JPH08319062A - Yarn fastening method and yarn end processing device - Google Patents

Abstract

PURPOSE: To fasten a yarn end using a simple mechanism without fear of giving a damage to a yarn layer. CONSTITUTION: A yarn end YE and its yarn YB before one turn of a package 1 are caught, and these yarn filaments Y caught are twisted to be fastened to a surface layer 3 of the package 1 with the yarn end YE to be wound around the yarn TB before one turn. The yarn end YE is caught in such a state that it is extended sufficiently longer than the yarn before one turn YB caught. The yarn end processing device is equipped with a yarn end capturing mechanism 11 which pulls out the yarn end YE of the package 1 to a predetermined length, a yarn holding mechanism which draws out the thread YB before one turn of the yarn end YE in a loop-shape, and a twisting mechanism which absorbs a lapped part of the yarn pulled out by the yarn holding mechanism and the yarn end capturing mechanism to twist the lapped part.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a yarn stopping method and a yarn end treating device for treating a yarn end of a package.

[0002]

2. Description of the Related Art Generally, a package wound by a winding machine or the like is transported to the next step or shipped as a product. In this type of package, in order to prevent the yarn on the surface layer from unraveling during transport and entanglement with other machines such as conveyors, the yarn end processing device is used to tie the yarn ends, or the surface layer is coated with adhesive or adhesive tape. The method of fixing on was proposed.

[0003]

However, the method of connecting the yarn ends by the yarn end processing device has problems that the operation and mechanism are complicated and the processing efficiency is poor. Also, the method of fixing with an adhesive tape or the like means that an extra adhesive substance is applied to the yarn end, which may adversely affect the yarn layer.

Therefore, the present invention was devised to provide a yarn stopping method and a yarn end treating device which are capable of stopping the yarn end with a simple mechanism without the risk of damaging the yarn layer.

[0005]

SUMMARY OF THE INVENTION According to the present invention, a yarn end of a package and a yarn one round before the package are captured, the captured yarn is twisted, and the yarn end is wrapped around the yarn one round before. It is fixed on the surface. It is preferable that the yarn end is caught in a state in which the yarn end is extended sufficiently longer than the caught yarn one round before. Further, according to the present invention, the yarn end catching mechanism for pulling out the yarn end of the package to a predetermined length, the yarn holding mechanism for pulling out the yarn one round before the yarn end in a loop, and the yarn holding mechanism and the yarn end catching mechanism. It is provided with a twisting mechanism for sucking the overlapped portion of the twisted yarn and applying a twist.

[0006]

With the above structure, the yarn end catching mechanism pulls out the yarn end of the package to a predetermined length by suction air or the like. The yarn holding mechanism sequentially pulls the yarn one round before the yarn end from the yarn layer to form a loop. The twisting mechanism sucks the overlapped portion of the yarn drawn out by the yarn holding mechanism and the yarn end catching mechanism, twists it with swirling air, etc., winds the yarn end around the yarn one round before, and wraps it on the surface layer of the package. Stop it.

[0007]

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

As shown in FIG. 1, in the yarn stopping method of the present invention, the yarn end Y _E of the package 1 is sucked and held by the suction air A, and the yarn guide 2 is engaged with the yarn end Y _E. Then, the yarn Y _B, which is one round before the yarn end Y _E , is pulled out from the surface layer 3 by making one round along the surface layer 3 of the package 1. Then, the turning air B is applied to the yarn end Y _E and the yarn Y _{B one} round before to twist the yarn, and the yarn end Y _E is wound around the yarn Y _{B one} round before. By this twisting and winding, the yarns Y are tightly bound together. That is, as shown in FIG. 2, the solidified portion 4 is formed on the surface layer 3 of the package 1, and the yarn end Y
_E is something that can be stopped.

A preferred example of the yarn end treating apparatus of the present invention for carrying out this method will be described with reference to FIG. This yarn end processing device includes a yarn end catching mechanism 11 for pulling out the yarn end Y _E of the package 1 to a predetermined length, and a yarn Y before one round of the yarn end Y _E.
It is mainly configured by a yarn holding mechanism 12 that appropriately draws _B , and a twisting mechanism 13 that twists the yarn Y drawn by the yarn holding mechanism 12 and the yarn end catching mechanism 11. The package 1 is formed into a predetermined shape by a winder (not shown), and is held by a tray 14 with pegs in a state where the axis O of the tray 14 is inclined almost horizontally and is constituted by a rod conveyor or the like. It is adapted to be transferred to a processing station 16 by a path 15. In the processing station 16, a machine frame 17 that crosses above the transport path 15 and extends in parallel with the inclination direction of the axis O of the package 1 is installed in a cantilevered manner on a base 17a. The machine frame 17 is provided with the mechanisms 11, 12, and 13 described above. In the present embodiment, the unwinding nozzle 18 which is the yarn end catching mechanism 11 is attached to the lower end of the swingable arm 19, and the twisting nozzle 20 which is the twisting mechanism 13 is attached to it. An upper end of the arm 19 is supported by a support shaft 21 provided in parallel with the package axis O, and a stepping motor 22 connected to the support shaft 21 is rotationally driven so that the arm 19 is lowered substantially vertically and the lower end is packaged. It is adapted to swing between a tilted state that is sufficiently distant from the position 1 in the radial direction. And the spindle 21 and the stepping motor 2
2 is a screw rod 23 provided at the bottom of the machine frame 17,
It is supported via the bracket 24 and the nut body 25. That is, the rotation of the screw rod 23 causes the arm 19 to rotate.
Slides between a standby position separated from the transport path 15 and a position on the transport path 15 near the package 1.

As shown in FIGS. 4 to 6, the unwinding nozzle 1
The reference numeral 8 is provided inside the support plate 26 that is bent into a substantially rectangular parallelepiped shape, and is attached by a bolt 28 in a state where a substantially columnar nozzle body 27 is erected. An air passage 29 is formed at the axial center of the nozzle body 27. A plug 31 having a shaft hole 30 is attached to a side portion of the nozzle body 27, and the shaft hole 30 is exposed to the air passage 29 to define a suction port 32 directed in the radial direction. The outer end surface 33 of the plug 31 is fitted and exposed in the opening formed in the support plate 26. Also plug 31
An opening / closing means 34 for opening / closing the shaft hole 30 of the plug 31 is provided on the side of the nozzle body 27 on the opposite side. The opening / closing means 34 is composed of a block-shaped valve body 36 that comes into contact with the inner end surface 35 of the plug 31, an air cylinder 37 for moving the valve body 36 forward and backward, and a guide block 38 that holds the valve body 37. There is. Nozzle body 27
A guide hole 40 that is coaxial with the holding hole 39 of the guide block 38 is formed in the hole so as to guide the valve element 36 in the radial direction. The air cylinder 37 is attached to the support plate 26 via a bracket 41, and its piston rod 42 is attached to one side of the valve body 36. That is, the expansion of the air cylinder 37 causes the valve body 36 to move toward the inner end surface 35 of the plug 31.
The suction port 32 is closed by making contact with the suction port 32, and the valve body 36 is separated from the plug 31 by contraction so that the suction port 32 communicates with the air passage 29. An air hose 44 for supplying suction air A is connected to the opening 43 at the upper end of the nozzle body 27.

The twisting nozzle 20 comprises a nozzle body 46 having an axial hole 45 and a nozzle tube body 48 fitted in the axial hole 45 and having an air passage 47.
It is provided inside the support plate 26 in parallel with. The nozzle body 46 is attached to the support plate 26 with bolts 49, the lower end of which is in contact with the upper end of the plug 31, and the side face is sandwiched between the support plate 26 and the nozzle body 27, and provided integrally with these. Has been. At a side portion near the lower end of the nozzle body 46, at a predetermined distance above the suction port 32,
Further, the nozzle port 50 is formed so that the suction directions thereof are parallel to each other. An annular pressure air introduction chamber 51 is defined between the lower outer peripheral wall of the nozzle tube 48 and the inner wall of the shaft hole 45 of the nozzle body 46. A compressed air passage 52 formed in the nozzle body 46 communicates with the compressed air introducing chamber 51, and compressed air C is supplied by a connecting pipe 53 attached to a side portion of the nozzle body 46. . The compressed air introduction chamber 51 and the air passage 47 are communicated with each other through a tangential small hole (not shown), and a swirl flow B is formed in the air passage 47 by supplying the compressed air C. An air hose 54 for supplying suction air A is connected to the upper end of the nozzle tube body 48.

Next, as shown in FIG. 7, the thread holding mechanism 12 includes a guide rod 55 that engages with the thread Y and a cylinder for moving the guide rod 55 in a direction parallel to the axis O of the package 1. 56, a rotary plate 57 that supports the cylinder 56 and the guide rod 55, and a motor 58 that rotates the rotary plate 57 around an axis that is eccentric to the package axis O.
It is composed of That is, by expanding and contracting the cylinder 56, the guide rod 55 is moved between a close position near the surface layer 3 of the package 1 and a retracted position away from the vicinity of the surface layer 3, and the motor 5
Guide rod 5 engaged with thread Y by rotation of 8
The yarn Y is rotated and the yarn Y is drawn out in a loop as the yarn Y _{B one} round before. The rotary plate 57 is
It is attached to the output shaft of the motor 58 via a substrate 59 provided in parallel with this. The substrate 59 is provided with a chuck body 61 fitted into the paper tube 60 of the package 1,
By being rotated by the rotation motor 62, the held package 1 is rotated around its axis. The substrate 59 is superposed on and supported by the lower end surface of the support plate 63 extending downward from the machine frame 17.
The upper end of the support plate 63 is supported by a screw rod 64 provided on the machine frame 17. The screw rod 64 is provided in the upper portion of the machine frame 17 along the longitudinal direction thereof, and has the motor 6 at one end.
5 are connected. That is, by reciprocating the substrate 59 by the rotation of the motor 65, the chuck body 61 and the guide rod 55 are moved between the standby position separated from the transport path 1 and the chuck position where the chuck body 61 is fitted to the paper tube 60. It is designed to be moved.

Next, the operation of the above construction will be described as an embodiment of the thread fastening method of the present invention.

As shown in FIG. 3, the unwinding nozzle is moved by advancing the arm 19 along the threaded rod 23 to the side of the conveying path 15 and swinging the arm 19 so that the stepping motor 22 substantially hangs it down. 18 and the twisting nozzle 20 are brought close to the surface layer 3 of the package 1. At this time, the twisting nozzle 20 is at substantially the same height as the package axis O, and the unwinding nozzle 20 is below that, for example, the axis O.
15 to 20 mm below the yarn end YE and hold it so that the yarn end Y _E can be sucked (a). The package 1 shown in the figure is
Although the yarn end Y _E is hung from the surface layer 3,
When the yarn end Y _E is wound around the surface layer 3,
First, the unwinding nozzle 18 is unwound to unwind the yarn end Y _E. That is, after the paper core 60 is gripped by advancing the chuck body 61, the package motor 1 is rotated by the rotation motor 62 while the winding yarn is sucked by the unwinding nozzle 18, and the yarn end Y _E is sucked. Hold. afterwards,
When the arm 19 is moved from the surface layer 3 side of the package 1 to the end face side, and the arm 19 is rotated so that the suction port 32 of the unwinding nozzle 18 is located at the center of the package 1, the thread of the rod winding and the surface layer portion is It is unwound in the axial direction from the end of the package 1 and unwound while forming a balloon with the suction port 32. It should be noted that this unrolling may be performed at another processing station on the upstream side of the conveyance.

Then, suction air A is applied to the unwinding nozzle 18.
The yarn end Y _E is sucked by supplying the air to the air passage 29 and drawn into the air passage 29 from the suction port 32 by a predetermined length. After unwinding the surface layer, a yarn cutter (not shown) in the line is used to cut the yarn, and the package 1 held by the chuck body 61 is rotated to set the yarn end Y _E to a predetermined length. it can. The length is controlled by, for example, measuring an air supply time or a thread sensor (not shown), shutting off the suction air A by closing the opening / closing means 34, or air A.
Stop the supply itself and stop further suction. Further, in this suction stopped state, the valve body 36
Grips the yarn end Y _E at an abutting position with the plug 31 with an appropriate tension. Then, after swinging the arm 19 to separate the unwinding nozzle 18 from the surface layer 3 of the package 1, a guide rod 55 is provided between the unwinding nozzle 18 and the surface layer 3.
Is advanced, and is rotated along the eccentric track 66 by driving the motor 58 (b). When the guide rod 55 makes one round and reaches a position before the unwinding nozzle 18, the arm 19
Rocking and returning to near the surface layer 3 (c). With this, the loop portion of the yarn Y _B that has been pulled out one round before and the unwinding nozzle 1
The yarn end Y _E held by 8 overlaps, and the nozzle port 50 of the twisting nozzle 20 faces this portion. Then, the guide rod 55 is retracted to be separated from the yarn Y _{B one} round before, and the suction air A and the compressed air C are supplied to the twisting nozzle 18. With this, the twisting nozzle 18 sucks the yarn end Y _E and the yarn Y _{B one} round before, and causes the swirling air B to act on the sucked yarn Y to twist the yarn Y _{B one} round before. Wind the end Y _E (d). This twist is instantly delivered from the nozzle port 50 to the package 1.
It spreads to the side and is stopped when it reaches the surface layer 3. That is, as shown in FIG. 2, the solidified portion 4 is formed, and the yarn end Y
_E is stopped. To make the yarn end Y _E and the loop portion of the yarn Y _{B one} round before overlap, the guide rod 55 is swung past the position of the unwinding nozzle 18 as shown in FIG. 3 (e). The yarn end Y _{E so} that the loop portion and the yarn end Y _E are crossed, and aiming at this portion, the twisting nozzle 2
You may make it oppose 0. Further, in order to release the engagement between the guide rod 55 and the yarn Y _{B one} round before, the guide rod 55 is not retracted but the guide rod 55
On the other hand, for example, a cylindrical member may be covered, and the yarn Y _{B one} round before may be removed from the guide rod 55 by pushing this cylindrical member.

In this way, the yarn end Y _E and the yarn Y _{B one} round before are caught by the guide rod 55 and the unwinding nozzle 18, and the yarn paths are held so as to properly overlap with each other. Since the overlapping portion is twisted by the above, the yarn end Y _E can be firmly and surely fixed to the surface layer 3 of the package 1. The swirling air B acts only on the yarn end Y _E and the yarn Y _{B one} round before that, and does not reach the yarn layer of the main winding, and there is no risk of damaging the package quality. As shown by the chain double-dashed line in FIG. 2, when the package 1 to which the yarn end Y _E is fastened is used, the fastening portion 4 is pulled out in the axial direction so that the yarn end Y _E for one round is It can be easily pulled out in a ring shape. If the yarn end Y _E is pulled out shortly, even if twisted, it is twisted and the solidified portion 4 is not formed. However, in this embodiment, the yarn end Y _E is extended to a predetermined length. , The thread end Y _E wraps around the thread Y _{B one} round before,
The solidified portion 4 is reliably formed. The withdrawal length of the yarn end Y _E may be set sufficiently longer than the loop portion of the yarn Y _{B one} round before, for example, several times to several tens of times longer than that. Further, the present invention has a simple structure, and can be easily incorporated into the existing yarn end treatment system, which is versatile and can prevent an excessive increase in cost.

The process of twisting the yarn Y by the twisting nozzle 20 can be considered in addition to FIG. Figure 8
This embodiment shows another embodiment of this step. As in the previous embodiment, the unwinding nozzle 18 holds the yarn end Y _E at a predetermined length, and the guide rod 55 serves to cover the yarn Y _{B one} round before. If the guide rod 55 is pulled out from (3), the guide rod 55 is retracted and the suction by the unwinding nozzle 18 is stopped. With this, the loop portion of the yarn Y _{B and} the yarn end Y _E of one round before, the surface layer 3
It is in the state of being hung downward from (b). In this state,
The twisting nozzle 20 is brought close to the overlapping portion and twisted. In this way, there is no risk of the guide rod 55 getting caught in the twist.

Further, in the above embodiment, the unwinding nozzle 18 and the twisting nozzle 20 are vertically aligned and integrally provided on the arm 19. However, they are provided as separate bodies and moved respectively. You may.

[0019]

In summary, according to the present invention, the yarn layer can be prevented from being damaged and the yarn end can be stopped on the surface layer of the package with a simple mechanism.

[Brief description of drawings]

FIG. 1 is a perspective view showing an embodiment of a thread fastening method of the present invention.

FIG. 2 is a perspective view for explaining the operation of FIG.

FIG. 3 is a front view for explaining a step of the thread fastening method of FIG.

FIG. 4 is a side sectional view showing a main part of an embodiment of the yarn end treating device of the present invention.

5 is a partially cutaway front view of FIG.

FIG. 6 is a plan view of FIG. 4;

7 is a side view showing the entire yarn end processing device of FIG. 4. FIG.

FIG. 8 is a front view showing another embodiment of the thread fastening method of the present invention.

[Explanation of symbols]

1 Package 2 Thread Guide 3 Surface Layer 11 Thread End Trapping Mechanism 12 Thread Holding Mechanism 13 Twisting Mechanism 18 Unwinding Nozzle (Yarn End Trapping Mechanism) 20 Twisting Nozzle (Twisting Mechanism) 55 Guide Rod (Yarn Holding Mechanism) Y _E Thread End Y _B Thread before one round of thread A Suction air B Swirling air C Pressure

Claims (3)

[Claims] 1. A yarn end of a package and a yarn before one round thereof are captured, the yarn thus captured is twisted, and the yarn end is wound around the yarn before one round and fixed on the surface layer of the package. A thread fastening method characterized in that 2. The yarn stopping method according to claim 1, wherein the yarn end is caught in a state in which the yarn is extended sufficiently longer than the caught yarn of one round before. 3. A yarn end catching mechanism for pulling out a yarn end of a package to a predetermined length, a yarn holding mechanism for pulling out a yarn one round before the yarn end in a loop, the yarn holding mechanism and the yarn end catching mechanism. And a twisting mechanism for sucking and overlapping the overlapped portion of the yarn drawn out by the yarn end processing device.