Fiber material spiral stranding device and stranding method thereof

Abstract

The invention provides a fiber material spiral twisting device which comprises a wire releasing frame, and a plurality of wire releasing bearings are arranged on the wire releasing frame. The blowing device comprises a doubling die, an air guide hole is formed in the middle of the doubling die in the length direction and connected with the straightening copper pipe, blowing inner cylinders are symmetrically arranged on the doubling die on the two sides of the air guide hole, a plurality of blowing holes are formed in the sides, close to the air guide hole, of the blowing inner cylinders, the blowing inner cylinders are communicated with the air guide hole through the blowing holes, and an air inlet pipe is arranged on the periphery of the doubling die. The yarn take-up device comprises a gearbox, one end of the gearbox is connected with a rotating wheel support, the rotating wheel support is connected with a yarn take-up support, and a turnover disc is arranged on the yarn take-up support. A plurality of aramid yarns are arranged on a pay-off bearing of the pay-off rack, and the plurality of aramid yarns pass through the doubling die, the straightening copper pipe and the yarn take-up device to form stranded aramid fibers. According to the fiber material spiral twisting device and the twisting method thereof, the twisting of the cable core is reduced, the mechanical performance of the cable is improved, and the service life of the high-strength cable is prolonged.

Description

Technical Field

[0001] The invention relates to the technical field of cables, and in particular to a fiber material spiral twisting device and a twisting method thereof. Background Art

[0002] The submarine cables needed for the development of marine resources need to withstand the ultra-high breaking force brought by the movement of ocean currents. The cables need to be designed to meet the breaking force requirements of the use environment according to different marine laying environments and depths. In order to maintain the flexibility of the cable, the general reinforcement material is selected from aramid yarn materials with high strength. Aramid yarn has a high tensile strength (more than 22 g / denier), which is about 5 to 6 times that of steel wire; high modulus aramid yarn (450 to 1000 g / denier), the tensile strength is about 2 to 3 times that of steel wire and glass fiber; low specific gravity, about 1 / 5 of steel wire; the material also has excellent high temperature resistance, chemical corrosion resistance and self-extinguishing properties.

[0003] Although aramid yarn has excellent breaking force, the material is soft and fluffy. It is still difficult to arrange the aramid yarn in a spiral on the cable core like a metal wire. It is easy for the aramid yarn and the cable core to not fit together or become empty, and the designed breaking force cannot be achieved.

[0004] In the prior art, different force values ​​are required according to the water depth and occasions where the cable is used, and it is often necessary to combine multiple aramid yarns to achieve this. Domestic aramid yarn specifications are incomplete, and manufacturers are often required to combine the yarns themselves. The fiber yarns are soft and fluffy. When using existing equipment, the traditional metal wire adjustment method is used when combining the yarns, and the tension cannot be adjusted to be consistent. The inconsistent tension leads to a significant reduction in the force value.

[0005] When the stranded aramid yarn is armored, the aramid yarn is attached to the cable core under the tension adjustment state of the cradle frame. Once it is affected by the turnover disk, the aramid yarn loses its tension and cannot fit tightly to the cable core, resulting in loose sheathing process, cable core sliding, serious reduction of mechanical properties, twisting and breaking during use. Summary of the invention

[0006] The purpose of the present invention is to overcome the deficiencies in the prior art and to provide a fiber material spiral twisting device and a twisting method thereof, which reduces cable core torsion, improves the cable mechanical properties of the cable, and increases the service life of high-force cables.

[0007] The technical solution adopted by the present invention is: A fiber material spiral twisting device, comprising: A wire-paying frame, on which a plurality of wire-paying bearings are arranged; The blowing device comprises a parallel line mold, an air guide hole is arranged in the middle of the parallel line mold along the length direction, the air guide hole is connected to the straightening copper tube, and an air blowing inner cylinder is symmetrically arranged on the parallel line mold on both sides of the air guide hole, a plurality of air blowing holes are arranged on the side of the air blowing inner cylinder close to the air guide hole, the air blowing inner cylinder is connected with the air guide hole through the air blowing hole, and an air inlet pipe is arranged on the periphery of the parallel line mold; A yarn taking-up device comprises a gear box, one end of which is connected to a rotating wheel bracket, the gear box and the rotating wheel bracket are connected with gears, the rotating wheel bracket rotates with the gear box, the rotating wheel bracket is connected to a wire taking-up bracket, and a turnover disk is arranged on the wire taking-up bracket; a plurality of aramid yarns are mounted on a wire paying-off bearing of a wire paying-off frame, and the plurality of aramid yarns are formed into strands of aramid yarn through a paralleling die, a straightening copper tube and a yarn taking-up device.

[0008] Preferably, in the fiber material spiral twisting device, the diameter of the air guide holes is 9-11 mm.

[0009] Preferably, in the fiber material spiral twisting device, 5-6 blowing holes are equidistantly arranged on one side of the blowing inner cylinder close to the air guide hole, the aperture of the blowing hole is 1-3 mm, the angle of the air guide hole is 45°, and the spacing is 8-10 mm.

[0010] Preferably, in the fiber material spiral twisting device, a hollow cavity is formed in the middle of the blowing inner cylinder.

[0011] The present invention also provides a method for spirally twisting fiber materials, which comprises the following steps: Step S1. multiple aramid yarns are mounted on the pay-off bearing of the pay-off frame, and the pay-off bearing and the blowing device are mounted on the wire bundling device, one end of the multiple aramid yarns are passed through the doubling die, and compressed air is blown into the air guide hole through the air inlet pipe to make the multiple aramid yarns collide and entangle together, and after a vortex is formed in the air guide hole, it is sprayed out from the opening of the straightening copper tube, and twisted through the take-up frame through the turnover disk to form a strand of aramid yarn; Step S2. Adjust the tension of the stranded aramid fibers on the cradle of the cabling machine, compact and straighten the stranded aramid fibers, evacuate the cabling machine, and then put the stranded aramid fibers into a wrapping device to be wrapped with a tape to obtain a cable core.

[0012] Preferably, in the fiber material spiral twisting method, the twist degree of the take-up support through the turntable in step S1 is 3-5.

[0013] Preferably, in the fiber material spiral twisting method, the air flow rate of the compressed air blown into the air inlet pipe in step S1 is 0.8-1.2 MPa.

[0014] Preferably, in the fiber material spiral twisting method, the degree of vacuum of the cabling machine in step S2 is 0.8-1.2 Mpa.

[0015] Advantages of the present invention: (1) The fiber material spiral twisting device and twisting method of the present invention utilize the soft and fluffy characteristics of aramid yarn during twisting, adopt the fiber material spiral twisting device, and use a hair flow brush and air flow to combine multiple loose aramid yarns into one strand; the air inlet pipe of the blowing device is connected to compressed air, and the air enters the reserved blowing hole through the internal channel and is sprayed on the fiber yarn. The air flow blows the single 1000D fiber yarn apart, and under the vortex formed in the twisting die 21 and the tension of the straightening copper tube, multiple single fiber yarns are twisted together to form a whole strand; in the cable core armor, the vacuum is evacuated to a vacuum degree of 0.8-1.2Mpa to increase the pressure between the aramid yarn armor and the cable core. In the vacuum state, the aramid shrinks radially toward the cable core, and the aramid armor is tightened with a wrapping tape to prevent lanterns.

[0016] (2) The fiber material spiral twisting device and twisting method of the present invention reduce the cable core torsion, improve the cable mechanical properties of the cable, and increase the service life of the high-force cable. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic structural diagram of the fiber material spiral twisting device of the present invention.

[0018] Figure 2 It is a schematic structural diagram of the blowing device of the present invention.

[0019] Figure 3 This is a schematic diagram of the structure in which an air inlet pipe and an air blowing inner cylinder are arranged on the air blowing device.

[0020] Figure 4 It is a structural schematic diagram of a fiber material spiral twisting device provided with a yarn collecting device according to the present invention. DETAILED DESCRIPTION

[0021] The present invention will be further described below in conjunction with specific embodiments.

[0022] Example 1 like Figure 1-Figure 4 , a fiber material spiral twisting device, comprising: A wire-releasing frame 1, on which a plurality of wire-releasing bearings 11 are arranged; The blowing device 2 comprises a parallel mold 21, an air guide hole 22 is arranged in the middle of the parallel mold 21 along the length direction, the air guide hole 22 is connected to the straightening copper tube 23, and a blowing inner cylinder 24 is symmetrically arranged on the parallel mold 21 on both sides of the air guide hole 22, and a plurality of blowing holes 25 are arranged on the side of the blowing inner cylinder 24 close to the air guide hole 22, and the blowing inner cylinder 24 is connected with the air guide hole 22 through the blowing holes 25, and an air inlet pipe 26 is arranged on the periphery of the parallel mold 21; The yarn collecting device 3 comprises a gear box 31, one end of the gear box 31 is connected to a rotating wheel bracket 32, the gear box 31 and the rotating wheel bracket 32 ​​are connected with gears, the output gear of the gear box 31 is meshed with the gear arranged at one end of the rotating wheel bracket 32, the rotating wheel bracket 32 ​​rotates with the gear of the gear box 31, the rotating wheel bracket 32 ​​is connected to a wire taking-up bracket 33, a turnover disk 34 is arranged on the wire taking-up bracket 33, the wire taking-up bracket 33 comprises two cross beams, each cross beam is provided with a telescopic pin, each telescopic pin is provided with a gear on its side, the distance between the two telescopic pins corresponds to the diameter of the wire taking-up disk, and the rotation of the gear drives the wire taking-up disk to take up the wire; a plurality of aramid yarns are mounted on the wire paying-off bearing 1 of the wire paying-off frame, and the plurality of aramid yarns are formed into strands of aramid yarn through a paralleling die 21, a straightening copper tube 23 and the yarn collecting device 3.

[0023] The diameter of the air guide hole 22 is 9-11 mm; 5-6 air holes 25 are equidistantly arranged on one side of the blowing inner cylinder 24 close to the air guide hole 22, the aperture of the blowing holes 25 is 1-3 mm, the angle of the air guide hole 22 is 45°, and the spacing is 8-10 mm; a hollow cavity 27 is formed in the middle of the blowing inner cylinder 24.

[0024] Example 2 A method for spirally twisting fiber materials, comprising the following steps: like Figure 1-Figure 4 , step S1. install multiple aramid yarns on the pay-off bearing 11 of the pay-off frame, and install the pay-off bearing 11 and the blowing device 2 on the wire bundling device, pass one end of the multiple aramid yarns through the paralleling die 21, blow compressed air with an air flow rate of 0.8-1.2Mpa into the air guide hole 22 through the air inlet pipe 26 to make the multiple aramid yarns collide and entangle together, and can form eddy currents in the air guide hole 22 and then spray out from the opening of the straightening copper tube 23, and twist through the turnover disk 34 set on the take-up bracket 33 to form a strand of aramid yarn, and the twist degree of the take-up bracket 33 twisted by the turnover disk 34 is 3-5; Step S2. Adjust the tension of the stranded aramid fibers on the cradle of the cabling machine, compact and straighten the stranded aramid fibers, and evacuate the cabling machine to a vacuum degree of 0.8-1.2 Mpa. Then, the stranded aramid fibers enter the wrapping device and are wrapped with a tape to obtain a cable core.

[0025] Working principle or working process: when doubling, the soft and fluffy characteristics of aramid yarn are utilized, a spiral twisting device for fiber materials is adopted, and a hair flow brush and air flow are used to combine multiple loose aramid yarns into one strand; the air inlet pipe 26 of the blowing device is connected to compressed air, and the air enters the reserved blowing hole through the internal channel and is sprayed on the fiber yarn. The air flow blows away the single-strand 1000D fiber yarn, and under the vortex formed in the doubling mold 21 and the tension of the straightening copper tube, multiple single-strand fiber yarns are entangled together to form a whole strand; in the cable core armor, the vacuum is evacuated to a vacuum degree of 0.8-1.2Mpa to increase the pressure between the aramid yarn armor and the cable core. Under the vacuum state, the aramid shrinks radially toward the cable core, and the aramid armor is tightened with a wrapping tape, so that the cable core will not appear lantern-shaped.

[0026] Finally, it should be noted that the above specific implementation methods are only used to illustrate the technical solution of the present invention rather than to limit it. Although the present invention has been described in detail with reference to examples, those skilled in the art should understand that the technical solution of the present invention can be modified or replaced by equivalents without departing from the spirit and scope of the technical solution of the present invention, which should be included in the scope of the claims of the present invention.

Claims

1. A fiber material spiral twisting device, characterized in that: include: A wire-releasing frame (1), wherein a plurality of wire-releasing bearings (11) are arranged on the wire-releasing frame (1); An air blowing device (2), the air blowing device (2) comprising a parallel line mold (21), an air guide hole (22) being arranged in the middle of the parallel line mold (21) along the length direction, the air guide hole (22) being connected to a straightening copper tube (23), an air blowing inner cylinder (24) being symmetrically arranged on the parallel line mold (21) on both sides of the air guide hole (22), a plurality of air blowing holes (25) being arranged on a side of the air blowing inner cylinder (24) close to the air guide hole (22), the air blowing inner cylinder (24) being connected to the air guide hole (22) through the air blowing hole (25), and an air inlet pipe (26) being arranged on the periphery of the parallel line mold (21); A yarn collecting device (3), the yarn collecting device (3) comprising a gear box (31), one end of the gear box (31) being connected to a rotating wheel bracket (32), the gear box (31) and the rotating wheel bracket (32) being connected by gears, the rotating wheel bracket (32) rotating along with the gear box (31), the rotating wheel bracket (32) being connected to a wire collecting bracket (33), and a revolving plate (34) being arranged on the wire collecting bracket (33); a plurality of aramid yarns are mounted on a wire paying-off bearing (1) of a wire paying-off frame, and the plurality of aramid yarns are formed into strands of aramid yarns through a paralleling die (21), a straightening copper tube (23) and the yarn collecting device (3).

2. The fiber material spiral twisting device according to claim 1, characterized in that: The diameter of the air guide hole (22) is 9-11 mm.

3. The fiber material spiral twisting device according to claim 1, characterized in that: Five to six blowing holes (25) are equidistantly arranged on one side of the blowing inner cylinder (24) close to the air guide hole (22); the diameter of the blowing holes (25) is 1 to 3 mm; the angle of the air guide hole (22) is 45°, and the spacing is 8 to 10 mm.

4. The fiber material spiral twisting device according to claim 1, characterized in that: A hollow cavity (27) is formed in the middle of the blowing inner cylinder (24).

5. A method for using the fiber material spiral twisting device according to any one of claims 1 to 4, characterized in that: The following steps are involved: Step S1. a plurality of aramid yarns are mounted on a pay-off bearing (11) of a pay-off frame, and the pay-off bearing (11) and the blowing device (2) are mounted on a wire bundling device, one end of each of the plurality of aramid yarns is passed through a doubling die (21), compressed air is blown into the air guide hole (22) through an air inlet pipe (26) to cause the plurality of aramid yarns to collide and entangle together, and a vortex is formed in the air guide hole (22) and then ejected from the opening of the straightening copper tube (23), and twisted through a turntable (34) provided on a take-up bracket (33) to form a strand of aramid yarn; Step S2. Adjust the tension of the stranded aramid fibers on the cradle of the cabling machine, compact and straighten the stranded aramid fibers, evacuate the cabling machine, and then put the stranded aramid fibers into a wrapping device to be wrapped with a tape to obtain a cable core.

6. The method for spirally twisting fiber materials according to claim 5, characterized in that: In step S1, the twist degree of the take-up support (33) through the turntable (34) is 3-5.

7. The method for spirally twisting fiber materials according to claim 5, characterized in that: In step S1, the air flow rate of the compressed air blown into the air inlet pipe (26) is 0.8-1.2 MPa.

8. The method for spirally twisting fiber materials according to claim 5, characterized in that: The degree of vacuum of the cabling machine in step S2 is 0.8-1.2 MPa.

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