JP3080113B2 - Core yarn feeder in core yarn manufacturing equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a core yarn feeding device in a core yarn manufacturing device.

[0002]

2. Description of the Related Art A core yarn in which a filament yarn is disposed on a core and the periphery thereof is covered with a short fiber has a feature that it has both excellent strength of a filament yarn and good feeling of a spun short fiber yarn. In the device for manufacturing this core yarn, the core yarn is sent to a draft part of a spun yarn manufacturing device, where it is merged with a sliver in the draft, a short fiber is attached to the core yarn in the draft part, and the core yarn is spun by an air spinning nozzle. The core yarn is completed by entanglement with short fibers. In order to automatically feed the core yarn to the predetermined position at the time of starting the apparatus, a yarn feeding device for unwinding the core yarn from its package and sending it to the spinning unit inlet is required.

[0003] Conventionally, a yarn feeding device that has been commonly used is a device in which a core yarn is sucked by air soccer, sent through a thin tube into an air current and sent to a draft part, where it joins a sliver in the draft.

However, the tension required for unwinding the yarn from the package differs depending on the type of yarn, the position of the unwinding start point, and the like. The dependent core yarn was not smoothly unwound, and it sometimes failed to feed the core yarn to the draft part.

[0005]

SUMMARY OF THE INVENTION In view of the above, the present invention has been made in view of the above circumstances, and therefore, when manufacturing a core yarn, regardless of the type of the core yarn, suction of the core yarn from the core yarn package at the start of suction by air sucker is started. An object of the present invention is to provide a core yarn feeding device in which unwinding is reliably performed.

[0006]

SUMMARY OF THE INVENTION A yarn feeder for a core yarn manufacturing apparatus for feeding a core yarn by air soccer, comprising: a core yarn package ;
Between the air sucker provided with Pukatta, it is provided a means for producing slack in core yarn, the core yarn end gripped by the clamp cutter prior to the air sucker starting
Under such a condition, the means for causing the slack is activated.

[0007]

In the apparatus according to the present invention, when the core yarn manufacturing apparatus is stopped due to yarn breakage or other reasons and the operation of the air sucker is stopped, the core yarn is cut by the clamp cutter.
After clamping the end of the thread, the means for slackening the core thread is activated prior to the start of the air sucker . Airsa
The yarn end of the car exit is clamped inside the air soccer
Not be pulled back, when the core yarn manufacturing apparatus is restarted, the core yarn of the first slack condition is aspirated. Then, when the yarn speed of the sucked core yarn is increased, the drawing of the core yarn from the core yarn package starts. Since the core yarn in the slack state at the initial stage of the withdrawal is easily sucked by the air sucker, troubles associated with unwinding difficulties at the time of restarting operation are avoided.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS In a core yarn feeding device of the present invention , a package P
Means for causing the core yarn F to be slack between the air soccer 1 and the air soccer 1 is arbitrary, and various means can be adopted.
Examples thereof are shown in FIGS.

FIG. 1 shows a structure in which a core is provided between a core yarn package P and an air sucker 1, more precisely, between a guide G on the package P side and a tensioner T which applies tension to the yarn entering the air sucker 1. A movable guide 2 that can be displaced in a direction intersecting with the yarn F is provided. During normal operation, the movable guide 2 is arranged along a straight line connecting the guide G and the tensor T (that is, along the running path of the core yarn F during normal operation). When the core yarn F is slackened, the movable guide 2 is cut off by the clamp cutter device described below, the end of the core yarn is clamped, and then the movable guide 2 is moved to a position 2 ′ away from the path with the core yarn F hooked. , The core yarn F is pulled out of the package P and is bent into a V-shape as indicated by a two-dot chain line F '.
After that, if the movable guide 2 is returned to the original position, the core thread F is left in a loose state between the package P and the air sucker 1.

In FIG. 2, two movable guides similar to those in FIG. 1 are prepared. Two movable guides 3,
4 can be displaced in directions opposite to each other with respect to the core yarn F traveling path. More specifically, movable guides 3 and 4 are supported at both ends of a swing arm having a central portion as a fulcrum, the swing arm is swung when the apparatus is stopped, the movable guide 3 is at the 3 'position, and the movable guide 4 is 4 ′
When the movable guides 3 and 4 are returned to the original positions by displacing the core yarns F to the original positions, the core yarns F indicated by two-dot chain lines F ' It remains loose with Air Soccer 1.

In FIG. 3, another air soccer 5 is arranged between the package P and the air soccer 1 so that an airflow in a direction intersecting with the core yarn F can be applied. When the air soccer 5 is actuated to cause slack, the core yarn F is blown to the side by an air current, and the core yarn F is pulled out of the package P by the tension generated thereby. If the air soccer 5 is stopped after a sufficient amount of the core yarn F has been pulled out, the core yarn F 'is left loose between the package P and the air soccer 1.

In FIG. 4, a flat slack tube 6 is disposed in place of the air sucker 5 in the example of FIG. 3 so that the opening thereof is close to the running path of the core yarn F during normal operation. . If a suction airflow is generated for a short time when loosening is to be caused, the core yarn F is drawn into the slack tube 6 by the airflow flowing into the slack tube 6,
When the airflow is stopped, the sucked core yarn F 'remains slack.

Next, an embodiment of the present invention employing the slack generating means shown in FIG. 1 will be described with reference to FIG.

The core yarn feeding device is basically of a known structure including an air soccer 1, a tensor T, a guide G and the like.
It is arranged to face the sliver S between the apron 8 of the draft device and the front roller 9 via the funnel-shaped guide 7. The movable guide 2, which is a slack generating means attached to the core yarn feeding device, is made of an L-shaped wire fixed to the tip of a pivotable arm 11 with the support shaft 10 as a pivot. Are arranged so as to be above the core thread F, but can be displaced to a position 2 'in the figure by turning the arm 11.

An operating rod 12 for turning the arm 11
Is connected to the control system of the back roller 13 of the draft device.

Next, the driving means of the back roller 13 and its control system will be described. Draft back roller 1
The power transmission system 3 has a power transmission system independent of the apron 8 and the front roller 9 so that the supply of the sliver S can be stopped when the yarn breaks. That is, the back bottom roller 13a has a pulley 14 integrated therewith, while a pulley 17 is provided on an output shaft 16 of an electromagnetic clutch 15 that blocks power transmission from a power source (not shown). A belt 18 is stretched between the pulley 17 and the belt 18. A micro switch 20 is inserted in the power supply circuit of the electromagnetic clutch 15, and when the micro switch 20 is turned on, the clutch 15 is turned on. In addition to the pulley 17, a disk-shaped stopper 22 provided with a plurality of notches 21 on the circumference is fixed to the output shaft 16 of the electromagnetic clutch 15. The operation arm 25 is pivotally supported by a support shaft 26, and one end 25a of the operation arm 25 is engaged with a push button operation lever 27 of the micro switch 20.
The micro switch 20 is turned on at one position of the turn and the micro switch 20 is turned off at another position of the turn. The other end 25b of the operation arm 25 is a stopper 22
The operation arm 25 is engaged with the notch 21 when the micro switch 20 is turned off, but is not engaged when the operation arm 25 turns on the micro switch 20. ing.

A rod 28 is connected to the operation arm 25 on the side of the engagement end 25b of the stopper 22.
The operation arm 25 can be turned by moving the arm vertically. When the rod 28 is lowered, the operation arm 25 is moved.
Takes a position (shown) in which the stopper engaging end 25b is separated from the stopper 22 and the micro switch 20 is turned on, and when the rod 28 is raised, the operating arm 25 engages the stopper engaging end 25b with the notch 21 of the stopper 22 and The position where the micro switch 20 is turned off is taken.

The rod 28 is connected via a pivotable arm 29 and a rod 30 to a push button 31 disposed on the front so that it can be operated from the front of the core yarn manufacturing apparatus. The push button 31 has a lock mechanism. The iron plate 32 is fixed to the rod 28,
The rod 28 can be held at the lowered position by the attraction force between the iron plate 32 and the electromagnetic magnet 33. The electromagnetic magnet 33 is a slab catcher 34
It is activated only when a normal running signal is issued from.

The operating rod 12 for rotating the guide support arm 11 is connected to a rod 28 by a connecting member 28a , and the operating rod 12 is interlocked with the vertical movement of the rod 28.

During normal operation of the core yarn manufacturing apparatus, the electromagnetic magnet 33 continues to operate, and the iron plate 32 is attracted.
The rod 28 integral with the iron plate 32 is lowered to
Turns on the micro switch 20, and the stopper engagement end 25b is separated from the notch 21 of the stopper 22. Therefore, the power transmitted to the pulley 17 via the electromagnetic clutch 15 is transmitted via the belt 18 to the back bottom roller 13a.
Is rotating. At this time, since the operation rod 12 is also lowered to pivot the guide support arm 11 upward, the guide 2 does not bend the traveling path of the core thread F. In this state, the core yarn F enters between the apron 8 of the draft device and the front roller 9 via the guide G, the tensor T, and the air soccer 1, where it joins the sliver S coming out of the apron 8 and becomes the front. Via the roller 9, enter the air spinning nozzle 35,
Here, the core yarn is completed, and the delivery roller 3
6, and is wound by a winding device (not shown) via the slab catcher 34.

In this state, if the yarn breaks or a defective yarn passes through the slab catcher 34 and is detected by the slab catcher 34 and the power of the electromagnetic magnet 33 is cut off, the attractive force of the electromagnetic plate 33 to the iron plate 32 is reduced. restoring force of the spring 3 8 to pivot the arm 29 in a counterclockwise needle direction so eliminated, pushes up the rod 28. As a result, the operation arm 25 pivots in the clockwise direction, the micro switch 20 is turned off, and the electromagnetic clutch 15 is turned off.
1 to stop the inertial rotation, the back roller 13
Stops immediately and stops supplying the sliver S. At the same time, the operation rod 12 is also pushed up, so that the guide support arm 11 turns in the counterclockwise direction and is displaced to the position of the guide 2 '. Since the clamp cutter 37 at the exit of the air sucker 1 clamps the core yarn F at the same time as the yarn breakage,
When the guide 2 is displaced to the position 2 'with the core thread F hooked and slackened like the core thread F', the core thread F is pulled out of the package P by that amount.

When the operation is resumed after piecing,
The rod 30 that moves rightward when the push button 31 is pressed
When the arm 29 pivots in the clockwise direction and the rod 28 is pulled down, the operation arm 25 operates in the direction opposite to that in the case where the thread breaks, and the electromagnetic clutch 15 is turned on and the stopper 22 is turned on.
And the back roller 13a is driven. At the same time, the valve (not shown) of the air soccer 1 is opened to start the operation, and the suction of the core yarn F is started. The operating rod 12 is pulled down in conjunction with the lowering of the rod 28, and the guide support arm 11 and the movable guide 2 are returned to their original positions. Therefore, immediately after the operation is resumed, the loosened core yarn is provided between the guide G and the tensor T. There will be F, which is easily picked up by air soccer 1.

In the above embodiment, the means for causing slack is activated in conjunction with the stoppage of the core yarn manufacturing apparatus to loosen the core yarn. However, after the core yarn manufacturing apparatus is stopped, the slack is formed before the start of air soccer. The means for causing slack may be activated, that is, the means for causing slack may be activated prior to the start of air soccer.

[0024]

As described above, the present invention relates to a yarn feeding device for a core yarn manufacturing device for feeding a core yarn by air soccer, comprising a core yarn package and an outlet portion.
Between the air sucker provided with a clamp cutter, it is provided a means for producing slack in the core yarn, the core yarn by the clamp cutter prior to the start of the d A football
Means for causing the loosening while holding the end is
Having to so that is actuated upon yarn breakage yarn end is click at the outlet section
The lamp is ramped and the core yarn is released from the package by the operation of the guide
When the device is started, the slack is created.
The presence of the fiber makes it possible to suck the core yarn with extremely low tension,
The core yarn can be reliably sent to the core yarn manufacturing device regardless of its type.

[Brief description of the drawings]

FIG. 1 is a schematic view showing an example of a means for causing a slack in a core yarn.

FIG. 2 is a schematic view showing another example of a means for causing a slack in a core yarn.

FIG. 3 is a schematic view showing another example of a means for causing a slack in a core yarn.

FIG. 4 is a schematic view showing another example of a means for causing a slack in a core yarn. To

FIG. 5 is a schematic view showing a use state of an embodiment of the present invention.

[Explanation of symbols]

 1,5 Air soccer 2,3,4 Movable guide 6 Suction pipe 11 Arm 12 Operation rod 13 Back roller 15 Electromagnetic clutch

Claims (1)

(57) [Claims] 1. A met yarn feeding apparatus for a core yarn production apparatus for performing the air sucker to feed the core yarn,
A core yarn package, between the <br/> air sucker provided with a clamp cutter outlet, be provided with means for creating slack in the core yarn, the prior to the air sucker starting
While holding the core yarn end with the clamp cutter,
Core yarn feeding apparatus in the core yarn manufacturing apparatus according to claim and Turkey actuates the means for generating the serial slack.