JP2001072333A - Method and device for delivering roving - Google Patents

Abstract

PROBLEM TO BE SOLVED: To continuously deliver a roving by automatically cutting a delay thread generated between a roving and a roving creel by a delay yarn cutter regularly provided in the vicinity of the delivering position of the roving. SOLUTION: A delay thread cutter 4 (manufactured by NT Co., an NT cutter fixed to a base), a roll 5 (roll diameter: 150 mm, material: NBR rubber, hardness: 70), and a winder 6 are arranged, and an outside taking glass roving creel 3 (average fiber diameter: 17 μm, tex count: 2,310 g/km, strand number: 4000) is set. A roving 1 is delivered so as to wind on the roll 5, and the delivered roving 1 is wound at 5 m/min by the winder 6. Since the delay thread cutter 4 is provided, a generated delay thread 2 is cut just after generation, so that it never develops to surround the shell of the roving creel. Accordingly, the roving 1 can be automatically and continuously delivered at high speed.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method and an apparatus for feeding a roving from a roving creel.
More particularly, the present invention relates to a method and apparatus for unmanned and continuous unreeling of roving from a roving creel for takeout without disconnection of the roving by a delay yarn.

[0002]

2. Description of the Related Art Rovings used as reinforcing materials for FRP and FRTP are usually shipped in the form of roving creels. There are two types of roving creels: internal roving creels that use the lobing from the inside of the roving creel and external lobing creels that use the roving from the outside of the roving creel. And use it. When the roving is pulled out from the roving creel for use, a part of the strand constituting the roving that has been drawn is torn by the roving of the roving creel and remains on the outer periphery of the roving creel. The resulting inconvenience is known (FIG. 2). The strand remaining on the outer shell of the roving creel is usually called a delay yarn.

If the cutting of the roving occurs during the manufacturing operation, not only does the mixing ratio of the fiber in the product change, but also the manufacturing operation is stopped, so that the processing of cutting the delayed yarn has been performed manually. . In order to cut off the delayed yarn, it is necessary to provide additional personnel, which requires extra labor costs. In addition, since the feeding speed can be increased only within a range that can be followed by a human processing speed, the production speed cannot be increased, and there is a problem in improving productivity and the like.

[0004] On the other hand, when the roving is drawn out from the internal roving creel and used, there is no danger of the roving breaking due to the generation of a delayed yarn.
It is known that the twisting of the roving causes a decrease in the strength of the obtained product. For this reason, an automatic device for completely removing the twist of the roving has been developed, but since it is an expensive device, there is a problem that the production cost becomes extremely high, which is not preferable from the viewpoint of industrial use. Was. As described above, means for preventing cutting of roving and feeding out roving with good productivity and efficiency has not been developed so far.

[0005]

SUMMARY OF THE INVENTION An object of the present invention is to provide a method and an apparatus for automatically cutting off a delay yarn generated when unwinding a roving from a roving creel for taking out and continuously unwinding a roving. is there.

[0006]

Means for Solving the Problems The present inventors have conducted intensive studies on a method and an apparatus for stably and continuously feeding a roving from a roving creel for take-out, and as a result, the roving creel and the roving that have been fed have been examined. A method and apparatus for automatically installing a delayed yarn cutting machine in the middle, that is, in the vicinity of the feeding position of the roving, and before cutting the roving by the generated delayed yarn, that is, immediately after the occurrence of the delayed yarn. The present inventors have found that the object has been achieved, and have completed the present invention.

The present invention has the following configuration.

(1) A delayed yarn generated between the roving creel fed from the roving creel for taking out and the roving creel is automatically cut by a delayed yarn cutting machine permanently installed near the position where the roving is fed. A method for paying out roving from a roving creel for taking out.

(2) The method for feeding out a roving from the roving creel for taking out according to the above (1), wherein the height of the feeding position of the roving is kept constant when feeding the roving.

(3) The roll is arranged so as to always contact the roving creel for taking out according to the diameter of the roving creel for taking out, and the roving is fed out while being wound along the roll so as to determine the feeding position of the roving. (1) characterized in that the height is kept constant.
Or a method for feeding out roving from the roving creel for take-out according to item (2).

(4) The roving drawn out from the roving creel for take-out is drawn out without being entangled with the roll due to static electricity generated by friction with the roll or viscosity of the roll.
(3) A method for feeding out roving from the roving creel for take-out according to any one of the above (3).

(5) The method of paying out roving from the roving creel for taking out according to (4), wherein the material of the roll is conductive.

(6) The method of paying out roving from the roving creel for taking out according to (4), wherein the material of the roll is a rubber-based material.

(7) The method for paying out roving from the roving creel for taking out according to any one of the above (4) to (6), wherein moisture or fine powder is constantly adhered to the roving creel or roll.

(8) The lagging yarn between the roving creel fed from the roving creel for take-out and the roving creel is automatically cut by a lagging yarn cutter permanently installed near the position where the roving is fed. A device for feeding a roving from a roving creel for taking out.

(9) The apparatus for feeding out a roving from the roving creel for taking out according to the item (8), wherein the height of the feeding position of the roving is kept constant when the roving is fed.

(10) The roll is arranged so as to always contact the roving creel for taking out according to the diameter of the roving creel for taking out, and the roving is fed out while being wound along the roll so that the roving unwinding position is determined. The apparatus for feeding out a roving from the roving creel for taking out according to the above (8) or (9), wherein the height is kept constant.

(11) The rovings drawn out from the take-out roving creel are drawn out without being entangled with the rolls due to static electricity generated by friction with the rolls or viscosity of the rolls.
(10) An apparatus for feeding out a roving from the roving creel for taking out according to any one of the above (10).

(12) The apparatus for feeding out a roving from the roving creel for taking out according to the above (11), wherein the material of the roll is conductive.

(13) The material of the roll (11) or (12), wherein the material of the roll is a rubber material.
An apparatus for feeding out a roving from the roving creel for take-out according to the item.

(14) Roving from the roving creel for taking out according to any one of the above (11) to (13), wherein a device for constantly adhering moisture or fine powder to the roving creel or roll is installed. A device that feeds out.

[0022]

BEST MODE FOR CARRYING OUT THE INVENTION The present invention will be specifically described below.

The roving creel for taking out used in the present invention may be a single yarn roving combining a single type of strand or a combined yarn roving combining a plurality of types of strands having different finenesses and physical properties from the outside of the roving creel. It refers to one that has been wound into a cylindrical shape so that it can be used by being fed out. In addition, roving consists of a bundle of many continuous fibers (strands).
Inorganic fibers such as carbon fibers, organic fibers such as PET, polypropylene, and syndiotactic polystyrene, or mixed fibers thereof are used.

The delayed yarn cutting machine used in the present invention is not particularly limited as long as it can cut the delayed yarn. For example, a commercially available cutter blade (trade name, manufactured by NTT Corporation):
NT Cutter) and piano wire can be used. Usually, these are used by being fixed to a table or the like.

In the present invention, when a delayed yarn cutter is permanently installed near the roving unwinding position, it is necessary to keep the roving unwinding position constant. For this purpose, the position of the installed delayed yarn cutting machine is mechanically moved with respect to the method of fixedly installing the delayed yarn cutting machine or the feeding position of the roving which fluctuates depending on the diameter of the roving creel for taking out. Method.

In the present invention, the position where the delayed yarn cutting machine is installed is in the vicinity of the roving unwinding position, that is,
Between the roving creel and the unrolled roving,
There is no particular limitation as long as the delayed yarn can be cut without touching the roll or roving creel. However, if the position of the blade such as a cutter constituting the delayed yarn cutting machine is located farther than 30 mm from the unwinding position of the roving, the delayed yarn grows excessively and damages the unrolled roving. There is fear. For this reason, within 30 mm from the feeding position of the roving, preferably 25 mm
It is preferable that the tip of the blade or the like of the delayed yarn cutting machine be located within the range.

When the roving unreeling position is kept constant, the relative positional relationship between the roving creel and the roll must be such that the roving creel and the roll are in contact with each other. At this time, it is possible to use a method in which the roving drawn out from the roving creel for taking out is fed while being wound along a roll. At this time, the delayed yarn cutting machine may be installed near the shaft axis of the roll or the roving creel or near the feeding position of the roving from the vicinity thereof. For example, if the roll and the roving creel are installed at the left and right positions, an air cylinder may be installed on the roving creel or the roll, and the roving creel and the roll may be designed to be always in contact.

When the roving is fed in a certain direction, the rotation speed of the roving creel becomes excessively higher than the feeding speed of the roving (excessive rotation of the roving creel), or the roving creel rotates in the direction opposite to the feeding direction of the roving. (Reverse rotation of the roving creel) must be prevented. In addition, it is necessary to use a method and an apparatus for moving the position of the delayed yarn cutting machine as the diameter of the roving creel decreases. For this purpose, by providing a tension applying device (FIG. 4) for applying tension to the shaft or the paper tube retainer on which the roving creel is mounted, the roving can be fed out in a certain direction. Further, by disposing the roll provided with the delayed yarn cutting machine in contact with the roving creel, the roll can be fed out in a manner corresponding to the reduction in the diameter of the roving creel. At this time, the delayed yarn cutting machine (Fig. 4)
By installing on the shaft axis of the roll adjacent to the roving creel or in the vicinity thereof, it is possible to automatically move the position of the delayed yarn cutter in response to a change in the unwinding position of the roving. In the present invention, by using these methods and devices, the delayed yarn can be automatically cut.

As the material of the roll used in the present invention, a conductive material such as a metal is preferably used. This is because if the material of the roll is easy to generate static electricity,
This is because static electricity generated by friction with the roving causes a problem such as the roving being entangled in the roll. Here, if the roll is made of a conductive material, it is preferable because the charge can be easily removed and the problem that the roving is entangled is significantly reduced. As the material of the roll used in the present invention, a rubber-based soft material such as NBR rubber or EPDM is preferably used. This is because using a roll made of a soft material makes it difficult to damage the roving, and conversely, using a roll made of a hard material such as metal may damage the roving. Note that when a roll in which a conductive material such as carbon black is added to a rubber-based material such as EPDM is used, the roll is soft and has good static elimination properties, so that it can be more preferably used. Further, in the present invention, when a roll made of an adhesive material is used, the roving is liable to be entangled. Can be reduced.

As a method for preventing entanglement of roving with a roll used in the present invention, a method for removing static electricity can be used. At this time, a known method such as a method of spraying or applying a small amount of water on the surface of the roving or the roll or a method of using a static eliminator can be used.

The strands constituting the roving used in the present invention are not particularly limited, but include glass fibers,
General-purpose fibers such as carbon fibers can be used, and usually those having an average fiber diameter of 4 to 30 μm are used.

The number of strands constituting the roving used in the present invention and the number of texes are not particularly limited, but those generally comprised of 400 to 10,000 strands can be used. Can be used in the range of 300 to 20,000 g / km. In addition, roving is usually available in the form of direct roving, but in the present invention, roving in any winding form such as bulky roving can be used.

In the present invention, the method of feeding out the roving is not particularly limited, and examples thereof include a method of directly winding a product such as normal FW forming or sheet winding forming around a mandrel or the like and feeding it out. Further, for adjusting the tension of the roving, a method using a take-up device or a take-up device separately, a method in which a take-up roll is pulled out adjacent to the present device, and the like can be preferably used.

The present invention relates to a method and an apparatus for installing a delayed yarn cutting machine in the vicinity of a position where a roving is unwound from a roving unwound from a roving creel for unwinding and a roving creel for unwinding. Is a method and an apparatus for feeding out a roving from a roving creel for external use, which automatically cuts the roving.

[0035]

Next, the present invention will be described in detail with reference to examples and comparative examples, but the present invention is not limited to these examples and comparative examples.

Example 1 A delay yarn cutting machine (NT cutter manufactured by NT Co., Ltd. fixed to a table), a roll (roll diameter: 150 mm, material: NBR rubber, hardness: 70), and a winding machine are arranged as shown in FIG. Then, a glass roving creel (average fiber diameter: 17 μm, tex number: 2,310 g / km, number of strands: 4000) was set as shown in FIG. 1, and the roving was fed so as to be wound around a roll. The film was wound by a winder at a speed of 5 m / min. There was no breakage of the roving due to the growth of the delayed yarn and the delayed yarn.

Example 2 A roving was wound in the same manner as in Example 1 except that the roving speed was 50 m / min. There was no growth of the delayed yarn and no cutting of the roving by the delayed yarn.

Example 3 A delay yarn cutting machine (NT Corporation, NT cutter fixed on a table), a roll (roll diameter: 150 mm, material: NBR rubber, hardness: 70), and a winding machine are arranged as shown in FIG. Then, the glass roving creel is set as shown in FIG. 4, the roving is pinched by a roll, and is fed out in parallel with the ground, and the fed-out roving is taken out by a winder.
The film was wound at a speed of 0 m / min. There was no growth of the delayed yarn and no cutting of the roving by the delayed yarn.

Comparative Example 1 A roving was wound in the same manner as in Example 1 except that a glass roving creel was set in the apparatus shown in FIG. Occurrence of a delayed yarn was recognized, and it was difficult to manually process the delayed yarn, and roving was cut.

[0040]

By using the method and the apparatus for unwinding roving from the roving creel for taking out according to the present invention,
A roving made of inorganic fibers and / or organic fibers can be unmanned and continuously fed out at a high speed. Further, since the generated delayed yarn is cut immediately after the generation, the yarn does not grow so as to surround the outer periphery of the roving creel, and when used as a reinforcing material for a composite material, the intrinsic strength of the fiber can be exhibited.

[Brief description of the drawings]

FIG. 1 is a view showing a method and an apparatus for feeding out a roving from an external roving creel according to the present invention.

FIG. 2 is a view for explaining a state in which a delayed yarn is generated when a roving is fed from a roving creel for taking out.

FIG. 3 is an enlarged view of a portion where a delay yarn in FIG. 2 is generated.

FIG. 4 is a diagram illustrating an example in which a tension applying device is added to a diagram illustrating a method and an apparatus for feeding out a roving used in the present invention.

FIG. 5 is a diagram of a method and an apparatus for feeding a roving from a conventional roving creel for taking out.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Roving 2 Delay yarn 3 Roving creel 4 Delay yarn cutting machine 5 Roll 6 Winding machine 7 Tension applying device

Claims (14)

[Claims] An automatic cutting of a delayed yarn generated between a roving creel fed from an external roving creel and the roving creel by a delayed yarn cutting machine permanently installed near a roving feeding position. A method for paying out roving from a roving creel for taking out. 2. A method for paying out rovings from a roving creel for take-out according to claim 1, wherein the height of the paying-out position of the rovings is kept constant when the rovings are fed out. The roll is arranged so as to always contact the roving creel for taking out according to the diameter of the roving creel for taking out, and the roving is fed out while being wound along the roll so that the height of the feeding position of the roving is increased. 3. A method for paying out roving from a roving creel for taking out according to claim 1, wherein the roving is kept constant. 4. The roving drawn out from the take-out roving creel is drawn out without being entangled with the roll due to static electricity generated by friction with the roll or viscosity of the roll. A method for feeding out a roving from the roving creel for taking out described in Crab. 5. The method according to claim 4, wherein the material of the roll is conductive. 6. The method according to claim 4, wherein the material of the roll is a rubber-based material. 7. The method according to claim 4, wherein moisture or fine powder is constantly adhered to the roving creel or roll for taking out. 8. A method for automatically cutting a delayed yarn generated between a roving creel fed from a roving creel for take-out and the roving creel by a delayed yarn cutting machine permanently installed near a feeding position of the roving. A device for feeding a roving from a roving creel for take-out. 9. The apparatus according to claim 8, wherein the height of the roving feeding position is kept constant when the roving is fed. 10. A roll is disposed so as to always contact the roving creel for taking out according to the diameter of the roving creel for taking out, and the roving is fed out while being wound along the roll so that the height of the feeding position of the roving is increased. The apparatus for feeding out a roving from the roving creel for taking out according to claim 8 or 9, wherein the roving is kept constant. 11. The roving drawn out from the roving creel for take-out is fed out without being entangled with the roll due to static electricity generated by friction with the roll or viscosity of the roll. An apparatus for feeding out a roving from the roving creel for take-out according to the above item. 12. The apparatus according to claim 11, wherein the material of the roll is conductive. 13. The apparatus according to claim 11, wherein the material of the roll is a rubber-based material. 14. A roving from the roving creel for take-out according to any one of claims 11 to 13, wherein a device for constantly adhering moisture or fine powder to the roving creel for take-off or a roll is provided. apparatus.