JPS609925A - Ending in device for bind spinning - Google Patents

Abstract

PURPOSE:To send securely a yarn end of end breakage from an outlet part of a nozzle to a yarn passage, by making each pair of two spinning units, setting betwen both sides of the right and left of each pair, transferring an air twisting nozzle to the space, connecting the yarn end to suction pipe. CONSTITUTION:A drafting machanism consisting of neighboring two spindles is made as a pair, and the spaces H are set between these pairs. When end breakage ocurrs in the air twisting nozzle 4 and ending is carried out, the nozzle is transferred from the normal spinning position A to the threading position B, and it is off the front rollers 3 and 3'. The piecing rollers 22 are transferred with keeping the yarn end, and integrated with the air twisting nozzle 4, the nozzle, and shows a suction action on the inlet. Simultaneously, the piecing rollers 22 are reversed, and the yarn end is sent from the outlet 4b of the nozzle to the threading passage.

Description

[Detailed description of the invention] Technical field The present invention relates to a yarn splicing method for a binding spinning device.

More specifically, using an air false twisting nozzle, while maintaining the continuity of the fiber bundle, false twisting is applied to it by swirling air flow.
Fibers with free ends on the surface are wound around a core fiber bundle to form a binding yarn.In binding spinning, which is wound as a package, the package side yarn end and the tip of the fiber bundle, i.e., the 7 leases, are intertwined when the yarn breaks. This invention relates to a new method for joining yarns.

In the prior art binding spinning device, an air false twisting nozzle is provided on the downstream side of and close to the front roller located at the forefront of a draft mechanism consisting of a plurality of pairs of draft rollers. Twisted redden-like fiber bundles (fleece) are introduced into a nozzle, where they are heated by swirling flow and formed into yarn, which has attracted attention in recent years because it can achieve high spinning speeds of 100 or more. However, due to the yarn structure, the yarn ends are firmly restrained by the surface fibers, and the high spinning speed makes it difficult to splice the yarn by simply overlapping the yarn ends and fleece, as with conventional ring spinning machines. It is almost impossible to do so, and it is necessary to feed the yarn end back into the -H air false twisting nozzle, and then trace the yarn end back into the draft mechanism so that it overlaps sufficiently with the 7 lease end within the draft area. is necessary.

Conventionally, regarding the insertion of the yarn ends into the air false-twisting nozzle, for example, Japanese Patent Laid-Open No. 53-35033 discloses that an oblique injection hole is provided in the inner circumferential wall of the air false-twisting nozzle to generate an air flow that sends the yarn ends back. A method is disclosed in which air is injected from the injection hole with the yarn end exposed to the nozzle outlet, the yarn end is sucked into the nozzle, guided to the entrance side, and then gripped by a front roller. has been done. However, as a practical matter, the suction force generated by the small-diameter reverse injection hole drilled in the inner wall of the small-diameter nozzle is extremely small, and even a small amount of thread fuzz, etc. caught, becomes a large resistance, making it difficult for the thread to pass through. often fails. Therefore, in order to insert the yarn end by suction, it is necessary to apply a suction tube connected to a strong suction source to the inlet of the air false-twisting nozzle and suck the yarn end at once. However, since the air false-twisting nozzle is installed close to the front roller, there is not enough space in front of the nozzle inlet if it is left as it is, and the suction port must have a small diameter, which reduces the suction power. However, the desired results were not obtained.

Object and Structure of the Invention The present invention has been made in view of the drawbacks of the prior art. The present invention provides a method for joining a yarn that can reliably insert the yarn into the yarn path of the yarn.

The object of the present invention described above is to provide a large number of spinning units that heat a fiber bundle spun from a front roller on the most downstream side of a drift mechanism using an air false twisting nozzle provided close to the front roller to form a bound yarn. In a binding spinning device configured in parallel, two adjacent spinning units are connected to form a set, and a space is set between each string, so that the air in the spinning unit that breaks the yarn when splicing the yarn is removed. The false twisting nozzle is moved to the space adjacent to it, and the outlet part of the nozzle is
This is achieved by a yarn splicing method in a binding spinning device, which is characterized in that the yarn end is inserted into the yarn path of the nozzle at a distance from the zero controller.

Example The present invention will be explained in more detail below based on the drawings.

In the spinning unit shown in FIG. 1, a back roller 1,
1', middle apron 2.2' and front roller 3,
An air false twisting nozzle 4 is installed close to and downstream of the front rollers 3, 3' of the drafting device consisting of a draft device 3', and further provided with pull-out rollers 5, 5' and a traversing drum 8. The supplied fiber bundle F is drafted at a predetermined magnification between each pair of rollers of the drafting mechanism, and is shaped into a ribbon 70.
The yarn is spun from the controller 3゜3', introduced into the air false twist nozzle 4, heated by the swirling flow emitted from the injection hole inside, and simultaneously wound by the surface fibers to become the so-called binding yarn Y and sent to the pull-out roller. 1? is placed on bobbin B which is gripped by 5 and 5', guided to traverse drum 8, and supported by arm 9. It is formed as a cage P.

As shown in FIG. 2, the spinning unit is assembled as a set with two adjacent spindles each sharing a draft mechanism, particularly tom rollers 1 and 2. A space H is provided between the adjacent lines. It is being A pressurizing device, a driving device, a positioning device for the air nozzle 4, etc. are arranged within the interval H' of each set. While the air false twisting nozzle 4 is spinning the yarn, it is at the normal spinning position A shown by the solid line in the figure, but when yarn breakage occurs and splicing is performed, the distance H is changed as shown by the chain line. It moves to the threading position B set in the front row 23.3'
It is designed so that it can be removed from the front.

This displacement between the A and B positions is achieved by passing through a sliding hole provided in a holder 10 that is integrally attached to the air false twisting nozzle 4 so as to support the air false twisting nozzle 4. This is carried out by a moving mechanism 49, which will be described later, using two guide bars 11 provided parallel to each other as moving paths.

When yarn breakage occurs during spinning, the arm 9 supporting the package P separates the package P from the drum 8 and supports it by a push-up mechanism (not shown), while the draft mechanism immediately stops only the back rollers 1 and 1'. Since the other rollers continue to rotate, the fiber bundle F is cut between the pack rollers 1, 1' and the middle aprons 2, 2'.
It is held in the state shown in FIG. 3A.

This yarn breakage signal is transmitted to an automatic yarn splicing machine that travels around on a rail along the front of the binding and spinning device, facing each spinning unit, and this yarn splicing machine immediately It arrives in front of the unit and stops at a fixed position. At this point, the connector provided on the yarn splicing machine side is activated, and the high-pressure air pipe and suction air i4 pipe arranged along the machine base are connected in order to obtain the driving force necessary for the subsequent yarn splicing operation.

Regarding these means, for example, Japanese Patent Application No. 57-2185
It is disclosed in No. 7.

The package P separated from the drum 8 is supported by a package drive roller 20 provided in the yarn splicing machine. The broken yarn end wound around the package P by the reverse rotation of the roller 20 and the unillustrated yarn end pick-up, quake, and 7° mechanisms is picked up from the package surface, and then passed to the unillustrated yarn end take-up mechanism. As the mechanism moves, it is transferred to the beading roller 22 located at the standby position C shown in FIG. 3B.

The single roller 22 has a structure shown in FIG.

That is, a drive roller 22a connected to a drive motor 41,
It consists of a suppression roller 22b rotatably supported by an L-shaped member 44 rotatably supported by a pin 43. The L-shaped member 44 is pressed against the pressing roller 22b by a compression spring 45.
The pressure roller 22b is urged in the direction of pressing against the drive roller 222a, and the pressure roller 22b can be swung in the direction of separating from the drive roller 22& against the pressing force of the compression spring 45 by the electromagnetic solenoid 46. Both rollers 22a.

When 22b is in a press-contact state with the yarn being held between them, the drive motor 4
1 in the forward or reverse direction, the yarn is sent out in either the forward or backward direction, and both rollers 22a, 22b
When they are in the open state due to the action of the solenoid 46, the thread is released from being held.

The beesing roller 22 is mounted on a moving mechanism 49 and can be displaced along a predetermined path. That is, the moving mechanism 49 has a structure as shown in FIG. It is shifted from the C position to the D position and is combined with the air false twisting nozzle 4 as described later. Further, the arm 50 and the air cylinder 51 are both placed on a carrier 52, and the key. The rear 52 has a dual stroke cylinder 5 which will be described later along the rail 53.
4 is made movable in a direction perpendicular to the plane of the drawing, thereby displacing the beathing roller 22 and the air false twisting nozzle 4 combined therewith by a predetermined distance parallel to the axis of the front rollers 3, 3'. It is done as it should be.

Next, the piecing roller 22 is displaced as a whole to the above-mentioned position (FIGS. 3B and 5) by the action of the air cylinder 51 while gripping the yarn end, and the air false-twisting nozzle 4
The relative positions of the two are fixed here.

Further explaining the details with reference to FIGS. 6 and 7, a stud 14 is loosely fitted on the beat tongue roller 22 side by penetrating a pair of mounting pieces 13 and 13 that are fixed and protruding from a part of a bracket 30. . At both ends of the stud 14, positioning members 15.15 are attached that extend in the direction of movement of the piecing roller 22 and have tapered ends.

A spring 16 is loosely fitted into the stud 14 between the mounting pieces 13.13. On the other hand, air false twisting nozzle 4
As shown in FIG. 8, the holder 10 has a U-shaped cross section along a plane including the nozzle axis and the axis of the piecing roller 6 to be combined, and its open side faces the direction of movement of the piecing roller 22. Furthermore, the inner dimension on the open side is made equal to the outer dimension between the positioning members 15 and 15.

In such a configuration, the piecing roller 22 as shown in FIG.
When the air false-twisting nozzle 4 approaches the air false-twisting nozzle 4 which is waiting in the above-mentioned position A, the positioning member 15.15 enters into the nozzle holder 10 and tightly engages with the inner circumferential wall thereof, and in the final position the nozzle is closed as shown in FIG. The outlet 4b and the center line (thread gripping line) of the piecing roller 22 are aligned on the same axis.

Even if there is a slight misalignment in the alignment between the air false-twisting nozzle 4 and the piecing roller 22, the cheating part of either the left or right member 15 will first come into contact with the left or right wall end of the holder 10 during assembly. 14 is moved in the axial direction against the elastic force of the spring 16 by receiving a lateral force, and is automatically aligned.

The air false twisting nozzle 4 combined with the piecing roller 22 in this manner then moves along the guide bar 11 to the normal spinning position in front of the front rollers 3, 3' as the carrier 52 is displaced by the action of the dual stroke cylinder 54. Shift from A to threading position B.

The structure of the dual stroke cylinder 54 is shown in FIG. 11, with pistons 60 and 60a, respectively.

It has a structure in which two left and right cylinders 62.62m each consisting of piston rods 61 and 61m are connected in series.

The boat 6 to the right of the right cylinder 62a in the figure
When compressed air is introduced into the right cylinder 62& from 3, the piston 601L moves to the left, and the piston rod 61a, which extends into the left cylinder 62 through the partition wall 70, comes into contact with the piston 60 of the left cylinder. is displaced to the left so that when the right piston 60IL reaches the left end, the left piston 60 is located at the center position X of the left cylinder 62. In this state, when compressed air is introduced from the right port 64 of the left cylinder 62 and discharged from the left boat 65, the piston 60 independently moves further to the left and reaches the left end Y of the left cylinder 62. Conversely, if compressed air is introduced from the port 65 and discharged from the port 64, and then the compressed air is allowed to be discharged from the boat 66 of the right cylinder 621, the piston 60 pushes the piston rod 61a to the right and moves the left cylinder marrow 2.
reaches the right end 2. That is, by controlling the supply and discharge of compressed air, it is possible to set the piston 60 in three positions I, II, and III.

This dual stroke cylinder 54 engages with the center portion of the carrier 52 via its piston roller 1, and as the piston 60 moves, the carrier 52 is displaced along the rail 53, thereby causing the beeing roller 22, The air false twisting nozzle 4 also moves along the guide bar 11. For example, if the above-mentioned position (2) is set corresponding to the A position of the air false twist nozzle 4, that is, the normal spinning position, then the (2) position or (2) position is determined by a distance corresponding to the threading position B, respectively. For example, if the air false twisting nozzle that is the object of the yarn splicing operation is 4R in FIG. 2, it must be moved to the right when splicing, and if it is 4L, it must be moved to the left. The first position or the second position is controlled depending on the direction of displacement. With this configuration, it is possible to move all the spinning units to the threading position by one moving mechanism provided in the yarn splicing machine.

Due to the displacement of the air false twisting nozzle 4 by the mechanism described above, the front face of the nozzle inlet 4& is separated from the surface of the 70 controllers 3, 3' as shown in FIG. face to face.

In this state, the yarn end suction tube 21 provided in the yarn splicing machine moves forward to reach the air false twist nozzle inlet 4a as shown in FIG. 3D.
It comes into contact with the air and does not exert an inhalation effect on it.

At the same time, the thread, the cage drive roller 20 and the beading roller 22 are reversed, and the yarn end is fed into the yarn path from the outlet 4b of the air false twist nozzle.

Due to the combination of the beading roller 22 and the air false-twisting nozzle 4, the axis of the yarn end held by the beading roller 22 is in a position pointing exactly toward the outlet 4b of the air false-twisting nozzle. The introduction of the yarn ends into the air false-twisting nozzle can be carried out very easily. The yarn end suction tube 21
When a certain length of yarn end is inserted into the air false twist nozzle 4 by the suction of air and active feeding from the piecing roller 22, the piecing roller 22 stops rotating. At this time, the feeding length is controlled so that an excessive length of yarn is not sucked into the yarn end suction tube 21.

In this state, the yarn end suction tube 21 begins to retreat to the standby position while exposing a portion of the yarn end suctioned between its tip and the air false twist nozzle inlet 4& (FIG. 3E). At this time, the small-diameter yarn end gripping tube 28 having a suction action, which has been waiting in the direction perpendicular to the yarn axis, moves forward, brings its tip into contact with the exposed portion of the yarn, and suctions the yarn end from the lateral direction. It is received from the suction tube 21. As mentioned above, the length of the yarn being sucked into the yarn end suction tube 21 is controlled so that it does not become too long.
The suction force on the yarn end by the yarn end suction tube 21 is
Even if the yarn end gripping tube 28 has only a relatively weak suction effect as the suction force gradually weakens as the yarn moves backward, the yarn end can be smoothly transferred and held in a straight line within the tube. The yarn end gripping tube 28
is made to have a smaller diameter than the yarn end suction tube 21 in order to convey the yarn end to a narrow space within the draft mechanism as will be described later.

When this transfer of the yarn end is completed, the yarn length necessary for the yarn splicing operation described later is adjusted by the beathing roller 22 to the yarn end gripping tube 28.
further supplied within.

In the draft mechanism, the top roller 3' of the front rollers 3, 3' is not shown. -By mechanism? The tom roller 3 can be moved into and out of contact with the tom roller 3, but up to this point it has been moved away from the bottom row 23 by a push-up mechanism attached to the yarn splicing device, as shown in FIG. 3B. The air false twisting nozzle 4 through which the yarn end is inserted is connected to the piecing roller 2
2 and returns to the normal spinning position A. At this time, the yarn end gripping tube 28 also synchronizes with the air false twisting nozzle 4 to convey the yarn end to the gap between the front rollers 3 and 3' so that it can be gripped by the rollers. position. This is shown in Figure 3F.

Next, the pack rollers 1, 1' restart operation, and at the timing when the fiber bundle tip reaches the front roller 3 via the middle apron 2, 2', the lever of the front top roller 3' is operated to move the front roller 3.3. 'The yarn end and the fiber bundle tip are overlapped and gripped between them, and at the same time, the supply of high-pressure air to the air false twisting nozzle 4 is restarted, and the beading roller 22 is rotated in the normal direction in accordance with the regular spinning speed. . As a result, the fiber bundle tip and yarn end are heated and combined within the nozzle, and then pulled out from the nozzle. This beesing roller 22
Prior to normal rotation, the cages A and P are rotated while being accelerated by the package drive roller 20, so that the yarn whose spinning has been restarted is wound around the package P. When the rotation of the package P reaches the specified speed, the package P
is brought into contact with the traversing drum 8 from the drive roller, and at the same time, the beading roller 22 releases its grip on the yarn and returns to the normal spinning state. After that, each beasing roller 22, No. 4
The cage drive roller, yarn end gripping tube 28, etc. return to their original positions in preparation for the next yarn breakage.

Effects of the Invention According to the present invention, although the spinning units of the bundling spinning device are arranged in sets of two spindles, and the space for displacing the air false twisting nozzle is secured on both the left and right sides of each set, the space is small. Since the left and right spinning units are shared, the length of the combined machine can be greatly reduced, and by adopting a dual stroke cylinder, only one type of movement mechanism can accommodate displacement of both the left and right units. This makes it possible to simplify the configuration of the yarn splicing machine.

[Brief explanation of drawings]

Fig. 1 is a side view of the binding spinning device during spinning, Fig. 2 is a plan view showing part of the arrangement of spinning units, and Figs. 3A to 3F.
The figure is an explanatory diagram showing the procedure of yarn splicing operation, Fig. 4 is a side view showing the structure of the beading roller, Fig. 5 is a plan view showing the moving mechanism of the beading roller, and Figs. 6 and 7 are respectively Front view and plan view showing the retaining means on the piecing roller side, No. 8
The figure is a side view showing the retaining means on the air false twisting nozzle side, Figures 9 and 10 are explanatory diagrams showing the combination of the air false twisting nozzle and the piecing roller, and Figure 11 is a side view showing the structure of the dual stroke cylinder. FIG. 3.3'...Front roller, 4.4R, 4L...
Air false twist nozzle, 22... piecing roller, 54...
・Dual stroke cylinder. Figure 1 Figure 2 Figure 3A Figure 3B Figure 3C Figure 3D Figure 3E @3F Figure 8 Figure 10 Figure 11

Claims (1)

[Claims] 1. A large number of spinning units that heat the fiber bundle spun from the front roller on the most downstream side of the draft mechanism with an air false twisting nozzle provided close to the front roller to form a binding yarn. In binding spinning devices configured in parallel,
Two adjacent spinning units are connected to form a set, and a space is set between each string, so that when splicing the yarn, the air false twisting nozzle of the spinning unit that has broken the yarn is placed in the adjacent space. 1. A method for splicing yarn in a binding and spinning device, which comprises moving the nozzle so that the outlet part of the nozzle is separated from a front roller, and then inserting the yarn end into a yarn path of the nozzle. 2. The yarn piecing method according to claim 1, wherein the air false twisting nozzle is moved by a moving mechanism that can arbitrarily select three positions along the parallel direction of the spinning units.