JP2587863Y2 - Yarn feeder - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a device for sandwiching a traveling yarn between a pair of rollers and driving the roller to feed the yarn.

[0002]

2. Description of the Related Art Conventionally, when a yarn is cut and then sucked by a suction mechanism such as a suction gun or a vacuum suction device, any device-specific device for smooth suctioning has been devised in accordance with the characteristics of the yarn. Did not. However, when the yarn is hard and the surface is slippery, for example, when it is made of glass fiber or carbon fiber, it is difficult to obtain a sufficient suction force only by the suction mechanism.

[0003]

SUMMARY OF THE INVENTION An object of the present invention is to provide a yarn feeder which can surely feed a hard or slippery yarn such as carbon fiber.

[0004]

Means for Solving the Problems The present invention solves the above problems.
Order to solve, and rollers with (A) a flexible surface, corresponding to the roller
Gears, and reduce the number of the rollers or the gears.
One is a yarn feeder connected to the drive system.
Te, (B) the yarn feeding device, for transferring at least carbon fibers
And suction gun or blade
That it is provided on the upstream side of the yarn winding device having a groove.
Features.

A detailed description will be given below with reference to the drawings. FIG. 1 shows one embodiment of the present invention, and is a perspective view when the yarn feeding device 10 of the present invention device is installed in a winding device.
In the figure, 1 is a gear, and 2 is a flexible roller coated with a material having a flexible surface, for example, rubber. Reference numeral 3 denotes a yarn to be fed, for example, a carbon fiber yarn. Gear 1 and flexible roller 2
In this case, the tooth tip of the gear 1 is provided so as to be in contact with or pressed against the surface of the flexible roller 2, and the yarn is fed by sandwiching a carbon fiber yarn 3 between the two. 4
Denotes a motor, and the shaft of the gear 1 is directly connected to the shaft of the motor.
Therefore, the gear 1 is driven and rotated by the motor 4.
The driving method of the gear 1 can employ an appropriate method. Note that either one or both of the gear 1 and the flexible roller 2 may be driven, but it is preferable that the gear be driven as shown. Further, it is preferable that the flexible roller and the gear are in contact with each other in order to securely hold the yarn.

When the carbon fiber yarn 3 is sandwiched between the gear 1 and the flexible roller 2, it is pressed against the surface of the flexible roller by the tip of the gear. At this time, the tooth tip of the gear is pressed so as to bite into the surface of the flexible roller.
Is bent at the tip of the tooth, and can be pushed and spread in the roller axial direction. Therefore, the carbon fiber yarn 3 in a state of a hard round bar before entering the yarn feeder is in a state of being spread out when it exits the yarn feeder. Since the pinching with the shape change of the carbon fiber yarn 3 is performed on the carbon fiber yarn 3, the carbon fiber yarn 3 can be accurately fed without slipping on the yarn feeder. .

The above-described structure is the yarn feeding device of the present invention. FIG. 1 shows a yarn winding device suitable for utilizing such a change in the state of the yarn 3. Reference numeral 6 denotes a bobbin, which is rotated by an appropriate drive system (not shown), and winds the yarn 3 on the bobbin 6 in the state of a winding yarn 7. Reference numeral 8 denotes a thread cutter A provided between the bobbin 6 and the gear 1 near the bobbin 6. 9 is a thread cutter B provided near the gear 1. Reference numeral 5 denotes a suction port of the suction gun located between the gear 1 and the bobbin 6, which is connected to an appropriate air suction mechanism (not shown).

When the bobbin 7 wound on the bobbin 6 is full, the yarn feeder 10 advances to the position shown in the figure in the direction of the arrow to clamp the yarn 3. The yarn 3 is sent out by the gear 1 of the yarn feeder. Since the sent yarn 3 is pressed against the surface of the roller 2 by the tooth tip of the gear 1 as described above, the yarn 3 is rubbed and spread in the roller axis direction. When the yarn 3 is cut by the yarn cutter A8, the supply of the yarn 3 to the bobbin 6 is stopped. At this time, the suction port 5 sucks the yarn 3 continuously sent from the yarn feeding device 10. In this state, the bobbin 6 is replaced.

After the bobbin replacement, the yarn 3 sent from the yarn feeder to the suction port is wound on the bobbin 6. That is, as shown in FIG. 2, the suction port 5 is moved below the bobbin 6 so as to be gripped by the blade groove 11 at the center of the bobbin 6, and the bobbin 6 and the suction port 5 are The yarn 3 is cut in between. In this case, since the yarn is fed in a state where the yarn is softened by the pair of rollers of the yarn feeder 10, the yarn 3 enters the blade groove 11 smoothly, and the yarn hooking and gripping is reliably performed. In this embodiment, the gripping of the thread on the bobbin has been described using the blade groove. However, the suction port 6 may be rotated around the bobbin 6 to wind the thread around the bobbin and grip it. Also in this case, since the yarn is softened, the yarn is securely held on the bobbin. It is preferable that the yarn feeder of the present invention be provided with a known means for moving forward and backward in the direction of the arrow in FIG. The yarn end generated by the cutting is absorbed by the suction port 5 and disappears. After the yarn hooking and cutting, the yarn feeder moves from the yarn path of the yarn 3 to the non-contact position,
Is wound as a winding thread 7 on a bobbin 6.

[0010] When the yarn 3 is fed in a hard state as in the prior art, the winding yarn 7 becomes full and the winding yarn cannot be sucked when the yarn 3 is cut and suctioned. That is, the yarn sagged, requiring human labor, and the workability was sometimes reduced. However, by using the yarn feeding device of the present invention, such a conventional problem can be solved at once.

[0011]

[Effect of the Invention] The yarn feeder of the present invention winds carbon fiber.
Even if you try to take it, the conventional device slips and loosens and
Was not able to perform
Roller and the corresponding gear to rub and spread in the roller axial direction.
To the suction gun.
Is easy to wind the thread around the blade groove,
Work can be continued without any trouble
Excellent effects can be achieved.

[0012]

[Brief description of the drawings]

FIG. 1 is a perspective view showing one embodiment of the present invention.

FIG. 2 is a perspective view showing an embodiment at the time of threading.

[0013]

[Explanation of symbols]

 1: Gear 2: Flexible roller 3: Carbon fiber thread 4: Motor 5: Suction port 6: Bobbin 7: Winding thread 8: Cutting device A 9: Cutting device B 10: Thread feeder 11: Blade groove

Claims (1)

(57) [Scope of request for utility model registration] 1. A yarn feeder comprising: a roller having a flexible surface; and a gear corresponding to the roller, wherein at least one of the roller and the gear is connected to a driving system.
An apparatus, (B) the yarn feeding device, for transferring at least carbon fibers
And suction gun or blade
Yarn feeding device, characterized by being found provided on the upstream side of the yarn winding device having a groove.