn splicing device 14 is arranged at a position slightly retracted from the yarn path. The yarn splicing device 14 can connect the introduced yarn ends to make the yarn 20 continuous. As the yarn splicing device 14, a device using a fluid such as compressed air or a mechanical device can be used.

The yarn monitoring device 16 detects yarn defects such as slabs and foreign matter contamination by monitoring the thickness of the yarn 20 with an appropriate sensor. A cutter 15 is arranged at a position close to the yarn monitoring device 16 on the upstream side of the yarn monitoring device 16 . The cutter 15 cuts the yarn 20 as soon as the yarn monitoring device 16 detects a yarn defect. The cutter 15 and the thread monitoring device 16 are housed in a common housing 19 . A housing 19 containing the yarn monitoring device 16 is arranged downstream of the yarn splicing device 14 .

The downstream yarn blowing unit 48 is an air sucker device arranged at a position close to the yarn accumulating device 18 on the upstream side of the yarn accumulating device 18 . The downstream yarn blowing section 48 blows out compressed air to suck the yarn end on the yarn accumulating device 18 side present on the surface of the yarn accumulating roller 32, blows it off, and sends the air flow to the first catching section 13A. Form. Specifically, the downstream yarn blowing unit 48 includes a thin tubular guide member (not shown) through which the yarn 20 can pass, a yarn guide member 60 which is a curved tubular member, It has An outlet for the thread 20 is formed at one end of the guide member. The yarn guide member 60 is provided so as to be close to the outlet of the downstream yarn blow-off section 48 . Openings are formed at both ends of the thread guide member 60 in the longitudinal direction.

The yarn guide member 60 is arranged with the opening on one end facing the outlet of the downstream yarn blow-off portion 48 and the opening on the other end facing the first catching portion 13A. A guide path is formed inside the thread guide member 60 . The guide path connects openings at both ends of the yarn guide member 60 so as to bypass the yarn monitoring device 16, the yarn joining device 14, and the like. A storage side yarn end catching device 50 is configured by the downstream yarn blowing portion 48, the yarn guiding member 60, and the first catching portion 13A.

When the yarn 20 is separated between the yarn supplying bobbin 21 and the yarn accumulating device 18, the downstream yarn blowing portion 48 captures the yarn 20 on the yarn accumulating device 18 side to guide the yarn guiding member 60. Then, the yarn 20 is pulled out along the guide path and caught by the first catching portion 13A. Note that since the thread guide member 60 is formed with an unillustrated penetrating slit over its entire length, the thread 20 is pulled from the inside of the thread guide member 60 in a state in which the thread 20 is captured by the first catching portion 13A. can be pulled out. As described above, the yarn 20 on the side of the yarn accumulating device 18 can be blown forward by the downstream yarn blowing section 48 and guided toward the yarn joining device 14 side.

Each winder unit 2 has a control section 25 . The control unit 25 includes hardware such as a CPU, ROM, and RAM (not shown). Software such as a control program is stored in the RAM. The control unit 25 controls each component of the winder unit 2 through cooperation of hardware and software. The control unit 25 is configured to be able to communicate with the machine control device 3 . Thereby, the operations of the plurality of winder units 2 provided in the automatic winder 1 can be centrally managed by the machine control device 3 .

Subsequently, the capture device 13 will be described in detail with reference to FIGS. 3, 4 and 5. FIG. 3 and 4 show a state where the second catching portion 13B is located at the catching position. FIG. 5 shows a state in which the second catching portion 13B is located at the guiding position.

As shown in FIGS. 3, 4, and 5, the catching device 13 includes a first catching portion 13A, a second catching portion 13B, a main body portion 13C, a rotating portion 13D, and a first connecting portion 13E. , and a second connection portion 13F.

13 A of 1st capture|acquisition parts are comprised as a cylindrical member in which the opening was formed in the front-end|tip part as mentioned above. The first catching portion 13A is formed integrally with the body portion 13C.

As described above, the second catching portion 13B is configured as a cylindrical member having an opening formed at its tip. The second catching portion 13B includes a linear portion and a curved portion, and has a substantially U shape.

A clamp portion 13G is provided at the tip of the second catching portion 13B. The clamp section 13G clamps the thread 20 sucked by the second catching section 13B with the tip of the second catching section 13B. The clamping portion 13G releases the yarn 20 from being clamped when the second catching portion 13B is positioned at the catching position and the guiding position, and holds the yarn 20 when the second catching portion 13B moves from the catching position to the guiding position. pinch. The clamp portion 13G is opened by coming into contact with the first contact portion 13H or the second contact portion 13I to release the thread 20 from being clamped. The first contact portion 13H is arranged at a position with which the clamp portion 13G contacts when the second catching portion 13B is positioned at the catching position. The first contact portion 13H is installed on a frame (not shown) by means of a bracket B1. The second contact portion 13I is arranged at a position with which the clamp portion 13G contacts when the second catching portion 13B is positioned at the guide position. The second contact portion 13I is installed on a frame (not shown) by means of a bracket B2.

13 C of main-body parts are comprised as a cylindrical member. The body portion 13C is fixed to the base body B. As shown in FIG. The body portion 13C is fixed to the base body B at one end in the longitudinal direction. The body portion 13C is fixed to the base body B so as to protrude from one surface of the base body B in a direction orthogonal to the one surface. The first catching portion 13A is provided on the side surface of the body portion 13C. The first catching portion 13A is provided so as to protrude toward the thread guide side and face obliquely upward when viewed in the longitudinal direction (extending direction) of the main body portion 13C.

The rotating portion 13D is configured as a cylindrical member. The rotating portion 13D is housed in the body portion 13C. The rotating portion 13D is driven by a driving motor (driving portion) 13J. The other end of the rotating portion 13D is connected to the output shaft of the drive motor 13J via a pulley and belt (not shown). The drive motor 13J is, for example, a stepping motor. The drive motor 13J is fixed to the base body B. As shown in FIG. The operation of the drive motor 13J is controlled by the controller 25. FIG. The other end of the rotating portion 13D is connected to the second catching portion 13B. As a result, the second catching portion 13B swings along with the rotation of the rotating portion 13D.

The rotating portion 13D is provided with a flow control portion 13K and a communication portion 13L. The flow control portion 13K and the communication portion 13L are provided independently in the rotating portion 13D. A partition is provided between the flow rate control section 13K and the communication section 13L. The flow rate control section 13K controls the circulation and blockage of suction air flowing through the air flow path between the first capturing section 13A and the first connecting section 13E. The flow control unit 13K functions as a shutter that circulates and blocks suction air. The flow control portion 13K is formed in a groove shape, for example, by cutting out a part of the rotating portion 13D.

The flow rate control section 13K allows or blocks the flow of suction air according to the rotational position of the rotational section 13D, that is, the position of the second capturing section 13B. As shown in FIG. 5, when the second catching portion 13B is located at a position other than the catching position (for example, the guiding position), the flow control portion 13K controls the flow rate between the first catching portion 13A and the first connecting portion 13E. , the suction air is allowed to circulate. As a result, a suction airflow is generated at the tip of the first catching portion 13A. As shown in FIG. 4, the flow rate control section 13K prevents suction air from flowing between the first catching section 13A and the first connecting section 13E when the second catching section 13B is positioned at the catching position. (so that the suction air is reduced). That is, the flow rate control portion 13K blocks the flow of suction air between the first catching portion 13A and the first connecting portion 13E when the second catching portion 13B is positioned at the guiding position. As a result, no suction air flow is generated at the tip of the first catching portion 13A.

The flow control unit 13K controls the circulation and blocking of the suction air by rotating the rotating portion 13D driven by the drive motor 13J. That is, the flow control unit 13K opens and closes the air flow path by driving the drive motor 13J.

The communicating portion 13L allows the second catching portion 13B and the second connecting portion 13F to communicate with each other. The communicating portion 13L allows communication between the second catching portion 13B and the second connecting portion 13F over the entire movable range of the second catching portion 13B. In other words, the communicating portion 13L is configured so that the second catching portion 13B and the second catching portion 13B are in a state where the second catching portion 13B is positioned at the catching position and the guiding position, and a state where the second catching portion 13B is moving between the catching position and the guiding position. It communicates with the second connection portion 13F. As shown in FIGS. 4 and 5, the communicating portion 13L constantly generates a suction air flow on the tip side of the second catching portion 13B.

The first connection portion 13E is configured as a cylindrical member. The first connection portion 13E is connected to a negative pressure source (not shown). The first connecting portion 13E forms a first air flow path for suction air together with the first trapping portion 13A. The first connection portion 13E and the first trapping portion 13A communicate with each other to form a first air flow path, thereby generating a suction air flow at the tip of the first connection portion 13E. The first connection portion 13E is connected to the side surface of the body portion 13C. The first connecting portion 13E is arranged on the same straight line as the first catching portion 13A when viewed from the direction along the thread path of the thread 20 . As a result, since the air flow path does not bend, it is possible to suppress a decrease in the suction air flow and prevent the thread 20 from becoming entangled in the first air flow path.

The second connection portion 13F is configured as a cylindrical member. The second connection portion 13F is connected to a negative pressure source (not shown). The second connecting portion 13F forms a second air flow path for suction air together with the second trapping portion 13B. The first airflow path and the second airflow path are independent of each other. The second connection portion 13F is connected to the side surface of the body portion 13C. The second connection portion 13F is connected to the other end side in the longitudinal direction of the main body portion 13C rather than the first connection portion 13E.

Next, the yarn splicing operation in the winder unit 2 will be described. A yarn splicing operation at the time of yarn cutting, in which the yarn monitoring device 16 detects a yarn defect and the yarn 20 is cut by the cutter 15, will be described below as an example.

When the yarn 20 is cut by the cutter 15, the second catching portion 13B sucks and catches the yarn 20 on the yarn supplying bobbin 21 side at the catching position. At this time, the clamp portion 13G is in contact with the first contact portion 13H and is in an open state. When the yarn 20 is caught by the second catching portion 13B, the rotating portion 13D rotates and the second catching portion 13B moves from the catching position to the guiding position. When the second catching portion 13B starts moving, the clamp portion 13G is separated from the first contact portion 13H and the clamp portion 13G is closed. As a result, the yarn 20 is clamped by the clamp portion 13G and held by the second catching portion 13B.

Subsequently, the yarn 20 is guided to the yarn joining device 14 when the second catching portion 13B is positioned at the guiding position. Further, when the second catching portion 13B is positioned at the guide position, the clamp portion 13G contacts the second contact portion 13I. As a result, the clamp portion 13G is opened, and the thread 20 is released.

Further, when the yarn 20 is cut by the cutter 15 , the downstream yarn blowing section 48 captures the yarn 20 on the yarn accumulating device 18 side and blows it to the guide path of the yarn guide member 60 . The first catching portion 13A catches the thread 20 pulled out along the guide path of the thread guiding member 60 when the second catching portion 13B starts to move to the guiding position. When the yarn 20 is caught by the first catching portion 13A, the yarn 20 on the yarn accumulating device 18 side is guided to the yarn joining device 14 . The yarn splicing device 14 splices the yarn 20 guided by the first catching portion 13A and the yarn 20 guided by the second catching portion 13B. With the above, the yarn splicing operation is completed.

As described above, in the winder unit 2 of the automatic winder 1 according to this embodiment, the second catching section 13B catches the yarn 20 at the catching position and guides the yarn 20 to the yarn joining device 14 at the guiding position. The catching position is positioned in the traveling direction during winding of the yarn 20 from the position where the first catching portion 13A catches the yarn end of the yarn 20 on the yarn accumulating device 18 side for the yarn end of the yarn 20 on the yarn supplying bobbin 21 side. This is the position to capture on the upstream side. Thus, in the winder unit 2, the second catching portion 13B catches the yarn end of the yarn 20 on the yarn supplying bobbin 21 side upstream of the first catching portion 13A. The yarn 20 caught by the 13A and the yarn 20 caught by the second catching part 13B are not entangled. Therefore, in the winder unit 2, the second catching part 13B does not need to wait while the first catching part 13A catches and guides the yarn 20. FIG. Therefore, in the winder unit 2, the waiting time of the first catching portion 13A and the second catching portion 13B can be reduced. As a result, the winder unit 2 can shorten the cycle time of the yarn splicing operation.

In the conventional yarn splicing device, the yarn on the yarn supplying bobbin side supplied from the unwinding auxiliary device is blown downstream by an upstream yarn blowing unit (air sucker device), and the yarn is caught by the second catching unit. ing. In this configuration, since the distance between the upstream yarn blowing portion and the second catching portion is long, if the yarn is not blown up for some reason, the yarn cannot be caught by the second catching portion. obtain. In the winder unit 2 according to the present embodiment, the second catching portion 13B is positioned in the running direction during winding of the yarn 20 from the position where the first catching portion 13A catches the yarn end of the yarn 20 on the yarn accumulating device 18 side. The yarn end of the yarn 20 on the yarn supplying bobbin 21 side is caught on the upstream side. That is, the second catching portion 13B catches the yarn 20 at a position close to the unwinding assist device 10. As shown in FIG. Therefore, it is possible to suppress the occurrence of a problem that the yarn 20 on the yarn supplying bobbin 21 side cannot be caught by the second catching portion 13B.

In the winder unit 2 according to this embodiment, the first catching portion 13A and the second catching portion 13B constitute a part of the catching device 13. As shown in FIG. In the catching device 13, the first catching portion 13A and the second catching portion 13B are integrated. With this configuration, the configuration can be simplified and the space can be saved.

In the winder unit 2 according to this embodiment, the catching device 13 includes a first connection portion 13E connected to the negative pressure source and a second connection portion 13F connected to the negative pressure source. The first trapping portion 13A and the first connecting portion 13E form a first air flow path for suction air. The second trapping portion 13B and the second connecting portion 13F form a second air flow path for suction air. The first air flow path and the second air flow path are independent of each other. With this configuration, it is possible to avoid entanglement of the 20 yarns caught in the first catching portion 13A and the yarn 20 caught in the second catching portion 13B.

In the winder unit 2 according to the present embodiment, the catching device 13 is rotatably provided and connected to the second catching portion 13B, and has a rotating portion 13D that swings the second catching portion 13B, and a drive motor 13J that drives the rotating portion 13D. The rotating portion 13D is provided with a flow rate control portion 13K for controlling circulation and blockage of the suction air flowing through the first air flow path between the first capturing portion 13A and the first connecting portion 13E. The flow rate control unit 13K circulates or blocks the suction air according to the rotation position of the rotation unit 13D. In this configuration, the single drive motor 13J can drive the second trapping section 13B and control the flow rate of the suction air by the flow control section 13K. Therefore, simplification of a structure can be achieved.

In the winder unit 2 according to the present embodiment, the flow rate control section 13K blocks the suction air when the second catching section 13B is positioned at the catching position, and when the second catching section 13B is positioned at a position other than the catching position. Suction air is circulated when it is on. In this configuration, when the second catching portion 13B is positioned at the catching position, no suction airflow is generated in the first catching portion 13A. Therefore, it is possible to prevent the yarn end of the yarn 20 on the yarn supplying bobbin 21 side from being sucked and caught by the first catching portion 13A.

Although the embodiments of the present invention have been described above, the present invention is not necessarily limited to the above-described embodiments, and various modifications can be made without departing from the scope of the invention.

In the above-described embodiment, in the capturing device 13, the form in which the first capturing portion 13A and the second capturing portion 13B are integrated has been described as an example. However, the first catching portion and the second catching portion may be configured independently of each other. That is, each of the first catching portion and the second catching portion may be configured as separate components.

In the above-described embodiment, an example is described in which the capture device 13 includes the first connection portion 13E and the second connection portion 13F. However, the first catching portion 13A and the second catching portion 13B may be connected to one connecting portion.

In addition to the above embodiment, a tension applying section may be further provided between the yarn accumulating device 18 and the wax applying device 70 .

2 Winder unit (yarn winder) 6 Yarn feeding section 13 Catching device 13A First catching section 13B Second catching section 13D Rotating section 13E First connecting section 13F Second connection section 13J drive motor (driving section) 13K flow control section 14 yarn splicing device 18 yarn pooling device 20 yarn 21 yarn supplying bobbin.

Claims (5)

a yarn supplying section that supports the yarn supplying bobbin;
a yarn storage device that unwinds a yarn from the yarn supplying bobbin supported by the yarn supplying section and winds the unwound yarn;
a yarn splicing device that splices the yarn on the yarn supplying bobbin side and the yarn on the yarn accumulating device side;
a blowing unit that blows the yarn from the yarn accumulating device to the downstream side in the running direction during winding of the yarn;
a first catching section that catches the yarn on the yarn accumulating device side blown forward by the blowing section and guides the yarn to the yarn joining device;
a second catching section that catches the yarn on the yarn supplying bobbin side and guides the yarn to the yarn joining device;
A first position where the second catching section catches the yarn on the yarn supplying bobbin side upstream in the traveling direction from a position where the first catching section catches the yarn on the yarn accumulating device side. and a second position for guiding the caught yarn to the yarn joining device. The first catching section and the second catching section constitute part of a catching device,
The yarn winding machine according to claim 1, wherein in the catching device, the first catching section and the second catching section are integrated. The capture device is
a first connection connected to a negative pressure source;
a second connection connected to a negative pressure source;
A first air flow path for sucked air is formed by the first capturing portion and the first connecting portion,
A second air flow path for sucked air is formed by the second capturing portion and the second connecting portion,
The yarn winding machine according to claim 2, wherein the first air flow path and the second air flow path are independent of each other. The capture device is
a rotating portion rotatably provided and connected to the second catching portion for swinging the second catching portion;
a drive unit that drives the rotating unit,
The rotating portion is provided with a flow rate control portion that controls the flow and blockage of the suction air flowing through the first air flow path between the first capturing portion and the first connecting portion,
4. The yarn winding machine according to claim 3, wherein the flow rate control section circulates or blocks the suction air according to the rotational position of the rotational section. The flow rate control section blocks the suction air when the second trapping section is positioned at the first position, and blocks the suction air when the second trapping section is positioned at a position other than the first position. The yarn winding machine according to claim 4, wherein air is circulated.

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