JP3405236B2 - Yarn suction device and yarn suction / cutting device - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to yarn suction and yarn cutting in a yarn winding device that traverses and winds a yarn.

[0002]

2. Description of the Related Art Conventionally, as shown in FIG. 5, a yarn hooking device 1 includes a yarn cutting device 2, a yarn suction device 3 and a yarn hooking arm 10, and bobbins B while traversing a traversing plane P. The yarn Y to be wound up is cut by the yarn cutting device 2, the upstream side of the cut yarn Y is sucked by the yarn suction device 3, and the sucked yarn Y is hooked by the swinging yarn hooking arm 10 and emptied. It is configured to be passed to the end of the bobbin. The yarn suction device 3 includes a yarn suction path 5 having a suction port 4 opened to face the traverse plane P.
And a plate-like lid 6 that is provided to open and close the suction port 4 and that rotates in the direction of arrow A. The yarn cutting device 2 has a yarn guide surface 7 and a cutting portion 8 at a position downstream of the suction port 4 in the yarn traveling direction (arrow C direction) and closer to the inner side of the traverse plane P.
A guide / cutting tool 9 provided with a guide / cutting tool 9 is provided, and the guide / cutting tool 9 is moved back and forth between a lower standby position that does not intersect the traverse plane P and an upper guide / cutting position that intersects the traverse plane P. I am doing it.

When cutting the yarn Y for doffing,
The plate-like lid 6 of the thread suction device 3 is rotated to the open position (the position shown by the solid line in the figure) to open the suction port 4, and the guide / cutting tool 9 of the thread cutting device 2 is raised to the guide / cut position. Let When the traversing yarn T traverses the guide / cutting tool 9 of the yarn cutting device 2 in this state and traverses in the opposite direction,
The yarn guiding surface 7 of the yarn cutting device 2 captures the cutting portion 8
And the upstream side thus cut is sucked into the suction port 4 of the yarn suction device 3. When the yarn Y is hung on the empty bobbin, the guide / cutting tool 9 of the yarn cutting device 2 is lowered to the standby position, and then the yarn Y being sucked is hooked by the swinging yarn hooking arm 10 and passed to the end of the empty bobbin. At the same time, the plate-like lid 6 of the yarn suction device 3 is rotated to the closed position (the position indicated by the chain double-dashed line in the figure) to close the suction port 4.

[0004]

By the way, the yarn suction device 3 needs to separate the suction port 4 from the traverse plane P so that the yarn Y being wound does not come into contact with the plate-like lid 6.
The yarn Y cut on the traverse plane P may not be sucked into the suction port 4. Especially, high-speed winding (for example, 1200
(m / min), the yarn tension becomes high, so that it is noticeable that the yarn cannot be sucked. However, when the suction of the cut yarn Y fails, the yarn cannot be hooked by the yarn hooking arm 10, so that it takes a lot of time to recover for the automatic winding again, and the winding work efficiency is improved. It will be significantly reduced. Therefore, the present invention is directed to a yarn suction device and a yarn suction / suction device capable of reliably sucking a yarn.
The purpose is to provide a cutting device.

[0005]

[Means for Solving the Problems] The means adopted by the present invention as set forth in claim 1 for surely sucking a yarn and for simplifying the structure is a yarn suction so as to face a traversing plane of the yarn. opening the suction port of the road, the thread guide member to advance and retreat between a guide position intersecting the standby position and the traversing plane which does not cross the traverse plane is provided, the thread guide member, upon advancing to the guide position A yarn suction device provided with a yarn guide surface that extends from a traversing plane to a position near the suction port,
Is equipped with a lid that opens and closes the suction port, and moves to the guide position.
When moving forward, open the suction port and return to the standby position
When retracting, the suction port is covered with a lid.
This is a yarn suction device. According to the present invention, when the yarn guide tool is retracted to the standby position, the yarn traverses the traverse plane without traversing the yarn guide tool and traverses the yarn guide tool to advance the yarn guide tool to the guide position. In this case, the yarn passing while traversing is captured by the yarn guide surface, and as the captured yarn moves in the traverse direction, it is guided by the yarn guide surface and guided to the vicinity of the suction port. Further, in the present invention,
Since the thread guide is equipped with a lid, the thread guide is in the standby position.
The suction port with the lid, the thread guide
When the tool is advanced to the guide position, open the suction port.
It

[0006]

In order to ensure the suction of the yarn and to simplify the structure, the means adopted by the present invention according to the second aspect is such that the suction port of the yarn suction path is located so as to face the traversing plane of the yarn.
Standing position and traverse plane that are open and do not intersect the traverse plane
A thread guide that moves back and forth between the guide position intersecting with
The thread guide is a traverse plane when it is advanced to the guide position.
From the above to the vicinity of the suction port
In the thread suction device, the forward operation of the thread guide is
Operation with compressed air and retracting operation of the thread guide
And the compressed air supplied for suction at the suction port.
Open the air suction line by connecting it to the operation tool and the thread suction line.
A common compressed air passage with a closing valve,
With the valve, move the thread guide to the guide position with the operating tool and
Set the suction port to the suction state, and close the open / close valve to
A thread suction device characterized by being retracted by a spring to a standby position
It is a place. In the present invention, the thread guide is moved to the standby position.
When retracted, the thread will traverse without touching the thread guide.
Passes while traversing the swing plane and guides the thread guide
When it is moved forward,
The thread is caught by the thread guide surface and the caught thread traverses.
As it moves in the direction
Be guided by. Further, according to the present invention, when the on-off valve is opened, compressed air is supplied to the operating tool and the thread suction passage, so that the thread guiding tool is moved forward by the operating tool and the suction port is brought into the suction state.

The means adopted by the present invention as set forth in claim 3 for cutting the yarn in a state where suction is reliably performed is the yarn suction device according to claim 1 or 2 and the captured yarn up to the cutting portion. What is claimed is: 1. A yarn suction / cutting device comprising: a yarn guiding device for guiding; a yarn cutting device provided so as to advance and retract between a standby position that does not intersect with the traversing plane and a yarn catching position. After advancing the yarn guide tool to the guide position, a control tool for controlling each activation of the yarn suction device and the yarn cutting device is provided so as to advance the yarn guide tool of the yarn cutting device to the yarn catching position. It is a yarn suction / cutting device characterized in that In the present invention, by activating the yarn guide of the yarn suction device by the control tool and then activating the yarn guide of the yarn cutting device,
Since the yarn is caught by the yarn guide surface of the yarn suction device and guided to the vicinity of the suction port and then cut by the yarn cutting device, the cut yarn can be reliably sucked into the suction port.

[0009]

BEST MODE FOR CARRYING OUT THE INVENTION A yarn suction device and a yarn suction / cutting device according to the present invention (hereinafter referred to as "the present invention device") will be described below with reference to the embodiments shown in the drawings. The device of the present invention can be used, for example, in a draw false twisting machine that winds a synthetic fiber at a yarn speed of 1600 m / min. In the draw false twisting machine, the synthetic yarn unwound from the yarn supply package is
The yarn feeding device allows the yarn to be continuously fed to the downstream side at all times, even during the interruption of winding. 1 to 4 show an embodiment of the device of the present invention. FIG. 1 is a top view of a yarn hooking device equipped with the device of the present invention, FIG. 2 is a side view of the yarn hooking device, and FIG. 2 is a partial cross-sectional view showing a state in which the yarn can be cut along the line D-D, and FIG. 4 is a diagram showing a state in which the yarn cannot be cut along the line D-D in FIG.

The yarn hooking device 11 comprises a yarn cutting device 12, a yarn suction device 13 and a yarn hooking arm 10, and a traverse plane P.
The yarn Y wound on the bobbin B while traversing the upper part is cut by the yarn cutting device 12, and the upstream side of the cut yarn Y is sucked by the yarn suction device 13 to swing the yarn Y being sucked. It is configured to be hooked by the thread hooking arm 10 and passed to the empty bobbin end portion Ba.

The yarn suction device 13 has a main body 17 having a suction port 14 opened so as to face the traversing plane P of the yarn Y, and a yarn guide 16 having a main body 17 on which a pivotally supported 17a is supported.
A spring 18 that is arranged between the main body 17 and the thread guide 16 to press the thread guide 16 in the lying direction;
And an operation tool 19 arranged between the thread guide tool 16 and the thread guide tool 16 for pressing the thread guide tool 16 in the upright direction. The main body 17 includes a yarn suction passage 15 that communicates the suction port 14 that is opened on the upper surface with a yarn discharge pipe 20 that is joined to the lower end, and an opening / closing valve 24.
A compressed air passage 22 communicating with a compressed air pipe 21
And a nozzle hole 23 that communicates the compressed air passage 22 with the yarn suction passage 15 and ejects compressed air to the yarn suction passage 15. When the opening / closing valve 24 is opened, the nozzle hole 23 extends to the yarn suction passage 15. By injecting compressed air, a suction pressure is generated at the suction port 14. In the main body part 17, the compressed air ejected from the nozzle holes 23 forms a swirling flow in the yarn suction passage 15, and the swirling flow maintains a stable air flow velocity on the downstream side of the yarn suction passage 15, The Y is surely sucked and captured.

The yarn guiding tool 16 advances and retracts between a standby position E (position shown in FIG. 4) which does not intersect the traverse plane P and a guide position F (position shown in FIG. 3) which intersects the traverse plane P. As described above, the bobbin B is provided so as to be oscillating on its back and forth about an axis orthogonal to the axial direction of the bobbin B. The yarn guide 16 includes a lid 16 that covers the suction port 14 when the yarn guide 16 falls down to the standby position E.
a and a bent piece portion 16b connected to both longitudinal edges of the lid portion 16a,
16b, and a sled-shaped thread guide surface 16c is formed at the lower end edge of each bent piece 16b. Both yarn guiding surfaces 16c, 16c of the yarn guiding tool 16 are formed so as to reach a posture from the traverse plane P to the vicinity of the suction port 14 when the yarn guiding tool 16 advances to the guiding position F (the position shown in FIG. 3). There is. Thread guide surface 16
c has a portion that covers the upper portion of the yarn Y captured at the guide position F, and in the case of a thick yarn having a high winding tension, the yarn Y is prevented from jumping upward during cutting. .
When the yarn guiding tool 16 is retracted to the standby position E (the position shown in FIG. 4), the yarn Y passes on the traversing plane P while traversing without traversing the yarn guiding tool 16. When the yarn guide 16 is advanced to the guide position F (the position shown in FIG. 3), the yarn Y passing while traversing is caught by the yarn guide surfaces 16c, 16c when traveling to one side in the traverse direction. At the same time, it is guided in the traverse direction in the captured state and guided by the yarn guide surfaces 16c, 16c to be guided to the vicinity of the suction port 14. The bent piece portion 16b may be provided only on one edge in the longitudinal direction of the lid portion 16a.

The thread guide 16 includes thread guide surfaces 16c, 1
Although the structure is simplified by integrating 6c and the lid portion 16a, the lid portion 16a may be omitted. In this case, although the yarn suction device 13 is not shown,
An opening / closing valve is provided in the middle of the thread suction passage 15 instead of the lid portion 16a, and the opening / closing valve and the thread suction device 13 are operated simultaneously or substantially simultaneously by a common drive source, so that the thread guide tool 16 is operated. At the standby position E, the on-off valve is closed,
When the thread guide 16 is in the guide position F, the on-off valve is opened to bring the suction port 14 into the suction state.

In the operating tool 19, the piston 25 is vertically movably arranged in the insertion hole 26 formed in the main body 17, and the compressed air passage 22 is communicated with the insertion hole 26. When the opening / closing valve 24 of the compressed air pipe 21 is opened, the operation tool 19 uses the compressed air guided from the compressed air passage 22 to the insertion hole 26 to raise the piston 25 to move the thread guide tool 16 to the guide position F. The spring 18 that presses and compresses stores a repulsive elastic force. When the on-off valve 24 is closed to stop the supply of compressed air, the operation tool 19 presses the thread guide tool 16 and the piston 25 by the repulsive elastic force of the spring 18, and compresses the residual air in the insertion hole 26. By being discharged to the yarn suction passage 15 through the air passage 22 and the nozzle hole 23,
The yarn guide 16 is laid down to the standby position E.

The yarn cutting device 12 has a yarn guiding tool 29 for guiding the captured yarn Y to the cutting portion 28 between a standby position G (see FIG. 2) where the traversing plane P is not crossed and a yarn catching position H. It is set up to move forward and backward. The yarn catching position H means the yarn guiding surfaces 16c, 1 of the yarn guiding tool 16 of the yarn suction device 13.
The height position at which the yarn Y traversing while being guided by 6c can be captured. The yarn guiding tool 29 is the yarn suction device 1
3 is arranged downstream of the yarn guiding tool 16 in the yarn traveling direction and at a position where the yarn Y is cut while a part of the yarn Y is captured by the yarn guiding tool 16 (near the suction port 14), Thread Y
The direction of introduction of the yarn (direction of arrow K in FIG. 1) is the yarn suction device 1
The direction of introduction of the yarn Y in the yarn guide tool 16 of No. 3 (direction of arrow M in FIG. 1) is set to be the opposite direction. When the yarn guiding tool 29 moves forward to the yarn catching position H, the yarn guiding tool 29 receives the yarn Y traversing and moving toward the yarn guiding tool 29 while being caught by the yarn guiding tool 16 of the yarn suction device 13. ing. The thread guide tool 29 is formed on the swing tool 30. As shown in FIG. 2, the swinging tool 30 is swingably supported by a fixed bracket 31 and is operated by an operating tool (not shown) including an air cylinder or a solenoid via an operating rod 33. The guide tool 29 is moved back and forth between the standby position G and the yarn catching position H. The rocking tool 30 is provided with a cutting portion 28 made of a blade or a heat wire, and cuts the yarn Y guided by the yarn guiding tool 29.

When the yarn guide 16 of the yarn suction device 13 is advanced (raised) to the guide position F, the yarn Y is traversed and moved by the traverse guide 34 in the right direction in FIG. When it comes, it is caught by the thread guiding surfaces 16c, 16c of the thread guiding tool 16, and when moving further to the right, the thread guiding tool 1
The traverse state is centered around 6. After the yarn Y is caught by the yarn guiding tool 16, the yarn Y traverses to the left in the drawing and moves, and when the yarn guiding tool 29 of the yarn cutting device 12 advances to the yarn catching position H. When the yarn guiding device 29 of the yarn cutting device 12 is captured and cut by the yarn cutting device 12 and is retracted to the standby position G, the traversing state is continued without being cut. When the yarn guide 29 is retracted to the standby position G, the yarn Y being traversed in the left direction in the drawing with the yarn guide 16 as the traverse fulcrum is not cut after passing the predetermined position. The capture by 16 is released.

The yarn cutting device 12 and the yarn suction device 1
The yarn suction / cutting device composed of 3 is operated based on a control signal of a control tool (not shown). When a predetermined amount of thread is wound around the bobbin B and the doffing is performed, the control tool advances the thread guide tool 16 of the thread suction device 13 to the guide position F, and then the thread guide tool 29 of the thread cutting device 12. The start of each of the yarn suction device 13 and the yarn cutting device 12 is controlled so as to advance to the yarn catching position H, and after bobbin replacement, the yarn hooking on the empty bobbin end portion Ba is completed and normal winding is started. At times, the circuit is configured to retract the yarn guide tool 16 of the yarn suction device 13 and the yarn guide tool 29 of the yarn cutting device 12 to the standby position.

The bobbin exchange and the empty bobbin end portion Ba
Since the yarn Y is continuously fed from the upstream while the yarn is hooked on the yarn, the suction to the suction port 14 is continued in order to obtain the tension required for the yarn Y, and the yarn connected to the suction port 14 after the yarn hooking is continued. Y is cut, and after a predetermined time (after a time required for discharging the yarn Y from the cutting position to the suction port 14), the yarn guide 16
To the standby position E (fall down).

The yarn cutting device 12 and the yarn suction device 1
The yarn suction / cutting device composed of 3 controls the respective activations as described above to move the yarn Y into the yarn guide surface 1 of the yarn suction device 13.
Since the yarn Y is caught and cut by the yarn guiding tool 29 of the yarn cutting device 12 after being caught by 6c and 16c and guided to the vicinity of the suction port 14, the cut yarn can be surely sucked to the suction port 14. . The yarn Y once sucked and captured is reliably maintained in the sucked state without sagging due to the air flow ejected from the nozzle hole 23 of the yarn suction device 13 to the compressed air passage 22. After the bobbin is replaced, the thread hooking device 11 hooks the thread Y sucked into the suction port 14 by the swinging thread hooking arm 10 and delivers it to the empty bobbin end portion Ba, and the thread Y is wound on the bobbin B. This completes the thread hooking. When the threading is completed, the traverse operation and the normal winding are started.

[0020]

According to the apparatus of the present invention as set forth in claim 1, since the yarn caught by the yarn guiding surface is guided to the vicinity of the suction port, it is possible to surely suck the high-tensile yarn and to guide the yarn. With ingredients
Manufactured by integrating the lid and the structure to simplify
Cost reduction and easy handling
It The device of the present invention according to claim 2 is caught by the yarn guide surface.
Since the thread is guided near the suction port, suction of high tension thread is ensured.
The manufacturing cost can be reduced by simplifying the structure so that the forward movement operation of the yarn guide tool and the suction at the suction port can be performed in a common compressed air passage equipped with an on-off valve. It is possible to make it easier to handle.
In the device of the present invention according to claim 3, since the thread guide of the thread cutting device is activated after the thread guide of the thread suction device is activated by the control tool, the thread can be sucked in a reliable manner. Can be cut.

[Brief description of drawings]

FIG. 1 shows an embodiment of a device of the present invention and is a top view of a yarn hooking device equipped with the device of the present invention.

FIG. 2 is a side view of the yarn hooking device.

FIG. 3 is a partial cross-sectional view showing a state in which a thread can be cut along line D-D in FIG.

FIG. 4 is a diagram showing a non-cuttable state along the line D-D in FIG. 2;

FIG. 5 is a top view of a conventional yarn hooking device.

[Explanation of symbols]

11 ... Yarn hooking device, 12 ... Yarn cutting device, 13 ... Yarn suction device, 14 ... Suction port, 15 ... Yarn suction path, 16 ... Yarn guide tool,
16a ... Lid part, 16c ... Guide surface, 19 ... Operation tool, 22 ...
Compressed air passage, 24 ... on-off valve, P ... traverse plane, E ... standby position, F ... guide position

Claims (3)

(57) [Claims] 1. A opens the suction port of the yarn suction path so as to face the traverse plane of the yarn, the yarn guide member that advances and retreats between the guide position intersecting the standby position and the traversing plane which does not cross the traversing plane And a thread guide device provided with a thread guide surface that is in a posture from a traversing plane to a vicinity of the suction port when the thread guide tool advances to a guide position.
It has a lid that opens and closes the mouth, and moves forward to the guide position.
When the suction port is opened at the time of retreating to the standby position
A yarn suction device characterized in that the suction port is covered with a lid portion.
Place 2. The suction of the yarn suction path so as to face the traversing plane of the yarn.
Stand-by position and traverse with opening of the pull port and not crossing the traverse plane
A thread guide that moves back and forth between the
The thread guiding tool is traversed when it is advanced to the guiding position.
Set the thread guide surface in a position from the flat surface to the vicinity of the suction port.
In the provided yarn suction device, the forward movement operation of the yarn guide tool is performed.
After the operation tool operated by the supplied compressed air and the thread guide tool
Supplied with a spring for retracting and suction at the suction port
Connected to the thread suction path that uses compressed air and the operation tool and thread suction path
And a common compressed air passage with an on-off valve
Open the valve and move the thread guide to the guide position with the operating tool.
With the suction port in the suction state, the open / close valve is closed,
A thread characterized by retracting the inner component to the standby position with a spring
Suction device. 3. A yarn suction device according to claim 1 or 2, and a yarn guiding tool for guiding the captured yarn to a cutting portion are moved back and forth between a standby position not intersecting the traverse plane and a yarn catching position. And a yarn cutting device provided as described above, wherein the yarn guiding tool of the yarn sucking device is moved to a guiding position, and then the yarn guiding device of the yarn cutting device is moved to a yarn catching position. A yarn suction / cutting device provided with a control tool for controlling each activation of the yarn suction device and the yarn cutting device so as to move it forward.