JP2872598B2 - Method and apparatus for removing yarn end from yarn package - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a yarn end (hereinafter referred to as "yarn end") temporarily fixed to the outermost periphery of a yarn package (hereinafter simply referred to as "package") wound immediately before completion of winding. "
The present invention relates to a pretreatment method for removing the outermost yarn and transfer tail treatment in the next step, and an apparatus for performing the method.

[0002]

2. Description of the Related Art In recent years, when a thermoplastic synthetic fiber such as polyester or nylon fiber is processed by a draw twisting machine, a draw false twisting machine, or the like, the free end of a yarn at the beginning of winding between packages to be processed is wound. Continuous processing is performed without temporarily interrupting the processing by connecting the free end of the last yarn. For this reason, it has been proposed to form a transfer tail at the end of the bobbin of the package outside the yarn traverse area at the beginning of winding (Japanese Patent Publication No. 57-36233 and Japanese Patent Application Laid-Open No. 58-119553).

[0003] The package wound up in this way is:
To facilitate transfer tail processing, peel off the lap winding (also called bunch winding or pigtail) formed at the end of the bobbin while leaving the transfer tail of a certain length. , A tape, a label, a seal, or the like, which is fixed to the end of the bobbin (Japanese Patent Application Laid-Open Nos. 1-2226668 and 1-3).
No. 21264).

Further, a bunch winding thread formed on the outermost peripheral surface of the package is peeled off. The bunch winding yarn is generated by temporarily stopping the yarn traverse of the winding machine when switching between the full bobbin and the empty bobbin wound by the automatic switching type winding machine, Since the wound yarn at this time is inferior in yarn quality, it needs to be peeled off (Japanese Patent Application Laid-Open No. 60-140473).

Further, prior to the above-mentioned various processes, if the yarn end hanging down from the package doffed from the winding machine hangs down for a long time, the hanging yarn end wraps around the machine,
In order to cause a problem that a series of automation processes cannot be continued, the doffed package is usually temporarily fixed at the yarn end to the outermost peripheral surface of the package (Japanese Patent Laid-Open No. 6-191733). .

However, the transfer tail processing and the stripping processing described above cannot be performed smoothly while the yarn end of the package is temporarily fixed to the outermost peripheral surface. For this reason, it is necessary to take out the yarn end temporarily fixed to the outermost peripheral surface of the package and perform a pretreatment for hanging the yarn end to a predetermined position. For this reason, the present inventor has proposed in Japanese Patent Laid-Open Publication No. Hei 5-246624 a method and an apparatus for taking out a yarn end temporarily fixed on the outer peripheral surface of a package, shaping the yarn end into an appropriate length, and hanging the yarn end from the package. did.

However, in such a pretreatment, the timing of cutting the temporarily fixed yarn is slightly shifted,
In addition, due to the influence of the air-conditioning wind, the yarn end does not hang down to a normal position (a position forming a tangential direction with respect to the outer peripheral surface of the package), and does not drop to the end surface of the package. This causes the problem of sticking. When such a problem occurs, the transfer tail processing and the stripping processing described above cannot be performed normally, and the continuation of the automation processing is hindered. For this reason, it is possible to take out the yarn end temporarily fixed to the outer peripheral surface of the package, shape it to an appropriate length, and then hang it from the package.
A method and a device that can be implemented stably and reliably have become necessary.

[0008]

SUMMARY OF THE INVENTION The present invention has been made in view of the above-described problems, and it is possible to stably and reliably take out a yarn end temporarily fixed on the outer peripheral surface of a package, and It is an object of the present invention to provide a method and an apparatus capable of smoothly performing transfer tail processing and stripping processing.

[0009]

Means for Solving the Problems Here, the yarn packing of the present invention is described.
As a method of removing the yarn end of the
Is temporarily fixed to the final wound yarn (y) formed on the outer peripheral surface of
A new thread end from the yarn package
-F to take out.
A method for removing the yarn end of the yarn package. A. The final wound yarn (y) is sucked to remove the yarn package.
Floating from the outer peripheral surface, the yarn package
The final wound yarn (yb) on the side not connected to the
The final wound yarn (ya) on the side connected to the cage is formed.
Then, B. The last wound yarn on the side not connected to the yarn package (y
b) is cut, and the last wound yarn (ya) is suction-held.
And, C. Next, the yarn package is rotated in the yarn releasing direction.
And the last wound yarn on the side not connected to the yarn package
(Yb) was removed by suction, D. After that, it is connected to the yarn package from the suction unit.
E. cutting the yarn and unwinding the suction; Compressed in the direction in which the cut yarn ends are unwound from the package
Spray the gas and cut the cut yarn end to the outer periphery of the yarn package.
Away from the surface, and F.I. By rotating the yarn package in the yarn winding direction,
Hang the cutting thread end. Is provided.

[0010] Further, as means for embodying the above-described method for removing the yarn end of the yarn package, there is provided a yarn package.
Yarn temporarily fixed to the last wound yarn formed on the outer peripheral surface of the
Release the end of the thread and take out a new thread end.
A yarn end take-out device for a yarn package including elements. G. FIG. Suction the last wound yarn and check if it is the outer peripheral surface of the yarn package.
A suction nozzle to highlight al, H. On the side connected to the yarn package with the suction nozzle interposed
The last wound yarn (ya) and the side not connected to the yarn package
And the final wound yarn (yb)
A pair of yarn cutter provided in order, I. Set the yarn package in the yarn unwinding direction and the yarn winding direction
Each rotatable yarn package - and di rotary drive motor, J. The final wound yarn (ya) on the side connected to the yarn package
Unwound from the outer peripheral surface of the yarn package
Unwound from the yarn package to separate in the direction
Compressed gas that blows compressed gas in the direction to the cut yarn end
Spray nozzle. Is provided.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below in detail with reference to the drawings.

FIG. 1 is an overall view (front view) of an apparatus illustrating an embodiment of the present invention. 2 and 3 show an enlarged perspective view of a portion A and an enlarged front view of a portion B in FIG. 1, respectively. Hereinafter, an example in which the yarn ends are entangled and fixed will be described, but the present invention is not limited to this.

In FIG. 1, reference numeral 1 denotes a transfer tray in which a bobbin holder (2) for holding a package (P) is projected in a horizontal direction. The bobbin holder (2) is formed by a known method, for example, a spring method. The package (P) is fixed, and is rotatably supported by the tray body (1a). The rear end of the bobbin holder (2) has a drive connecting portion (2) formed of a tapered sleeve receiver of a bearing unit.
a) is formed.

Reference numeral 3 denotes a conveyor for loading the tray (1) and transporting the tray (1) to a predetermined position. Machines (4) and (5) disposed on both sides of the conveyor (3). )
Above, respectively, the yarn end release machine (6) and the rotary drive machine (21)
Are provided to face each other. The rotary drive (2
1) The bobbin holder (2) provided on the tray (1) is rotated in order to rotate the package (P) by a predetermined angle.

The yarn end releasing machine (6) is provided with a machine base bracket (4).
The actuator (7) attached to the front upright surface of (a), the abutment (8) fixed to the actuator (7), and the suction port (9a) attached to the abutment (8) downward. Suction nozzle (9), machine bracket (4
a) The actuators (10) and (11) respectively mounted on the upright surfaces on both side surfaces of the actuator (1).
Brackets (12) and (13) attached to the tips of (0) and (11), respectively, and scissors type provided to face the brackets (12) and (13) with the suction nozzle (9) interposed therebetween. Cutting devices (14) and (15),
And so on. The cutters (14) and (15) are respectively connected to the actuators (16) and (1).
By 7), reciprocating movement is possible in the direction of the suction nozzle (9).

The abutment (8) has an actuator (1) attached downward at a front position thereof.
8), two optical yarn end detectors (19) (only one side is shown in the figure and the other side is not shown) are vertically movably arranged. Then, the yarn end detector (1
The two sensors (19a) provided in 9) have their detection directions directed to the front upright surface of the bracket (4a), respectively, and are provided between the cutters (14) and (15) and the suction nozzle (9). It is provided to be located. Reference numeral 20 denotes a suction hose.

Further, a nozzle (30) for blowing compressed gas in a direction substantially perpendicular to the central axis of the package (P) is provided on the bracket (4a) via a bracket (31) to a suction nozzle (9). It is provided in the vicinity.

The rotary drive (21) of the package (P) provided on one side on both sides of the conveyor (3) includes:
The shaft center position is fixed to the gantry (5a) so as to correspond to the package (P). And the rotary drive (2
1) is connected to a drive motor (22) (an air motor is usually used, but another type of motor such as an electric motor may be used), a drive shaft (23), and a distal end of the drive shaft (23). And a tapered sleeve (24) directly connected to the drive interlocking section (2a).
5) The pusher (26) is pushed out to the drive interlocking section (2a) through the pusher (26).

In the apparatus configured as described above, the tray (1) on which the package (P) having the yarn end temporarily fixed to the outer peripheral surface of the package (P) by the entanglement process is loaded,
When the conveyor (3) conveys to the front position of the yarn end take-out device from the previous process, the stopper provided at the predetermined position operates and stops at the predetermined position.

In the state described above, the yarn end extracting method of the present invention is executed. This will be described below in detail with reference to FIG.

In the figure, a yarn end (ya) temporarily fixed by entanglement with the last wound yarn (y) is formed on the outer peripheral surface of the package (P), and the yarn end is gravity. (FIG. 4)
-(a)).

In the state in which the yarn end take-out processing is possible, the actuator (25) operates to slide the taper sleeve (24) in the direction of the arrow in FIG. 1, and the tray (1) (bobbin holder (2)) And the package (P) is rotatable by the drive motor (23).

Next, the actuator (7) operates,
As a result, the suction nozzle (9) descends to the position immediately adjacent to the package (P), approaches the position just corresponding to the winding position of the last wound yarn (y), and sucks the entangled yarn end (ya). Simultaneously with the suction, the package (P) is rotated in the direction of the arrow shown in FIG. However,
This direction of rotation is not particularly important at this point, and may be in the opposite direction. By the rotation of the package (P), the entangled yarn end (ya) is sucked up by the suction nozzle (9) (see FIG. 4- (b)).

At this time, when the entanglement yarn end (ya) is temporarily fixed at a fixed position on the outer peripheral surface of the package (P),
What is necessary is just to rotate slightly more than this position based on the temporarily fixed position. However, in the previous step, if the temporary fixing has failed and the entangled yarn end (ya) is not temporarily fixed to the outer peripheral surface of the package (P), the package is rotated at least once. Before starting the suction, the package (P) is rotated in advance, the position of the confounding yarn end (ya) is brought close to the suction nozzle (9), and the package (P) is sucked by the nozzle (9). P) may be rotated at a fixed angle in the yarn winding direction or the yarn releasing direction to make suction more reliable.

When the package (P) rotates a predetermined time, the yarn end detection sensor (19) is lowered by the actuator (18) to a position near the suction port (9a) serving as a yarn end suction path, and the entangled yarn end (ya). It is determined whether or not is sucked. In this case, if the yarn suction has not been performed, the operation returns to the initial operation and the above-described operation is repeated.
An alarm may be issued, or an alarm may be issued to stop the continuation of the operation.

When the suction of the yarn to the suction nozzle (9) is confirmed in this way, the actuator (7) is operated, and the suction nozzle (9) is raised to thereby make the final wound yarn (y). Emerge from the package (P). Thereafter, the actuator (10) is operated, and the cutter (14)
Is projected to the position where the yarn (yb) on one side connected to the package is located (FIG. 3 shows just this state). Next, the scissor portion (14a) is moved in the direction of the suction nozzle (9) by the operation of the actuator (16), and the thread (yb) is cut (FIG. 4- (C)).

Then, the bobbin holder (2) on which the package (P) is mounted is rotated in the yarn unwinding direction by the drive motor (22), and the cut yarn is sucked and peeled off (FIG. 4-). (d)).

When the rotation of the fixed amount of the package (P) for sucking the cut yarn is completed in this manner, the package (P) is provided opposite to the cutter (14) with the suction nozzle (9) interposed therebetween. The other cutting device (15) cuts the other yarn connected to the package (P) being suctioned by the suction nozzle (9) (FIG. 4- (e)). Since the operations of the actuators (11) and (17) at this time are the same as those of the above-described cutter (14), detailed description will be omitted.

At the time of this cutting, the free end of the yarn connected to the package (P) sometimes becomes the package (P).
Of the package (P) or may stick to the outer peripheral surface of the package (P). If such a situation arises, it will be difficult to remove the bunch-wound thread on the outer peripheral surface of the package (P) in the next step, as described in the section of the prior art. It is.

Therefore, in order not to cause the above-mentioned situation, at the same time as or immediately after the cutting of the yarn by the cutter (15), the cut yarn is unwound from the package.
A compressed gas is blown from a compressed air blowing nozzle (30). This allows the free end of the cut yarn to flow in the unwinding direction of the yarn, and
The free end can be separated from the outer peripheral surface of the yarn package.
It (Figure 4- (f)).

At this time, the pressure of the compressed gas to be blown depends on the amount of the gas to be blown, but is 0.5 to 1.0 kg / c.
It is preferable to set the pressure to about m ² and to shorten the time interval for spraying. Also, a compressed gas blowing nozzle (30)
The shape of the blowing part is round, oval, slit, etc.
Various shapes can be employed.

As described above, it is very important in the present invention that the free ends of the cut yarns be separated from each other while the free ends of the cut yarns are moved in the yarn unwinding direction.
The package (P) is rotated by a fixed amount in the yarn winding direction (FIG. 4- (g)).

Then, the free end of the thread finally cut from the package (P) is set to a predetermined length and hangs at a predetermined position (FIG. 4- (h)).

Thereafter, the drive interlocking section (2a) is released,
When the engagement between the drive motor (22) and the tray (1) is released, the positioning stopper is released, and the tray (1) loaded with the package (P) is transported to the next step by the conveyor (3). . Then, an unprocessed package is transported instead, and the above-described series of operations is repeated again.

In the above, an example in which the yarn end is entangled with the final wound yarn and temporarily fixed has been described. However, even when the wound end is in a relaxed state even with a tightly tied knot. It goes without saying that the same method and apparatus as those of the present invention can be applied to the present invention. In addition, as the actuator, a fluid pressure cylinder operated by a compressed fluid, an electric reciprocating mechanism, or the like is preferably used. In addition, as a cutting device, a cutting device of an electric heating type, a hot air type or the like can be used in addition to a cutting device of a mechanical type such as scissors or a knife blade. Further, the rotary driving device of the package is not limited to the embodiment of the present invention, and any other connecting method or driving method can be adopted.

[0036]

As described above, according to the present invention,
The yarn end temporarily fixed to the outer peripheral surface of the package can be taken out stably and reliably, and the subsequent transfer tail processing and stripping processing can be smoothly performed, thereby enabling the subsequent processing without interruption of the automation processing. This is an extremely remarkable effect that the processing of the package can be continued.

[Brief description of the drawings]

FIG. 1 is an overall view of an apparatus showing one embodiment of the present invention.

FIG. 2 is an enlarged perspective view of a portion A in FIG.

FIG. 3 is an enlarged front view of a portion B in FIG. 1;

FIGS. 4 (a) to 4 (h) are operation explanatory diagrams for explaining the method of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Tray 2 Bobbin holder 6 Thread end release machine 9 Suction nozzle 14 Thread cutter 15 Thread cutter 19 Thread end detector 21 Package rotation drive 22 Drive motor 30 Compressed gas blowing nozzle P Package

────────────────────────────────────────────────── ─── Continuation of the front page (56) References JP-A-5-246624 (JP, A) JP-A-6-115816 (JP, A) (58) Fields investigated (Int. Cl. ⁶ , DB name) B65H 57/00-57/28 B65H 65/00

Claims (2)

(57) [Claims] A first package formed on an outer peripheral surface of the yarn package;
The yarn end temporarily fixed to the last wound yarn (y) is
By performing the operation procedure of F, a new yarn package
The yarn end of the yarn package, which is taken out from the thread
How to take out. A. The final wound yarn (y) is sucked to remove the yarn package.
Floating from the outer peripheral surface, the yarn package
The final wound yarn (yb) on the side not connected to the
The final wound yarn (ya) on the side connected to the cage is formed.
Then, B. The last wound yarn on the side not connected to the yarn package (y
b) is cut, and the last wound yarn (ya) is suction-held.
And, C. Next, the yarn package is rotated in the yarn releasing direction.
And the last wound yarn on the side not connected to the yarn package
(Yb) was removed by suction, D. After that, it is connected to the yarn package from the suction unit.
E. cutting the yarn and unwinding the suction; Compressed in the direction in which the cut yarn ends are unwound from the package
Spray the gas and cut the cut yarn end to the outer periphery of the yarn package.
Separated from the surface, and F. Cutting by rotating the yarn package in the yarn winding direction
Hang the yarn end. 2. A yarn package formed on an outer peripheral surface of a yarn package.
Release the yarn end temporarily fixed to the last wound yarn and newly
A yarn package including the following G to J elements for extracting an end:
Yarn end take-out device. G. FIG. Suction the last wound yarn and check if it is the outer peripheral surface of the yarn package.
A suction nozzle to highlight al, H. On the side connected to the yarn package with the suction nozzle interposed
The last wound yarn (ya) and the side not connected to the yarn package
And the final wound yarn (yb)
A pair of yarn cutter provided in order, I. Set the yarn package in the yarn unwinding direction and the yarn winding direction
Each rotatable yarn package - and di rotary drive motor, J. The final wound yarn (ya) on the side connected to the yarn package
Unwound from the outer peripheral surface of the yarn package
To space the direction, is unwound from the yarn package
Compressed gas that blows compressed gas in the direction to the cut yarn end
Spray nozzle.