JPH0570042A - Yarn trap for winder - Google Patents

Abstract

PURPOSE:To provide the yarn trap of a winder operating a shutter at the time of a full-bobbin stop and a miss-knot stop independently from a yarn connecting action so that no yarn is sucked into an air suction port regardless of the strength of the preset tension. CONSTITUTION:In the yarn trap of a winder 1 provided with an air suction port 11a for sucking and holding a cut yarn end is provided on the yarn passage of a yarn Y wound on a winding package 3 from a feeding package 6 and provided with a shutter 15 opening or closing the air suction port 11a on it, an actuator 16 closing the shutter 15 at the time of a full-bobbin stop and a miss-knot stop of the winding package 3 is provided.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a winder yarn trap for sucking and holding a yarn end of a yarn wound from a yarn supplying package to a winding package.

[0002]

2. Description of the Related Art In a winder, yarn waste, fiber waste, dust, etc. contained in a running yarn is removed from the yarn path of a yarn wound from a yarn supplying package to a winding package and is being wound. A yarn trap for suction-holding the broken yarn end is provided. This yarn trap comprises an air suction pipe provided on the yarn path and a shutter for opening and closing the suction port of the suction pipe. This shutter is
It is normally open, and the cam mechanism linked to the knotting operation covers the suction port of the air suction tube only during the knotting operation in synchronization with the knotting operation (Japanese Patent Publication No. 57-228).
67 publication). This prevents the yarn whose tension is temporarily lost during the yarn knotting operation from being sucked into the air suction tube in a U-shape.

[0003]

However, in the conventional shutter, since the cam mechanism interlocking with the yarn knotting operation covers the suction port of the air suction tube only during the yarn knotting operation, the following problems occur. Has occurred.

Fine thread (weak thread) and dyed winding (soft winding)
When it is necessary to set the tension of the traveling yarn to be weak, it is necessary to set the yarn holding force of the tensor that holds the yarn with a predetermined force to give tension to the traveling yarn, but in this case, the winder will not fully fill. At times or when you stop misknots,
Since the shutter does not cover the suction port of the air suction tube, the thread held by the tensor slips due to the suction force and the thread of the yarn feeding package is released and sucked into the air suction tube. This thread becomes a waste thread.

Similarly, when a gate type tensor having a weak yarn holding force when the yarn is stopped is used as the tensor, the shutter does not cover the suction port of the air suction pipe when the full pipe is stopped or the misknot is stopped. The suction force of the air suction tube exceeds the holding force of the tensor, and the thread held by the gate type tensor slips due to the suction force to release the thread of the yarn feeding package and is sucked into the air suction tube.

The object of the present invention, which was devised in view of the above circumstances, is to separate the shutter from the thread knotting operation so that the shutter operates even when the full tube is stopped or when the misknot is stopped, and the thread is set regardless of the strength of the set tension. The purpose of the present invention is to provide a winder yarn trap that prevents the air from being sucked into the air suction port.

[0007]

In order to achieve the above object, the present invention provides an air suction device for sucking and holding a broken yarn end on a yarn path of a yarn wound from a yarn supplying package to a winding package. In a yarn trap of a winder having an opening and a shutter for opening and closing the air inlet, an actuator for driving the shutter to close when the winding package is stopped, when the miss knot is stopped, and when knotting is performed. It is configured with.

[0008]

According to the yarn trap having the above structure, the shutter for opening and closing the air suction port is driven to be closed by the actuators when the winding package is fully loaded, when the miss knot is stopped, and when knotting is performed, so that the suction force of the air suction port is increased. Is cut off. Therefore, even when the misknot is stopped or the pipe is fully stopped, the yarn is reliably prevented from being sucked into the air suction port regardless of the strength of the set tension.

[0009]

An embodiment of the present invention will be described below with reference to the accompanying drawings.

As shown in FIG. 1, a cradle 4 for supporting the winding package 3 and a traverse drum 5 for rotating the winding package 3 in contact with each other are provided on the upper part of the side frame 2 of the winder unit 1. There is. On the other hand, a yarn supplying package 6 is rotatably supported on the lower portion of the side frame 2, and by rotating the traverse drum 5, the yarn Y of the yarn supplying package 6 is wound.
Can be rewound.

In the figure, 7 is a yarn splicing device for connecting yarns at the time of yarn breakage, 8 is a slab catcher for detecting and cutting the slab of the yarn, and 9 is a yarn for searching the lower yarn of the yarn supplying package 6 at the time of yarn breakage. A suction arm 10 for delivering the end to the yarn splicing device 7 is a suction nozzle for delivering the upper yarn on the winding package 3 side when the yarn is broken and delivering the yarn end to the yarn splicing device 7, 12 is a holding force for the traveling yarn Y with a predetermined force. It is a tensor that gives appropriate tension. According to this configuration, the yarn Y drawn out from the yarn supplying package 6 is wound around the winding package 3 through the tenser 12, the slab catcher 8, and the traverse drum 5.

A yarn trap T according to the present embodiment is provided above the tenser 12. The yarn trap T removes cotton wool such as yarn waste fiber waste contained in the traveling yarn Y and sucks and holds a yarn end broken during winding, and the air suction pipe 11 of the air suction pipe 11. Suction port 11a
And a shutter 15 for opening and closing.

As shown in FIG. 2, the air suction tube 11 is provided below the yarn guide plate 13 on the yarn path of the yarn Y wound from the yarn supplying package 6 to the winding package 3. , Connected to an air suction blower (not shown). The thread guide plate 13 has a V-shaped guide groove 14
Are formed, and the yarn Y runs inside the guide groove 14. Suction port 11a of the air suction pipe 11
Is freely opened and closed by the shutter 15.

The shutter 15 is a cover plate 15a which is curved in an arc shape and which substantially opens and closes the suction port 11a, and a cover plate 15a.
and a bracket 15b connected to the end surface of a. The bracket 15b is rotated by energizing the rotary solenoid 16 provided in the side frame 2, and this rotation causes the lid plate 15a to move the suction port 11a of the air suction pipe 11 as shown in FIG. Open and close. Here, the rotary solenoid 16 has a spring body inside thereof, and when the energization is not performed, the cover plate 1
5a returns to the open position. An air actuator or the like may be used instead of the rotary solenoid 16.

The rotary solenoid 16 for opening and closing the shutter 15 has a side frame 2 as shown in FIG.
The operation is controlled by a control unit 17 provided inside. A full tube stop signal 18, a miss knot stop signal 19 and a knotting signal 20 of the winding package 3 are input to the control section 17, respectively. Control unit 1
7 gives a closing operation command (energization) to the rotary solenoid 16 when any of the above signals is input.

The full pipe stop signal 18 is sent to the traverse drum 5
Is detected, the winding yarn length of the winding package 3 is calculated based on the detected value, and this is issued when the calculated value exceeds a predetermined full pipe length. Misnot stop signal 19
The counter continuously sets the knotting operation number of times (three times)
Emitted when you count. This counter is provided with a suction arm 9 and a suction nozzle 10 when knotting a thread.
A well-known mechanical memory is used, which is provided in a yarn splicing drive device for rotating the. Further, the knotting signal 20 is issued when a sensor provided in the yarn joining drive device detects its operation.

The operation of this embodiment having the above configuration will be described.

As shown in FIG. 1, when the winding package 3 is fully stopped, when the control section 17 receives a full-stop signal 18, the control section 17 energizes the rotary solenoid 16. As a result, the shutter 15 rotates upward to cover the suction port 11a of the air suction pipe 11. In this way, when the full pipe is stopped, the shutter 15 causes the suction port 11a of the air suction pipe 11 to move.
Since the suction force is covered by covering the yarn, even when the set tension (thread holding force) of the tenser 12 such as thin yarn or dyeing winding is set to be weak, the yarn Y held by the tensor 12 slips due to the suction force. It is prevented that the yarn of the yarn supplying package 6 is released and sucked into the air suction pipe 11.

Similarly, when the misnot stop signal 19 is input to the control section 17 at the time of stopping the misnot,
The control unit 17 energizes the rotary solenoid 16 so that the shutter 15 covers the suction port 11a of the air suction pipe 11. Thus, even when the misnot is stopped, the shutter 1
Since 5 covers the suction port 11a of the air suction tube 11 to block its suction force, even if the set tension (thread holding force) of the tenser 12 such as thin yarn or dyeing winding is set to be weak, It is prevented that the held yarn Y slips due to the suction force and the yarn of the yarn supply package 6 is released and sucked into the air suction pipe 11.

Further, at the time of knotting, the control section 17
When the knotting signal 20 is input to, the control unit 17 energizes the rotary solenoid 16 and the shutter 15 covers the suction port 11a of the air suction pipe 11. Therefore, at the time of knotting, the yarn Y whose tension is temporarily lost is prevented from being sucked into the air suction tube 11 in a U-shape.

As described above, the shutter 15 is separated from the yarn knotting operation, and is closed and driven by energizing the solenoid 16 when the winding package 3 is in the full tube stop state, the miss knot stop state, or the knotting state, respectively. The yarn Y can be prevented from being sucked into the air suction pipe 11 during the yarn knotting operation as in the conventional case, and the yarn Y can be prevented from being sucked in the air even when the misknot is stopped or the full pipe is stopped regardless of the strength of the set tension of the tenser 12. Suction to the suction port 11a is reliably prevented. Therefore, it is possible to reduce the amount of waste yarn sucked into the air suction pipe 11.

In this embodiment, the tensor 12 has
Although the disk type tensor in which the yarn Y is sandwiched between the two rotating disks 12a and 12b is used, the present invention is not limited to this, and a gate type tensor 21 as shown in FIGS. 4 and 5 may be used. The gate type tensor 21 includes a pair of comb teeth 22 and 2
The yarn Y is sandwiched between 3 and meshed with each other, and the yarn Y gives tension to the yarn Y by alternately running around the comb portions 24 of the comb teeth 22 and 23. When the yarn Y is stopped, the gate type tensor 21 has a weaker yarn holding force than the disc type tensor 12 due to its structure. Therefore, conventionally, when the air intake port 11a is open when the pipe is full or when misnot is stopped. , The comb teeth 22 and 2 due to the suction force
The yarn Y gripped between 3 slipped and a large amount of yarn Y was sucked into the air suction port 11a. When the yarn trap T of the present invention is applied to the winder equipped with the gate type tensor 21, the air suction port 1 is provided at the time of full pipe stop and miss knot stop.
By closing 1a, the amount of waste yarn sucked into the suction port 11a can be greatly reduced.

[0023]

As described above, according to the present invention, the following excellent effects can be exhibited.

Since the shutter is separated from the yarn knotting operation and the winding packages are driven to be closed by the actuators when the winding package is fully stopped, when the miss knot is stopped, and when knotting is performed, the yarn is moved to the air suction tube during the yarn knotting operation. Not only can it be prevented from being sucked, but it can be surely prevented that the yarn will be sucked into the air suction port regardless of the strength of the set tension of the yarn even when the misknot is stopped or the full pipe is stopped, so that it is sucked into the suction port. The amount of waste thread can be significantly reduced.

[Brief description of drawings]

FIG. 1 is a front view of a winder unit including a yarn trap showing an embodiment of the present invention.

FIG. 2 is a perspective view of a yarn trap portion of the winder unit.

FIG. 3 is a side sectional view of the yarn trap.

FIG. 4 is a perspective view showing an outline of a gate type tensor.

FIG. 5 is a cross-sectional view of a gate type tensor.

[Explanation of symbols]

 1 Winder Unit 3 Winding Package 6 Yarn Supply Package 11 Air Suction Tube 11a Air Suction Port 15 Shutter 16 Solenoid as Actuator 17 Control Unit Y Thread T Yarn Trap

Claims (1)

[Claims] 1. An air suction port for suction-holding a broken yarn end is provided on a yarn path of a yarn wound from a yarn supply package to a winding package, and the air suction port includes:
A winder yarn trap provided with a shutter for opening and closing the winder package, the winder yarn trap including an actuator for closing and driving the shutter when the winding package is stopped, when the winding knot is stopped, and when knotting is stopped.