JP3176446B2 - Method and apparatus for manufacturing filament material - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for simultaneously producing a plurality of filaments and an apparatus for carrying out the method.

[0002]

2. Description of the Related Art In the manufacture of relatively inexpensive wire rods such as reinforcing bars, a pair of wire-shaped portions having a plurality of rows are formed for the purpose of improving productivity of small objects having a small diameter and saving energy. By the rolling roll, a plurality of linear portions are rolled through a composite linear material that is coupled in the length direction through a thin joint portion,
Japanese Patent Publication No. Sho 56-2588 discloses a method of simultaneously manufacturing a plurality of filaments by cutting a joint portion of the composite filament by using a pair of opposing slit rolls composed of one or a plurality of pairs.
No. 1 and Japanese Patent Publication No. 2-21882. And the slit roll used for manufacture of such a linear material is usually rotatably supported by the bearing.

[0003]

However, when the composite linear material rolled out from the rolling roll enters the slit roll, the slit roll is rotatably supported by bearings. Since the roll which has been made must be rapidly rotated by the entry of the composite wire, a large compressive force acts instantaneously in the axial direction of the composite wire, so that the wire is easily buckled and becomes mis-rolled. There were many cases. In particular, this tendency becomes more remarkable as the rolling speed increases.

[0004] The present invention has been made in view of the above problems, and a method of manufacturing a wire rod which is hardly buckled when a composite wire rod rolled by a rolling roll enters a slit roll, and which is excellent in productivity. And an apparatus therefor.

[0005]

According to the present invention, there is provided a method of manufacturing a wire rod comprising a plurality of wire rods joined by a pair of rolling rolls in a longitudinal direction through a joint. Rolling
In a method for manufacturing a wire material in which a plurality of wire materials are obtained by cutting a joint portion of the composite wire material by a pair of opposed slit rolls , the composite wire material enters at least one of the slit rolls. when, driven to rotate at a circumferential speed the same, or even higher peripheral speed of the rolling rolls
I do .

[0006] Further, a manufacturing apparatus of the present invention suitable for carrying out the above-mentioned method comprises a pair of rolling rolls for rolling the composite wire, and a plurality of rolls obtained by cutting a joint portion of the composite wire. In a wire rod manufacturing apparatus having a pair of slit rolls for obtaining a wire rod, at least one of the slit rolls is rotated such that the peripheral speed thereof is equal to or higher than the peripheral speed of the rolling rolls. An interlocking rotation means for transmitting rotation power from a rolling roll is provided.

[0007]

According to the present invention, when the composite filament material rolled by the rolling roll enters the slit roll, at least one of the slit rolls is equal to or less than the peripheral speed of the rolling roll, that is, the traveling speed of the composite filament material. Since it is rotating at a higher peripheral speed, it is difficult for the axial compression force to act on the filament, and when the peripheral speed is high, the tensile force acts rather,
Buckling of the wire material is prevented, and stable tearing can be performed at the articulation portion.

Further, according to the manufacturing apparatus of the present invention, the rotation and power of the slit roll can be interlocked and transmitted from the rolling roll by the interlocking rotating means, so that the driving means for the slit roll is provided alone. The device can be made compact.

[0009]

FIG. 1 shows an example of an apparatus for producing a linear material according to an embodiment, in which a slit device 2 is installed on a fixed base 3 adjacent to a rolling unloading direction of a rolling mill 1. The rolling mill 1
Is provided with a pair of rolling rolls 4 in a vertical direction, is rotatably supported by a frame 5, and has a drive shaft 6 connected to one end. On the outer peripheral surface of the rolling roll 4,
Although not shown in the figure, a plurality of sets of recesses each having a plurality of rows of wire-shaped portions for forming the composite wire are recessed.

The slit device 2 has a pair of upper and lower slit rolls 7 rotatably supported by bearings 9 provided on a frame side plate erected on both sides of a base 8. Is mounted on a rest bar installed on the fixed base 3 so as to be able to be fixed at an arbitrary position in the width direction. Interlocking gears 11 and 11 are attached to one ends of the roll shafts of the slit rolls 7 and 7 respectively. Since the base 8 can be fixed at an arbitrary position in the width direction of the rolling roll 4, the slit device 2 is mounted on the rolling line of the composite wire rod with respect to any of the holes formed in the rolling roll 4. You can move.

The fixed base 3 is provided with a speed reducer 13 in which a sliding clutch is installed. A pinion gear 14 mounted on an input shaft of the speed reducer 13 is attached to a side end of the rolling roll 4 by a bolt or the like, and can be detached. It is in mesh with the attached gear 15. The output shaft is connected to the rotation shaft of the lower slit roll 7 via a spline shaft 16 and a universal joint 17. Slit roll by these members
An interlocking rotating means 12 for rotating the roller 7 in conjunction with the rotation of the rolling roll 4 is provided. The ratio of the number of teeth of the gears 14 and 15 and the reduction ratio of the speed reducer 13 are such that the peripheral speed of the slit roll 7 (strictly, the peripheral speed at the tearing portion) is equal to the peripheral speed of the rolling roll 4 (strictly, the peripheral speed in the hole type). Same as or 2-5 more than
%. The peripheral speed of the slit roll 7 is about 8 to 17 m / sec.
11 and 11 are not always necessary, and the lower slit roll 7
May be rotated.

The reduction gear 13 is preferably a compact one such as a commercially available planetary reduction gear. Also, if a variable speed reducer is used as the speed reducer, the peripheral speed of the slit roll 7 can be arbitrarily changed within a certain width, and the optimum tension between the rolling roll 4 and the slit roll 7 according to the composite wire material can be obtained. Can be provided. Further, by using the spline shaft 16, even if the slit device 2 moves, the spline shaft
16 expands and contracts, and rotation from the speed reducer 13 is transmitted. Also, by using the universal joint 17, even if the axis of the slit roll 7 and the axis of the speed reducer 13 are slightly shifted, the bearing 9
There is no adverse effect on In addition, by installing a slip clutch in the speed reducer 13, even if a trouble occurs, for example, in which the running speed of the composite linear material as a rolled material becomes higher than the peripheral speed of the slit roll 7, the speed reducer 13 13 is not overloaded and the device is protected.

According to this apparatus, rotational power is transmitted from the gear 15 attached to the rolling roll 4 to the slit roll 7 via the pinion gear 14, the speed reducer 13, the spline shaft 16, and the universal joint 17. Also, by setting the reduction ratio appropriately, the peripheral speed of the slit roll 7 can be reduced.
4 can be easily set to be equal to or higher than the peripheral speed of the die, and it is possible to prevent the generation of an axial compressive force in the composite linear material between the rolling roll 4 and the slit roll 7.

In the above manufacturing apparatus, the power is transmitted from the rolling roll 4 to the slit roll 7 by the gears 14 and 15,
It goes without saying that other types of transmission means, for example, a belt pulley, may be used. FIG. 3 is an explanatory view showing another example of the manufacturing apparatus according to the present invention. In this example, friction wheels 19 for interlocking are mounted on a pair of slit roll shafts so as to abut on each other. The wheel 19 is provided with a connecting friction wheel 21 that rolls on the outer peripheral surface of the friction wheel 19 via an arm 20. A fluid pressure cylinder 22 is connected to the arm 20 so that the connecting friction wheel 21 can contact and be separated from the outer peripheral surface of the rolling roll 4. According to such a configuration,
The cylinder 22 is extended, the arm 20 is turned to the rolling roll 4 side, and the connecting friction wheel 21 is brought into contact with the rolling roll 4 and pressed, whereby the slit roll is transmitted from the rolling roll 4 through the friction wheels 19 and 19. The rotational power can be transmitted to the motor.

[0015]

As described above, according to the method for manufacturing a filament material of the present invention, the slit roll has a peripheral speed equal to or higher than the peripheral speed of the rolling roll, that is, the traveling speed of the composite filament material as the rolled material. Since it rotates at a high speed, the buckling of the composite wire rod that occurs when the composite wire rod rolled by the rolling rolls enters the slit roll is reliably prevented, and the tearing at the joints of the composite wire rod is performed. Can be stabilized, and the productivity can be improved.

Further, according to the manufacturing apparatus of the present invention, the rotation and power of the slit roll can be interlocked and transmitted from the rolling roll by the interlocking rotating means, so that there is no need to provide a drive source for the slit roll, which reduces the cost of the apparatus. Reduction,
Compactness can be achieved.

[Brief description of the drawings]

FIG. 1 is a plan view of an apparatus for manufacturing a linear material according to an embodiment.

FIG. 2 is a sectional front view of a main part of the slit device.

FIG. 3 is an explanatory view of another apparatus for producing a filament material.

[Explanation of symbols]

 4 Rolling roll 7 Slit roll 12 Interlocking rotating means

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-57-106459 (JP, A) JP-A-59-141306 (JP, A) JP-A-61-279416 (JP, A) 25881 (JP, B2) JP 2-21882 (JP, B2) French patent 750785 (FR, B) (58) Fields investigated (Int. Cl. ⁷ , DB name) B21B 1/16 B21B 15/00

Claims (3)

(57) [Claims] 1. A composite wire having a plurality of linear portions joined in a longitudinal direction by a pair of rolling rolls via an articulated portion, and the composite linear material is rolled by a pair of opposed slit rolls. In a method of manufacturing a linear material in which a plurality of linear materials are obtained by cutting an articulated portion of the material, at least one of the slit rolls is formed by using the composite linear material.
A method for producing a linear material, wherein the material is driven to rotate at the same peripheral speed as the peripheral speed of a rolling roll when the material enters . 2. A composite wire material in which a plurality of linear portions are longitudinally coupled by a pair of rolling rolls via an articulation portion, and the composite linear material is rolled by a pair of opposed slit rolls. In a method of manufacturing a linear material in which a plurality of linear materials are obtained by cutting an articulated portion of the material, at least one of the slit rolls is formed by using the composite linear material.
A method for producing a linear material, wherein the material is driven to rotate at a peripheral speed higher than the peripheral speed of a rolling roll when the material enters . 3. A pair of rolling rolls for rolling a composite wire having a plurality of filaments connected in a length direction through a joint, and a joint of the composite wire. In a wire rod manufacturing apparatus having a pair of slit rolls for obtaining a plurality of wire rods by cutting through, the peripheral speed of at least one of the slit rolls is equal to or higher than the peripheral speed of a rolling roll. An apparatus for manufacturing a wire material, comprising interlocking rotating means for rotating the rolling member and transmitting rotating power from a rolling roll.